676 lines
26 KiB
Python
676 lines
26 KiB
Python
import re
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from datetime import datetime
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from django.utils.dateparse import parse_datetime
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from allauthdemo.polls.models import Event, Poll, PollOption, EmailUser
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from allauthdemo.auth.models import DemoUser
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'''
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Goal: Convert the new form data (from the updated DEMOS2 UI) returned to '/event/create' into
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an Event object that can be persisted via a Model to the DB
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Author: Vincent de Almeida
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Created: 11/06/2018
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'''
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# TODO: Define a validation function that can do back-end verification on top of the front end validation
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# TODO: Validation can make use of __contains__ from QueryDict:
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# TODO: https://docs.djangoproject.com/en/2.0/ref/request-response/#django.http.QueryDict
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class EventModelAdaptor:
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# Raw data from form and django
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form_data = None
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user = None
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# Used for validating the form data
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form_data_validation = None
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invalid_form_fields = {}
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validation_starts_at = None
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validation_ends_at = None
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# Extracted form data
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event_name = None
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identifier = None
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starts_at = None
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ends_at = None
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organisers = []
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trustees = []
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voters = []
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# Each element of the map has a sub array with 2 elements - poll and associated options
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polls_options_map = []
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# Event Model Object containing all the extracted data
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event = None
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def __init__(self, form_data, user):
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self.form_data = form_data.copy()
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self.form_data_validation = form_data.copy()
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self.user = user
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def isFormDataValid(self, events, demo_users):
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nameValid = self.__isNameValid(events)
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identifierValid = self.__isIdentifierValid(events)
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eventTimingsValid = self.__isEventTimingsValid()
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pollsValid = self.__arePollsValid()
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organisersEmailsValid = self.__areOrganisersEmailsValid(demo_users)
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trusteesEmailsValid = self.__areTrusteeEmailsValid()
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votersListValid = self.__isVotersListValid()
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return nameValid \
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and identifierValid \
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and eventTimingsValid \
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and pollsValid \
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and organisersEmailsValid \
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and trusteesEmailsValid \
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and votersListValid
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def __isNameValid(self, events):
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valid = True
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event_name = self.form_data_validation.pop('name-input')[0]
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if event_name == '':
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self.invalid_form_fields['event_name'] = {'error': 'The event name field is blank.'}
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valid = False
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else:
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for event in events:
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if event.title == event_name:
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self.invalid_form_fields['event_name'] = {'error': "The event name '" + event_name + "' is already in use."}
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valid = False
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break
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self.invalid_form_fields['event_name_data'] = {'val': event_name}
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return valid
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def __isIdentifierValid(self, events):
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valid = True
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identifier = self.form_data_validation.pop('identifier-input')[0]
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if identifier == '':
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self.invalid_form_fields['identifier'] = {'error': 'The event slug field is blank.'}
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valid = False
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else:
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for event in events:
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if event.EID == identifier:
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self.invalid_form_fields['identifier'] = {'error': "The event slug '" + identifier + "' is already in use."}
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valid = False
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break
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self.invalid_form_fields['identifier_data'] = {'val': identifier}
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return valid
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def __isVoteStartValid(self):
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valid = True
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# Extract start and end times as string and convert to datetime to perform validation
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# The UTC offset comes with a colon i.e. '+01:00' which needs to be removed
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validation_error = "The voting start date and time format is invalid."
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starts_at_input = self.form_data_validation.pop('vote-start-input')[0]
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if starts_at_input == '':
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self.invalid_form_fields['starts_at'] = {'error': 'The voting start time is blank.'}
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return False
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starts_at = starts_at_input
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starts_at_offset_index = starts_at.find('+')
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if starts_at_offset_index != -1:
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# timezone data has been supplied so use parse_datetime from django
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starts_at_time = starts_at[0: starts_at_offset_index - 1].replace(' ', 'T')
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starts_at_offset = starts_at[starts_at_offset_index:].replace(':', '')
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starts_at = starts_at_time + starts_at_offset
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try:
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starts_at = parse_datetime(starts_at)
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if starts_at is None:
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self.invalid_form_fields['starts_at'] = {'error': validation_error}
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valid = False
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except ValueError:
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self.invalid_form_fields['starts_at'] = {'error': validation_error}
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valid = False
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else:
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# No Timezone data has been supplied so use strptime instead
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try:
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starts_at = datetime.strptime(starts_at, '%Y-%m-%d %H:%M')
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if starts_at is None:
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self.invalid_form_fields['starts_at'] = {'error': validation_error}
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valid = False
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except ValueError:
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self.invalid_form_fields['starts_at'] = {'error': validation_error}
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valid = False
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self.validation_starts_at = starts_at
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self.invalid_form_fields['starts_at_data'] = {'val': starts_at_input}
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return valid
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def __isVoteEndValid(self):
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valid = True
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validation_error = "The voting end date and time format is invalid."
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ends_at_input = self.form_data_validation.pop('vote-end-input')[0]
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if ends_at_input == '':
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self.invalid_form_fields['ends_at'] = {'error': 'The voting end time is blank.'}
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return False
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ends_at = ends_at_input
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ends_at_offset_index = ends_at.find('+')
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if ends_at_offset_index != -1:
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# timezone data has been supplied so use parse_datetime from django
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ends_at_time = ends_at[0:ends_at_offset_index - 1].replace(' ', 'T')
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ends_at_offset = ends_at[ends_at_offset_index:].replace(':', '')
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ends_at = ends_at_time + ends_at_offset
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try:
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ends_at = parse_datetime(ends_at)
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if ends_at is None:
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self.invalid_form_fields['ends_at'] = {'error': validation_error}
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valid = False
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except ValueError:
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self.invalid_form_fields['ends_at'] = {'error': validation_error}
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valid = False
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else:
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# No Timezone data has been supplied so use strptime instead
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try:
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ends_at = datetime.strptime(ends_at, '%Y-%m-%d %H:%M')
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if ends_at is None:
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self.invalid_form_fields['ends_at'] = {'error': validation_error}
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valid = False
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except ValueError:
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self.invalid_form_fields['ends_at'] = {'error': validation_error}
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valid = False
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# Store the ends_at for further validation as well as the original data val
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self.validation_ends_at = ends_at
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self.invalid_form_fields['ends_at_data'] = {'val': ends_at_input}
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return valid
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def __isEventTimingsValid(self):
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# Ensure that the start and end times are independently valid and then ensure they don't overlap
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# in an invalid manner
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voteStartValid = self.__isVoteStartValid()
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voteEndValid = self.__isVoteEndValid()
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eventTimingsValid = True
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# Ensure that the start date is before the end date and that the end is after the start
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if voteStartValid and voteEndValid:
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if not self.validation_starts_at < self.validation_ends_at and self.validation_ends_at > self.validation_starts_at:
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self.invalid_form_fields['event_timings'] = {'error': 'The start date must be before the end date and the end after the start date.'}
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eventTimingsValid = False
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return voteStartValid and voteEndValid and eventTimingsValid
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def __arePollsValid(self):
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valid = True
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# Get the poll count
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poll_count = int(self.form_data_validation.pop('poll-count-input')[0])
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polls_json = []
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errors_summary = "The following poll # have errors: "
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for i in range(poll_count):
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# Whether there are errors for this specific poll
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poll_valid = True
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# JSON representation of the poll
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poll_json = {}
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# JSON struct for defining errors in the poll
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poll_errors_json = {}
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# String version of i
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i_str = str(i)
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poll_json['no'] = {'val': i_str}
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# Inspect all of the options for this poll
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options = self.form_data_validation.pop('option-name-input-' + i_str)
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options_list = []
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blank_count = 0
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for option in options:
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if option == '':
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blank_count += 1
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else:
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options_list.append(option)
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# Add back the blank options to the option list not including the hidden one
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for i in range(blank_count-1):
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options_list.append("")
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# blank count is expected to be 1 due to the hidden option row that's cloned in the
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# front end every time a new option is added
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if blank_count > 1:
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poll_errors_json['options'] = {'val': "There are " + str(blank_count-1) + " blank poll options"}
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valid = False
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poll_valid = False
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poll_json['options'] = {'val': options_list}
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# Ensure that the poll question / statement isn't blank
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name = self.form_data_validation.pop('question-name-input-' + i_str)[0]
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if name == '':
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poll_errors_json['name'] = {'val': "The poll name is blank."}
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valid = False
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poll_valid = False
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# Record the poll name in the JSON representation of the poll
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poll_json['name'] = {'val': name}
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# Validate the min max poll option selections
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min_num_selections_str = self.form_data_validation.pop('minimum-input-' + i_str)[0]
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max_num_selections_str = self.form_data_validation.pop('maximum-input-' + i_str)[0]
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errors = ""
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if min_num_selections_str == '':
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errors = "The minimum selection cannot be blank. "
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valid = False
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poll_valid = False
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else:
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min_num_selections = None
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try:
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min_num_selections = int(min_num_selections_str)
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if min_num_selections < 0:
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errors = "The minimum selection cannot be less than zero. "
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valid = False
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poll_valid = False
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if min_num_selections > len(options) - blank_count:
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if len(errors) > 0:
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errors = errors + "and it cannot be more than the number of options. "
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else:
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errors = "The minimum selection cannot be greater than the number of options. "
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valid = False
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poll_valid = False
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if max_num_selections_str == '':
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max_sel_blank_err = "The maximum selection cannot be blank. "
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if len(errors) > 0:
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errors = errors + max_sel_blank_err
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else:
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errors = max_sel_blank_err
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valid = False
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poll_valid = False
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else:
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max_num_selections = None
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try:
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max_num_selections = int(max_num_selections_str)
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if min_num_selections > max_num_selections:
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min_gt_max_err = "The minimum selection cannot be greater than the maximum. "
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if len(errors) > 0:
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errors = errors + min_gt_max_err
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else:
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errors = min_gt_max_err
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valid = False
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poll_valid = False
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if max_num_selections < 0:
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max_less_zero_err = "The maximum cannot be less than 0. "
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if len(errors) > 0:
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errors = errors + max_less_zero_err
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else:
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errors = max_less_zero_err
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valid = False
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poll_valid = False
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if max_num_selections > len(options) - blank_count:
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max_options_err = "The max number of option selections cannot be more than the number of options."
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if len(errors) > 0:
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errors = errors + max_options_err
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else:
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errors = max_options_err
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valid = False
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poll_valid = False
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# Record the min max poll option selection values in the JSON rep of the poll
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poll_json['min_selection'] = {'val': min_num_selections}
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poll_json['max_selection'] = {'val': max_num_selections}
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except ValueError:
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max_opts_input_err = "The maximum option selection input is not valid. "
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if len(errors) > 0:
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errors = errors + max_opts_input_err
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else:
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errors = max_opts_input_err
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valid = False
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poll_valid = False
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except ValueError:
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errors = "The minimum option selection input is not valid."
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valid = False
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poll_valid = False
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poll_errors_json['min_max'] = {'val': errors}
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# Store the errors as part of the JSON rep of the poll
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poll_json['errors'] = {'val': poll_errors_json}
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# Add the poll rep to the list of polls
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polls_json.append(poll_json)
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# If the validation for the poll has failed, add it to the error summary
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if not poll_valid:
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errors_summary = errors_summary + str(i + 1) + " "
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self.invalid_form_fields['polls_data'] = {'val': polls_json}
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self.invalid_form_fields['poll_count'] = {'val': poll_count}
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if not valid and len(errors_summary) > 34:
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errors_summary = errors_summary + "and can be corrected by editing them."
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self.invalid_form_fields['polls_errors'] = {'error': errors_summary}
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return valid
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def __areOrganisersEmailsValid(self, demo_users):
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valid = True
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# Create a list of emails from the demo users
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emails = []
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for user in demo_users:
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emails.append(user.email)
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# Check that the list of organiser emails are actually valid
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organisers_list_input = self.form_data_validation.pop('organiser-email-input')
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organisers_list = []
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blank_count = 0
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error = "The following email(s) supplied are not organisers: "
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for organiser in organisers_list_input:
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if organiser != '':
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organisers_list.append(organiser)
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if organiser not in emails:
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error = error + organiser + " "
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valid = False
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else:
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blank_count += 1
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if blank_count > 1:
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if not valid:
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error = error + " and there are " + str(blank_count - 1) + " blank organiser inputs."
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else:
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error = "There are " + str(blank_count - 1) + " blank organiser inputs."
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valid = False
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# This adds in blank organisers so that the template can render them for the user to fix
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for i in range(blank_count - 1):
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organisers_list.append("")
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if not valid:
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self.invalid_form_fields['organiser_emails'] = {'error': error}
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self.invalid_form_fields['organiser_emails_data'] = {'val': organisers_list}
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return valid
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def __areTrusteeEmailsValid(self):
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valid = True
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# Check that the list of trustees is valid
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trustees_list_input = self.form_data_validation.pop('trustee-email-input')
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trustees_list = []
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error = "The following email(s) supplied are not valid: "
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blank_count = 0
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for trustee in trustees_list_input:
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if trustee != '':
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trustees_list.append(trustee)
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match = re.match(r'[^\s@]+@[^\s@]+\.[^\s@]+', trustee)
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if match is None:
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error = error + trustee + " "
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valid = False
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else:
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blank_count += 1
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if blank_count > 1:
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if not valid:
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error = error + " and there are " + str(blank_count - 1) + " blank trustee inputs."
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else:
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error = "There are " + str(blank_count - 1) + " blank trustee inputs."
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valid = False
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# This adds in blank trustees so that the template can render them for the user to fix
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for i in range(blank_count - 1):
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trustees_list.append("")
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if not valid:
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self.invalid_form_fields['trustee_emails'] = {'error': error}
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self.invalid_form_fields['trustee_emails_data'] = {'val': trustees_list}
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return valid
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def __isVotersListValid(self):
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valid = True
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# Check that the list of voters is valid
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voters_csv_string = self.form_data_validation.pop('voters-list-input')[0].replace(' ', '')
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if voters_csv_string == '':
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self.invalid_form_fields['voters_emails'] = {'error': 'The voters list is blank.'}
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self.invalid_form_fields['voters_emails_data'] = {'val': voters_csv_string}
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return False
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voters_email_list = voters_csv_string.split(',')
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error = "The following email(s) supplied are not valid: "
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for voter_email in voters_email_list:
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if voter_email != '' and re.match(r'[^\s@]+@[^\s@]+\.[^\s@]+', voter_email) is None:
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error = error + voter_email + " "
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valid = False
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if not valid:
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self.invalid_form_fields['voters_emails'] = {'error': error}
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self.invalid_form_fields['voters_emails_data'] = {'val': voters_csv_string}
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return valid
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def getInvalidFormFields(self):
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return self.invalid_form_fields
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def extractData(self):
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# Extract name and identifier first
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self.event_name = self.form_data.pop('name-input')[0]
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self.identifier = self.form_data.pop('identifier-input')[0]
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# Extract start and end times as string and convert to datetime
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# The UTC offset comes with a colon i.e. '+01:00' which needs to be removed
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starts_at = self.form_data.pop('vote-start-input')[0]
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starts_at_offset_index = starts_at.find('+')
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if starts_at_offset_index != -1:
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# timezone data has been supplied so use parse_datetime from django
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starts_at_time = starts_at[0: starts_at_offset_index-1].replace(' ', 'T')
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starts_at_offset = starts_at[starts_at_offset_index:].replace(':', '')
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starts_at = starts_at_time + starts_at_offset
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self.starts_at = parse_datetime(starts_at)
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else:
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# No Timezone data has been supplied so use strptime instead
|
|
self.starts_at = datetime.strptime(starts_at, '%Y-%m-%d %H:%M')
|
|
|
|
|
|
ends_at = self.form_data.pop('vote-end-input')[0]
|
|
ends_at_offset_index = ends_at.find('+')
|
|
|
|
if ends_at_offset_index != -1:
|
|
# timezone data has been supplied so use parse_datetime from django
|
|
ends_at_time = ends_at[0:ends_at_offset_index-1].replace(' ', 'T')
|
|
ends_at_offset = ends_at[ends_at_offset_index:].replace(':', '')
|
|
ends_at = ends_at_time + ends_at_offset
|
|
self.ends_at = parse_datetime(ends_at)
|
|
else:
|
|
# No Timezone data has been supplied so use strptime instead
|
|
self.ends_at = datetime.strptime(ends_at, '%Y-%m-%d %H:%M')
|
|
|
|
# Extract the list of organisers
|
|
organisers_list = self.form_data.pop('organiser-email-input')
|
|
|
|
for organiser in organisers_list:
|
|
if organiser != '' and DemoUser.objects.filter(email=organiser).exists():
|
|
self.organisers.append(DemoUser.objects.filter(email=organiser).get())
|
|
|
|
# Extract the list of trustees
|
|
trustees_list = self.form_data.pop('trustee-email-input')
|
|
|
|
for trustee in trustees_list:
|
|
if trustee != '':
|
|
if EmailUser.objects.filter(email=trustee).exists():
|
|
self.trustees.append(EmailUser.objects.filter(email=trustee).get())
|
|
else:
|
|
self.trustees.append(EmailUser(email=trustee))
|
|
|
|
# Extract the email list of voters
|
|
voters_csv_string = self.form_data.pop('voters-list-input')[0].replace(' ', '')
|
|
voters_email_list = voters_csv_string.split(',')
|
|
|
|
for voter_email in voters_email_list:
|
|
if voter_email != '':
|
|
if EmailUser.objects.filter(email=voter_email).exists():
|
|
self.voters.append(EmailUser.objects.filter(email=voter_email).get())
|
|
else:
|
|
self.voters.append(EmailUser(email=voter_email))
|
|
|
|
# Create the Event model object - this does not persist it to the DB
|
|
self.event = Event(start_time=self.starts_at,
|
|
end_time=self.ends_at,
|
|
title=self.event_name,
|
|
EID=self.identifier,
|
|
creator=self.user.first_name + ' ' + self.user.last_name,
|
|
c_email=self.user.email,
|
|
trustees=voters_csv_string)
|
|
|
|
|
|
def __gen_polls_options_map(self):
|
|
# Get the poll count (the number of poll and options that have been defined)
|
|
poll_count = int(self.form_data.pop('poll-count-input')[0])
|
|
|
|
for i in range(poll_count):
|
|
# String version of i
|
|
i_str = str(i)
|
|
|
|
# Generate PollOption objects from the option data defined in form_data
|
|
options = self.form_data.pop('option-name-input-' + i_str)
|
|
poll_options_list = []
|
|
votes = 0
|
|
|
|
for option in options:
|
|
if option != '':
|
|
poll_options_list.append(PollOption(choice_text=option, votes=votes))
|
|
|
|
# Extract required Poll object data and create a poll with its PollOption objects
|
|
text = self.form_data.pop('question-name-input-' + i_str)[0]
|
|
min_num_selections = int(self.form_data.pop('minimum-input-' + i_str)[0])
|
|
max_num_selections = int(self.form_data.pop('maximum-input-' + i_str)[0])
|
|
|
|
poll = Poll(question_text=text,
|
|
total_votes=votes,
|
|
min_num_selections=min_num_selections,
|
|
max_num_selections=max_num_selections,
|
|
event=self.event)
|
|
|
|
self.polls_options_map.append([poll, poll_options_list])
|
|
|
|
|
|
# Instantiate all the polls and their associated poll options
|
|
def __get_instantiated_polls(self):
|
|
polls = []
|
|
for poll_option_map in self.polls_options_map:
|
|
poll = poll_option_map[0]
|
|
poll_options = poll_option_map[1]
|
|
|
|
# Save the poll to the db
|
|
poll.save()
|
|
|
|
# Instantiate poll options
|
|
for option in poll_options:
|
|
option.question = poll
|
|
option.save()
|
|
|
|
poll.options = poll_options
|
|
poll.save()
|
|
|
|
polls.append(poll)
|
|
|
|
return polls
|
|
|
|
def updateModel(self):
|
|
# First thing to do is persist the event object to the db
|
|
# with basic data before adding things like poll data
|
|
self.event.save()
|
|
|
|
# List of organisers should already be instantiated and present in the db
|
|
# so it can just be added
|
|
self.event.users_organisers = self.organisers
|
|
|
|
# Add the list of trustees to the event, making sure they're instantiated
|
|
for trustee in self.trustees:
|
|
if not EmailUser.objects.filter(email=trustee.email).exists():
|
|
trustee.save()
|
|
|
|
self.event.users_trustees = self.trustees
|
|
|
|
# Add the list of voters to the event, making sure they're instantiated
|
|
# Additionally, generating the AccessKey for voters
|
|
for voter in self.voters:
|
|
if not EmailUser.objects.filter(email=voter.email).exists():
|
|
voter.save()
|
|
|
|
self.event.voters = self.voters
|
|
|
|
# Extract all the poll data for the event and associated poll option data
|
|
# This can only be done at this point as the event has been persisted
|
|
self.__gen_polls_options_map()
|
|
|
|
# Get the instantiated list of polls which have already instantiated options
|
|
self.event.polls = self.__get_instantiated_polls()
|
|
|
|
self.event.save()
|
|
|
|
# Finally return a reference to the event
|
|
return self.event
|
|
|
|
def clear_data(self):
|
|
self.form_data = None
|
|
self.form_data_validation = None
|
|
self.invalid_form_fields = {}
|
|
self.validation_starts_at = None
|
|
self.validation_ends_at = None
|
|
self.user = None
|
|
self.event_name = None
|
|
self.identifier = None
|
|
self.starts_at = None
|
|
self.ends_at = None
|
|
self.organisers[:] = []
|
|
self.trustees[:] = []
|
|
self.voters[:] = []
|
|
self.polls_options_map[:] = []
|
|
self.event = None
|
|
|