Added nicer explosions via try::tiny

lib/Pear/LocalLoop/Controller/Admin/ImportFrom.pm

@@ -1,7 +1,7 @@
 package Pear::LocalLoop::Controller::Admin::ImportFrom;
 use Mojo::Base 'Mojolicious::Controller';
 use Moo;
-use Devel::Dwarn;
+use Try::Tiny;
 
 use Pear::LocalLoop::Import::LCCCsv::Suppliers;
 use Pear::LocalLoop::Import::LCCCsv::Transactions;
@@ -47,19 +47,22 @@ sub post_transactions {
     $c->flash( error => "CSV file size is too large" );
     return $c->redirect_to( '/admin/import_from' );
   }
-  my $csv_import = Pear::LocalLoop::Import::LCCCsv::Transactions->new(
-    csv_string => $c->param('transactions_csv')->slurp,
-    schema => $c->app->schema
-  )->import_csv;
-
-  if ($csv_import->csv_error) {
-    $c->flash( error => $csv_import->csv_error );
+  my $csv_error;
+  try {
+    Pear::LocalLoop::Import::LCCCsv::Transactions->new(
+      csv_string => $c->param('transactions_csv')->slurp,
+      schema => $c->app->schema
+    )->import_csv;
+  } catch {
+    $csv_error = $_;
+  };
+  if ( $csv_error ) {
+    $c->flash( error => $csv_error );
     return $c->redirect_to( '/admin/import_from' );
   } else {
     $c->flash( success => "CSV imported" );
     return $c->redirect_to( '/admin/import_from' );
   }
-
 }
 
 1;

lib/Pear/LocalLoop/Import/LCCCsv/Suppliers.pm

@@ -1,6 +1,5 @@
 package Pear::LocalLoop::Import::LCCCsv::Suppliers;
 use Moo;
-use Devel::Dwarn;
 
 extends qw/Pear::LocalLoop::Import::LCCCsv/;
 
@@ -15,7 +14,6 @@ sub import_csv {
   my ($self) = @_;
 
   my $rows = $self->csv_data;
-  return $self unless $rows;
   foreach my $row ( @{$rows} ) {
     $self->_row_to_result($row);
   }

lib/Pear/LocalLoop/Import/LCCCsv/Transactions.pm

@@ -6,19 +6,19 @@ use DateTime::Format::Strptime;
 extends qw/Pear::LocalLoop::Import::LCCCsv/;
 
 has '+csv_required_columns' => (
-  builder => sub { return [ qw/
-  transaction_id
-  supplier_id
-  net_amount
-  gross_amount
-  / ]},
+  builder => sub { return [ (
+  'transaction_id',
+  'supplier_id',
+  'net_amount',
+  'vat amount',
+  'gross_amount',
+  )]},
 );
 
 sub import_csv {
   my ($self) = @_;
 
   my $rows = $self->csv_data;
-  return 0 unless $rows;
   my $lcc_org = $self->schema->resultset('Organisation')->find({ name => "Lancashire County Council" });
   foreach my $row ( @{$rows} ) {
     $self->_row_to_result($row, $lcc_org);
@@ -29,10 +29,6 @@ sub import_csv {
 sub _row_to_result {
   my ( $self, $row, $lcc_org ) = @_;
 
-    use Devel::Dwarn;
-
-    Dwarn $row;
-
     my $supplier_id = $row->{supplier_id};
 
     my $organisation = $self->schema->resultset('Organisation')->find({
@@ -49,7 +45,7 @@ sub _row_to_result {
 
     my $paid_date = ( $row->{paid_date} ? $date_formatter->parse_datetime($row->{paid_date}) : DateTime->today );
 
-    # TODO negative values
+    # TODO negative values are sometimes present
     $self->external_result->find_or_create_related('transactions', {
       external_id => $row->{transaction_id},
       transaction => {

lib/Pear/LocalLoop/Import/Role/CSV.pm

@@ -70,17 +70,8 @@ has csv_data => (
 sub check_headers {
   my $self = shift;
   my $req_headers = $self->csv_required_columns;
-  use Devel::Dwarn;
-  Dwarn $req_headers;
-  # TODO catch the boom
   my @headers;
-  try {
-    @headers = $self->_text_csv->header( $self->_csv_filehandle );
-  } catch {
-    $self->csv_error = $_->[1];
-  };
-  return 0 unless @headers;
-  Dwarn \@headers;
+  @headers = $self->_text_csv->header( $self->_csv_filehandle );
   my %header_map = ( map { $_ => 1 } @headers );
   for my $req_header ( @$req_headers ) {
     next if $header_map{$req_header};

templates/admin/import/index.html.ep

@@ -15,6 +15,7 @@
   <div class="col-12 mb-3">
     <h3 class="float-left">CSV Import</h3>
     <a href="<%= url_for . '/add' %>" class="btn btn-success float-right">Import Data</a>
+    <a href="<%= url_for '/admin/import_from' %>" class="btn btn-primary float-right">Import Suppliers/Transactions Data</a>
   </div>
   % for my $import ( $import_rs->all ) {
     % my $total = $import_rs->get_values( $import->id, 1, 1 )->count;

templates/admin/import_from/index.html.ep

@@ -18,12 +18,16 @@
   </div>
   <div class="col-12 mb-3">
     <p>Various import options depending on source. Each one is custom. For Creditor reports from LCC.</p>
+    <p><strong>NOTE:</strong> Files must be in CSV format.<br>
+    Redundant columns and rows above and to the left of the table in the CSV must be deleted.<br>
+    There can be no duplicate header columns, and there can be no fields with values outside the table.</p>
     <p>Warning: Large files will take a long time to process, just leave the tab open until the Success message appears.</p>
   </div>
   <div class="row">
     <div class="card col-md-6 m-3">
       <div class="card-body">
         <h4 class="card-title">LCC Procurement Import - Suppliers</h4>
+        <p>Expected headers at very least: "supplier_id", "name", "post_code".</p>
         <form action="/admin/import_from/suppliers" method="POST" enctype="multipart/form-data">
           <input type="file" name="suppliers_csv" accept="text/csv">
           <input type="submit" value="Upload Suppliers CSV">
@@ -33,6 +37,7 @@
     <div class="card col-md-6 m-3">
       <div class="card-body">
         <h4 class="card-title">LCC Procurement Import - Transactions</h4>
+        <p>Expected headers at very least: "supplier_id", "transaction_id", "net_amount", "vat amount" , "gross_amount".</p>
         <form action="/admin/import_from/transactions" method="POST" enctype="multipart/form-data">
           <input type="file" name="transactions_csv" accept="text/csv">
           <input type="submit" value="Upload Transactions CSV">