Allow questionnaire pages to be revisited within 2 minutes

Users who double click links were seeing an error when visiting the
questionnaire page. This change gives a grace period of two minutes
for revisiting the questionnaire page.

Fixes #2123.

1 files changed, 2 insertions, 1 deletions

diff --git a/perllib/FixMyStreet/App/Controller/Questionnaire.pm b/perllib/FixMyStreet/App/Controller/Questionnaire.pm
index 58848f546..696529660 100755
--- a/perllib/FixMyStreet/App/Controller/Questionnaire.pm
+++ b/perllib/FixMyStreet/App/Controller/Questionnaire.pm
@@ -33,7 +33,8 @@ sub check_questionnaire : Private {
 
     my $problem = $questionnaire->problem;
 
-    if ( $unanswered && $questionnaire->whenanswered ) {
+    my $cutoff = DateTime->now()->subtract( minutes => 2 );
+    if ( $unanswered && $questionnaire->whenanswered && $questionnaire->whenanswered < $cutoff) {
         my $problem_url = $c->cobrand->base_url_for_report( $problem ) . $problem->url;
         my $contact_url = $c->uri_for( "/contact" );
         my $message = sprintf(_("You have already answered this questionnaire. If you have a question, please <a href='%s'>get in touch</a>, or <a href='%s'>view your problem</a>.\n"), $contact_url, $problem_url);