1 files changed, 42 insertions, 0 deletions
diff --git a/perllib/FixMyStreet/App/Form/Field/JSON.pm b/perllib/FixMyStreet/App/Form/Field/JSON.pm
new file mode 100644
index 000000000..4da4ef2b0
--- /dev/null
+++ b/perllib/FixMyStreet/App/Form/Field/JSON.pm
@@ -0,0 +1,42 @@
+package FixMyStreet::App::Form::Field::JSON;
+
+use HTML::FormHandler::Moose;
+extends 'HTML::FormHandler::Field::Hidden';
+
+use JSON::MaybeXS;
+use MIME::Base64;
+
+has '+inflate_method' => ( default => sub { \&inflate_json } );
+has '+deflate_method' => ( default => sub { \&deflate_json } );
+has '+fif_from_value' => ( default => 1 );
+
+sub inflate_json {
+    my ($self, $value) = @_;
+    return $value unless $value;
+    $value = decode_json(decode_base64($value));
+    return $value;
+}
+
+sub deflate_json {
+    my ($self, $value) = @_;
+    return $value unless $value;
+    $value = encode_base64(encode_json($value), "");
+    return $value;
+}
+
+__PACKAGE__->meta->make_immutable;
+use namespace::autoclean;
+
+1;
+
+__END__
+
+=pod
+
+=encoding UTF-8
+
+=head1 NAME
+
+FixMyStreet::App::Form::Field::JSON - used to store some data in a hidden field
+
+=cut