NAME

HTML::FormHandlerX::Field::JavaScript - a script tag with javascript code supplied via field for HTML::FormHandler.

VERSION

version 0.004

SYNOPSIS

This class can be used for fields that need to supply JavaScript code to control or modify the form. It will render the value returned by a form's js_code_<field_name> method, or the field's js_code attribute.

has_field 'user_update' => ( type => 'JavaScript',
   js_code => q`$('#fldId').on('change', myFunction);`
);

or using a method:

has_field 'user_update' => ( type => 'JavaScript' );
sub js_code_user_update {
   my ( $self, $field ) = @_;
   if( $field->value == 'foo' ) {
      return q`$('#fldId').on('change', myFunction);`;
   }
   else {
      return q`$('#otherFldId').on('change', myOtherFunction);`;
   }
}
#----
has_field 'usernames' => ( type => 'JavaScript' );
sub js_code_usernames {
    my ( $self, $field ) = @_;
    return q`$('#fldId').on('change', myFunction);`;
}

or set the name of the code generation method:

has_field 'user_update' => ( type => 'JavaScript', set_js_code => 'my_user_update' );
sub my_user_update {
  ....
}

or provide a 'render_method':

has_field 'user_update' => ( type => 'JavaScript', render_method => \&render_user_update );
sub render_user_update {
    my $self = shift;
    ....
    return q(
<script type="text/javascript">
  // code here
</script>);
}

The code generation methods should return a scalar string which will be wrapped in script tags. If you supply your own 'render_method' then you are responsible for calling $self->wrap_data yourself.

FIELD OPTIONS

We support the following additional field options, over what is inherited from HTML::FormHandler::Field

• js_code

  String containing the JavaScript code to be rendered inside script tags.

• set_js_code

  Name of method that gets called to generate the JavaScript code.

• do_minify

  Boolean to indicate whether code should be minified using JavaScript::Minifier::XS

FIELD METHODS

The following methods can be called on the field.

• wrap_js_code

  The wrap_js_code method minifies the JavaScript code and wraps it in script tags.

AUTHOR

Charlie Garrison garrison@zeta.org.au

COPYRIGHT AND LICENSE

This software is copyright (c) 2014 by Charlie Garrison.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.