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.\"
.IX Title "HTML::FormHandler::Manual::RenderingCookbook 3pm"
.TH HTML::FormHandler::Manual::RenderingCookbook 3pm "2022-03-25" "perl v5.34.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.SH "NAME"
HTML::FormHandler::Manual::RenderingCookbook \- rendering recipes
.SH "VERSION"
.IX Header "VERSION"
version 0.40068
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
Collection of rendering recipes
.SH "NAME"
HTML::FormHandler::Manual::Rendering::Cookbook
.SH "Recipes"
.IX Header "Recipes"
.SS "Custom renderer, custom attributes"
.IX Subsection "Custom renderer, custom attributes"
You want to be able to specify the attributes that are rendered in the 'td' tag
of the table renderer...
.PP
First make your own copy of 'HTML::FormHandler::Widget::Wrapper::Table, in your
own name space, and specify that name space in the 'widget_name_space' for the
form.
.PP
Change this line in the Table wrapper:
.PP
.Vb 1
\&    $output .= \*(Aq<td>\*(Aq . $self\->do_render_label($result) . \*(Aq</td>\*(Aq;
.Ve
.PP
to this:
.PP
.Vb 2
\&    my $td_attr = process_attrs($self\->get_tag(\*(Aqtd_attr\*(Aq) || {} );
\&    $output .= "<td$td_attr>" . $self\->do_render_label($result) . \*(Aq</td>\*(Aq;
.Ve
.PP
Now you can specify the attributes for the 'td' tag on a field:
.PP
.Vb 1
\&    has_field \*(Aqfoo\*(Aq => ( tags => { td_attr => { class => [\*(Aqemph\*(Aq, \*(Aqlabel\*(Aq] } } );
.Ve
.SS "Render a collection of checkboxes like a checkbox group"
.IX Subsection "Render a collection of checkboxes like a checkbox group"
.SS "Add a 'required' class to labels"
.IX Subsection "Add a 'required' class to labels"
Create a custom widget wrapper:
.PP
.Vb 1
\&    package MyApp::Form::Widget::Wrapper::CustomLabel;
\&
\&    use Moose::Role;
\&    with \*(AqHTML::FormHandler::Widget::Wrapper::Simple\*(Aq;
\&
\&    sub render_label {
\&        my ($self) = @_;
\&        return \*(Aq<label class="label\*(Aq . ($self\->required ?
\&            \*(Aq required\*(Aq : \*(Aq\*(Aq) .  \*(Aq" for="\*(Aq . $self\->id . \*(Aq">\*(Aq .
\&                 $self\->html_filter($self\->loc_label) . \*(Aq:
\&            </label>\*(Aq;
\&    }
.Ve
.PP
Or enable html5 output which adds a 'required' attribute.
.PP
Or use the 'html_attributes' callback:
.PP
.Vb 6
\&    <in a form>
\&    sub html_attributes {
\&        my ( $self, $field, $type, $attr ) = @_;
\&        push @{$attr\->{class}}, \*(Aqrequired\*(Aq
\&            if ( $type eq \*(Aqlabel\*(Aq && $field\->required );
\&    }
.Ve
.SH "AUTHOR"
.IX Header "AUTHOR"
FormHandler Contributors \- see HTML::FormHandler
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
This software is copyright (c) 2017 by Gerda Shank.
.PP
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.