NAME

HTML::Shakan - Form HTML generator/validator

SYNOPSIS

    use HTML::Shakan;
    sub form {
        my $req = shift;
        HTML::Shakan->new(
            fields => [ @_ ],
            request => $req,
            model => 'DataModel',
        );
    }
    sub edit {
        my $req = shift;
        my $row = $model->get('user' => $req->param('id'));
        my $form = form(
            $req => (
                TextField(name => 'name', label => 'Your name', filter => [qw/WhiteSpace/]),
                EmailField(name => 'email', label => 'Your email'),
            ),
        );
        if ($req->submitted_and_valid) {
            $form->model->update($row);
            redirect('edit_thanks');
        } else {
            $form->model->fill($row);
            render(form => $form);
        }
    }
    sub add {
        my $req = shift;
        my $form = form(
            $req => (
                TextField(name => 'name', label => 'Your name'),
                EmailField(name => 'email', label => 'Your email'),
            )
        );
        if ($req->submitted_and_valid) {
            $form->model->insert($model => 'user');
            redirect('edit_thanks');
        }
        render(form => $form);
    }
    # in your template
    <? if ($form->has_error) { ?><div class="error"><?= $form->error_message() ?></div><? } ?>
    <form method="post" action="add">
    <?= $form->render() ?>
    <p><input type="submit" value="add" /></p>
    </form>

DESCRIPTION

HTML::Shakan is yet another form generator.

THIS IS BETA.API WILL CHANGE.

ATTRIBUTES

"custom_validation"

    form 'login' => (
        fields => [
            TextField(name => 'login_id'),
            PasswordField(name => 'login_pw'),
        ],
        custom_validation => sub {
            my $form = shift;
            if ($form->is_valid && !MyDB->retrieve($form->param('login_id'), $form->param('login_pw'))) {
                $form->set_error('login' => 'failed');
            }
        }
    );
    

You can set custom validation callback, validates the field set in the form. For example, this is useful for login form.

"submitted"

Returns true if the form has been submitted.

This attribute will return true if a value for any known field name was submitted.

"has_error"

Return true if request has an error.

"submitted_and_valid"

Shorthand for "$form->submitted && !$form->has_error"

"params"

Returns form parameters. It is Hash::MultiValue object.

benchmarking

form generation

                     Rate         formfu         shakan shakan_declare
    formfu         1057/s             --           -77%           -84%
    shakan         4695/s           344%             --           -31%
    shakan_declare 6757/s           539%            44%             --

What's shakan

Shakan is 左官 in Japanese.

If you want to know about shakan, please see <http://ja.wikipedia.org/wiki/%E5%B7%A6%E5%AE%98>

左官 should pronounce 'sakan', formally. but, edokko pronounce 左官 as shakan.

METHODS

"my $html = $shakan->render(); :Str"

Render form.

"$shakan->render_field($name); :Str"

Render partial form named "<$name">.

"$shakan->param($key:Str); :Value[s]"

Retrive the value of the key from parameters. It's behaviour is similar to traditional request objects. (ex. CGI, Plack::Request) That is, it returns single scalar at scalar context and returns array at array context.

AUTHOR

Tokuhiro Matsuno <tokuhirom @ gmail.com>

SEE ALSO

HTML::FormFu

ToscaWidgets

LICENSE

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