Kirby custom Add Fields Plugin

Custom fields for Kirby's add dialog. This plugin allows to define the fields shown on Kirby's page add dialog in the corresponding page's blueprint.

Installation

Use one of the alternatives below.

Download

Download and copy this repository to /site/plugins/kirby-plugin-custom-add-fields.

Git submodule

git submodule add https://github.com/steirico/kirby-plugin-custom-add-fields.git site/plugins/kirby-plugin-custom-add-fields

Composer

composer require steirico/kirby-plugin-custom-add-fields

Compatibility

Kirby	Plugin
pre 3.6	1.5.0
3.6 and newer	2.0.0 and newer

Usage

Defining custom Add Fields

This plugin adds the extra property addFields to page blueprints. To define custom add fields do as you would do for defining regular fields but put the definition in the property addFields.

/blueprints/pages/remote.yml:

title: Blueprint with custom Add Fields

fields:
    # field definitions
    title:
        label: Title
        type: text
    content:
        label: Content
        type: textarea

# custom add fields definition
addFields:
    title:
        label: Title
        type: text
        required: true
        icon: title

    remoteUrl:
        label: URL to external Content
        type: select
        options:
            'https://jaspervdj.be/lorem-markdownum/markdown-html.html?no-wrapping=on': Lorem Markdownum
            'https://raw.githubusercontent.com/steirico/kirby-plugin-custom-add-fields/master/README.md': README
        icon: url

Reusing and Extending

The plugin supports the extends keyword for reusing and extending fields:

/blueprints/pages/event.yml:

....
addFields:
    extends: fields/event-common
    title:
        label: Title
        type: text
    host:
        extends: fields/contact
        label: Event Host

See the kirby docs for more information on reusing and extending field.

In such a manner, kirby's default add fields (title and slug) can be reused and extended:

/blueprints/pages/book.yml:

....
addFields:
    # Reuse title and slug
    # - kirby 3.6 and newer
    extends: fields/default-add-fields
    # - pre kirby v3.6
    # extends: fields/legacy-default-add-fields.yml

    # Add custom fields
    isbn:
        label: ISBN
        type: text

Using custom Add Fields

Values of custom add fields that correspond to fields of the page blueprint are taken into account for the new page straightforwardly. In the example above the value of title in the add page dialog will be set as page's title.

slug Handling

In order to have kirby adding pages correctly the property slug has to be set. There are three ways to define a page's slug:

1. Add a custom add field named slug in order to define the slug manually.
2. If a field named slug is missing the plugin will set the slug based on the current timestamp.
3. Set/overwrite the slug in a pages hook script (see below).

Using custom Add Fields in Hook Scripts

The values of the custom add fields can be used on the server side for modifying the page to be added.

To do so one can register a page.create:after hook and modify the page object.

The plugin also registers a generic hook which automatically detects and calls the page model's static method named hookPageCreate($page). Define a page model and the method as follow:

/site/models/remote.php:

<?php
class RemotePage extends Page {
    public static function hookPageCreate($page){
        // get value of add field remoteUrl
        $remoteUrl = $page->remoteUrl()->value();

        // fetch remote content
        $content = file_get_contents($remoteUrl);

        // update page field content
        $page->update(array(
            'content' => $content
        ));

        // set slug according to add field title
        $page->changeSlug(Str::slug($page->title()->value()));
    }
}

If exceptions are thrown in page.create:after hooks or in hookPageCreate($page), a corresponding error is sent back to the panel, but the newly created page remains. In such cases it is advisable to catch exceptions and delete the newly created page:

try {
    // set slug according to add field title
    $page->changeSlug(Str::slug($page->title()->value()));
} catch (Kirby\Exception\DuplicateException $e) {
    // A pages withe the same slug already exists.
    // Therefore, delete the newly created one.
    $page->delete(true);
}

Configure Redirects

Kirby's add dialog redirects to the newly created page. Since there is a related kirby issue if slugs are changed in hooks, this behavior can not be reproduced reliably. Therefore, the plugin's default behavior is to remain on the actual panel page after a page has been added.

If desired, redirect to the newly created page is possible on a per blueprint basis by setting the property redirect to true:

/blueprints/pages/parent.yml:

title: Parent Blueprint which skips the Add Dialog

# custom add fields definition
addFields:
    __dialog:
        redirect: true

If redirection to an existing page after creation is required, redirect can be set to that page id.

/blueprints/pages/parent.yml:

title: Parent Blueprint which skips the Add Dialog

# custom add fields definition
addFields:
    __dialog:
        redirect: my/existing/page/id

Force a specific Template

The template to be used for the new page can be forced by a field of the current page. By default, if a field called forcedTemplate exists on the current page its value is taken into account as template for the new page.

The field can be changed by kirby options:

/site/config/config.php:

<?php

return [
    // exitsing configurations
    'steirico.kirby-plugin-custom-add-fields.forcedTemplate.fieldName' => 'myForcedTemplateField'
];

Skip Add Dialog

The plugin allows to skip the add dialog (see forum).

/blueprints/pages/parent.yml:

title: Parent Blueprint which skips the Add Dialog

# custom add fields definition
addFields:
    __dialog:
        skip: true
        forcedTemplate: remote

Beside setting the property skip: true one has to define the template for the new page. This can be achieved either by setting the property forcedTemplate or by the means described in Force a specific Template.

Show / hide Template Select

As of Kirby 3.5.0 the add dialog's template select is hidden if only one option is available (except in debug mode). By default, the plugin imitates this behavior in respect of the Kirby version.

Independently of the Kirby version in use, the plugins allows control/force a certain behavior by the kirby option forceTemplateSelectionField:

/site/config/config.php:

<?php

return [
    // exitsing configurations
    'steirico.kirby-plugin-custom-add-fields.forceTemplateSelectionField' => true
];

Setting the option to true will always make the add dialog show the template select. Setting it to false will hide the template select if only one template is available.

Know issues

There are some known issues related to this plugin:

• Some fields Fields such as the pages field perform additional requests to the backend. Although the pages field works as of v1.1.1, such fields may not work with this plugin. Feel free to file an issue if you encounter a broken field.
• When installed, the kirby3-security-headers adds CSP headers to the panel, breaking this plugin. As a workaround, you may disable it like this:

  'bnomei.securityheaders.enabled' => function () {
    # Panel check, borrowed from @bnomei's `security-headers`
    # See https://github.com/bnomei/kirby3-security-headers/issues/18#issuecomment-709985170
    $isPanel = strpos(
        kirby()->request()->url()->toString(),
        kirby()->urls()->panel
    ) !== false;
  
    if ($isPanel) {
        return false;
    }
  
    return true; // or 'force'
  }

License

MIT

Credits and Contributors

• Rico Steiner
• Nils Hörrmann
• mvilskersts
• Martin Folkers