docs: updated documentation for Configuration component.

docs/_static/tablefix.css

@@ -7,8 +7,11 @@
     margin-bottom: 24px;
     max-width: 100%;
     overflow: visible;
+    white-space: normal !important;
+    word-break: break-word !important;
 }
 
 .wy-table-responsive th p {
     margin-bottom: unset;
-}
+}
+

docs/conf.py

@@ -74,6 +74,8 @@
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
 html_static_path = ['_static']
+html_css_files = ['tablefix.css']
+
 
 # Please add links here that do not pass the "make checklinks" check.
 # A little context on the reason for ignoring is greatly appreciated!

docs/plugins/config.rst

@@ -22,6 +22,7 @@
 
 .. list-table::
     :header-rows: 1
+    :widths: 15 15 40 
 
     * - Key
       - Type
@@ -99,6 +100,7 @@
 
 .. list-table::
     :header-rows: 1
+    :widths: 15 20 65 
 
     * - Key
       - URL prefix
@@ -127,8 +129,11 @@
 
 Route definitions define the route's method, path, controller, parameters, and others defined below.
 
+
+
 .. list-table::
     :header-rows: 1
+    :widths: 28 20 25 60
 
     * - Key
       - Is required?
@@ -170,6 +175,7 @@
 
 .. list-table::
     :header-rows: 1
+    :widths: 15 20 50
 
     * - Parameter
       - Default value
@@ -290,6 +296,7 @@
 
 .. list-table::
     :header-rows: 1
+    :widths: 25 50
 
     * - Key
       - Description
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 .. list-table::
     :header-rows: 1
+    :widths: 25 15 25 50 
 
     * - Key
       - Is required?
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 .. list-table::
     :header-rows: 1
+    :widths: 15 15 50 
 
     * - Key
       - Tag
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 .. list-table::
     :header-rows: 1
+    :widths: 25 17 15 50
 
     * - Key
       - Is required?
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 .. list-table::
     :header-rows: 1
+    :widths: 35 27 50 
 
     * - Tag
       - Supported tag arguments
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 .. list-table::
     :header-rows: 1
+    :widths: 25 15 50 
 
     * - Tag
       - Supported tag arguments
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 .. list-table::
     :header-rows: 1
+    :widths: 40 20 50 
 
     * - Tag
       - Supported tag arguments
@@ -699,4 +712,191 @@
 
 .. note:: The default value must match the value's type for Mautic to typecast and transform appropriately. For example, if there isn't a specific default value to declare, define an empty array, ``[]``, for an array type; zero, ``0``, for an integer type; ``TRUE`` or ``FALSE`` for boolean types; and so forth. Services leveraging parameters should accept and handle ``NULL`` for integer and string types, excluding ``0``.
 
-.. note:: Parameters aren't exposed to the UI by default. See :ref:`components/config:Configuration` for more information.
+.. note:: Parameters aren't exposed to the UI by default. See :ref:`components/config:Configuration` for more information.
+
+
+Custom config parameters
+************************
+
+You can define custom configuration parameters in your Plugin to support configurable features, such as enabling or disabling functions.
+
+Mautic Plugins allow you to define these parameters for use within your Plugin’s code. Store these parameters in ``config/local.php``, and define their default values in the Plugin’s own config file to ensure stability and avoid errors. 
+
+To avoid errors during cache compilation or when accessing parameters directly from the container without checking for their existence, always define custom parameters in the :ref:`plugins/config:Parameters config items`. This guarantees that the parameter exists and has a fallback value.
+
+To add these configuration options in Mautic's configuration section, you’ll need:
+
+- An :doc:`event subscriber </plugins/event_listeners>` to register the configuration.
+- A :doc:`Form type </components/forms>` that defines the fields. 
+- A specific view for rendering the form.
+
+.. note::
+
+   To translate the Plugin’s tab label in the configuration form, include a translation key like ``mautic.config.tab.helloworld_config`` in the Plugin’s ``messages.ini`` file. Replace ``helloworld_config`` with the ``formAlias`` used when registering the form in the event subscriber.
+
+
+Config event subscriber
+=======================
+
+This allows Plugins to interact with Mautic's configuration events. It listens to two important events: ``ConfigEvents::CONFIG_ON_GENERATE`` and ``ConfigEvents::CONFIG_PRE_SAVE``.
+
+The following code example shows how a Plugin structures its event subscriber.
+
+.. code-block:: php
+
+    <?php
+
+    declare(strict_types=1);
+
+    namespace MauticPlugin\HelloWorldBundle\EventListener;
+    use Mautic\ConfigBundle\Event\ConfigEvent;
+    use Mautic\ConfigBundle\ConfigEvents;
+    use Mautic\ConfigBundle\Event\ConfigBuilderEvent;
+    use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+    final class ConfigSubscriber extends EventSubscriberInterface
+    {
+        /**
+         * @return mixed[]
+         */
+        static public function getSubscribedEvents(): array
+        {
+            return [
+                ConfigEvents::CONFIG_ON_GENERATE => ['onConfigGenerate', 0],
+                ConfigEvents::CONFIG_PRE_SAVE    => ['onConfigSave', 0]
+            ];
+        }
+
+        public function onConfigGenerate(ConfigBuilderEvent $event): void
+        {
+            $event->addForm(
+                [
+                    'formAlias'  => 'helloworld_config',
+                    'formTheme'  => 'HelloWorldBundle:FormTheme\Config',
+                    'parameters' => $event->getParametersFromConfig('HelloWorldBundle')
+                ]
+            );
+        }
+
+        public function onConfigSave(ConfigEvent $event): void
+        {
+            /** @var array $values */
+            $values = $event->getConfig();
+            // Manipulate the values
+            if (!empty($values['helloworld_config']['custom_config_option'])) {
+                $values['helloworld_config']['custom_config_option'] = htmlspecialchars($values['helloworld_config']['custom_config_option']);
+            }
+            // Set updated values 
+            $event->setConfig($values);
+        }
+    }
+
+
+Subscribed events
+-----------------
+
+The event subscriber listens to the following events:
+
+- ``ConfigEvents::CONFIG_ON_GENERATE``:
+  Mautic dispatches this event when it builds the configuration form. This allows the Plugin to inject its own tab and configuration options.
+
+- ``ConfigEvents::CONFIG_PRE_SAVE``:
+  Mautic triggers this event before it renders the form values and saves them to the ``local.php`` file. This allows the Plugin to clean up or modify the data before writing it to ``local.php``.
+
+Generate plugin configuration
+-----------------------------
+.. vale on
+To register Plugin’s configuration details during the ``ConfigEvents::CONFIG_ON_GENERATE event``, call the ``addForm()`` method on the ``ConfigBuilderEvent`` object. The method expects an array with the following elements:
+
+.. list-table::
+    :header-rows: 1
+    :widths: 15 50 
+
+    * - Key
+      - Description
+    * - ``formAlias``
+      - The alias of the form type class that defines the expected form elements.
+    * - ``formTheme``
+      - The view that formats the configuration form elements, for example, ``HelloWorldBundle:FormTheme\Config``.
+    * - ``parameters``
+      - An array of custom configuration elements. ``Use $event->getParametersFromConfig('HelloWorldBundle')`` to retrieve them from the plugin’s configuration file.
+.. vale off
+
+Modify configuration before saving
+----------------------------------
+
+To modify the form data before saving, use the ``ConfigEvents::CONFIG_PRE_SAVE event``. This  event is triggered just before values are saved to the ``local.php`` file, allowing the Plugin to adjust them.
+
+Register the event subscriber
+-----------------------------
+
+Register the subscriber through the Plugin’s configuration in the ``services[events]`` in :ref:`plugins/config:Service config items`. This ensures that the plugin listens for the events and reacts accordingly.
+
+
+Config form
+===========
+
+The form type is used to generate the form fields in the main configuration form. See the :doc:`Forms documentation</components/forms>` for more information about using form types.
+
+Remember that the form type must be registered through the Plugin’s config in the ``services[forms]`` in :ref:`plugins/config:Service config items`
+.
+
+Below is an example of a form type class that adds a custom configuration option to the Plugin's configuration form.
+
+.. code-block:: php
+
+    <?php
+    // plugins/HelloWorldBundle/Form/Type/ConfigType.php
+
+    namespace MauticPlugin\HelloWorldBundle\Form\Type;
+
+    use Symfony\Component\Form\AbstractType;
+    use Symfony\Component\Form\FormBuilderInterface;
+
+    final class ConfigType extends AbstractType
+    {
+        /**
+         * @param mixed[] $options
+         */
+        public function buildForm(FormBuilderInterface $builder, array $options): void
+        {
+            $builder->add(
+                'custom_config_option',
+                'text',
+                [
+                    'label' => 'plugin.helloworld.config.custom_config_option',
+                    'data'  => $options['data']['custom_config_option'],
+                    'attr'  => [
+                        'tooltip' => 'plugin.helloworld.config.custom_config_option_tooltip'
+                    ]
+                ]
+            );
+        }
+    }
+
+Config template
+===============
+
+Registering a form theme as ``HelloWorldBundle:FormTheme\Config`` in the event listener tells the ConfigBundle to look in the HelloWorldBundle’s ``Resources/views/FormTheme/Config`` folder for templates. Specifically, it will look for a template named ``_config_{formAlias}_widget.html.twig``, where ``{formAlias}`` is the same as the ``formAlias`` set in the Plugin’s ``ConfigEvents::CONFIG_ON_GENERATE`` event listener.
+
+The template should be structured in a panel format to match the rest of the configuration UI.
+
+Below is an example of how the template should be structured:
+
+.. code-block:: twig  
+
+    {# plugins/HelloWorldBundle/Views/FormTheme/Config/_config_helloworld_config_widget.html.twig #}  
+    <div class="panel panel-primary">
+        <div class="panel-heading">
+            <h3 class="panel-title">{{ 'mautic.config.tab.helloworld_config'|trans }}</h3> 
+        </div>
+        <div class="panel-body">  
+            {% for field in form.children %}  
+                <div class="row">  
+                    <div class="col-md-6">  
+                        {{ form_row(field) }}  
+                    </div>  
+                </div>  
+            {% endfor %}  
+        </div>  
+    </div>