CHG description and label

.editorconfig

@@ -0,0 +1,13 @@
+# Top-most EditorConfig file
+root = true
+
+[*]
+indent_style = tab
+indent_size = 4
+end_of_line = lf
+charset = UTF-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false

README.md

@@ -36,6 +36,17 @@ Add the following basic six files:
 
 ##### 1. DepotComponent.php
 This file contains class for the extension. The class extends MVCComponent.
+Compare this version with the original at [Tech Fry Tutorium](https://www.techfry.com/joomla/adding-basic-files-for-component).
+```php
+namespace KW4NZ\Component\Depot\Administrator\Extension;
+
+use Joomla\CMS\Extension\MVCComponent;
+
+class DepotComponent extends MVCComponent
+{
+
+}
+```
 
 ##### 2. provider.php
 This is a special file that tells Joomla how to initialize the component - which
@@ -112,3 +123,319 @@ the directory /admin/language/en-GB/ naming it
 - com_depot.sys.ini
 
 ---
+
+### Creating and managing Joomla database (b2_database)
+
+With the new git branch **b2_database** we continue our workflow.
+
+Joomla usually manage its content with a database. In our component, we use
+a MariaDB database. At the time of development of this component we have PHP8.2,
+and we use Mariadb database with version from 11.1,
+client 15.2 for Linux (x86_64) using readline 5.1
+We support MySQL and MariaDB; not tested support for PostgreSQL.
+
+In the manifest file \<component_name\>.xml, here the file **depot.xml**,
+there are installation instructions to "install", "uninstall", and 
+"update" the Joomla extension/component.
+
+The SQL plain text files are stored in and as:
+
+- admin/sql/
+	- install.mysql.utf8.sql
+	- uninstall.mysql.utf8.sql
+
+- admin/sql/updates/mysql/
+	- 0.0.1.sql
+	- 0.0.4.sql
+	- 0.0.5.sql
+
+#### Database table installation
+1. When the component is installed for the first time, the file
+**install.mysql.utf8.sql** is executed.
+1. If the component is already installed, the update
+scenario comes into play, the folder **admin/sql/updates/mysql/**:  Only the files with higher version
+numbers than the installed version of the component will be
+executed in ascending order.<br>
+Hint: The version of the installed component is stored in the
+Joomla's table "#__schemas".
+
+The "#__"-prefix is substituted automatically with the database prefix, (e.g. "jm_") which is defined in the configuration file (configuration.php) of the installed Joomla version as parameter $dbprefix.
+
+**install.mysql.utf8.sql**
+```sql
+DROP TABLE IF EXISTS `#__depot`;
+CREATE TABLE `#__depot`(
+	`id` SERIAL,
+	`component_name` VARCHAR(1024) CHARACTER SET ascii COLLATE ascii_general_ci NULL DEFAULT NULL
+		COMMENT 'unique component name (ASCII characters only)',
+	`alias` VARCHAR(1024) NOT NULL DEFAULT '',
+	`description` VARCHAR(4000) NOT NULL DEFAULT '',
+	`quantity` INT(10) UNSIGNED NOT NULL DEFAULT 0,
+	`quantity_exp` INT(11) NOT NULL DEFAULT 0
+		COMMENT 'Exponent of the quantity (10^x of the number, usually 0 i.e. 10⁰)',
+	`asset_id` INT(10) UNSIGNED NOT NULL DEFAULT 0 COMMENT 'FK to the #__assets table.',
+	`created` DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
+	`created_by` INT(10) UNSIGNED NOT NULL DEFAULT 0,
+	`checked_out` INT(11) NOT NULL DEFAULT 0,
+	`checked_out_time` DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
+	`modified` DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
+	`modified_by` INT(10) UNSIGNED NOT NULL DEFAULT 0,
+	`path` VARCHAR(400) NOT NULL DEFAULT '',
+	`state` TINYINT(4) NOT NULL DEFAULT 0
+		COMMENT 'Published=1,Unpublished=0,Archived=2,Trashed=-2',
+	`access` TINYINT(4) NOT NULL DEFAULT 0,
+	`params` VARCHAR(1024) NOT NULL DEFAULT '',
+	`image` VARCHAR(1024) NOT NULL DEFAULT '',
+	`ordering` INT(11) NOT NULL DEFAULT 0,
+	`version` int unsigned NOT NULL DEFAULT 1,
+	-- references to other tables:
+	`category_id` INT(11) NOT NULL DEFAULT 0,
+	`datasheet_id` INT(11) NOT NULL DEFAULT 0,
+	`datasheet_alt` VARCHAR(1024) NOT NULL DEFAULT '',
+	`manufacturer_id` INT(11) NOT NULL DEFAULT 0,
+	`stock_id` INT(11) NOT NULL DEFAULT 0,
+	PRIMARY KEY (`id`),
+	KEY `idx_state` (`state`),
+	KEY `idx_stock_id` (`stock_id`),
+	KEY `idx_manufacturer` (`manufacturer_id`),
+	UNIQUE KEY `aliasindex` (`alias`,`manufacturer_id`,`stock_id`)
+)	ENGINE=InnoDB
+	AUTO_INCREMENT=0
+	DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+INSERT INTO `#__depot` (`component_name`,`alias`,`description`,`quantity`,`created`,
+ `ordering`,`state`,`manufacturer_id`) VALUES
+ ('1N5404','1n5404','diode, rectifier 3A',9,'2023-09-25 15:00:00',1,1,1),
+ ('1N4148','1n4148','diode, general purpose',1234,'2023-09-25 15:15:15',2,1,2);
+```
+The table is created in the database when the component is installed.
+Also two lines of sample data are inserted into the table "#__depot".
+
+#### Database table uninstallation
+When the component is uninstalled the
+**uninstall.mysql.utf8 sql** is executed.
+We drop the used tables from the database.
+
+**install.mysql.utf8.sql**
+```sql
+DROP TABLE IF EXISTS `#__depot`;
+```
+#### Database table update
+When the component is updated the
+**admin/sql/updates/mysql** folder with its files is executed.
+
+Even if you do not need a database update, you can add an empty file in admin/sql/updates/mysql/0.0.2.sql to initialize the schema version.
+
+In future versions, if you plan to use database tables, the update can be performed automatically.
+We create an empty file, just with a comment "-- version 0.0.2"
+**admin/sql/updates/mysql/0.0.2.sql**
+
+```sql
+-- version 0.0.2
+```
+
+#### Manifest file for extensions
+The sql files are only executed if they exist in the \<component_name\>.xml manifest file. We add this after the namespace tag, just before the files information tag:
+```php
+<install> <!-- Runs on install -->
+	<sql>
+		<file driver="mysql" charset="utf8">sql/install.mysql.utf8.sql</file>
+	</sql>
+</install>
+<uninstall> <!-- Runs on uninstall -->
+	<sql>
+		<file driver="mysql" charset="utf8">sql/uninstall.mysql.utf8.sql</file>
+	</sql>
+</uninstall>
+<update>
+	<schemas>
+		<schemapath type="mysql">sql/updates/mysql</schemapath>
+	</schemas>
+</update>
+```
+The **\<version\> tag** of the manifest must be updated to 0.0.2 and
+also add the sql folder in the administration files section.
+
+#### Table class
+**src/table/DepotTable.php**
+
+For each database table, you have to define a table class. The model
+asks the table to get information or perform database operations.
+
+This table class has to be defined in admin/src/Table/DepotTable.php file.
+
+```php
+<?php
+namespace KW4NZ\Component\Depot\Administrator\Table;
+
+use Joomla\CMS\Table\Table;
+use Joomla\Database\DatabaseDriver;
+
+\defined('_JEXEC') or die;
+
+class DepotTable extends Table
+{
+	function __contruct(DatabaseDriver $db)
+	{
+		parent::__contruct('#__depot', 'id', $db);
+	}
+}
+```
+Joomla uses the **Table Object** to get item or record, insert records,
+update or delete records for the database operations.
+
+Methods in the table objects are:
+
+1. **load()** to load the existing record from the database, passing
+			the primary key of the record.
+1. **bind()** to set the new values for the fields.
+1. **check()** to perform any validation.
+1. **store()** to save the new values to the database.
+1. **delete()** to delete the record from the database.
+
+---
+
+### Get a Form in Joomla component
+
+The **Form** class of Joomla is used to create complex forms with flexible
+layouts and dynamic properties. First, the form fields are defined in the
+XML file. Then the view file gets the form from the model and layout file
+displays the form.
+
+#### XML Form file
+**admin/forms/part.xml**
+```xml
+<?xml version="1.0" encoding="UTF-8"?>
+<form>
+	<field
+		name="title" 
+		type="text" 
+		label="JGLOBAL_TITLE" 
+		required="true"
+	/>
+</form>
+```
+Similarly you can add other fields to the XML file.
+
+#### View file
+**admin/src/View/Part/HtmlView.php**
+
+This file is similar to the view file added earlier for the "Parts" view.
+The view file gets the form from the model in the display() method.
+```php
+<?php
+namespace KW4NZ\Component\Depot\Administrator\View\Part;
+use Joomla\CMS\MVC\View\HtmlView as BaseHtmlView;
+
+\defined('_JEDEC') or die;
+
+class HtmlView extends BaseHtmlView
+{
+	protected $form;
+	protected $item;
+
+	public function display($tpl = null)
+	{
+		$this->form = $this->get('Form');
+		$this->item = $this->get('Item');
+
+		parent::display($tpl);
+	}
+}
+```
+The code will look for the method **getForm()**
+and **getItem()** in the model file.
+We need to get the item to get the ID
+of the record in case of editing the existing record.
+
+#### Model file
+**admin/src/Model/PartModel.php**
+
+We need to extend the model class with the **AdminModel**.
+The AdminModel class extends FormModel class. The **getForm()**
+method gets the Form object for the edit form.
+
+```php
+namespace KW4NZ\Component\Depot\Administrator\Model;
+use Joomla\CMS\MVC\Model\AdminModel;
+
+\defined('_JEXEC') or die;
+
+class PartModel extends AdminModel
+{
+	public function getForm($data = array(), $loadData = true)
+	{
+		$form = $this->loadForm('com_depot.part',
+			'part', array('control' => 'jform',
+			'load_data' => $loadData));
+
+		if (empty($form)) {
+			return false;
+		}
+
+		return $form;
+	}
+}
+```
+The **loadForm()** and **preprocessForm()** methods are defined in
+the FromModel class and the **bind()** method is defined in the
+Form class. The first argument (name) of loadForm() is set to
+"com_depot.part". The second argument (form xml source) is "part",
+and the third argument is the associative array for options.
+
+The form is defined in the source file: **forms/part.xml**
+
+After you have set the $form variable with the Form object,
+you check to see if you are loading data to the form.
+If you want to pre-load data for the form, you include an element
+called "load_data" that is set to a boolean true.
+Then, the method calls the loadFormData() method to get the data
+for the form. This method gets any previously loaded data from
+the session or database.
+
+###### Modifying Form dynamically
+
+Inside the getForm() method, before returning the $form, you can modify the form with many methods of the Form class. You can easily fine-tune your forms dynamically before they are rendered.
+
+#### Layout file - rendering Form
+**tmpl/part/edit.php**
+
+After you get the form in the view file ($this->form), the form
+is rendered in the layout file (edit.php).
+
+```php
+<?php
+use Joomla\CMS\HTML\HTMLHelper;
+
+$wa = $this->document->getWebAssetManager();
+
+$wa->useScript('keepalive');
+$wa->useScript('form.validate');
+?>
+<form action="<?= Route::_('index.php?option=com_depot&layout=edit&id=' .
+	(int) $this->item->id); ?>"
+	method="post" name="adminForm" id="item-form" class="form-validate">
+
+	<?= $this->form->renderField('title'); ?>
+
+	<input type="hidden" name="task" value="part.edit" />
+	<?= HTMLHelper::_('form.token'); ?>
+</form>
+```
+The form validate script is required to submit the for. The renderField() method
+of the Form class displays the field - both label and input.
+
+We can access the form using following URL:
+```php
+administrator/index.php?option=com_depot&view=part&layout=edit
+```
+It displays edit.php layout file of the Part View. When the form is submitted, the
+data is sent to the controller depending upon the action buttons in the toolbar.
+
+Please remember to add the additional folder `form` to the Manifest file "depot.xml", i.e.
+just a line before `<folder>services</folder>` :
+```xml
+<folder>form</folder>
+```
+
+---

admin/forms/part.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<form>
+	<field
+		name="component_name"
+		type="text"
+		label="COM_DEPOT_FIELD_COMPONENT_NAME_LABEL"
+		description="COM_DEPOT_FIELD_COMPONENT_NAME_DESC"
+		required="true"
+	/>
+	<field
+		name="id"
+		type="text"
+		label="JGLOBAL_FIELD_ID_LABEL"
+		class="readonly"
+		default="0"
+		readonly="true"
+	/>
+</form>

admin/language/en-GB/com_depot.ini

@@ -5,4 +5,6 @@
 ; @license		GNU General Public License version 2 or later; see LICENSE.md
 ; @since		0.0.1
 ;
+COM_DEPOT_FIELD_COMPONENT_NAME_DESC="The name of the component is unique. Please do not enter special characters or umlauts."
+COM_DEPOT_FIELD_COMPONENT_NAME_LABEL="Component Name"
 COM_DEPOT_XML_DESCRIPTION="Depot, the component warehouse"

admin/services/provider.php

@@ -16,7 +16,6 @@ use Joomla\CMS\MVC\Factory\MVCFactoryInterface;
 use Joomla\DI\Container;
 use Joomla\DI\ServiceProviderInterface;
 use KW4NZ\Component\Depot\Administrator\Extension\DepotComponent;
-use Joomla\CMS\Extension\MVCComponent;
 
 return new class implements ServiceProviderInterface
 {

admin/sql/install.mysql.utf8.sql

@@ -3,17 +3,18 @@
 -- @author		Thomas Kuschel <thomas@kuschel.at>
 -- @copyright	(C) 2023 KW4NZ, <https://www.kuschel.at>
 -- @license		GNU General Public License version 2 or later; see LICENSE.md
--- @since		0.0.1
+-- @since		0.0.2
 
 DROP TABLE IF EXISTS `#__depot`;
-CREATE TABLE `#__depot`(
+CREATE TABLE `#__depot` (
 	`id` SERIAL,
 	`component_name` VARCHAR(1024) CHARACTER SET ascii COLLATE ascii_general_ci NULL DEFAULT NULL
 		COMMENT 'unique component name (ASCII characters only)',
 	`alias` VARCHAR(1024) NOT NULL DEFAULT '',
 	`description` VARCHAR(4000) NOT NULL DEFAULT '',
 	`quantity` INT(10) UNSIGNED NOT NULL DEFAULT 0,
-	`quantity_exp` INT(11) NOT NULL DEFAULT 0 COMMENT 'Exponent of the quantity (10^x of the number, usually 0 i.e. 10⁰)',
+	`quantity_exp` INT(11) NOT NULL DEFAULT 0
+		COMMENT 'Exponent of the quantity (10^x of the number, usually 0 i.e. 10⁰)',
 	`asset_id` INT(10) UNSIGNED NOT NULL DEFAULT 0 COMMENT 'FK to the #__assets table.',
 	`created` DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
 	`created_by` INT(10) UNSIGNED NOT NULL DEFAULT 0,
@@ -22,7 +23,8 @@ CREATE TABLE `#__depot`(
 	`modified` DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
 	`modified_by` INT(10) UNSIGNED NOT NULL DEFAULT 0,
 	`path` VARCHAR(400) NOT NULL DEFAULT '',
-	`state` TINYINT(4) NOT NULL DEFAULT 0 COMMENT 'Published=1,Unpublished=0,Archived=2,Trashed=-2',
+	`state` TINYINT(4) NOT NULL DEFAULT 0
+		COMMENT 'Published=1,Unpublished=0,Archived=2,Trashed=-2',
 	`access` TINYINT(4) NOT NULL DEFAULT 0,
 	`params` VARCHAR(1024) NOT NULL DEFAULT '',
 	`image` VARCHAR(1024) NOT NULL DEFAULT '',

admin/sql/uninstall.mysql.utf8.sql

@@ -3,6 +3,6 @@
 -- @author		Thomas Kuschel <thomas@kuschel.at>
 -- @copyright	(C) 2023 KW4NZ, <https://www.kuschel.at>
 -- @license		GNU General Public License version 2 or later; see LICENSE.md
--- @since		0.0.1
+-- @since		0.0.2
 
 DROP TABLE IF EXISTS `#__depot`;

admin/sql/updates/mysql/0.0.1.sql

@@ -0,0 +1,8 @@
+-- @package		Depot.SQL MariaDB -- UPDATE to 0.0.1
+-- @subpackage	com_depot
+-- @author		Thomas Kuschel <thomas@kuschel.at>
+-- @copyright	(C) 2023 KW4NZ, <https://www.kuschel.at>
+-- @license		GNU General Public License version 2 or later; see LICENSE.md
+-- @since		0.0.2
+
+-- dummy

admin/sql/updates/mysql/0.0.2.sql

@@ -0,0 +1,50 @@
+-- @package		Depot.SQL MariaDB -- UPDATE to 0.0.2
+-- @subpackage	com_depot
+-- @author		Thomas Kuschel <thomas@kuschel.at>
+-- @copyright	(C) 2023 KW4NZ, <https://www.kuschel.at>
+-- @license		GNU General Public License version 2 or later; see LICENSE.md
+-- @since		0.0.2
+
+CREATE TABLE IF NOT EXISTS `#__depot` (
+	`id` SERIAL,
+	`component_name` VARCHAR(1024) CHARACTER SET ascii COLLATE ascii_general_ci NULL DEFAULT NULL
+		COMMENT 'unique component name (ASCII characters only)',
+	`alias` VARCHAR(1024) NOT NULL DEFAULT '',
+	`description` VARCHAR(4000) NOT NULL DEFAULT '',
+	`quantity` INT(10) UNSIGNED NOT NULL DEFAULT 0,
+	`quantity_exp` INT(11) NOT NULL DEFAULT 0
+		COMMENT 'Exponent of the quantity (10^x of the number, usually 0 i.e. 10⁰)',
+	`asset_id` INT(10) UNSIGNED NOT NULL DEFAULT 0 COMMENT 'FK to the #__assets table.',
+	`created` DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
+	`created_by` INT(10) UNSIGNED NOT NULL DEFAULT 0,
+	`checked_out` INT(11) NOT NULL DEFAULT 0,
+	`checked_out_time` DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
+	`modified` DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
+	`modified_by` INT(10) UNSIGNED NOT NULL DEFAULT 0,
+	`path` VARCHAR(400) NOT NULL DEFAULT '',
+	`state` TINYINT(4) NOT NULL DEFAULT 0
+		COMMENT 'Published=1,Unpublished=0,Archived=2,Trashed=-2',
+	`access` TINYINT(4) NOT NULL DEFAULT 0,
+	`params` VARCHAR(1024) NOT NULL DEFAULT '',
+	`image` VARCHAR(1024) NOT NULL DEFAULT '',
+	`ordering` INT(11) NOT NULL DEFAULT 0,
+	`version` int unsigned NOT NULL DEFAULT 1,
+	-- references to other tables:
+	`category_id` INT(11) NOT NULL DEFAULT 0,
+	`datasheet_id` INT(11) NOT NULL DEFAULT 0,
+	`datasheet_alt` VARCHAR(1024) NOT NULL DEFAULT '',
+	`manufacturer_id` INT(11) NOT NULL DEFAULT 0,
+	`stock_id` INT(11) NOT NULL DEFAULT 0,
+	PRIMARY KEY (`id`),
+	KEY `idx_state` (`state`),
+	KEY `idx_stock_id` (`stock_id`),
+	KEY `idx_manufacturer` (`manufacturer_id`),
+	UNIQUE KEY `aliasindex` (`alias`,`manufacturer_id`,`stock_id`)
+)	ENGINE=InnoDB
+	AUTO_INCREMENT=0
+	DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+INSERT INTO `#__depot` (`component_name`,`alias`,`description`,`quantity`,`created`,
+ `ordering`,`state`,`manufacturer_id`) VALUES
+ ('1N5404','1n5404','diode, rectifier 3A',9,'2023-09-25 15:00:00',1,1,1),
+ ('1N4148','1n4148','diode, general purpose',1234,'2023-09-25 15:15:15',2,1,2);

admin/src/Controller/DisplayController.php

@@ -17,4 +17,4 @@ use Joomla\CMS\MVC\Controller\BaseController;
 class DisplayController extends BaseController
 {
 	protected $default_view = 'parts';
-}
+}

admin/src/Extension/DepotComponent.php

@@ -14,5 +14,4 @@ use Joomla\CMS\Extension\MVCComponent;
 
 class DepotComponent extends MVCComponent
 {
-
+}
-}

admin/src/Model/PartModel.php

@@ -0,0 +1,29 @@
+<?php
+/**
+ * @package		Depot.Administrator
+ * @subpackage	com_depot
+ * @author		Thomas Kuschel <thomas@kuschel.at>
+ * @copyright	(C) 2023 KW4NZ, <https://www.kuschel.at>
+ * @license		GNU General Public License version 2 or later; see LICENSE.md
+ * @since		0.0.3
+ */
+
+namespace KW4NZ\Component\Depot\Administrator\Model;
+
+use Joomla\CMS\MVC\Model\AdminModel;
+
+\defined('_JEXEC') or die;
+
+class PartModel extends AdminModel
+{
+	public function getForm($data = [], $loadData = true)
+	{
+		$form = $this->loadForm('com_depot.part', 'part', ['control' => 'jform', 'load_data' => $loadData]);
+
+		if (empty($form)) {
+			return false;
+		}
+
+		return $form;
+	}
+}

admin/src/Table/PartTable.php

@@ -0,0 +1,24 @@
+<?php
+/**
+ * @package		Depot.Administrator
+ * @subpackage	com_depot
+ * @author		Thomas Kuschel <thomas@kuschel.at>
+ * @copyright	(C) 2023 KW4NZ, <https://www.kuschel.at>
+ * @license		GNU General Public License version 2 or later; see LICENSE.md
+ * @since		0.0.2
+ */
+
+namespace KW4NZ\Component\Depot\Administrator\Table;
+
+use Joomla\CMS\Table\Table;
+use Joomla\Database\DatabaseDriver;
+
+\defined('_JEXEC') or die;
+
+class PartTable extends Table
+{
+	function __construct(DatabaseDriver $db)
+	{
+		parent::__construct('#__depot', 'id', $db);
+	}
+}

admin/src/View/Part/HtmlView.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * @package		Depot.Administrator
+ * @subpackage	com_depot
+ * @author		Thomas Kuschel <thomas@kuschel.at>
+ * @copyright	(C) 2023 KW4NZ, <https://www.kuschel.at>
+ * @license		GNU General Public License version 2 or later; see LICENSE.md
+ * @since		0.0.3
+ */
+
+namespace KW4NZ\Component\Depot\Administrator\View\Part;
+
+defined('_JEXEC') or die;
+
+// use Joomla\CMS\MVC\View\GenericDataException;
+use Joomla\CMS\MVC\View\HtmlView as BaseHtmlView;
+
+/**
+ * View to edit an article.
+ *
+ * @since  1.6
+ */
+class HtmlView extends BaseHtmlView
+{
+	/**
+	 * The \JForm object
+	 *
+	 * @var  \JForm
+	 */
+	protected $form;
+
+	/**
+	 * The active item
+	 *
+	 * @var  object
+	 */
+	protected $item;
+
+	/**
+	 * Execute and display a template script.
+	 *
+	 * @param   string  $tpl  The name of the template file to parse; automatically searches through the template paths.
+	 *
+	 * @return  mixed  A string if successful, otherwise an Error object.
+	 *
+	 * @throws \Exception
+	 * @since   1.6
+	 */
+	public function display($tpl = null)
+	{
+		$this->form = $this->get('Form');
+		$this->item = $this->get('Item');
+
+		//	if (count($errors = $this->get('Errors'))) {
+		//		throw new GenericDataException(implode("\n", $errors), 500);
+		//	}
+
+		return parent::display($tpl);
+	}
+}

admin/tmpl/part/edit.php

@@ -0,0 +1,26 @@
+<?php
+/**
+ * @package		Depot.Administrator
+ * @subpackage	com_depot
+ * @author		Thomas Kuschel <thomas@kuschel.at>
+ * @copyright	(C) 2023 KW4NZ, <https://www.kuschel.at>
+ * @license		GNU General Public License version 2 or later; see LICENSE.md
+ * @since		0.0.3
+ */
+use Joomla\CMS\HTML\HTMLHelper;
+use Joomla\CMS\Router\Route;
+
+/** @var Joomla\CMS\WebAsset\WebAssetManager $wa */
+$wa = $this->document->getWebAssetManager();
+$wa->useScript('form.validate')
+	->useScript('keepalive');
+
+?>
+<form action="<?php echo Route::_('index.php?option=com_depot&view=part&layout=edit&id=' . (int) $this->item->id); ?>"
+	method="post" name="adminForm" id="item-form" class="form-validate">
+
+	<?php echo $this->form->renderField('component_name'); ?>
+
+	<input type="hidden" name="task" value="part.edit" />
+	<?php echo HTMLHelper::_('form.token'); ?>
+</form>

admin/tmpl/parts/default.php

@@ -9,3 +9,5 @@
  */
 ?>
 <h2>Welcome to my Depot Component!</h2>
+
+<p>Link: <a href="index.php?option=com_depot&view=part&layout=edit">Part</a></p>

depot.xml

@@ -2,39 +2,14 @@
 <extension type="component" method="upgrade">
 	<name>Depot</name>
 	<author>KW4NZ</author>
-	<creationDate>2023-10-02</creationDate>
+	<creationDate>2023-10-06</creationDate>
 	<copyright>(C) KW4NZ Thomas Kuschel</copyright>
 	<license>GPL v2 +; see LICENSE.md</license>
 	<authorEmail>thomas@kuschel.at</authorEmail>
 	<authorUrl>https://kuschel.at</authorUrl>
-	<version>0.0.1</version>
+	<version>0.0.3</version>
 	<description>COM_DEPOT_XML_DESCRIPTION</description>
 	<namespace path="src/">KW4NZ\Component\Depot</namespace>
-	<files folder="site/">
-		<file>CODING_STANDARDS.md</file>
-		<file>LICENSE.md</file>
-		<file>README.md</file>
-	</files>
-	<administration>
-		<!--
-			Note that all & must be escaped to &amp; for the file to be valid
-			XML and be parsed by the installer
-		-->
-		<menu>COM_DEPOT_MENU</menu>
-		<submenu>
-			<menu link="option=com_depot">COM_DEPOT_MENU</menu>
-		</submenu>
-		<files folder="admin">
-			<folder>services</folder>
-			<folder>sql</folder>
-			<folder>src</folder>
-			<folder>tmpl</folder>
-		</files>
-		<languages folder="admin/language">
-			<language tag="en-GB">en-GB/com_depot.ini</language>
-			<language tag="en-GB">en-GB/com_depot.sys.ini</language>
-		</languages>
-	</administration>
 	<install> <!-- Runs on install -->
 		<sql>
 			<file driver="mysql" charset="utf8">sql/install.mysql.utf8.sql</file>
@@ -45,4 +20,50 @@
 			<file driver="mysql" charset="utf8">sql/uninstall.mysql.utf8.sql</file>
 		</sql>
 	</uninstall>
+	<update>
+		<schemas>
+			<schemapath type="mysql">sql/updates/mysql</schemapath>
+		</schemas>
+	</update>
+	<files folder="site/">
+		<file>CODING_STANDARDS.md</file>
+		<file>LICENSE.md</file>
+		<file>README.md</file>
+	</files>
+	<administration>
+		<!--
+			Note that all & must be escaped to &amp; for the file to be valid
+			XML and be parsed by the installer
+		-->
+		<menu img="class:barcode">COM_DEPOT_MENU</menu>
+		<submenu>
+			<menu
+				link="option=com_depot"
+				view="parts"
+				img="class:depot"
+				alt="Depot/Parts"
+				>
+				COM_DEPOT_MENU
+			</menu>
+			<menu
+				link="option=com_depot"
+				view="stocks"
+				img="class:depot-stocks"
+				alt="Depot/Stocks"
+				>
+				COM_DEPOT_MENU_STOCKS
+			</menu>
+		</submenu>
+		<files folder="admin">
+			<folder>forms</folder>
+			<folder>services</folder>
+			<folder>sql</folder>
+			<folder>src</folder>
+			<folder>tmpl</folder>
+		</files>
+		<languages folder="admin/language">
+			<language tag="en-GB">en-GB/com_depot.ini</language>
+			<language tag="en-GB">en-GB/com_depot.sys.ini</language>
+		</languages>
+	</administration>
 </extension>