First step of converting legacy ExtraVar class to module

modules/extravar/conf/info.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module version="0.2">
+	<title xml:lang="ko">확장 변수</title>
+	<title xml:lang="en">Extra Input Fields</title>
+	<description xml:lang="ko">회원정보, 문서 등의 사용자 정의 입력 항목을 관리합니다.</description>
+	<description xml:lang="en">Manage custom input fields in member information, documents, etc.</description>
+	<version>RX_VERSION</version>
+	<date>RX_CORE</date>
+	<category>service</category>
+	<author link="https://rhymix.org">
+		<name xml:lang="ko">Rhymix</name>
+		<name xml:lang="en">Rhymix</name>
+	</author>
+</module>

modules/extravar/conf/module.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<module>
+	<actions>
+		<action name="dispExtravarAdminConfig" class="Controllers\Config" menu_name="extravar" menu_index="true" admin_index="true" />
+		<action name="procExtravarAdminInsertConfig" class="Controllers\Config" standalone="true" />
+	</actions>
+	<menus>
+		<menu name="extravar">
+			<title xml:lang="ko">확장 변수</title>
+			<title xml:lang="en">Extra Input Fields</title>
+		</menu>
+	</menus>
+</module>

modules/extravar/controllers/Base.php

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+<?php
+
+namespace Rhymix\Modules\Extravar\Controllers;
+
+/**
+ * Base class for Extravar module.
+ */
+class Base extends \ModuleObject
+{
+
+}

modules/extravar/controllers/Config.php

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+<?php
+
+namespace Rhymix\Modules\Extravar\Controllers;
+
+use Context;
+use ModuleController;
+use ModuleModel;
+use Rhymix\Framework\Exceptions\TargetNotFound;
+use Rhymix\Framework\Storage;
+
+/**
+ * Controller for module configuration by administrator.
+ */
+class Config extends Base
+{
+	/**
+	 * Display the config page.
+	 */
+	public function dispExtravarAdminConfig()
+	{
+		// Get current module config.
+		$config = ModuleModel::getModuleConfig($this->module) ?: new \stdClass;
+		Context::set('config', $config);
+
+		// Get the list of installed skins.
+		$skins = ModuleModel::getSkins($this->module_path);
+		Context::set('skin_list', $skins);
+
+		// Set admin template path.
+		$this->setTemplatePath($this->module_path . 'views');
+		$this->setTemplateFile('config.blade.php');
+	}
+
+	/**
+	 * Save module config.
+	 */
+	public function procExtravarAdminInsertConfig()
+	{
+		// Get current module config.
+		$config = ModuleModel::getModuleConfig($this->module) ?: new \stdClass;
+
+		// Update the config object.
+		$vars = Context::getRequestVars();
+		$config->skin = trim($vars->skin ?? '');
+		if (!Storage::isDirectory(sprintf('%s/skins/%s/', rtrim($this->module_path, '/'), $config->skin)))
+		{
+			throw new TargetNotFound;
+		}
+
+		// Save the updated config.
+		$output = ModuleController::getInstance()->insertModuleConfig($this->module, $config);
+		if (!$output->toBool())
+		{
+			return $output;
+		}
+
+		// Redirect back to the config page.
+		$this->setMessage('success_updated');
+		$this->setRedirectUrl(Context::get('success_return_url') ?: getNotEncodedUrl([
+			'module' => 'admin',
+			'act' => 'dispExtravarAdminConfig',
+		]));
+	}
+}

modules/extravar/controllers/Install.php

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+<?php
+
+namespace Rhymix\Modules\Extravar\Controllers;
+
+/**
+ * Install class for Extravar module.
+ */
+class Install extends Base
+{
+
+}

modules/extravar/skins/default/skin.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<skin version="0.2">
+    <title xml:lang="ko">기본 스킨</title>
+    <title xml:lang="en">Default Skin</title>
+    <description xml:lang="ko">기존 버전과 호환되는 확장변수 입력란 코드를 제공합니다.</description>
+    <description xml:lang="en">Provides input form codes compatible with older versions.</description>
+    <version>1.0</version>
+    <date>2024-04-01</date>
+	<author link="https://rhymix.org">
+		<name xml:lang="ko">Rhymix</name>
+		<name xml:lang="en">Rhymix</name>
+	</author>
+</skin>

modules/extravar/views/config.blade.php

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+@include ('header.blade.php')
+
+<form action="./" class="x_form-horizontal" method="post">
+	<input type="hidden" name="module" value="member" />
+	<input type="hidden" name="act" value="procExtravarAdminInsertConfig" />
+	<input type="hidden" name="success_return_url" value="{{ getUrl(['module' => 'admin', 'act' => $act]) }}" />
+	<input type="hidden" name="xe_validator_id" value="modules/extravar/views/config/1" />
+	@if ($XE_VALIDATOR_MESSAGE && $XE_VALIDATOR_ID === 'modules/extravar/views/config/1')
+		<div class="message {{ $XE_VALIDATOR_MESSAGE_TYPE }}">
+			<p>{{ $XE_VALIDATOR_MESSAGE }}</p>
+		</div>
+	@endif
+	<div class="x_control-group">
+		<label class="x_control-label" for="skin">{{ $lang->skin }}</label>
+		<div class="x_controls">
+			<select id="skin" name="skin">
+				@foreach ($skin_list as $key => $val)
+					<option value="{{ $key }}" @selected(isset($config->skin) && $key === $config->skin)>
+						{{ $val->title }} ({{ $key }})
+					</option>
+				@endforeach
+			</select>
+		</div>
+	</div>
+	<div class="x_clearfix btnArea">
+		<span class="x_pull-right">
+			<button type="submit" class="x_btn x_btn-primary">{{ $lang->cmd_save }}</button>
+		</span>
+	</div>
+</form>

modules/extravar/views/header.blade.php

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+<div class="x_page-header">
+	<h1>{{ $lang->extra_vars }}</h1>
+</div>
+<ul class="x_nav x_nav-tabs">
+	<li @class(['x_active' => $act === 'dispExtravarAdminConfig'])>
+		<a href="{{ getUrl(['module' => 'admin', 'act' => 'dispExtravarAdminConfig']) }}">{{ $lang->skin }}</a>
+	</li>
+</ul>