add hierarchical categories

Author: serhiivinichuk

Diff for: CHANGELOG.md

@@ -0,0 +1,6 @@
+# Change Log
+All notable changes to this project will be documented in this file.
+
+## Unreleased
+### Added
+- Hierarchical category tree: made change to FancytreeWidget, Fancytree.js. [See more](https://github.com/mar10/fancytree/pull/342)

Diff for: backend/controllers/CategoryController.php

@@ -2,12 +2,12 @@
 
 namespace backend\controllers;
 
-use Yii;
-use common\models\Category;
 use backend\models\CategorySearch;
+use common\models\Category;
+use Yii;
+use yii\filters\VerbFilter;
 use yii\web\Controller;
 use yii\web\NotFoundHttpException;
-use yii\filters\VerbFilter;
 
 /**
  * CategoryController implements the CRUD actions for Category model.
@@ -62,13 +62,22 @@ public function actionCreate()
     {
         $model = new Category();
 
-        if ($model->load(Yii::$app->request->post()) && $model->save()) {
-            return $this->redirect(['view', 'id' => $model->id]);
-        } else {
-            return $this->render('create', [
-                'model' => $model,
-            ]);
+        if ($model->load(Yii::$app->request->post()) && $model->validate()) {
+            if (!isset($model->parentId)) {
+                $result = $model->saveNode();
+            } else {
+                $parent = Category::findOne($model->parentId);
+                $result = $model->appendTo($parent);
+            }
+
+            if ($result) {
+                return $this->redirect(['view', 'id' => $model->id]);
+            }
         }
+
+        return $this->render('create', [
+            'model' => $model,
+        ]);
     }
 
     /**
@@ -81,13 +90,22 @@ public function actionUpdate($id)
     {
         $model = $this->findModel($id);
 
-        if ($model->load(Yii::$app->request->post()) && $model->save()) {
-            return $this->redirect(['view', 'id' => $model->id]);
-        } else {
-            return $this->render('update', [
-                'model' => $model,
-            ]);
+        if ($model->load(Yii::$app->request->post()) && $model->validate()) {
+            if (!isset($model->parentId)) {
+                $result = $model->saveNode();
+            } else {
+                $parent = Category::findOne($model->parentId);
+                $result = $model->appendTo($parent);
+            }
+
+            if ($result) {
+                return $this->redirect(['view', 'id' => $model->id]);
+            }
         }
+
+        return $this->render('update', [
+            'model' => $model,
+        ]);
     }
 
     /**

Diff for: backend/views/category/_form.php

@@ -1,18 +1,14 @@
 <?php
 
-use common\models\Category;
-use kartik\widgets\Select2;
+use wbraganca\fancytree\FancytreeWidget;
 use yii\helpers\Html;
 use yii\widgets\ActiveForm;
 
 /* @var $this yii\web\View */
-/* @var $model common\models\Category */
 /* @var $form yii\widgets\ActiveForm */
-
-$query = Category::find();
-if (!$model->isNewRecord)
-    $query->where(['!=', 'id', $model->id]);
-$categories = \yii\helpers\ArrayHelper::map($query->all(), 'id', 'name')
+/* @var $model \common\models\Category */
+$query = \common\models\Category::find();
+$data = $query->dataFancytree();
 ?>
 
 <div class="category-form">
@@ -21,16 +17,15 @@
 
     <?= $form->field($model, 'name')->textInput(['maxlength' => 255]) ?>
 
-    <?= $form->field($model, 'parent_id')->widget(Select2::className(), [
-        'data' => $categories,
-        'options' => ['placeholder' => 'Select a parent category ...'],
-        'pluginOptions' => [
-            'allowClear' => true,
-        ],
+    <?= $form->field($model, 'parentId')->widget(FancytreeWidget::className(), [
+        'options' => [
+            'source' => $data,
+        ]
     ]) ?>
 
     <div class="form-group">
-        <?= Html::submitButton($model->isNewRecord ? 'Create' : 'Update', ['class' => $model->isNewRecord ? 'btn btn-success' : 'btn btn-primary']) ?>
+        <?= Html::submitButton($model->isNewRecord ? 'Create' : 'Update',
+            ['class' => $model->isNewRecord ? 'btn btn-success' : 'btn btn-primary']) ?>
     </div>
 
     <?php ActiveForm::end(); ?>

Diff for: common/components/Catalog.php

@@ -13,27 +13,7 @@ class Catalog extends Component
      */
     public function getCategories()
     {
-        $categories = Category::find()->orderBy(['parent_id' => SORT_ASC, 'id' => SORT_ASC])->all();
-        $tree = $this->buildTree($categories, null);
-
-        return $tree;
-    }
-
-    protected function buildTree(array $elements, $parentId = 0)
-    {
-        $branch = [];
-
-        foreach ($elements as $element) {
-            if ($element['parent_id'] == $parentId) {
-                $children = $this->buildTree($elements, $element['id']);
-                if ($children) {
-                    $element['children'] = $children;
-                }
-                $branch[] = $element;
-            }
-        }
-
-        return $branch;
+        return Category::find()->dataFancytree();
     }
 
 }