Allow featured images to be included in CSV export

assets/css/rainlab.blog-export.css

@@ -0,0 +1,3 @@
+.export-behavior .export-columns {
+    max-height: 450px !important;
+}

controllers/Posts.php

@@ -56,6 +56,13 @@ public function update($recordId = null)
         return $this->asExtension('FormController')->update($recordId);
     }
 
+    public function export()
+    {
+        $this->addCss('/plugins/rainlab/blog/assets/css/rainlab.blog-export.css');
+
+        return $this->asExtension('ImportExportController')->export();
+    }
+
     public function listExtendQuery($query)
     {
         if (!$this->user->hasAnyAccess(['rainlab.blog.access_other_posts'])) {

models/PostExport.php

@@ -29,21 +29,32 @@ class PostExport extends ExportModel
         ]
     ];
 
+    public $hasMany = [
+        'featured_images' => [
+            'System\Models\File',
+            'order' => 'sort_order',
+            'key' => 'attachment_id',
+            'conditions' => 'field = "featured_images" AND attachment_type = "RainLab\\\\Blog\\\\Models\\\\Post"'
+        ]
+    ];
+
     /**
      * The accessors to append to the model's array form.
      * @var array
      */
     protected $appends = [
         'author_email',
-        'categories'
+        'categories',
+        'featured_image_urls'
     ];
 
     public function exportData($columns, $sessionKey = null)
     {
         $result = self::make()
             ->with([
                 'post_user',
-                'post_categories'
+                'post_categories',
+                'featured_images'
             ])
             ->get()
             ->toArray()
@@ -69,4 +80,15 @@ public function getCategoriesAttribute()
 
         return $this->encodeArrayValue($this->post_categories->lists('name'));
     }
+
+    public function getFeaturedImageUrlsAttribute()
+    {
+        if (!$this->featured_images) {
+            return '';
+        }
+
+        return $this->encodeArrayValue($this->featured_images->map(function ($image) {
+            return $image->getPath();
+        }));
+    }
 }

models/postexport/columns.yaml

@@ -12,6 +12,7 @@ columns:
     slug: rainlab.blog::lang.post.slug
     categories: rainlab.blog::lang.post.categories
     author_email: rainlab.blog::lang.post.author_email
+    featured_image_urls: rainlab.blog::lang.post.featured_images
     created_at: rainlab.blog::lang.post.created_date
     updated_at: rainlab.blog::lang.post.updated_date
     published_at: rainlab.blog::lang.post.published_date