title: Django ckeditor can not add youtube plugin
body: <p>I have seen this tutorial <a href="https://samulinatri.com/blog/django-ckeditor-codesnippet-hightlightjs-youtube/" rel="nofollow noreferrer">https://samulinatri.com/blog/django-ckeditor-codesnippet-hightlightjs-youtube/</a> and I have downloaded the youtube plugin here <a href="https://ckeditor.com/cke4/addon/youtube" rel="nofollow noreferrer">https://ckeditor.com/cke4/addon/youtube</a> </p>
  
  <p>Then I created the youtube folder and pushed it into it. Specifically my_project / static / ckeditor / ckeditor / plugins / youtube /</p>
  
  <p>After I python manage.py runserver, field ['content'] show normal, field ['content1'] it doesn't work (does not display frames textarea).</p>
  
  <p>Someone helped me check, I did something wrong. Thanks !!!</p>
  
  <h1>File model.py</h1>
  
  <pre><code>class Posts(models.Model):
      title = models.CharField(max_length=50)
      content = RichTextUploadingField(extra_plugins=['codesnippet'],)
      content1 = RichTextUploadingField(
          config_name='special',
          extra_plugins=['youtube'],
          external_plugin_resources=[(
              'youtube',
              '/static/ckeditor/ckeditor/plugins/youtube/youtube/',
              'plugin.js',
          )],
      )
  </code></pre>
  
  <h1>File setting.py</h1>
  
  <pre><code>INSTALLED_APPS = [
      'suit',
      'django.contrib.admin',
      'django.contrib.auth',
      'django.contrib.contenttypes',
      'django.contrib.sessions',
      'django.contrib.messages',
      'django.contrib.staticfiles',
      'django.contrib.sites',
  
      'ckeditor',
      'ckeditor_uploader',
  ]
  
  CKEDITOR_UPLOAD_PATH = "uploads/"
  
  CKEDITOR_CONFIGS = {
      'default': {
          'toolbar': 'full',
       },
  
      'special': {
          'toolbar': 'Special',
          'toolbar_Special': [
              ['Bold'], ['CodeSnippet', 'Youtube'],
          ],
          'extraPlugins': ','.join(['codesnippet', 'youtube']),
      }
  }
  </code></pre>
  
  <h1>File urls.py</h1>
  
  <pre><code>urlpatterns = [
      path('admin/', admin.site.urls),
      path('account/', include(('accounts.urls', 'accounts'), namespace='accounts')),
      path('blog/', include(('blog.urls', 'blog'), namespace='blog')),
      path('ckeditor/', include('ckeditor_uploader.urls')),
  ]
  if settings.DEBUG:
      import debug_toolbar
  
      debug_patterns = [
          re_path(r'^__debug__/', include(debug_toolbar.urls)),
      ]
      urlpatterns = debug_patterns + urlpatterns + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
  
  </code></pre>
  
  <h1>My_project</h1>
  
  <pre><code>├── blog                          &lt;= This my_app
  │   ├── view.py             
  │   ├── form.py
  │   ├── model.py
  ├── project                          &lt;= Project settings directory
  │   ├── __init__.py
  │   ├── settings.py          &lt;= settings 
  │   ├── urls.py
  │   └── wsgi.py 
  ├── static                         
  │   ├── ckeditor           
  │       ├── ckeditor_uploader
  │       ├── ckeditor        
  │           ├── plugins
  │               └── youtube   
  │                   └── youtube  
  │                        └── images
  │                        └── lang 
  │                        └── plugin.js
  │                        └── ....
  │                   └── ...  
  │                └── ...
  </code></pre>