[admin] Moved submit_line.html to openwisp-utils

README.rst

@@ -109,6 +109,7 @@ Add ``django_netjsonconfig``, ``django.contrib.admin``, ``sortedm2m`` and ``reve
 
     INSTALLED_APPS = [
         # other apps
+        'openwisp_utils.admin_theme',
         'django_netjsonconfig',
         # ensure the django admin comes after django-netjsonconfig
         'django.contrib.admin',

django_netjsonconfig/base/admin.py

@@ -50,16 +50,25 @@ class Media:
 
     def get_extra_context(self, pk=None):
         prefix = 'admin:{0}_{1}'.format(self.opts.app_label, self.model.__name__.lower())
+        text = _('Preview configuration')
         ctx = {
-            'submit_line': 'admin/django_netjsonconfig/submit_line.html',
-            'preview_url': reverse('{0}_preview'.format(prefix))
+            'additional_buttons': [
+                {
+                    'type': 'button',
+                    'url': reverse('{0}_preview'.format(prefix)),
+                    'class': 'previewlink',
+                    'value': text,
+                    'title': '{0} (ALT+P)'.format(text)
+                }
+            ]
         }
         if pk:
             ctx['download_url'] = reverse('{0}_download'.format(prefix), args=[pk])
         return ctx
 
     def add_view(self, request, form_url='', extra_context=None):
-        extra_context = self.get_extra_context()
+        extra_context = extra_context or {}
+        extra_context.update(self.get_extra_context())
         instance = self.model()
         if hasattr(instance, 'get_default_templates'):
             templates = instance.get_default_templates()

requirements.txt

@@ -7,4 +7,4 @@ django-sortedm2m>=1.4.0,<1.5
 django-reversion>=2.0.6,<2.1
 django-x509>=0.2.0,<0.3.0
 django-taggit>=0.22.1,<0.23.0
-openwisp-utils<0.2
+openwisp-utils>=0.1.2,<0.2

tests/settings.py

@@ -21,6 +21,7 @@
     'django.contrib.sessions',
     'django.contrib.messages',
     'django.contrib.staticfiles',
+    'openwisp_utils.admin_theme',
     'django_netjsonconfig',
     'django.contrib.admin',
     'sortedm2m',