Add ISBN data downloader

media/admin.py

@@ -8,6 +8,7 @@ from django.utils.translation import ugettext_lazy as _
 from reversion.admin import VersionAdmin
 
 from med.admin import admin_site
+from .forms import MediaAdminForm
 from .models import Auteur, Emprunt, Jeu, Media
 
 
@@ -17,16 +18,43 @@ class AuteurAdmin(VersionAdmin):
 
 
 class MediaAdmin(VersionAdmin):
-    list_display = ('title', 'authors_list', 'side_title', 'isbn')
+    list_display = ('title', 'authors_list', 'side_title', 'isbn',
+                    'external_link')
     search_fields = ('title', 'authors__nom', 'side_title', 'subtitle', 'isbn')
     autocomplete_fields = ('authors',)
     date_hierarchy = 'publish_date'
+    form = MediaAdminForm
 
     def authors_list(self, obj):
         return ", ".join([a.nom for a in obj.authors.all()])
 
     authors_list.short_description = _('authors')
 
+    def external_link(self, obj):
+        return format_html('<a href="{}" target="about:blank">{}</a>',
+                           obj.external_url, obj.external_url)
+
+    external_link.allow_tags = True
+    external_link.short_description = _('external url')
+
+    def get_form(self, request, obj=None, **kwargs):
+        """
+        Pass request to form (for ISBN magic)
+        """
+        form = super().get_form(request, obj=obj, **kwargs)
+        form.request = request
+        return form
+
+    def changeform_view(self, request, object_id=None, form_url='',
+                        extra_context=None):
+        """
+        We use _continue for ISBN fetching, so remove continue button
+        """
+        extra_context = extra_context or {}
+        extra_context['show_save_and_continue'] = False
+        return super().changeform_view(request, object_id, form_url,
+                                       extra_context=extra_context)
+
 
 class EmpruntAdmin(VersionAdmin):
     list_display = ('media', 'user', 'date_emprunt', 'date_rendu',