admin: changed message display in change page

No needs for filter links, it's only useful on the listing page.

django_journal/admin.py

@@ -22,8 +22,8 @@ class StringDataInlineAdmin(admin.TabularInline):
 class JournalAdmin(admin.ModelAdmin):
     list_display = ('time', 'tag', 'html_message')
     list_filter = ('tag',)
-    fields = list_display
-    readonly_fields = list_display
+    fields = ('time', 'tag', 'html_message_no_filter')
+    readonly_fields = fields
     inlines = (
             ObjectDataInlineAdmin, 
             StringDataInlineAdmin,
@@ -57,6 +57,16 @@ class JournalAdmin(admin.ModelAdmin):
         #    return ''
         return '<a href="%s" class="external-link"></a>' % url
 
+    def html_message_no_filter(self, entry):
+        ctx = entry.message_context()
+        for obj_data in entry.objectdata_set.all():
+            key = obj_data.tag.name;
+            ctx[key] = ctx[key] + self.object_link(obj_data)
+        template = _(entry.template.content) # localize the template
+        return '<span>{}</span>'.format(template.format(**ctx))
+    html_message_no_filter.allow_tags = True
+    html_message_no_filter.short_description = _('Message')
+
     def html_message(self, entry):
         ctx = entry.message_context()
         for obj_data in entry.objectdata_set.select_related():