Add useful error page when forbidden from private subreddit.

r2/r2/controllers/reddit_base.py

@@ -878,6 +878,9 @@ class RedditController(MinimalController):
 
             # check if the user has access to this subreddit
             if not c.site.can_view(c.user) and not c.error_page:
+                errpage = pages.RedditError(strings.private_subreddit_title,
+                                            strings.private_subreddit_message)
+                request.environ['usable_error_content'] = errpage.render()
                 self.abort403()
 
             #check over 18

r2/r2/lib/strings.py

@@ -130,6 +130,8 @@ string_dict = dict(
     link_info_title = _("%(title)s : %(site)s"),
     banned_subreddit_title = _("this subreddit has been banned"),
     banned_subreddit_message = _("most likely this was done automatically by our spam filtering program. the program is still learning, and may even have some bugs, so if you feel the ban was a mistake, please submit a link to our [request a subreddit listing](%(link)s) and be sure to include the **exact name of the subreddit**."),
+    private_subreddit_title = _("this subreddit is private"),
+    private_subreddit_message = _("the moderators of this subreddit have set it to private. you must be a moderator or approved submitter to view its contents."),
     comments_panel_text = _("""The following is a sample of what Reddit users had to say about this page. The full discussion is available [here](%(fd_link)s); you can also get there by clicking the link's title (in the middle of the toolbar, to the right of the comments button)."""),
 
     submit_link = _("""You are submitting a link. The key to a successful submission is interesting content and a descriptive title."""),