Added views for automatic course article creation.

lms/djangoapps/course_wiki/views.py

+from django.shortcuts import redirect
+
+from wiki.core.exceptions import NoRootURL
+from wiki.models import URLPath, Article
+
+from courseware.courses import check_course
+
+def root_create(request):
+    
+    """
+    In the edX wiki, we don't show the root_create view. Instead, we
+    just create the root automatically if it doesn't exist.
+    """
+    root = get_or_create_root()
+    return redirect('wiki:get', path=root.path)
+
+
+def course_wiki_redirect(request, course_id):
+    """
+    This redirects to whatever page on the wiki that the course designates
+    as it's home page. A course's wiki must be an article on the root (for
+    example, "/6.002x") to keep things simple.
+    """
+    course = check_course(course_id)
+    
+    namespace = course.wiki_namespace
+    #TODO: Make sure this is a legal slug. No "/"'s
+                
+    try:
+        urlpath = URLPath.get_by_path(namespace, select_related=True)
+        
+        results = list( Article.objects.filter( id = urlpath.article.id ) )
+        if results:
+            article = results[0]
+        else:
+            article = None
+    
+    except (NoRootURL, URLPath.DoesNotExist):
+        # We will create it in the next block
+        urlpath = None
+        article = None
+        
+    if not article:
+        # create it
+        root = get_or_create_root()
+        
+        if urlpath:
+            # Somehow we got a urlpath without an article. Just delete it and
+            # recerate it.
+            urlpath.delete()
+        
+        urlpath = URLPath.create_article(
+            root,
+            namespace,
+            title=course.title,
+            content="This is the wiki for " + course.title + ".",
+            user_message="Course page automatically created.",
+            user=None,
+            ip_address=None,
+            article_kwargs={'owner': None,
+                            'group': None,
+                            'group_read': True,
+                            'group_write': True,
+                            'other_read': True,
+                            'other_write': True,
+                            })
+        
+    return redirect("wiki:get", path=urlpath.path)
+    
+
+def get_or_create_root():
+    """
+    Returns the root article, or creates it if it doesn't exist.
+    """
+    try:
+        root = URLPath.root()
+        if not root.article:
+            root.delete()
+            raise NoRootURL
+        return root
+    except NoRootURL:
+        pass
+    
+    starting_content = "\n".join((
+    "Welcome to the edX Wiki",
+    "===",
+    "Visit a course wiki to add an article."))
+    
+    root = URLPath.create_root(title="edX Wiki",
+                        content=starting_content)
+    return root
+    

lms/envs/common.py

@@ -530,6 +530,7 @@ INSTALLED_APPS = (
     
     #For the wiki
     'wiki', # The new django-wiki from benjaoming
+    'course_wiki', # Our customizations
     'django_notify',
     'mptt',
     'sekizai',

lms/urls.py

@@ -151,8 +151,12 @@ if settings.WIKI_ENABLED:
     #     url(r'^courses/(?P<course_id>[^/]+/[^/]+/[^/]+)/wiki/', include('simplewiki.urls')),
     # )
     urlpatterns += (        
+        # First we include views from course_wiki that we use to override the default views.
+        # They come first in the urlpatterns so they get resolved first
+        url('^wiki/create-root/$', 'course_wiki.views.root_create', name='root_create'), 
+        url(r'^courses/(?P<course_id>[^/]+/[^/]+/[^/]+)/wiki$',
+            'course_wiki.views.course_wiki_redirect', name="course_wiki"),
         
-        #url(r'^courses/(?P<course_id>[^/]+/[^/]+/[^/]+)/wiki/', include('simplewiki.urls')),
         
         url(r'wiki/', include(wiki_pattern())),
         url(r'^notify/', include(notify_pattern())),