Store published date in module metadata, and display it on draft pages

cms/djangoapps/contentstore/utils.py

@@ -35,13 +35,13 @@ def get_course_location_for_item(location):
     return location
 
 
-def get_lms_link_for_item(item):
+def get_lms_link_for_item(location):
     if settings.LMS_BASE is not None:
         lms_link = "{lms_base}/courses/{course_id}/jump_to/{location}".format(
             lms_base=settings.LMS_BASE,
             # TODO: These will need to be changed to point to the particular instance of this problem in the particular course
-            course_id = modulestore().get_containing_courses(item.location)[0].id,
-            location=item.location,
+            course_id = modulestore().get_containing_courses(location)[0].id,
+            location=location,
         )
     else:
         lms_link = None

cms/djangoapps/contentstore/views.py

 from util.json_request import expect_json
+import exceptions
 import json
-import os
 import logging
-import sys
 import mimetypes
+import os
 import StringIO
-import exceptions
+import sys
+import time
 from collections import defaultdict
 from uuid import uuid4
 
@@ -154,7 +155,7 @@ def edit_subsection(request, location):
 
     item = modulestore().get_item(location)
 
-    lms_link = get_lms_link_for_item(item)
+    lms_link = get_lms_link_for_item(location)
 
     # make sure that location references a 'sequential', otherwise return BadRequest
     if item.location.category != 'sequential':
@@ -183,7 +184,8 @@ def edit_unit(request, location):
 
     item = modulestore().get_item(location)
 
-    lms_link = get_lms_link_for_item(item)
+    # The non-draft location
+    lms_link = get_lms_link_for_item(item.location._replace(revision=None))
 
     component_templates = defaultdict(list)
 
@@ -212,16 +214,24 @@ def edit_unit(request, location):
 
     unit_state = compute_unit_state(item)
 
+    try:
+        published_date = time.strftime('%B %d, %Y', item.metadata.get('published_date'))
+    except TypeError:
+        published_date = None
+
     return render_to_response('unit.html', {
         'unit': item,
+        'unit_location': published_location,
         'components': components,
         'component_templates': component_templates,
-        'lms_link': lms_link,
+        'draft_preview_link': lms_link,
+        'published_preview_link': lms_link,
         'subsection': containing_subsection,
         'section': containing_section,
         'create_new_unit_template': Location('i4x', 'edx', 'templates', 'vertical', 'Empty'),
         'unit_state': unit_state,
         'release_date': None,
+        'published_date': published_date,
     })
 
 

cms/static/sass/_unit.scss

@@ -87,7 +87,7 @@
         }
       }
 
-      .rendered-component {
+      .xmodule_display {
         padding: 40px 20px 20px;
       }
 
@@ -410,7 +410,8 @@
   #delete-draft,
   #publish-draft,
   .component-actions,
-  .new-component-item {
+  .new-component-item,
+  #published-alert {
     display: none;
   }
 
@@ -423,6 +424,7 @@
   #save-draft,
   #delete-draft,
   #publish-draft,
+  #published-alert,
   #create-draft, {
     display: none;
   }

cms/templates/unit.html

@@ -8,14 +8,22 @@
     new CMS.Views.UnitEdit({
       el: $('.main-wrapper'),
       model: new CMS.Models.Module({
-        id: '${unit.location.url()}'
+        id: '${unit_location}'
       })
     });
   </script>
 </%block>
 <%block name="content">
-  <div class="main-wrapper edit-state-${unit_state}" data-id="${unit.location.url()}">
+  <div class="main-wrapper edit-state-${unit_state}" data-id="${unit_location}">
     <div class="inner-wrapper">
+      <div class="alert" id="published-alert">
+        <p class="alert-message"><strong>You are editing a draft.</strong>
+        % if published_date:
+        This unit was originally published on ${published_date}.
+        % endif
+        </p>
+        <a href="${published_preview_link}" target="_blank" class="alert-action secondary">Preview the published version</a>
+      </div>
       <div class="main-column">
         <article class="unit-body window">
           <p class="unit-name-input"><label>Display Name:</label><input type="text" value="${unit.display_name}" class="unit-display-name-input" /></p>
@@ -60,7 +68,7 @@
         </article>
       </div>
 
-      <div class="sidebar wip-box">
+      <div class="sidebar">
         <div class="unit-properties window">
           <h4>Unit Properties</h4>
           <div class="window-contents">
@@ -79,7 +87,7 @@
             <div class="row unit-actions">
               <a id="save-draft" href="#" class="save-button">Save Draft</a>
               <a id="delete-draft" href="#" class="save-button">Delete Draft</a>
-              <a href="${lms_link}" target="_blank" class="preview-button">Preview</a>
+              <a href="${draft_preview_link}" target="_blank" class="preview-button">Preview</a>
             </div>
           </div>
         </div>

common/lib/xmodule/xmodule/modulestore/draft.py

+from datetime import datetime
 
 from . import ModuleStoreBase, Location
 from .exceptions import ItemNotFoundError
@@ -141,7 +142,10 @@ class DraftModuleStore(ModuleStoreBase):
         Save a current draft to the underlying modulestore
         """
         draft = self.get_item(location)
+        metadata = {}
+        metadata.update(draft.metadata)
+        metadata['published_date'] = tuple(datetime.utcnow().timetuple())
         super(DraftModuleStore, self).update_item(location, draft.definition.get('data', {}))
         super(DraftModuleStore, self).update_children(location, draft.definition.get('children', []))
-        super(DraftModuleStore, self).update_metadata(location, draft.metadata)
+        super(DraftModuleStore, self).update_metadata(location, metadata)
         self.delete_item(location)