Module ids are unique even across module types. Fix bugs where other fields were…

Module ids are unique even across module types. Fix bugs where other fields were being used for an id.

--HG--
branch : profiledev

courseware/content_parser.py

@@ -82,40 +82,47 @@ def id_tag(course):
         if elem.get('id'):
             pass
         elif elem.get(default_ids[elem.tag]):
-            new_id = elem.get(default_ids[elem.tag]) # Convert to alphanumeric
-            new_id = "".join([a for a in new_id if a.isalnum()])
+            new_id = elem.get(default_ids[elem.tag]) 
+            new_id = "".join([a for a in new_id if a.isalnum()]) # Convert to alphanumeric
+            # Without this, a conflict may occur between an hmtl or youtube id
+            new_id = default_ids[elem.tag] + new_id
             elem.set('id', new_id)
         else:
             elem.set('id', fasthash(etree.tostring(elem)))
             
-def due_tag(element, parent_due_date=None):
-    ''' This call is to pass down due dates. If an element has a due date,
-    all of the elements children will inherit this due date (unless the element
-    has a due date of its own). This is called recursively'''
-        
-    if (parent_due_date == None): #This is the entry call. Select all due elements
-        all_due_elements = element.xpath("//*[@due]")
-        for due_element in all_due_elements:
-            due_date = due_element.get('due')
-            for child_element in due_element:
-                due_tag(child_element, due_date)
+def propogate_downward_tag(element, attribute_name, parent_attribute = None):
+    ''' This call is to pass down an attribute to all children. If an element
+    has this attribute, it will be "inherited" by all of its children. If a
+    child (A) already has that attribute, A will keep the same attribute and
+    all of A's children will inherit A's attribute. This is a recursive call.'''
+    
+    if (parent_attribute == None): #This is the entry call. Select all due elements
+        all_attributed_elements = element.xpath("//*[@" + attribute_name +"]")
+        for attributed_element in all_attributed_elements:
+            attribute_value = attributed_element.get(attribute_name)
+            for child_element in attributed_element:
+                propogate_downward_tag(child_element, attribute_name, attribute_value)
     else:
-        #The hack below is because we would get _ContentOnlyELements from the
-        #iterator that can't have due dates set. We can't find API for it
-        if not element.get('due') and type(element) == etree._Element:
-            element.set('due', parent_due_date)
-            due_date = parent_due_date
-        else:
-            due_date = element.get('due')
+        '''The hack below is because we would get _ContentOnlyELements from the
+        iterator that can't have due dates set. We can't find API for it. If we
+        ever have an element which subclasses BaseElement, we will not tag it'''
+        if not element.get(attribute_name) and type(element) == etree._Element:
+            element.set(attribute_name, parent_attribute)
             
             for child_element in element:
-            due_tag(child_element, due_date)
+                propogate_downward_tag(child_element, attribute_name, parent_attribute)
+        else:
+            #This element would have already been found by Xpath, so we return
+            #for now and trust that this element will get its turn to propogate
+            #to its children later.
+            return
             
 def course_file(user):
     # TODO: Cache. 
     tree = etree.parse(settings.DATA_DIR+UserProfile.objects.get(user=user).courseware)
     id_tag(tree)
-    due_tag(tree)
+    propogate_downward_tag(tree, "due")
+    propogate_downward_tag(tree, "graded")
     return tree
 
 def module_xml(coursefile, module, id_tag, module_id):

courseware/models.py

@@ -50,7 +50,7 @@ class StudentModule(models.Model):
     module_id = models.CharField(max_length=255) # Filename for homeworks, etc. 
     student = models.ForeignKey(User)
     class Meta:
-        unique_together = (('student', 'module_id', 'module_type'),)
+        unique_together = (('student', 'module_id'),)
 
     ## Internal state of the object
     state = models.TextField(null=True, blank=True)

courseware/module_render.py

@@ -33,10 +33,14 @@ from django.conf import settings
 import courseware.content_parser as content_parser
 
 import sys
+import logging
 
 from lxml import etree
 import uuid
 
+
+log = logging.getLogger("mitx.courseware")
+
 ## TODO: Add registration mechanism
 modx_modules={'problem':courseware.modules.capa_module.LoncapaModule, 
               'video':courseware.modules.video_module.VideoModule,
@@ -64,11 +68,10 @@ def make_track_function(request):
 def modx_dispatch(request, module=None, dispatch=None, id=None):
     ''' Generic view for extensions. '''
     # Grab the student information for the module from the database
-    s = StudentModule.objects.filter(module_type=module, 
-                                     student=request.user, 
+    s = StudentModule.objects.filter(student=request.user, 
                                      module_id=id)
     if len(s) == 0:
-        print "ls404", module, request.user, id
+        log.debug("Couldnt find module for user and id " + str(module) + " " + str(request.user) + " "+ str(id))
         raise Http404
 
     s=s[0]

courseware/modules/capa_module.py

@@ -40,13 +40,13 @@ class LoncapaModule(XModule):
 
     def get_html(self):
         return render_to_string('problem_ajax.html', 
-                              {'id':self.filename, 
+                              {'id':self.item_id, 
                                'ajax_url':self.ajax_url,
                                })
 
     def get_init_js(self):
         return render_to_string('problem.js', 
-                              {'id':self.filename, 
+                              {'id':self.item_id, 
                                'ajax_url':self.ajax_url,
                                })
 
@@ -94,7 +94,7 @@ class LoncapaModule(XModule):
 
         html=render_to_string('problem.html', 
                               {'problem' : content, 
-                               'id' : self.filename, 
+                               'id' : self.item_id, 
                                'check_button' : check_button,
                                'reset_button' : reset_button,
                                'save_button' : save_button,

courseware/views.py

@@ -20,6 +20,7 @@ from lxml import etree
 from auth.models import UserProfile
 from models import StudentModule
 from module_render import * # TODO: Clean up
+from module_render import modx_dispatch
 import courseware.content_parser as content_parser
 
 log = logging.getLogger("mitx.courseware")
@@ -45,6 +46,11 @@ def profile(request):
     chapters = dom.xpath('//course[@name=$course]/chapter', course=course)
 
     responses=StudentModule.objects.filter(student=request.user)
+    response_by_id = {}
+    for response in responses:
+        response_by_id[response.module_id] = response
+        
+    print response_by_id
 
     for c in chapters:
         chname=c.get('name')
@@ -55,14 +61,15 @@ def profile(request):
             scores=[]
             if len(problems)>0:
                 for p in problems:
-                    id = p.get('filename')
+                    id = p.get('id')
                     correct = 0
-                    for response in responses:
-                        if response.module_id == id:
+                    if id in response_by_id:
+                        response = response_by_id[id]
                         if response.grade!=None:
                             correct=response.grade
                     else:
-                                correct=0
+                        print "Couldn't find id " + id
+                    
                     total=courseware.modules.capa_module.LoncapaModule(etree.tostring(p), "id").max_score() # TODO: Add state. Not useful now, but maybe someday problems will have randomized max scores? 
                     scores.append((int(correct),total))
                 score={'course':course,