make "edit" links work - fixes giturl (was broken by xblocks migration)

Conflicts:

	lms/templates/staff_problem_info.html
	lms/xmodule_namespace.py

common/djangoapps/xmodule_modifiers.py

@@ -108,6 +108,22 @@ def add_histogram(get_html, module, user):
         histogram = grade_histogram(module_id)
         render_histogram = len(histogram) > 0
 
+        if settings.MITX_FEATURES.get('ENABLE_LMS_MIGRATION'):
+            [filepath, filename] = module.descriptor.xml_attributes.get('filename', ['', None])
+            osfs = module.system.filestore
+            if filename is not None and osfs.exists(filename):
+                # if original, unmangled filename exists then use it (github
+                # doesn't like symlinks)
+                filepath = filename
+            data_dir = osfs.root_path.rsplit('/')[-1]
+            giturl = getattr(module.lms, 'giturl', 'https://github.com/MITx')
+            edit_link = "%s/%s/tree/master/%s" % (giturl, data_dir, filepath)
+        else:
+            edit_link = False
+            # Need to define all the variables that are about to be used
+            giturl = ""
+            data_dir = ""
+
         source_file = module.lms.source_file  # source used to generate the problem XML, eg latex or word
 
         # useful to indicate to staff if problem has been released or not
@@ -121,12 +137,15 @@ def add_histogram(get_html, module, user):
 
         staff_context = {'fields': [(field.name, getattr(module, field.name)) for field in module.fields],
                          'lms_fields': [(field.name, getattr(module.lms, field.name)) for field in module.lms.fields],
+                         'xml_attributes' : module.descriptor.xml_attributes,
                          'location': module.location,
                          'xqa_key': module.lms.xqa_key,
                          'source_file': source_file,
+                         'source_url': '%s/%s/tree/master/%s' % (giturl, data_dir, source_file),
                          'category': str(module.__class__.__name__),
                          # Template uses element_id in js function names, so can't allow dashes
                          'element_id': module.location.html_id().replace('-', '_'),
+                         'edit_link': edit_link,
                          'user': user,
                          'xqa_server': settings.MITX_FEATURES.get('USE_XQA_SERVER', 'http://xqa:server@content-qa.mitx.mit.edu/xqa'),
                          'histogram': json.dumps(histogram),

common/lib/xmodule/xmodule/modulestore/inheritance.py

@@ -8,7 +8,8 @@ INHERITABLE_METADATA = (
     # How many days early to show a course element to beta testers (float)
     # intended to be set per-course, but can be overridden in for specific
     # elements.  Can be a float.
-    'days_early_for_beta'
+    'days_early_for_beta',
+    'giturl'	# for git edit link
 )
 
 def compute_inherited_metadata(descriptor):

common/lib/xmodule/xmodule/xml_module.py

@@ -102,6 +102,7 @@ class XmlDescriptor(XModuleDescriptor):
         'start', 'due', 'graded', 'display_name', 'url_name', 'hide_from_toc',
         'ispublic', 	# if True, then course is listed for all users; see
         'xqa_key',  	# for xqaa server access
+        'giturl',	# url of git server for origin of file
         # information about testcenter exams is a dict (of dicts), not a string,
         # so it cannot be easily exportable as a course element's attribute.
         'testcenter_info',
@@ -222,6 +223,7 @@ class XmlDescriptor(XModuleDescriptor):
         definition, children = cls.definition_from_xml(definition_xml, system)
         if definition_metadata:
             definition['definition_metadata'] = definition_metadata
+        definition['filename'] = [ filepath, filename ]     
 
         return definition, children
 
@@ -315,6 +317,7 @@ class XmlDescriptor(XModuleDescriptor):
         model_data['children'] = children
 
         model_data['xml_attributes'] = {}
+        model_data['xml_attributes']['filename'] = definition.get('filename', ['', None]) # for git link
         for key, value in metadata.items():
             if key not in set(f.name for f in cls.fields + cls.lms.fields):
                 model_data['xml_attributes'][key] = value