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edx-platform
Commit 091d6aeb by Nimisha Asthagiri
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Mobile API: Modularize VideoOutline code

parent 40dd4f1f
Showing with 78 additions and 112 deletions
lms/djangoapps/mobile_api/video_outlines/serializers.py
......@@ -30,108 +30,17 @@ class BlockOutline(object):
self.local_cache['course_videos'] = {}
def __iter__(self):
child_to_parent = {}
stack = [self.start_block]
# path should be optional
def path(block):
"""path for block"""
block_path = []
while block in child_to_parent:
block = child_to_parent[block]
if block is not self.start_block:
block_path.append({
# to be consistent with other edx-platform clients, return the defaulted display name
'name': block.display_name_with_default,
'category': block.category,
'id': unicode(block.location)
})
return reversed(block_path)
def find_urls(block):
def parent_or_requested_block_type(usage_key):
"""
Find the section and unit urls for a block.
Returns:
unit_url, section_url:
unit_url (str): The url of a unit
section_url (str): The url of a section
Returns whether the usage_key's block_type is one of self.block_types or a parent type.
"""
block_path = []
while block in child_to_parent:
block = child_to_parent[block]
block_path.append(block)
block_list = list(reversed(block_path))
block_count = len(block_list)
chapter_id = block_list[1].location.block_id if block_count > 1 else None
section = block_list[2] if block_count > 2 else None
position = None
#position is found traversing the section block
if block_count > 3:
position = 1
for block in section.children:
if block.name == block_list[3].url_name:
break
position += 1
if chapter_id is None:
no_chapter_url = reverse(
"courseware",
kwargs=dict(
course_id=unicode(self.course_id),
),
request=self.request
)
return no_chapter_url, no_chapter_url
elif section is None:
no_section_url = reverse(
"courseware_chapter",
kwargs=dict(
course_id=unicode(self.course_id),
chapter=chapter_id
),
request=self.request
)
return no_section_url, no_section_url
elif position is None:
no_position_url = reverse(
"courseware_section",
kwargs=dict(
course_id=unicode(self.course_id),
chapter=chapter_id,
section=section.url_name
),
request=self.request
)
return no_position_url, no_position_url
else:
section_url = reverse(
"courseware_section",
kwargs=dict(
course_id=unicode(self.course_id),
chapter=chapter_id,
section=section.url_name
),
request=self.request
)
unit_url = reverse(
"courseware_position",
kwargs=dict(
course_id=unicode(self.course_id),
chapter=chapter_id,
section=section.url_name,
position=position
),
request=self.request
)
return unit_url, section_url
user = self.request.user
return (
usage_key.block_type in self.block_types or
usage_key.block_type in BLOCK_TYPES_WITH_CHILDREN
)
child_to_parent = {}
stack = [self.start_block]
while stack:
curr_block = stack.pop()
......@@ -145,12 +54,12 @@ class BlockOutline(object):
continue
if curr_block.location.block_type in self.block_types:
if not has_access(user, 'load', curr_block, course_key=self.course_id):
if not has_access(self.request.user, 'load', curr_block, course_key=self.course_id):
continue
summary_fn = self.block_types[curr_block.category]
block_path = list(path(curr_block))
unit_url, section_url = find_urls(curr_block)
block_path = list(path(curr_block, child_to_parent, self.start_block))
unit_url, section_url = find_urls(self.course_id, curr_block, child_to_parent, self.request)
yield {
"path": block_path,
......@@ -160,21 +69,78 @@ class BlockOutline(object):
"summary": summary_fn(self.course_id, curr_block, self.request, self.local_cache)
}
def parent_or_requested_block_type(usage_key):
"""
Returns whether the usage_key's block_type is one of self.block_types or a parent type.
"""
return (
usage_key.block_type in self.block_types or
usage_key.block_type in BLOCK_TYPES_WITH_CHILDREN
)
if curr_block.has_children:
for block in reversed(curr_block.get_children(usage_key_filter=parent_or_requested_block_type)):
children = curr_block.get_children(usage_key_filter=parent_or_requested_block_type)
for block in reversed(children):
stack.append(block)
child_to_parent[block] = curr_block
def path(block, child_to_parent, start_block):
"""path for block"""
block_path = []
while block in child_to_parent:
block = child_to_parent[block]
if block is not start_block:
block_path.append({
# to be consistent with other edx-platform clients, return the defaulted display name
'name': block.display_name_with_default,
'category': block.category,
'id': unicode(block.location)
})
return reversed(block_path)
def find_urls(course_id, block, child_to_parent, request):
"""
Find the section and unit urls for a block.
Returns:
unit_url, section_url:
unit_url (str): The url of a unit
section_url (str): The url of a section
"""
block_path = []
while block in child_to_parent:
block = child_to_parent[block]
block_path.append(block)
block_list = list(reversed(block_path))
block_count = len(block_list)
chapter_id = block_list[1].location.block_id if block_count > 1 else None
section = block_list[2] if block_count > 2 else None
position = None
if block_count > 3:
position = 1
for block in section.children:
if block.name == block_list[3].url_name:
break
position += 1
kwargs = {'course_id': unicode(course_id)}
if chapter_id is None:
no_chapter_url = reverse("courseware", kwargs=kwargs, request=request)
return no_chapter_url, no_chapter_url
kwargs['chapter'] = chapter_id
if section is None:
no_section_url = reverse("courseware_chapter", kwargs=kwargs, request=request)
return no_section_url, no_section_url
kwargs['section'] = section.url_name
if position is None:
no_position_url = reverse("courseware_section", kwargs=kwargs, request=request)
return no_position_url, no_position_url
section_url = reverse("courseware_section", kwargs=kwargs, request=request)
kwargs['position'] = position
unit_url = reverse("courseware_position", kwargs=kwargs, request=request)
return unit_url, section_url
def video_summary(course, course_id, video_descriptor, request, local_cache):
"""
returns summary dict for the given video module
......
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