def update_post_route(request, topic_id, post_id):
"""
Update an existing post. Must be one's own post.
For post:
- Only the body field may be changed.
For proposals:
- Only the name, body, and status fields can be changed.
- The status can only be changed to declined, and only when
the current status is pending or blocked.
For votes:
- The only fields that can be updated are body and response.
"""
db_conn = request['db_conn']
current_user = get_current_user(request)
if not current_user:
return abort(401)
# ## STEP 1) Find existing post instance ## #
post_ = get_post_facade(db_conn, post_id)
if not post_:
return abort(404)
if post_['user_id'] != current_user['id']:
return abort(403)
post_kind = post_['kind']
# ## STEP 2) Limit the scope of changes ## #
post_data = request['params']['post']
if post_kind is 'post':
post_data = pick(post_data, ('body',))
elif post_kind is 'proposal':
post_data = pick(post_data, ('name', 'body', 'status',))
if (post_data.get('status') != 'declined' or
post_data.get('status') not in ('pending', 'blocked',)):
del post_data['status']
elif post_kind is 'vote':
post_data = pick(post_data, ('body', 'response',))
# ## STEP 3) Validate and save post instance ## #
post_, errors = post_.update(db_conn, post_data)
if errors:
errors = prefix_error_names('post.', errors)
return 400, {
'errors': errors,
'ref': 'E4LFwRv2WEJZks7use7TCpww'
}
# ## STEP 4) Make updates based on proposal / vote status ## #
if post_kind == 'proposal':
update_entity_status(db_conn, post_)
if post_kind == 'vote':
proposal = Proposal.get(db_conn, id=post_['replies_to_id'])
update_entity_status(db_conn, proposal)
# ## STEP 5) Return response ## #
return 200, {'post': post_.deliver()}
def test_get_post_facade(db_conn, posts_table):
"""
Expect to get a post, and the instance to match the kind.
"""
posts_table.insert(
{"id": "fghj4567", "user_id": "abcd1234", "topic_id": "wxyz7890", "body": "abcd", "kind": "post"}
).run(db_conn)
assert isinstance(discuss.get_post_facade("fghj4567"), Post)
def test_get_post_facade(db_conn, posts_table):
"""
Expect to get a post, and the instance to match the kind.
"""
posts_table.insert({
'id': 'fghj4567',
'user_id': 'abcd1234',
'topic_id': 'wxyz7890',
'body': 'abcd',
'kind': 'post',
}).run(db_conn)
assert isinstance(discuss.get_post_facade(db_conn, 'fghj4567'), Post)
def update_post_route(request, topic_id, post_id):
"""
Update an existing post. Must be one's own post.
For post:
- Only the body field may be changed.
For proposals:
- Only the name, body, and status fields can be changed.
- The status can only be changed to declined, and only when
the current status is pending or blocked.
For votes:
- The only fields that can be updated are body and response.
"""
db_conn = request['db_conn']
current_user = get_current_user(request)
if not current_user:
return abort(401)
# ## STEP 1) Find existing post instance ## #
post_ = get_post_facade(db_conn, post_id)
if not post_:
return abort(404)
if post_['user_id'] != current_user['id']:
return abort(403)
post_kind = post_['kind']
# ## STEP 2) Limit the scope of changes ## #
post_data = request['params']['post']
if post_kind is 'post':
post_data = pick(post_data, ('body', ))
elif post_kind is 'proposal':
post_data = pick(post_data, (
'name',
'body',
'status',
))
if (post_data.get('status') != 'declined'
or post_data.get('status') not in (
'pending',
'blocked',
)):
del post_data['status']
elif post_kind is 'vote':
post_data = pick(post_data, (
'body',
'response',
))
# ## STEP 3) Validate and save post instance ## #
post_, errors = post_.update(db_conn, post_data)
if errors:
errors = prefix_error_names('post.', errors)
return 400, {'errors': errors, 'ref': 'E4LFwRv2WEJZks7use7TCpww'}
# ## STEP 4) Make updates based on proposal / vote status ## #
if post_kind == 'proposal':
update_entity_status(db_conn, post_)
if post_kind == 'vote':
proposal = Proposal.get(db_conn, id=post_['replies_to_id'])
update_entity_status(db_conn, proposal)
# ## STEP 5) Return response ## #
return 200, {'post': post_.deliver()}
