Commit 188e1c68 by Vik Paruchuri

add self assessment module

parent 5223e9d3
mitx
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......@@ -28,6 +28,7 @@ setup(
"problem = xmodule.capa_module:CapaDescriptor",
"problemset = xmodule.seq_module:SequenceDescriptor",
"section = xmodule.backcompat_module:SemanticSectionDescriptor",
"selfassessment = xmodule.self_assessment_module:SelfAssessmentModule"
"sequential = xmodule.seq_module:SequenceDescriptor",
"slides = xmodule.backcompat_module:TranslateCustomTagDescriptor",
"vertical = xmodule.vertical_module:VerticalDescriptor",
......
import copy
from fs.errors import ResourceNotFoundError
import logging
import os
import sys
from lxml import etree
from lxml.html import rewrite_links
from path import path
from .x_module import XModule
from pkg_resources import resource_string
from .xml_module import XmlDescriptor, name_to_pathname
from .editing_module import EditingDescriptor
from .stringify import stringify_children
from .html_checker import check_html
from xmodule.modulestore import Location
from xmodule.contentstore.content import XASSET_SRCREF_PREFIX, StaticContent
log = logging.getLogger("mitx.courseware")
class SelfAssessmentModule(XModule):
js = {'coffee': [resource_string(__name__, 'js/src/javascript_loader.coffee'),
resource_string(__name__, 'js/src/collapsible.coffee'),
resource_string(__name__, 'js/src/html/display.coffee')
]
}
js_module_name = "SelfAssessmentModule"
def get_html(self):
# cdodge: perform link substitutions for any references to course static content (e.g. images)
return rewrite_links(self.html, self.rewrite_content_links)
def __init__(self, system, location, definition, descriptor,
instance_state=None, shared_state=None, **kwargs):
XModule.__init__(self, system, location, definition, descriptor,
instance_state, shared_state, **kwargs)
self.html = self.definition['data']
class SelfAssessmentDescriptor(XmlDescriptor, EditingDescriptor):
"""
Module for putting raw html in a course
"""
mako_template = "widgets/html-edit.html"
module_class = HtmlModule
filename_extension = "xml"
template_dir_name = "selfassessment"
js = {'coffee': [resource_string(__name__, 'js/src/html/edit.coffee')]}
js_module_name = "HTMLEditingDescriptor"
# VS[compat] TODO (cpennington): Delete this method once all fall 2012 course
# are being edited in the cms
@classmethod
def backcompat_paths(cls, path):
if path.endswith('.html.xml'):
path = path[:-9] + '.html' # backcompat--look for html instead of xml
if path.endswith('.html.html'):
path = path[:-5] # some people like to include .html in filenames..
candidates = []
while os.sep in path:
candidates.append(path)
_, _, path = path.partition(os.sep)
# also look for .html versions instead of .xml
nc = []
for candidate in candidates:
if candidate.endswith('.xml'):
nc.append(candidate[:-4] + '.html')
return candidates + nc
# NOTE: html descriptors are special. We do not want to parse and
# export them ourselves, because that can break things (e.g. lxml
# adds body tags when it exports, but they should just be html
# snippets that will be included in the middle of pages.
@classmethod
def load_definition(cls, xml_object, system, location):
'''Load a descriptor from the specified xml_object:
If there is a filename attribute, load it as a string, and
log a warning if it is not parseable by etree.HTMLParser.
If there is not a filename attribute, the definition is the body
of the xml_object, without the root tag (do not want <html> in the
middle of a page)
'''
filename = xml_object.get('filename')
if filename is None:
definition_xml = copy.deepcopy(xml_object)
cls.clean_metadata_from_xml(definition_xml)
return {'data': stringify_children(definition_xml)}
else:
# html is special. cls.filename_extension is 'xml', but
# if 'filename' is in the definition, that means to load
# from .html
# 'filename' in html pointers is a relative path
# (not same as 'html/blah.html' when the pointer is in a directory itself)
pointer_path = "{category}/{url_path}".format(category='html',
url_path=name_to_pathname(location.name))
base = path(pointer_path).dirname()
#log.debug("base = {0}, base.dirname={1}, filename={2}".format(base, base.dirname(), filename))
filepath = "{base}/{name}.html".format(base=base, name=filename)
#log.debug("looking for html file for {0} at {1}".format(location, filepath))
# VS[compat]
# TODO (cpennington): If the file doesn't exist at the right path,
# give the class a chance to fix it up. The file will be written out
# again in the correct format. This should go away once the CMS is
# online and has imported all current (fall 2012) courses from xml
if not system.resources_fs.exists(filepath):
candidates = cls.backcompat_paths(filepath)
#log.debug("candidates = {0}".format(candidates))
for candidate in candidates:
if system.resources_fs.exists(candidate):
filepath = candidate
break
try:
with system.resources_fs.open(filepath) as file:
html = file.read()
# Log a warning if we can't parse the file, but don't error
if not check_html(html):
msg = "Couldn't parse html in {0}.".format(filepath)
log.warning(msg)
system.error_tracker("Warning: " + msg)
definition = {'data': html}
# TODO (ichuang): remove this after migration
# for Fall 2012 LMS migration: keep filename (and unmangled filename)
definition['filename'] = [ filepath, filename ]
return definition
except (ResourceNotFoundError) as err:
msg = 'Unable to load file contents at path {0}: {1} '.format(
filepath, err)
# add more info and re-raise
raise Exception(msg), None, sys.exc_info()[2]
# TODO (vshnayder): make export put things in the right places.
def definition_to_xml(self, resource_fs):
'''If the contents are valid xml, write them to filename.xml. Otherwise,
write just <html filename="" [meta-attrs="..."]> to filename.xml, and the html
string to filename.html.
'''
try:
return etree.fromstring(self.definition['data'])
except etree.XMLSyntaxError:
pass
# Not proper format. Write html to file, return an empty tag
pathname = name_to_pathname(self.url_name)
pathdir = path(pathname).dirname()
filepath = u'{category}/{pathname}.html'.format(category=self.category,
pathname=pathname)
resource_fs.makedir(os.path.dirname(filepath), allow_recreate=True)
with resource_fs.open(filepath, 'w') as file:
file.write(self.definition['data'])
# write out the relative name
relname = path(pathname).basename()
elt = etree.Element('html')
elt.set("filename", relname)
return elt
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