103 lines
3.9 KiB
Python
103 lines
3.9 KiB
Python
import json
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from django.conf import settings
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from functools import wraps
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from static_replace import replace_urls
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from mitxmako.shortcuts import render_to_string
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def wrap_xmodule(get_html, module, template):
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"""
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Wraps the results of get_html in a standard <section> with identifying
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data so that the appropriate javascript module can be loaded onto it.
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get_html: An XModule.get_html method or an XModuleDescriptor.get_html method
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module: An XModule
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template: A template that takes the variables:
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content: the results of get_html,
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class_: the module class name
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module_name: the js_module_name of the module
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"""
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@wraps(get_html)
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def _get_html():
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return render_to_string(template, {
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'content': get_html(),
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'class_': module.__class__.__name__,
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'module_name': module.js_module_name
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})
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return _get_html
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def replace_static_urls(get_html, prefix):
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"""
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Updates the supplied module with a new get_html function that wraps
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the old get_html function and substitutes urls of the form /static/...
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with urls that are /static/<prefix>/...
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"""
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@wraps(get_html)
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def _get_html():
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return replace_urls(get_html(), staticfiles_prefix=prefix)
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return _get_html
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def grade_histogram(module_id):
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''' Print out a histogram of grades on a given problem.
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Part of staff member debug info.
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'''
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from django.db import connection
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cursor = connection.cursor()
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q = """SELECT courseware_studentmodule.grade,
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COUNT(courseware_studentmodule.student_id)
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FROM courseware_studentmodule
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WHERE courseware_studentmodule.module_id=%s
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GROUP BY courseware_studentmodule.grade"""
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# Passing module_id this way prevents sql-injection.
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cursor.execute(q, [module_id])
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grades = list(cursor.fetchall())
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grades.sort(key=lambda x: x[0]) # Add ORDER BY to sql query?
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if len(grades) == 1 and grades[0][0] is None:
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return []
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return grades
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def add_histogram(get_html, module):
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"""
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Updates the supplied module with a new get_html function that wraps
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the output of the old get_html function with additional information
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for admin users only, including a histogram of student answers and the
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definition of the xmodule
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"""
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@wraps(get_html)
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def _get_html():
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module_id = module.id
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histogram = grade_histogram(module_id)
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render_histogram = len(histogram) > 0
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# TODO: fixme - no filename in module.xml in general (this code block for edx4edx)
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# the following if block is for summer 2012 edX course development; it will change when the CMS comes online
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if settings.MITX_FEATURES.get('DISPLAY_EDIT_LINK') and settings.DEBUG and module_xml.get('filename') is not None:
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coursename = multicourse_settings.get_coursename_from_request(request)
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github_url = multicourse_settings.get_course_github_url(coursename)
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fn = module_xml.get('filename')
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if module_xml.tag=='problem': fn = 'problems/' + fn # grrr
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edit_link = (github_url + '/tree/master/' + fn) if github_url is not None else None
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if module_xml.tag=='problem': edit_link += '.xml' # grrr
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else:
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edit_link = False
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# Cast module.definition and module.metadata to dicts so that json can dump them
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# even though they are lazily loaded
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staff_context = {'definition': json.dumps(dict(module.definition), indent=4),
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'metadata': json.dumps(dict(module.metadata), indent=4),
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'element_id': module.location.html_id(),
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'edit_link': edit_link,
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'histogram': json.dumps(histogram),
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'render_histogram': render_histogram,
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'module_content': get_html()}
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return render_to_string("staff_problem_info.html", staff_context)
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return _get_html
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