49 lines
1.4 KiB
Python
49 lines
1.4 KiB
Python
from xmodule.x_module import XModule
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from xmodule.raw_module import RawDescriptor
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from lxml import etree
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from mako.template import Template
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class CustomTagModule(XModule):
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"""
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This module supports tags of the form
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<customtag option="val" option2="val2">
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<impl>$tagname</impl>
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</customtag>
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In this case, $tagname should refer to a file in data/custom_tags, which contains
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a mako template that uses ${option} and ${option2} for the content.
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For instance:
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data/custom_tags/book::
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More information given in <a href="/book/${page}">the text</a>
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course.xml::
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...
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<customtag page="234" impl="book"/>
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...
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Renders to::
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More information given in <a href="/book/234">the text</a>
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"""
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def __init__(self, system, location, definition,
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instance_state=None, shared_state=None, **kwargs):
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XModule.__init__(self, system, location, definition,
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instance_state, shared_state, **kwargs)
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xmltree = etree.fromstring(self.definition['data'])
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template_name = xmltree.attrib['impl']
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params = dict(xmltree.items())
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with self.system.filestore.open(
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'custom_tags/{name}'.format(name=template_name)) as template:
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self.html = Template(template.read()).render(**params)
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def get_html(self):
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return self.html
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class CustomTagDescriptor(RawDescriptor):
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module_class = CustomTagModule
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