77 lines
2.5 KiB
Python
77 lines
2.5 KiB
Python
"""
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Course API forms
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"""
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from collections import namedtuple
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from django.core.exceptions import ValidationError
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from django.forms import Form, CharField
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from opaque_keys import InvalidKeyError
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from opaque_keys.edx.keys import CourseKey
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from openedx.core.djangoapps.util.forms import ExtendedNullBooleanField
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class UsernameValidatorMixin(object):
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"""
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Mixin class for validating the username parameter.
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"""
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def clean_username(self):
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"""
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Ensures the username is provided unless the request is made
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as an anonymous user.
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"""
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username = self.cleaned_data.get('username')
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if not username:
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if not self.initial['requesting_user'].is_anonymous():
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raise ValidationError("A username is required for non-anonymous access.")
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return username or ''
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class CourseDetailGetForm(UsernameValidatorMixin, Form):
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"""
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A form to validate query parameters in the course detail endpoint
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"""
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username = CharField(required=False)
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course_key = CharField(required=True)
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def clean_course_key(self):
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"""
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Ensure a valid `course_key` was provided.
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"""
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course_key_string = self.cleaned_data['course_key']
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try:
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return CourseKey.from_string(course_key_string)
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except InvalidKeyError:
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raise ValidationError("'{}' is not a valid course key.".format(unicode(course_key_string)))
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class CourseListGetForm(UsernameValidatorMixin, Form):
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"""
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A form to validate query parameters in the course list retrieval endpoint
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"""
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username = CharField(required=False)
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org = CharField(required=False)
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# white list of all supported filter fields
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filter_type = namedtuple('filter_type', ['param_name', 'field_name'])
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supported_filters = [
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filter_type(param_name='mobile', field_name='mobile_available'),
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]
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mobile = ExtendedNullBooleanField(required=False)
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def clean(self):
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"""
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Return cleaned data, including additional filters.
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"""
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cleaned_data = super(CourseListGetForm, self).clean()
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# create a filter for all supported filter fields
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filter_ = dict()
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for supported_filter in self.supported_filters:
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if cleaned_data.get(supported_filter.param_name) is not None:
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filter_[supported_filter.field_name] = cleaned_data[supported_filter.param_name]
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cleaned_data['filter_'] = filter_ or None
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return cleaned_data
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