69 lines
2.3 KiB
Python
69 lines
2.3 KiB
Python
"""
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Course API Serializers. Representing course catalog data
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"""
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import urllib
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from django.core.urlresolvers import reverse
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from rest_framework import serializers
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class _MediaSerializer(serializers.Serializer): # pylint: disable=abstract-method
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"""
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Nested serializer to represent a media object.
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"""
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def __init__(self, uri_attribute, *args, **kwargs):
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super(_MediaSerializer, self).__init__(*args, **kwargs)
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self.uri_attribute = uri_attribute
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uri = serializers.SerializerMethodField(source='*')
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def get_uri(self, course_overview):
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"""
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Get the representation for the media resource's URI
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"""
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return getattr(course_overview, self.uri_attribute)
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class _CourseApiMediaCollectionSerializer(serializers.Serializer): # pylint: disable=abstract-method
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"""
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Nested serializer to represent a collection of media objects
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"""
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course_image = _MediaSerializer(source='*', uri_attribute='course_image_url')
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course_video = _MediaSerializer(source='*', uri_attribute='course_video_url')
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class CourseSerializer(serializers.Serializer): # pylint: disable=abstract-method
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"""
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Serializer for Course objects
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"""
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course_id = serializers.CharField(source='id', read_only=True)
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name = serializers.CharField(source='display_name_with_default')
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number = serializers.CharField(source='display_number_with_default')
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org = serializers.CharField(source='display_org_with_default')
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short_description = serializers.CharField()
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effort = serializers.CharField()
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media = _CourseApiMediaCollectionSerializer(source='*')
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start = serializers.DateTimeField()
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start_type = serializers.CharField()
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start_display = serializers.CharField()
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end = serializers.DateTimeField()
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enrollment_start = serializers.DateTimeField()
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enrollment_end = serializers.DateTimeField()
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blocks_url = serializers.SerializerMethodField()
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def get_blocks_url(self, course_overview):
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"""
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Get the representation for SerializerMethodField `blocks_url`
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"""
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base_url = '?'.join([
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reverse('blocks_in_course'),
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urllib.urlencode({'course_id': course_overview.id}),
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])
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return self.context['request'].build_absolute_uri(base_url)
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