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50 lines
1.6 KiB
50 lines
1.6 KiB
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from rest_framework import serializers
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from apps.certificate.models import Certificate
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from apps.course.serializers import CourseDetailSerializer
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from django.conf import settings
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class CertificateSerializer(serializers.ModelSerializer):
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course = serializers.SerializerMethodField()
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certificate_file = serializers.SerializerMethodField()
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class Meta:
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model = Certificate
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fields = ['id', 'student', 'course', 'status', 'created_at', 'updated_at', 'certificate_file']
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read_only_fields = ['id', 'student', 'status', 'created_at', 'updated_at',]
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def get_course(self, obj):
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return CourseDetailSerializer(obj.course, context=self.context).data
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def get_certificate_file(self, obj):
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if obj.certificate_file:
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request = self.context.get('request')
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if request is not None:
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return request.build_absolute_uri(obj.certificate_file.url)
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return obj.certificate_file.url
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return None
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class CertificateRequestSerializer(serializers.ModelSerializer):
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class Meta:
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model = Certificate
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fields = ['id', 'course']
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read_only_fields = ['id']
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def create(self, validated_data):
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user = self.context['request'].user
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course = validated_data['course']
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if Certificate.objects.filter(student=user, course=course, status__in=['pending', 'approved']).exists():
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raise serializers.ValidationError({
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"course": "A certificate request for this course is already pending or approved."
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})
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return Certificate.objects.create(student=user, course=course)
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