You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
112 lines
2.9 KiB
112 lines
2.9 KiB
from rest_framework import serializers
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from django.conf import settings
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from courses.models import Course, Lesson, Topic
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import os
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class TopicSerializer(serializers.ModelSerializer):
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children = serializers.SerializerMethodField()
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class Meta:
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model = Topic
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fields = '__all__'
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@staticmethod
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def get_children(self):
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return [MiniLessonSerializer(i).data for i in self.lesson_set.all()]
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class MiniLessonSerializer(serializers.ModelSerializer):
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class Meta:
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model = Lesson
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fields = ('title', 'free', 'token', 'is_hm', 'sort')
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class LessonSerializer(MiniLessonSerializer):
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course_slug = serializers.SerializerMethodField()
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materials = serializers.SerializerMethodField()
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class Meta:
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model = Lesson
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exclude = ('id', 'topic', 'key')
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@staticmethod
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def get_course_slug(self):
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return self.topic.course.slug
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@staticmethod
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def get_materials(self):
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try:
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prefix = 'materials/%s/%s/%s' % (self.topic.course.token, self.topic.id, self.token)
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name_list = os.listdir('%s/%s/' % (settings.MEDIA_ROOT, prefix))
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return ["%s%s/%s" % (settings.MEDIA_URL, prefix, i) for i in name_list]
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except FileNotFoundError:
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return []
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class TeacherLessonSerializer(MiniLessonSerializer):
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topic_sort = serializers.SerializerMethodField()
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topic_title = serializers.SerializerMethodField()
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course_title = serializers.SerializerMethodField()
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class Meta:
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model = Lesson
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fields = ('topic_sort', 'description', 'title', 'course_title', 'token', 'topic_title')
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@staticmethod
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def get_topic_sort(self):
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for topic_idx, topic in enumerate(self.topic.course.topic_set.all()):
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if topic == self.topic:
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return topic_idx + 1
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return None
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@staticmethod
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def get_topic_title(self):
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return self.topic.title
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@staticmethod
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def get_course_title(self):
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return self.topic.course.title
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class CourseInitSerializer(serializers.ModelSerializer):
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class Meta:
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model = Course
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fields = ['title', 'slug']
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class CourseTreeSerializer(serializers.ModelSerializer):
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tree = serializers.SerializerMethodField()
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class Meta:
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model = Course
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fields = ('tree', 'slug')
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@staticmethod
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def get_tree(self):
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return [TopicSerializer(i).data for i in self.topic_set.all()]
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class CourseDetailSerializer(serializers.ModelSerializer):
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level = serializers.SerializerMethodField()
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direction = serializers.SerializerMethodField()
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statistic = serializers.SerializerMethodField()
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class Meta:
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model = Course
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exclude = ('id', )
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@staticmethod
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def get_level(self):
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return self.get_level_display()
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@staticmethod
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def get_direction(self):
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return self.get_direction_display()
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@staticmethod
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def get_statistic(self):
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return self.get_statistic()
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