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251 lines
9.6 KiB
251 lines
9.6 KiB
# -*- coding: utf-8 -*-
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from django.conf import settings
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from django.contrib.auth import get_user_model
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from django.contrib.contenttypes.fields import GenericForeignKey
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from django.contrib.contenttypes.models import ContentType
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from django.db import models
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from django.core.exceptions import ObjectDoesNotExist
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import json
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import unidecode
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from django.template.defaultfilters import slugify
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from maps.models import CourseRoute, CourseMap
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from lms.tools import decode_base64, get_real_name
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from lms.global_decorators import transaction_decorator
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from library.models import Tags
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from storage.models import File
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import random
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COURSE_LEVEL = (
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('B', 'Базовый'),
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('A', 'Продвинутый'),
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('E', 'Экспертный'),
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('B+A', 'Базовый + Продвинутый'),
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)
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COURSE_DIRECTION = (
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(3, 'Бизнес'),
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(2, 'Веб-дизайн'),
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(1, 'Разработка'),
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(4, 'Рисование'),
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)
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class CourseManager(models.Manager):
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@transaction_decorator
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def update_or_create_course(self, image=None, big_image=None, id=0, route=None,
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big_mobile_image=None, mentors=None, slug=None,
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teachers=None, level=None, direction=None, **kwargs):
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slug = slug if slug else slugify(unidecode.unidecode(kwargs['title']))
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if image:
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kwargs['image'] = decode_base64(image, 'course/image%s.png' % slug)
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if big_image:
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kwargs['big_image'] = decode_base64(big_image, 'course/big_image%s.png' % slug)
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if big_mobile_image:
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kwargs['big_mobile_image'] = decode_base64(big_mobile_image, 'course/big_mobile_image%s.png' % slug)
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if level:
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kwargs['level'] = get_real_name(COURSE_LEVEL, level)
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if direction:
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kwargs['direction'] = get_real_name(COURSE_DIRECTION, direction)
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if route:
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kwargs['route'] = CourseRoute.objects.get(id=route)
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try:
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course = self.get(id=id)
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for i in kwargs:
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if kwargs[i]:
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setattr(course, i, kwargs[i])
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course.save()
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except ObjectDoesNotExist:
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kwargs['slug'] = slug
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kwargs['route'] = CourseRoute.objects.create(name="Основной шаблон")
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course = self.create(**kwargs)
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CourseMap.objects.create(course=course)
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if mentors:
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for email in mentors:
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course.mentors.add(get_user_model().objects.get(email=email))
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if teachers:
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for email in teachers:
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course.teachers.add(get_user_model().objects.get(email=email))
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return course
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class Course(models.Model):
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hidden = models.BooleanField(verbose_name='Видно только оплатившим', default=False)
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level = models.CharField(verbose_name='Уровень', choices=COURSE_LEVEL, default='B', max_length=3)
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slug = models.SlugField(max_length=255, blank=True, default='', unique=True, editable=False)
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direction = models.SmallIntegerField(choices=COURSE_DIRECTION, verbose_name='Направление', null=True)
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sort = models.SmallIntegerField(null=True, verbose_name="Порядок сортировки")
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public = models.BooleanField(verbose_name='Опубликовать', default=False)
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title = models.CharField(verbose_name="Заголовок", max_length=255)
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description = models.TextField(verbose_name='Описание', blank=True)
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image = models.URLField(verbose_name='Изображение', blank=True, max_length=255)
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big_image = models.URLField(verbose_name='Большое изображение', blank=True, max_length=255)
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big_mobile_image = models.URLField(verbose_name='Под мобилку', blank=True, null=True,
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help_text='Большая картинка для мобильной версии', max_length=255)
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teachers = models.ManyToManyField(to=settings.AUTH_USER_MODEL, verbose_name='Преподаватели',
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related_name='course_teachers')
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route = models.OneToOneField(to=CourseRoute, verbose_name="Порядок прохождения по умолчанию", blank=True, null=True)
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def __str__(self):
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return self.title
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def get_teacher(self):
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return random.choice(self.teachers.all())
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def get_maps(self, user):
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return user.progress_set.get(course=self).get_template().get_maps()
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def get_vertexes(self, vertex_type=None):
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if vertex_type:
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return self.vertex_set.filter(content_type__model=vertex_type, course=self)
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return self.vertex_set.filter(course=self)
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def get_statistic(self):
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"""
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Минималистичная статистика по уроку,
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количество тем, уроков, домашек.
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"""
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return {
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"topic_count": self.get_vertexes('topic').count(),
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"tutorial_count": self.get_vertexes('tutorial').count(),
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"task_count": self.get_vertexes('task').count(),
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}
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def get_first(self, vertex_model_list=None):
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if vertex_model_list is None:
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vertex_model_list = ['topic', 'tutorial', 'task']
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else:
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for i in vertex_model_list:
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if i not in ['topic', 'tutorial', 'task']:
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raise ValueError('undefined model: ' + i)
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vertex = Vertex.objects.get(id=self.coursemap_set.get(sort=0).get_first())
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if vertex.content_type.model in vertex_model_list:
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return vertex
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return vertex.get_next(vertex_model_list)
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def get_last(self, vertex_model_list=None):
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if vertex_model_list is None:
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vertex_model_list = ['topic', 'tutorial', 'task']
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else:
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for i in vertex_model_list:
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if i not in ['topic', 'tutorial', 'task']:
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raise ValueError('undefined model: ' + i)
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vertex = Vertex.objects.get(id=self.coursemap_set.get(sort=0).get_last())
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if vertex.content_type.model in vertex_model_list:
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return vertex
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return vertex.get_previous(vertex_model_list)
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objects = CourseManager()
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class Meta:
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verbose_name = "Курс"
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verbose_name_plural = "Курсы"
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class Topic(models.Model):
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title = models.CharField(verbose_name='Название', max_length=255)
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icon = models.ImageField(verbose_name='Иконка темы', null=True, blank=True)
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course = models.ForeignKey(to=Course)
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class Meta:
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verbose_name = "Тема"
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verbose_name_plural = "Темы"
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class Vertex(models.Model):
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VALID_TYPE = (
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(3, 'Автаматическая валидация'),
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(2, 'Полуавтаматическая валидация'),
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(1, 'Ручная валидация'),
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(0, 'Без валидации'),
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)
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topic = models.ForeignKey(to=Topic)
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title = models.CharField(verbose_name='Название', max_length=255)
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free = models.BooleanField(default=True, verbose_name='Привилегии для узла не будут проверяться')
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description = models.TextField(verbose_name='Описание', default='', blank=True, null=True)
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video = models.TextField(verbose_name='Код видео', default='', blank=True, null=True)
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materials = models.ManyToManyField(File, verbose_name='Материалы урока', blank=True)
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valid_type = models.SmallIntegerField(choices=VALID_TYPE, default=0)
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def __str__(self):
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return self.title
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def get_next(self, route):
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return route.get_first().get_next(self)
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def get_previous(self, vertex_model_list=None):
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if vertex_model_list is None:
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vertex_model_list = ['topic', 'tutorial', 'task']
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else:
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for i in vertex_model_list:
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if i not in ['topic', 'tutorial', 'task']:
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raise ValueError('undefined model: ' + i)
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vertex_id = CourseMap.objects.get(course=self.course).get_previous(self.id)
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vertex = Vertex.objects.get(id=int(vertex_id), )
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if vertex.content_type.model in vertex_model_list:
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return vertex
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return vertex.get_previous(vertex_model_list)
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def is_more(self, vertex) -> bool:
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if not self.course == vertex.course:
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raise ValueError('Vertexes of different course')
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course_map = CourseMap.objects.get(course=self.course)
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return course_map.map_to_list().index(self.id) > course_map.map_to_list().index(vertex.id)
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def check_vertex(self, user) -> bool:
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if self.free:
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return True
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if not user.is_authenticated:
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return False
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try:
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progress = self.course.progress_set.get(user=user)
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except ObjectDoesNotExist:
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return False
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return progress.is_access(self)
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def get_number(self, vertex_type=None):
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"""
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Возврощает порядковый номер узла с определённым типом.
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Пример мы хотим определит какой по счёту теме принадлежит конкретно взятый урок.
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"""
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vertex_list = list(self.course.get_vertexes(vertex_type))
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try:
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res = vertex_list.index(self)
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except ValueError:
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parents = self.vertex_set.all()
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if parents.count() == 1:
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res = vertex_list.index(parents[0])
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else:
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res = None
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return res
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class Meta:
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verbose_name = "Урок"
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verbose_name_plural = "Уроки"
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