Exesize

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# from importlib.resources import _
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from django.contrib import admin
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from django.utils.html import format_html
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from mainapp.models import News, Courses, Lesson, CourseTeachers
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# admin.site.register(News)
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# admin.site.register(Courses)
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# admin.site.register(Lesson)
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# admin.site.register(CourseTeachers)
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@admin.register(News)
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class NewsAdmin(admin.ModelAdmin):
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    list_display = ('pk', 'preambule', 'created_at', 'slug', 'deleted')
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    list_filter = ('created_at', 'updated_at', 'deleted')
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    search_fields = ('title', 'body', 'preambule')
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    list_per_page = 5
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    actions = ['mark_deleted']
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    def mark_deleted(self, request, queryset):
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        queryset.update(deleted=True)
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    mark_deleted.short_description = 'Пометить как удалённые'
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    def slug(self, obj):
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        return format_html(
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            '<a href="http://127.0.0.1:8088/admin/mainapp/news/ {}/change/">{}</a>',
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            obj.pk,
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            obj.title
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        )
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    slug.short_description = 'Заголовок'
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@admin.register(Courses)
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class CoursesAdmin(admin.ModelAdmin):
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    list_display = ('pk', 'created_at', 'updated_at', 'slug', 'deleted',)
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    list_per_page = 5
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    list_filter = ('created_at', 'updated_at', 'deleted')
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    search_fields = ('name', 'description', 'cost')
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    show_full_result_count = False
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    def slug(self, obj):
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        return format_html(
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            '<a href="http://127.0.0.1:8088/admin/mainapp/courses/ {}/change/">{}</a>',
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            obj.pk,
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            obj.name
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        )
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    slug.short_description = 'Название курса'
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@admin.register(Lesson)
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class LessonAdmin(admin.ModelAdmin):
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    list_display = ('title', 'course', 'num', 'created_at', 'updated_at', 'deleted')
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    list_per_page = 10
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    list_filter = ('created_at', 'updated_at', 'deleted')
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    search_fields = ('title', 'description')
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    show_full_result_count = False
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@admin.register(CourseTeachers)
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class CourseTeachersAdmin(admin.ModelAdmin):
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    list_display = ('__str__', 'day_birth', 'deleted')
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    list_per_page = 10
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    list_filter = ('name_first', 'name_second')
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    search_fields = ('name_first', 'name_second')
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    show_full_result_count = False
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