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lmsege/lms/admin.py

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+from django.contrib import admin
+from unfold.admin import ModelAdmin, StackedInline
+from django.db import models
+from django.forms import widgets
+from .models import Subject, Assignment, Submission, Question, Answer
+
+@admin.register(Subject)
+class SubjectAdmin(ModelAdmin):
+    list_display = ('name',)
+    list_display_links = ('name',)
+
+class QuestionInline(StackedInline):
+    model = Question
+    extra = 1
+
+    class Media:
+        js = ('js/admin_assignment.js',)
+
+@admin.register(Assignment)
+class AssignmentAdmin(ModelAdmin):
+    list_display = ('title', 'subject', 'created_at')
+    list_display_links = ('title',)
+    list_filter = ('subject',)
+    search_fields = ('title', 'description')
+    exclude = ('created_by',)
+    inlines = [QuestionInline]
+    actions = ['delete_selected_assignments']
+
+    @admin.action(description="Удалить выбранные задания")
+    def delete_selected_assignments(self, request, queryset):
+        deleted_count = 0
+        for obj in queryset:
+            if self.has_delete_permission(request, obj):
+                obj.delete()
+                deleted_count += 1
+        self.message_user(request, f"Успешно удалено {deleted_count} заданий.")
+
+    def get_queryset(self, request):
+        qs = super().get_queryset(request)
+        if request.user.is_superuser or request.user.role == 'ADMIN':
+            return qs
+        return qs.filter(created_by=request.user)
+
+    def save_model(self, request, obj, form, change):
+        if getattr(obj, 'created_by_id', None) is None:
+            obj.created_by = request.user
+        super().save_model(request, obj, form, change)
+
+    def has_delete_permission(self, request, obj=None):
+        if request.user.is_superuser or request.user.role == 'ADMIN':
+            return True
+        if request.user.role == 'TEACHER':
+            if obj is not None and obj.created_by != request.user:
+                return False
+            return True
+        return False
+
+from django.utils.html import format_html
+
+class AnswerInline(StackedInline):
+    model = Answer
+    extra = 0
+    readonly_fields = ('question', 'get_student_answer')
+    fields = ('question', 'get_student_answer', 'is_correct', 'points', 'comment')
+    
+    def get_student_answer(self, obj):
+        if not obj or not obj.pk:
+            return ""
+        if obj.question.question_type == 'TEXT_AUTO':
+            return obj.text_answer or "Нет ответа"
+        else:
+            if obj.file_answer:
+                return format_html('<a href="{}" target="_blank">Скачать файл</a>', obj.file_answer.url)
+            return "Файл не прикреплен"
+    get_student_answer.short_description = 'Ответ ученика'
+    
+    def has_add_permission(self, request, obj=None):
+        return False
+
+@admin.register(Submission)
+class SubmissionAdmin(ModelAdmin):
+    change_list_template = "admin/lms/submission/change_list.html"
+    list_display = ('assignment', 'student', 'status', 'grade', 'submitted_at')
+    list_filter = ('status', 'assignment__subject', 'student')
+    search_fields = ('student__username', 'assignment__title')
+    inlines = [AnswerInline]
+
+    def get_queryset(self, request):
+        qs = super().get_queryset(request)
+        if request.user.is_superuser or request.user.role == 'ADMIN':
+            return qs
+        if request.user.role == 'TEACHER':
+            return qs.filter(assignment__created_by=request.user)
+        return qs.filter(student=request.user)