from django.contrib import admin
from quiz.models import Exam


@admin.register(Exam)
class ExamAdmin(admin.ModelAdmin):
    """Admin interface for Exams"""
    list_display = ['id', 'course', 'date', 'question_count', 'folder_path', 'created_at']
    list_filter = ['course', 'date']
    search_fields = ['name', 'folder_path']
    readonly_fields = ['created_at']

    def question_count(self, obj):
        """Show number of questions"""
        return obj.questions.count()
    question_count.short_description = '# Questions'