from django.contrib import admin# Register your models here.from books.models import Publisher, Author, Bookclass AuthorAdmin(admin.ModelAdmin):    list_display = (‘first_name‘, ‘last_name‘, ‘email‘)    search_fields = (‘first_name‘, ‘last_name‘)class BookAdmin(admin.ModelAdmin):    list_display = (‘title‘, ‘publisher‘,‘publication_date‘)    list_filter = (‘publication_date‘,)    date_hierarchy = ‘publication_date‘    ordering = (‘-publication_date‘,)    fields = (‘title‘, ‘authors‘, ‘publisher‘, )    filter_horizontal = (‘authors‘,)    raw_id_fields = (‘publisher‘, )admin.site.register(Publisher)admin.site.register(Author, AuthorAdmin)admin.site.register(Book, BookAdmin)