cmsmanage/membershipworks/admin.py

from django.contrib import admin

from .models import Member, Flag


class ReadOnlyAdmin(admin.ModelAdmin):
    def has_add_permission(self, request, obj=None):
        return False

    def has_change_permission(self, request, obj=None):
        return False

    def has_delete_permission(self, request, obj=None):
        return False


class MemberFlagInline(admin.TabularInline):
    model = Member.flags.through


@admin.register(Member)
class MemberAdmin(ReadOnlyAdmin):
    search_fields = ['account_name']
    inlines = [MemberFlagInline]


@admin.register(Flag)
class FlagAdmin(ReadOnlyAdmin):
    inlines = [MemberFlagInline]