[Answer]-Primary key should be read only in django admin. But during new entry insert it should be visible

Your class in admin.py should be like below. Please use get_readonly_fields to do this.

class EmployeeAdmin(admin.ModelAdmin):
        search_fields = ['name']
        list_display = ('name','id','dob','bill','mobile','email')
        list_filter = ('bill','proj')
      # readonly_fields=('id',)

        def get_readonly_fields(self, request, obj=None):
            if obj: # editing an existing object
                return self.readonly_fields + ('id',)
            return self.readonly_fields