clean up cart and add order_id filed to order

backend/order/admin.py

@@ -35,6 +35,7 @@ class BankRecordInline(StackedInline):
     model = Bank
     extra = 0
     max_num = 0
+    tab = True
     def has_delete_permission(self, request, obj=None):
         return False
     def get_readonly_fields(self, request, obj=None):
@@ -46,11 +47,11 @@ class BankRecordInline(StackedInline):
 class OrderAdmin(ModelAdmin, ImportExportModelAdmin):
     import_form_class = ImportForm
     export_form_class = ExportForm
-
+    search_fields = ['order_id', 'user__phone', 'user__first_name', 'user__last_name', 'user__email']
     list_filter = ['is_paid', 'status']
     actions_list = ['redirect_to_learn', 'udpate_bank_status']
-    list_display = ['user', 'is_paid', 'status', 'discount_code', 'address',]
-    readonly_fields = ('created_at', )
+    list_display = ['order_id', 'user', 'is_paid', 'status', 'discount_code', 'address',]
+    readonly_fields = ('created_at', 'order_id', 'tax', 'final_price', 'cart_total', 'discount', 'discount_code', 'user', 'address', 'is_paid')
     compressed_fields = True
     warn_unsaved_form = True
     # exclude = ('bank_records',)