扩展django import

本文介绍了扩展django import_export的管理员导入表单的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我正在使用 Django import_export 在我的系统中实现CSV上传管理页面.现在，我有一个模型，其中包含一个外键列，但是每次导入时，外键列将只有一个值.因此，我希望允许用户从下拉列表中选择相关的模型实例，而不是强迫用户自己添加列.为此，我需要自定义导入表单，该表单需要覆盖默认方法import_action和process_import，但是到目前为止，我的工作并未显示任何效果.这是我到目前为止的内容:

I'm using Django import_export to implement CSV upload in my admin pages. Now I have one model, that contains a foreign key column, but the foreign key column will have only one value for each import. Therefore I would like to allow the user to choose the related model instance from a drop-down instead of forcing the user to append the columns themselves. In order to do this I need to customize the import form, which requires overriding the default methods import_action and process_import, but my efforts so far have shown no effect. Here is what I have so far:

from django import forms from import_export.forms import ImportForm from .models import MyModel, RelatedModel class CustomImportForm(ImportForm): """Add a model choice field for a given model to the standard form.""" appended_instance = forms.ModelChoiceField(queryset=None) def __init__(self, choice_model, import_formats, *args, **kwargs): super(CustomImportForm, self).__init__(import_formats, *args, **kwargs) self.fields['appended_instance'].queryset = choice_model.objects.all() @admin.register(MyModel) class MyModelAdmin(ImportExportModelAdmin): resource_class = SomeResource def import_action(self, request, *args, **kwargs): super().import_action(self, request, *args, **kwargs) form = CustomImportForm(RelatedModel, import_formats, request.POST or None, request.FILES or None)

现在，当我进入导入页面时，我得到了AttributeError MyModelAdmin has no attribute 'POST'，并且在本地变量中，我可以看到request object实际上是MyModelAdmin类，我相信这不是应该的./p>

Now when I go the import page I get the AttributeError MyModelAdmin has no attribute 'POST' and in the local vars I can see that the request object is actually the MyModelAdmin class, which is I believe is not what it's supposed to be.

推荐答案

我知道，这是一篇旧文章，但是在研究如何覆盖import_action时，我遇到了这个问题. 您的错误在这里: super().import_action(self, request, *args, **kwargs)

I know, this is an old post, but I ran into this, when looking on how to override the import_action. Your error is here: super().import_action(self, request, *args, **kwargs)

您应该在没有自我的情况下调用它:

You should call it without the self:

super().import_action(request, *args, **kwargs)

或对于较旧的python:

or for older python:

super(MyModelAdmin, self).import_action(request, *args, **kwargs)