外键小部件找到多个值，我该如何处理 [英] Foreign key widget finds more than 1 value, how should i approach this

问题描述

我正在使用django-import-export库，并且正在尝试实现ForeignKey小部件，该小部件可用于使用Author.name而不是Author.pk查找相关对象.现在，这是给定日历年的棘手部分，我只有一位名字相同的作者，但是明年的作者姓名将相似.当然，当我尝试导入时，它带来的问题是发现的不仅仅是Author.name.

I am using django-import-export library and I am trying to implement ForeignKey widget which is available to lookup related objects using Author.name instead of Author.pk. Now, the here is the tricky part for the given calendar year I only have one author with the same name, however, next year the author name will be similar. When i try to import, of course, it brings the issue saying that more than Author.name was found.

是否有解决此问题的建议?

Is there a suggestion to solve the issue?

推荐答案

我使用了

I've used before_save_instance() to do something similar to this. Here's some pseudo-code for how this might work:

class MyModelResource(ModelResource):
    # Specify fields and Meta information here
    def before_save_instance(self, instance, using_transactions, dry_run):
        # Replace the below with your actual code
        year = instance.year
        author = Author.objects.filter(year=year)
        instance.author = author
        return instance

这假设您要获取正确作者的信息在您要导入的行中可用.

This assumes that the information you need to get the correct author is available in the row you're importing.

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