Django admin ManyToMany inline“没有ForeignKey to”错误 [英] Django admin ManyToMany inline "has no ForeignKey to" error

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问题描述

我将Django管理员设置为以下型号:

  class Quote(models.Model):
author = models.CharField(max_length = 100)
quote = models.CharField(max_length = 1000)
tags = models.ManyToManyField('Tag')

class标签(models.Model):
name = models.CharField(max_length = 100)

With以下代码:

  class TagInline(admin.TabularInline):
model = Tag

类QuoteAdmin(admin.ModelAdmin):
list_display =( 'author','quote')
inlines =(TagInline,)

class TagAdmin(admin.ModelAdmin):
pass

admin.site 。$ {$ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $> $>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>当尝试查看管理页面以添加引用时,该页面显示错误,说< class'quotes.models.Tag'>没有ForeignKey到< class'quotes.models.Quote'> 。在我添加内联之前没有发生。有什么问题?如何正确添加标签作为内联?



(我花了20分钟的时间搜索对于一个答案,我发现类似的问题,但他们的答案都没有为我工作。)

解决方案

管理员文档有一个部分致力于建立多对多关系。您应该使用 Quote.tags.through 作为 TagInline 的模型,而不是标签本身。


I'm setting up the Django admin to the following models:

class Quote(models.Model):                                                  
    author = models.CharField(max_length=100)                               
    quote = models.CharField(max_length=1000)                               
    tags = models.ManyToManyField('Tag')                                    

class Tag(models.Model):                                                    
    name = models.CharField(max_length=100)                                 

With the following code:

class TagInline(admin.TabularInline):                                                                                               
    model = Tag                                                             

class QuoteAdmin(admin.ModelAdmin):                                         
    list_display = ('author', 'quote')                                      
    inlines = (TagInline,)                                                  

class TagAdmin(admin.ModelAdmin):                                           
    pass                                                                    

admin.site.register(Quote, QuoteAdmin)                                      
admin.site.register(Tag, TagAdmin)

When trying to view the admin page to add a Quote, the page shows an error saying <class 'quotes.models.Tag'> has no ForeignKey to <class 'quotes.models.Quote'>. This didn't happen before I added an inline. What's the problem? How do I correctly add a Tag as an inline?

(I spent a good 20 minutes searching for an answer; I found similar questions but none of their answers worked for me.)

解决方案

Admin documentation has a section dedicated to inlining with many-to-many relationships. You should use Quote.tags.through as a model for TagInline, instead of Tag itself.

这篇关于Django admin ManyToMany inline“没有ForeignKey to”错误的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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