Django 模型多项选择 [英] Django Model MultipleChoice

问题描述

我知道模型没有MultipleChoiceField，您只能在表单上使用它.

今天，我在分析与多项选择相关的新项目时遇到一个问题.

我想要一个像 CharField 这样的字段，带有 choices 和多选选项.

我其他时候通过创建一个 CharField 解决了这个问题，并使用 forms.MultipleChoiceField 管理表单中的多项选择，并存储以逗号分隔的选择.

在这个项目中，由于配置，我不能像上面提到的那样做，我需要在模型中做，我更喜欢NOT编辑Django管理表单 都不使用表格.我需要一个带有多项选择选项的模型字段

• 有人通过模型解决过类似的问题吗?

也许覆盖某些模型功能或使用自定义小部件...我不知道，我有点迷失在这里.

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编辑

我知道简单的选择，我想要类似的东西:

class MODEL(models.Model):我的选择 = (('a', 'Hola'),('b', '你好'),('c', '卓悦'),('d', 'Boas'),)......my_field = models.CharField(max_length=1，选择=MY_CHOICES)...

但具有保存多项选择而不仅仅是一项选择的能力.

解决方案

您需要考虑如何在数据库级别存储数据.这将决定您的解决方案.

据推测，您希望表中的单个列存储多个值.这也将迫使您考虑如何序列化 - 例如，如果您需要存储可能包含逗号的字符串，则不能简单地使用逗号分隔.

但是，您可能最好使用像 django-multiselectfield

I know there isn't MultipleChoiceField for a Model, you can only use it on Forms.

Today I face an issue when analyzing a new project related with Multiple Choices.

I would like to have a field like a CharField with choices with the option of multiple choice.

I solved this issue other times by creating a CharField and managed the multiple choices in the form with a forms.MultipleChoiceField and store the choices separated by commas.

In this project, due to configuration, I cannot do it as I mention above, I need to do it in the Models, and I prefer NOT to edit the Django admin form neither use forms. I need a Model Field with multiple choices option

• Have someone solved anything like this via Models ?

Maybe overriding some of the models function or using a custom widget... I don't know, I'm kinda lost here.

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Edit

I'm aware off simple choices, I would like to have something like:

class MODEL(models.Model):
    MY_CHOICES = (
        ('a', 'Hola'),
        ('b', 'Hello'),
        ('c', 'Bonjour'),
        ('d', 'Boas'),
    )
    ...
    ...
    my_field = models.CharField(max_length=1, choices=MY_CHOICES)
    ...

but with the capability of saving multiple choices not only 1 choice.

解决方案

You need to think about how you are going to store the data at a database level. This will dictate your solution.

Presumably, you want a single column in a table that is storing multiple values. This will also force you to think about how you will serialize - for example, you can't simply do comma separated if you need to store strings that might contain commas.

However, you are probably best off using a solution like django-multiselectfield

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