在django中如何从字符串值创建模型实例？ [英] In django how can i create a model instance from a string value?

问题描述

所有

我有字符串表示我的模型和字段，像这样

I have strings that represent my model and fields, like this

modelNameStr = 'MyModel'
fieldNameStr = 'modelField'

我的模型看起来像这样;

My model looks like this;

class MyModel(models.Model):
    modelField = ForeignKey( ForeignModel )
    ...

我想做的是创建一个 MyModel 使用字符串变量，如

What i want to do is create an instance of MyModel using the string variables, something like

model_instance = modelNameStr.objects.filter(fieldNameStr=ForeignModelInstance)

我该怎么做？

Gath

推荐答案

model_instance = ContentType.objects.get(app_label=u'someapp', model=modelNameStr).model_class()(**{fieldNameStr: ForeignModelInstance})

hew！尝试说 五次快！但请确保您使用适当的值 app_label 。

Phew! Try saying that five times fast! But make sure you use the appropriate value for app_label.

这篇关于在django中如何从字符串值创建模型实例？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！