在Django Rest框架中更新JSONField [英] Updating JSONField in django rest framework

问题描述

我目前对在django rest-framework中使用JSONField很熟悉，但是我找不到更新存储json中密钥的任何直接方法。过滤JSONField的方法有很多，具体取决于其内部键，但是似乎无法从已存储的JSONField中更改，更新或删除键。但是似乎postgres可以对json键进行一些修改，如此答案所解释的。

I currently became familiar with using JSONField in django rest-framework, but I could not find any straight forward way to update a key in a stored json. There are many ways to filter JSONField depends on its internal keys, but it seems that there is no way to change, update or delete a key from already stored JSONField. But it seems that postgres can do some modifications on json keys as this answer explained.

是否有任何功能可以对JSONFields进行修改。如果没有任何直接命令可以执行此操作，那么实现JSONField修改的最佳方法是什么？

Is there any function which is able to do modifications on JSONFields. If there is not any direct command to do this, what is the best way to implement modifications of a JSONField?

编辑：

例如，如果我有这样的模型：

As an example if I have a model like this:

class Thing(models.Model):
    name = models.CharField()
    properties = JSONField()

然后在 properties 中存储了一个像这样的json：

And in properties I stored a json like this :

{
"color" : "red",
"size" : "large",
"cost" : 1234
}

然后我想使用django命令将颜色更改为绿色。

Then I want to change the color to "green" by using django commands.

推荐答案

thing = Thing.objects.get(name="...")
thing.properties['color'] = 'green'
thing.save()

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