JsonField PostgreSQL problem

[Martín Peveri]

Hi, I have a model with a field JsonField of PostgreSQL of name 'data', like this:

class ItemCampaign(models.Model):

   campaign = models.ForeignKey(
       Campaign, related_name="itemscampaign", verbose_name="Item campaña"
   )
   data = JSONField(default=dict)

   def __str__(self):
       return self.campaign.name

In this field i have one record with this data, for example:

[{'number': '1160188479', 'id': 0, 'content': 'hello', 'processed': True}, {'number': '1160188479', 'id': 1, 'content': 'hello', 'processed': False}, {'number': '1160188479', 'id': 2, 'content': 'hello', 'processed': False}, {'number': '1162341721', 'id': 3, 'content': 'hello', 'processed': False}, {'number': '1162341721', 'id': 4, 'content': 'hello', 'processed': False}, {'number': '1162341721', 'id': 5, 'content': 'hello', 'processed': False}]

If i want filtered, like this:

itemscampaign.filter(data__contains=[{'processed': True}])

This code returned all content data field, Instead of just the dict with 'processed' in True. I want know if this is an error or not is possible.

Thanks!

[Arun Kumar]

For json fields you need to do

itemscampaign.filter(data__processed=True)

Your current query is only checking for existing of processed key in data.

[Martín Peveri]

Hi, That does not give me back anything.

The content type of data is:

type(c.itemscampaign.all()[0].data)

<class 'list'>

[Arun Kumar]

The above statement has to return 'dict'.

Replying to Martín Peveri:

Hi, That does not give me back anything.

The content type of data is:

>>> type(c.itemscampaign.all()[0].data)
<class 'list'>

[Tim Graham]

There might be a way to use QuerySet.annotate() to add an attribute with the result you expect, however, please see TicketClosingReasons/UseSupportChannels for places to usage questions like this.

[Martín Peveri]

Ok, perfect. And how can I insert many dictionaries in the field, as I have in my data if it is not in a list?