# Django part 2- building the collections API- cannot post to /collections
**URL:** https://forum.codewithmosh.com/t/django-part-2-building-the-collections-api-cannot-post-to-collections/18057
**Category:** Django
**Created:** [February 2, 2023, 5:21am UTC](https://forum.codewithmosh.com/t/django-part-2-building-the-collections-api-cannot-post-to-collections/18057 "2023-02-02T05:21:03Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Mrfinesse47](https://forum.codewithmosh.com/u/Mrfinesse47)
#### Post date: [February 2, 2023, 5:21am UTC](https://forum.codewithmosh.com/t/django-part-2-building-the-collections-api-cannot-post-to-collections/18057/1 "2023-02-02T05:21:03Z")
No matter what I do i cannot post to /collections
it keeps on saying that the aggregate field products\_count is required.
has anyone else been able to POST to /collections?
I get the error on POST:
{
“products\_count”: [
“This field is required.”
]
}
---
### Author:  [@tooTALLtim](https://forum.codewithmosh.com/u/tooTALLtim)
#### Post date: [February 3, 2023, 12:10am UTC](https://forum.codewithmosh.com/t/django-part-2-building-the-collections-api-cannot-post-to-collections/18057/2 "2023-02-03T00:10:33Z")
Did you make products\_count a read-only field in your serializer?
Here’s what I have:
```auto
class CollectionSerializer(serializers.ModelSerializer):
class Meta:
model = Collection
fields = ['id', 'title', 'products_count']
products_count = serializers.IntegerField(read_only=True)
```
---
### Author:  [@Mrfinesse47](https://forum.codewithmosh.com/u/Mrfinesse47)
#### Post date: [February 3, 2023, 1:48am UTC](https://forum.codewithmosh.com/t/django-part-2-building-the-collections-api-cannot-post-to-collections/18057/3 "2023-02-03T01:48:29Z")
no I didnt,
that was the issue, thanks
---
### Author:  [@tooTALLtim](https://forum.codewithmosh.com/u/tooTALLtim)
#### Post date: [February 3, 2023, 2:39am UTC](https://forum.codewithmosh.com/t/django-part-2-building-the-collections-api-cannot-post-to-collections/18057/4 "2023-02-03T02:39:53Z")
For sure, cheers! 🔥 🔥
---
### Author:  [@mariselvam](https://forum.codewithmosh.com/u/mariselvam)
#### Post date: [June 23, 2023, 6:25am UTC](https://forum.codewithmosh.com/t/django-part-2-building-the-collections-api-cannot-post-to-collections/18057/5 "2023-06-23T06:25:03Z")
I used like to avoid this error
products\_count = serializers.IntegerField(required = False)