Tutorial error posting with username/password: "Owner field is required" But owner id is saved instead of username.

[Lewis]

Hey guys-

I'm following the tutorial and on step 4 I'm trying to post a snippet with a username/password like this example:

http -a tom:password123 POST http://127.0.0.1:8000/snippets/ code="print 789"

But I get this error:

 "owner": [

        "This field is required."

 ]

I'm able to login through the browsable API and post snippets for each user there.  But it's not working from the command line.

I also noticed that my owner values saved in the database are numeric id's (e.g. 1, 2) instead of my usernames like the tutorial shows. 

The tutorial shows this response:

{

    "id": 5,

    "owner": "tom",

    "title": "foo",

    "code": "print 789",

    "linenos": false,

    "language": "python",

    "style": "friendly"

}

But my snippets look like this, note the numeric "owner" value even though I'm logged in as user "joe":

    {

        "id": 1,

        "owner": 2,

        "title": "Test",

        "code": "Code for Test",

        "linenos": true,

        "language": "abap",

        "style": "algol",

    }

I'm new to python and django.  So I'm probably overlooking the obvious.  I haven't done any extra steps besides what the tutorial told me to do.  I tried finding an answer to this and found a post that suggested adding the following code:

def pre_save(self, obj):
    obj.owner = self.request.user

But that didn't make a difference.

Any thoughts on what step I might have messed up in the tutorial?

Thanks!

[Lewis]

Problem solved!  I figured out my problem by watching this tutorial:

https://godjango.com/43-permissions-authentication-django-rest-framework-part-2/

I accidentally defined my SnippetSerializer like this:

class SnippetSerializer(serializers.ModelSerializer):

    class Meta:

        model = Snippet

        fields = ('id', 'title', 'code', 'linenos', 'language', 'style', 'owner')

        owner = serializers.ReadOnlyField(source='owner.username')

Instead of this (note the new location of the owner definition):

class SnippetSerializer(serializers.ModelSerializer):

    owner = serializers.ReadOnlyField(source='owner.username')    

    

    class Meta:

        model = Snippet

        fields = ('id', 'title', 'code', 'linenos', 'language', 'style', 'owner')

I hope this helps someone.

[Vasco Lameiras]

Thanks! I was stuck at this step...

[G Clovs]

I had the same Probleme!
Thanks for sharing.

[Phil]

+1 another thank you for this!