CODEWITHSUNDEEP
pythondjangodjango-rest-framework
cezar
cezar

Reputation: 12022

Django REST Framework doesn't display value in PUT form

Yesterday I posted a question and found a solution to that problem. The solution however caused another issue.
Please take a look at the question, so I don't have to duplicate the contents.

In the Browsable API the value for 'class_name' is not displayed in the PUT form.

The rendered HTML looks like this:

<div class="form-group ">
  <label class="col-sm-2 control-label ">
    Class
  </label>

  <div class="col-sm-10">
    <input name="class_name" class="form-control" type="text">
  </div>
</div>

For the other fields it displays the value properly, for example:

<div class="form-group ">
  <label class="col-sm-2 control-label ">
    Order
  </label>

  <div class="col-sm-10">
    <input name="order" class="form-control" value="Carnivora" type="text">
  </div>
</div>

Here are screenshots illustrating the problem: enter image description here enter image description here

You can see that the value for the key "class" is there. The name of the input element as well the field name in the model is "class_name".

I poked around the source code and found out that the form is rendered in the file renderers.py in the following order:

But I still don't know where to interfere and what should I change.

Also I tried to implement the method to_internal_value in the serializer, but this is only for the deserialization and has nothing to do with the form rendering.

Does anyone have an idea where the problem lies and what could be done?

UPDATE

I have created GitHub repo with the code. You can clone it or fork it and try to help me.
Many thanks!

Upvotes: 2

Views: 2893

Answers (1)

Tarun Lalwani
Tarun Lalwani

Reputation: 146580

I worked out another way which seemed to be working fine for me. This was to define a class field for the serializer outside the class:

class SpeciesSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = Species
        fields = (
            'url', 'id', 'canonical_name', 'slug',  'species', 'genus',
            'subfamily', 'family', 'order','class', 'phylum',
            'ncbi_id', 'ncbi_taxonomy',
        )
        read_only_fields = ('slug',)
        extra_kwargs = {
            'url': {'lookup_field': 'slug'}
        }

SpeciesSerializer._declared_fields["class"] = serializers.CharField(source="class_name")

After that both Raw Data and HTML Form look fine:

HTML Form

Raw Data

Upvotes: 6

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