Django REST Framework and FileField absolute url

Question

I\'ve defined a simple Django app that includes the following model:

class Project(models.Model):
    name = models.CharField(max_length=200)
    thumbnail =         


        

Answer 1

I found it annoying to write the same code for a serialized method field. If you have set correctly the MEDIA_ROOT to your S3 bucket URL, you can add a field to the serializer like:

class ProjectSerializer(serializers.ModelSerializer):
    logo_url = serializers.URLField(read_only=True, source='logo.url')

    class Meta:
        model = Project

logo is an ImageField in the model. it must not be nullable in order to avoid errors like ValueError: The 'img' attribute has no file associated with it.

I only use .build_absolute_uri in a serializer methodfield to return absolute urls that use other views in my API. for example, in my project there is an URL /webviews/projects/ that shows, a title and a button that collects some user input (i.e. not exactly what you would do with suffixes, as it's not a plain representation of the resource but includes some logic instead). the end point /projects// contains a field "webview_url" ponting there, which is generated with SerializerMethodField. it's not media.