Django Rest FrameWork : SERIALIZERS

SERIALIZERS.

The Django Rest Framework provides powerful model serialization, display data using standard function based views, or get granular with powerful class based views for more complex functionality.

Serialization can simply be defined as  what allows complex data such as querysets, and model instances to be converted to native Python datatypes that can then be easily rendered into JSON, XML or other content types, and the reconversion to the complex version is referred to as deserialization).

Let’s see how to declare serializers:

# first let’s import serializers

from rest_framework import serializers

class CommentSerializer(serializers.Serializer):

      email = serializers.EmailField()

    content = serializers.CharField(max_length=200)

      created = serializers.DateTimeField()

#The above class defines the fields that gets serialized/deserialized. The above looks similar to declaring a form.

The serializers works basically based on Modelserializers class and HyperLinkedModelSerializers class.

The Modelserializers class lets you automatically create a Serializer class with fields that correspond to the Model fields, while HyperLinkedModelSerializers class which is similar to the ModelSerializer class uses hyperlinks to represent relationships, rather than primary keys.

For instance, for a model say

class Account(models.Model):

     account_name = models.CharField()

     users = models.CharField()

     created = models.BooleanField()

     address = models.CharField()

     Email = models.EmailField()

Modelserializer class for the model Account will look like this.

from rest_framework import serializers

class AccountSerializer(serializers.ModelSerializer):

    class Meta:

        model = Account

 

While for the HyperLinkedModelSerializers class, we will have something like this:

class AccountSerializer(serializers.HyperlinkedModelSerializer):

    class Meta:

        model = Account

        fields = ('url', 'id', 'account_name', 'users', 'created')

Note: In the HyperLinkedModelSerializers class, by default the serializer will include a url field instead of a primary key field.
The url field will be represented using a HyperlinkedIdentityField serializer field, and any relationships on the model will be represented using a HyperlinkedRelatedField serializer field.


THIS IS JUST PART A OF DJANGO REST FRAMEWORK( Serializers), I will be back for the other part later. If  you want another part of this post, or if this post was helpful in any way please leave your comment below.

Thanks for reading, I love U.







source(wiki,django RestFrameWork doc,me)