How can i Get foreign key's value instead of id , in django rest framework -

sorry bad english hope u can understand mean.

out put im getting now:

[     {         "maincatname": 1,         "name": "harry potter",         "image": "/media/101029496--sites-default-files-images-101029496-3176173-1748009911-hp.jp-1_moxqrlp.jpg"     },     {         "maincatname": 2,         "name": "princes girl",         "image": "/media/character_princess_rapunzel_8320d57a.jpeg"     },     {         "maincatname": 3,         "name": "sex in city",         "image": "/media/250px-satc_title.jpg"     },     {         "maincatname": 4,         "name": "who dragon",         "image": "/media/reggio_calabria_museo_nazionale_mosaico_da_kaulon.jpg"     },     {         "maincatname": 2,         "name": "drama queen",         "image": "/media/15241421_170761763390015_7913498865987146084_n.jpg"     } ] 

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what want :
want to return forign key's (maincatname) value in table instead of id. ie value in [categoryname = models.charfield(max_length=50)] in models.py

like

[     {         "maincatname": story books,         "name": "harry potter",         "image": "/media/101029496--sites-default-files-images-101029496-3176173-1748009911-hp.jp-1_moxqrlp.jpg"     },     {         "maincatname": darama,         "name": "princes girl",         "image": "/media/character_princess_rapunzel_8320d57a.jpeg"     },     {         "maincatname": roamance,         "name": "sex in city",         "image": "/media/250px-satc_title.jpg"     },     {         "maincatname": sex,         "name": "who dragon",         "image": "/media/reggio_calabria_museo_nazionale_mosaico_da_kaulon.jpg"     },     {         "maincatname": darama,         "name": "drama queen",         "image": "/media/15241421_170761763390015_7913498865987146084_n.jpg"     } ] 

here code :

veiws.py :

class getcatveiw(apiview):     def get(self, request):         data = products.objects.only('maincatname','name','image')         serializer = getcat(data, many=true)         return response(serializer.data)      def post(self):         pass 

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models.py :

class category(models.model):     categoryname = models.charfield(max_length=50)     class meta:             verbose_name_plural = 'categories'          def __str__(self):         return self.categoryname  class products(models.model):     maincatname = models.foreignkey(category, on_delete=models.cascade)     name = models.charfield(max_length=50)     image = models.imagefield()     price = models.integerfield()     discriptionheading = models.charfield(max_length=100)     discriptionparagraph = models.textfield(max_length=1000)      class meta:             verbose_name_plural = 'products'          def __str__(self):             return str(self.maincatname)+' - '+self.name+' - '+str(self.price)+' $' 

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serializers.py :

class getcat(serializers.modelserializer):     class meta:         model = products         fields = ('maincatname', 'name', 'image') 

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you have slugrelatedfield that:

class getcat(serializers.modelserializer):     maincatname = serializers.slugrelatedfield(read_only=true, slug_field='categoryname')     class meta:         model = products         fields = ('maincatname', 'name', 'image') 

edit: i'm not sure it'll work products.objects.only('maincatname','name','image') you'll span database relation. you'll want use select_related avoid getting n+1 db query.