How to add and update data into foreign key field in django model












0














I have two models which is related to a forignkey. 



class BikeModel(models.Model):

    City = models.ForeignKey(CityForBike, on_delete=models.CASCADE)

    BikeModels = models.CharField(default='', max_length=50)

    Image = models.ImageField(upload_to='bike_images', blank=True, null=True, default='https://www.urbandrive.co.in/Admin/API/UploadedFiles/CarImage/44b150b3-f61a-41b5-afd8-34ded18fa980.png')



    class Meta:

        verbose_name_plural = 'BikeModels'



    def __str__(self):

        return self.BikeModels



class CityForBike(models.Model):

    CityForCars = models.CharField(default="",max_length=50)



    class Meta:

        verbose_name_plural = 'CityForBikes'



    def __str__(self):

        return self.CityForCars


and i want to insert data to BikeModel. but it gives me error.



 AssertionError: You cannot call `.save()` on a serializer with invalid data.


I want to know how to insert data to forign key field.



if request.method == 'POST':

    import pdb;

    pdb.set_trace()

    input_data = json.loads(request.read().decode('utf-8'))

    print(input_data)

    serializer = serializers.BikeModelSerializer(data=input_data)

    if serializer.is_valid():

        serializer.save()

        return render(request, "bike_model_add.html", {'car_city': car_city}, status=200)


And this is the data i am sending.



{'City': 'testo', 'BikeModels': 'ds'}


this is my serializers



class CityForBikeSerializer(serializers.ModelSerializer):

    class Meta:

        model = models.CityForBike

        fields = '__all__'



class BikeModelSerializer(serializers.ModelSerializer):

    class Meta:

        model = models.BikeModel

        fields = '__all__'





django python-3.x django-models







share|improve this question
























  • You need to show BikeModelSerializer.
    – Daniel Roseman
    Nov 20 '18 at 13:35










  • above are my BikeModelSerializer.
    – Nitesh Kumar
    Nov 20 '18 at 14:24










  • This is tagged as django, but ModelSerializer is not a django class: docs.djangoproject.com/en/2.1/search/?q=ModelSerializer This look like django-rest-framework. Also, json should be like {'City': 3, 'BikeModels': 'ds'}
    – dani herrera
    Nov 20 '18 at 15:13


















0














I have two models which is related to a forignkey. 



class BikeModel(models.Model):

    City = models.ForeignKey(CityForBike, on_delete=models.CASCADE)

    BikeModels = models.CharField(default='', max_length=50)

    Image = models.ImageField(upload_to='bike_images', blank=True, null=True, default='https://www.urbandrive.co.in/Admin/API/UploadedFiles/CarImage/44b150b3-f61a-41b5-afd8-34ded18fa980.png')



    class Meta:

        verbose_name_plural = 'BikeModels'



    def __str__(self):

        return self.BikeModels



class CityForBike(models.Model):

    CityForCars = models.CharField(default="",max_length=50)



    class Meta:

        verbose_name_plural = 'CityForBikes'



    def __str__(self):

        return self.CityForCars


and i want to insert data to BikeModel. but it gives me error.



 AssertionError: You cannot call `.save()` on a serializer with invalid data.


I want to know how to insert data to forign key field.



if request.method == 'POST':

    import pdb;

    pdb.set_trace()

    input_data = json.loads(request.read().decode('utf-8'))

    print(input_data)

    serializer = serializers.BikeModelSerializer(data=input_data)

    if serializer.is_valid():

        serializer.save()

        return render(request, "bike_model_add.html", {'car_city': car_city}, status=200)


And this is the data i am sending.



{'City': 'testo', 'BikeModels': 'ds'}


this is my serializers



class CityForBikeSerializer(serializers.ModelSerializer):

    class Meta:

        model = models.CityForBike

        fields = '__all__'



class BikeModelSerializer(serializers.ModelSerializer):

    class Meta:

        model = models.BikeModel

        fields = '__all__'





django python-3.x django-models







share|improve this question
























  • You need to show BikeModelSerializer.
    – Daniel Roseman
    Nov 20 '18 at 13:35










  • above are my BikeModelSerializer.
    – Nitesh Kumar
    Nov 20 '18 at 14:24










  • This is tagged as django, but ModelSerializer is not a django class: docs.djangoproject.com/en/2.1/search/?q=ModelSerializer This look like django-rest-framework. Also, json should be like {'City': 3, 'BikeModels': 'ds'}
    – dani herrera
    Nov 20 '18 at 15:13
















0












0








0







I have two models which is related to a forignkey. 



class BikeModel(models.Model):

    City = models.ForeignKey(CityForBike, on_delete=models.CASCADE)

    BikeModels = models.CharField(default='', max_length=50)

    Image = models.ImageField(upload_to='bike_images', blank=True, null=True, default='https://www.urbandrive.co.in/Admin/API/UploadedFiles/CarImage/44b150b3-f61a-41b5-afd8-34ded18fa980.png')



    class Meta:

        verbose_name_plural = 'BikeModels'



    def __str__(self):

        return self.BikeModels



class CityForBike(models.Model):

    CityForCars = models.CharField(default="",max_length=50)



    class Meta:

        verbose_name_plural = 'CityForBikes'



    def __str__(self):

        return self.CityForCars


and i want to insert data to BikeModel. but it gives me error.



 AssertionError: You cannot call `.save()` on a serializer with invalid data.


I want to know how to insert data to forign key field.



if request.method == 'POST':

    import pdb;

    pdb.set_trace()

    input_data = json.loads(request.read().decode('utf-8'))

    print(input_data)

    serializer = serializers.BikeModelSerializer(data=input_data)

    if serializer.is_valid():

        serializer.save()

        return render(request, "bike_model_add.html", {'car_city': car_city}, status=200)


And this is the data i am sending.



{'City': 'testo', 'BikeModels': 'ds'}


this is my serializers



class CityForBikeSerializer(serializers.ModelSerializer):

    class Meta:

        model = models.CityForBike

        fields = '__all__'



class BikeModelSerializer(serializers.ModelSerializer):

    class Meta:

        model = models.BikeModel

        fields = '__all__'





django python-3.x django-models







share|improve this question















I have two models which is related to a forignkey. 



class BikeModel(models.Model):

    City = models.ForeignKey(CityForBike, on_delete=models.CASCADE)

    BikeModels = models.CharField(default='', max_length=50)

    Image = models.ImageField(upload_to='bike_images', blank=True, null=True, default='https://www.urbandrive.co.in/Admin/API/UploadedFiles/CarImage/44b150b3-f61a-41b5-afd8-34ded18fa980.png')



    class Meta:

        verbose_name_plural = 'BikeModels'



    def __str__(self):

        return self.BikeModels



class CityForBike(models.Model):

    CityForCars = models.CharField(default="",max_length=50)



    class Meta:

        verbose_name_plural = 'CityForBikes'



    def __str__(self):

        return self.CityForCars


and i want to insert data to BikeModel. but it gives me error.



 AssertionError: You cannot call `.save()` on a serializer with invalid data.


I want to know how to insert data to forign key field.



if request.method == 'POST':

    import pdb;

    pdb.set_trace()

    input_data = json.loads(request.read().decode('utf-8'))

    print(input_data)

    serializer = serializers.BikeModelSerializer(data=input_data)

    if serializer.is_valid():

        serializer.save()

        return render(request, "bike_model_add.html", {'car_city': car_city}, status=200)


And this is the data i am sending.



{'City': 'testo', 'BikeModels': 'ds'}


this is my serializers



class CityForBikeSerializer(serializers.ModelSerializer):

    class Meta:

        model = models.CityForBike

        fields = '__all__'



class BikeModelSerializer(serializers.ModelSerializer):

    class Meta:

        model = models.BikeModel

        fields = '__all__'





django python-3.x django-models




django python-3.x django-models






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 20 '18 at 15:09









Cartucho

2,05111842




2,05111842










asked Nov 20 '18 at 13:30









Nitesh KumarNitesh Kumar

235




235












  • You need to show BikeModelSerializer.
    – Daniel Roseman
    Nov 20 '18 at 13:35










  • above are my BikeModelSerializer.
    – Nitesh Kumar
    Nov 20 '18 at 14:24










  • This is tagged as django, but ModelSerializer is not a django class: docs.djangoproject.com/en/2.1/search/?q=ModelSerializer This look like django-rest-framework. Also, json should be like {'City': 3, 'BikeModels': 'ds'}
    – dani herrera
    Nov 20 '18 at 15:13




















  • You need to show BikeModelSerializer.
    – Daniel Roseman
    Nov 20 '18 at 13:35










  • above are my BikeModelSerializer.
    – Nitesh Kumar
    Nov 20 '18 at 14:24










  • This is tagged as django, but ModelSerializer is not a django class: docs.djangoproject.com/en/2.1/search/?q=ModelSerializer This look like django-rest-framework. Also, json should be like {'City': 3, 'BikeModels': 'ds'}
    – dani herrera
    Nov 20 '18 at 15:13


















You need to show BikeModelSerializer.
– Daniel Roseman
Nov 20 '18 at 13:35




You need to show BikeModelSerializer.
– Daniel Roseman
Nov 20 '18 at 13:35












above are my BikeModelSerializer.
– Nitesh Kumar
Nov 20 '18 at 14:24




above are my BikeModelSerializer.
– Nitesh Kumar
Nov 20 '18 at 14:24












This is tagged as django, but ModelSerializer is not a django class: docs.djangoproject.com/en/2.1/search/?q=ModelSerializer This look like django-rest-framework. Also, json should be like {'City': 3, 'BikeModels': 'ds'}
– dani herrera
Nov 20 '18 at 15:13






This is tagged as django, but ModelSerializer is not a django class: docs.djangoproject.com/en/2.1/search/?q=ModelSerializer This look like django-rest-framework. Also, json should be like {'City': 3, 'BikeModels': 'ds'}
– dani herrera
Nov 20 '18 at 15:13














1 Answer
1






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oldest

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0














If you want to identify cities by their name in the bike serializer, you need to use SlugRelatedField.



class BikeModelSerializer(serializers.ModelSerializer):

    City = serializers.SlugRelatedField(slug_field='CityForCars')



    class Meta:

        model = models.BikeModel

        fields = '__all__'





share|improve this answer





















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    1 Answer
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    active

    oldest

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    active

    oldest

    votes









    0














    If you want to identify cities by their name in the bike serializer, you need to use SlugRelatedField.



    class BikeModelSerializer(serializers.ModelSerializer):
    
    City = serializers.SlugRelatedField(slug_field='CityForCars')
    

    
    class Meta:
    
        model = models.BikeModel
    
        fields = '__all__'





    share|improve this answer


























      0














      If you want to identify cities by their name in the bike serializer, you need to use SlugRelatedField.



      class BikeModelSerializer(serializers.ModelSerializer):
      
    City = serializers.SlugRelatedField(slug_field='CityForCars')
      

      
    class Meta:
      
        model = models.BikeModel
      
        fields = '__all__'





      share|improve this answer
























        0












        0








        0






        If you want to identify cities by their name in the bike serializer, you need to use SlugRelatedField.



        class BikeModelSerializer(serializers.ModelSerializer):
        
    City = serializers.SlugRelatedField(slug_field='CityForCars')
        

        
    class Meta:
        
        model = models.BikeModel
        
        fields = '__all__'





        share|improve this answer












        If you want to identify cities by their name in the bike serializer, you need to use SlugRelatedField.



        class BikeModelSerializer(serializers.ModelSerializer):
        
    City = serializers.SlugRelatedField(slug_field='CityForCars')
        

        
    class Meta:
        
        model = models.BikeModel
        
        fields = '__all__'






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 20 '18 at 15:39









        Daniel RosemanDaniel Roseman

        444k41576632




        444k41576632






























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