Hello Aarav, Can you cover create/update of Many to many relationship where an associative table(3rd table) holds the relation of two tables. I am good with creating(POST) but facing hard time while updating. Gone through many stackoverflow questions as well , didn't help. A small example or any authentic website/link where I could find the Update of associative table. Thanks
Thank you very much for the video. You have no idea how this has helped me alot! I had a problem with updating complex nested items ,with your tutorial now I'm good.
Appreciate Hardik for this amazing tutorial on DRF. id field in choices is ignore without doing like you did, it worked but I couldn't figure out why ?
What if instead of sending "id":4, "text": "BMW", I need to just send "id":4. Since I'm doing an update not a create why do I need to re-add the choice? But if I don't get I get a valuation error? Is there anyway I can reload the choice instance before the validation?
I have Author and Book models.In Book model, author is foreignkey. I want to display collection of books, for each author. So I have created property function in Author model and in Author serializer, I have added books in fields... But I'm only getting Book Id. I also want all fields of book.
How to do Nested Serializer for country select based on country list of States ,state select based on state list of filter district will return how to do using ....Using seralizer..
Great video, one question. How would you handle unique constraints with nested When trying to update or create I receive Software with this Software Name already exists, or Server with this Server Name already exists. How would you handle this? I have 2 models Software name unique=true slug Server name unique=true slug software m2m(Software)
Hi , I am using same process with mysql database, I am getting error like this 'Countries' is an invalid keyword argument for this function, please give me solution.Thank you
@@HardikPatelN yeah, but i need to post the data, for example in I need to post username, email and phone from one model and address line, postcode etc from another model, from a single api, so i dont have any idea, but your code is telling something to me... so i don`t want to use many = True then its a right way?
I am getting this error while trying to consume add new choice model, i am being told this ```IntegrityError at /api/choices/ (1048, "Column 'question_id' cannot be null")``` when i remove depth =1 , it works but when it is there , i get that error
Thank you so much for the video sir. I have a problem. I have similar project where I have to do similar thing like above. But what i need is, I need to show only one choices (int=pk) of a question(int=pk). That means , similar endpoint like localhost/api/question/1/choices/1. how can we do that. Please help.
@@HardikPatelN cant we do this using GenericApiview?? do we have to use viewset?? because i am very comfortable using viewset? and what is mixins used for??
@@HardikPatelN yeah but I don't have any idea about custom validation and all.. i need some more help or how the code will be like... Any idea or any source?
Hi how to create nested serializer like if select district then it's show model list ,if model select all village can show on villages how to implement
@@HardikPatelN thanks for reply. I tried inserting child without properties and it worked. But I wonder that when I change property name from choice_set to anything else it complains there is no such property in Question. Have no clue
Hi.. Below is my class and error. It works all well when I use choice_set but breaks if I use anything else like below choice_set2. Not sure if this property choice_set2 should have reference anywhere else. class QuestionSerializer(serializers.ModelSerializer): choice_set2 = ChoiceSerializer(many=True) class Meta: model = Question fields = ('pub_date', 'question_text', 'choice_set2') Got AttributeError when attempting to get a value for field `choice_set2` on serializer `QuestionSerializer`. The serializer field might be named incorrectly and not match any attribute or key on the `Question` instance. Original exception text was: 'Question' object has no attribute 'choice_set2'.
hey buddy, i need to store json array using ModelViewSet class.. everybody tells "you must override the update method", but i cant figure out how to solve it... i need some help to get on the way.. Can you help me bro? twitter: @jacsdev
@@HardikPatelN i find a nice way to solve it, i just change a little the update method in viewsetmodel n then added this line: serializer = self.get_serializer(data=request.data, many=isinstance(request.data, list)) now, i can to invoke "put method" (update) with a json array and it works like a charm!... Thanks for your feedback bro.
![สาวเมืองเพชร - ธีเดช ทองอภิชาติ [Official MV]](http://i.ytimg.com/vi/kEt7F9PvO3I/mqdefault.jpg)
This is a good tutorial, well worth the 30 min investment. There is gain of knowledge by min 15.
Hello Aarav, Can you cover create/update of Many to many relationship where an associative table(3rd table) holds the relation of two tables. I am good with creating(POST) but facing hard time while updating. Gone through many stackoverflow questions as well , didn't help. A small example or any authentic website/link where I could find the Update of associative table.
Thanks
Thank you very much for the video. You have no idea how this has helped me alot! I had a problem with updating complex nested items ,with your tutorial now I'm good.
Thanks you very much for your classes.
I learnt a lot from your django and REST API classes.
Please continue your videos
Thanks you
u r Don sir.... really thnx , even django docs also has no knowledge..
Thank you so much! very helpful!
Very thought through example, i find myself revisiting this video periodically
Me too haha
Thanks for this tutorial, very helpful!
You Sir are a genius. Thanks a ton for uploading this video.
Very informative and useful content, Thanks for the post
I become you fan sir, your videos are amazing.
thank you so much really you helped me with the "depth=1" :)
Great tutorial 👍...
Quentin Tarantino django in video tags 😂😂😂..
Thank you so much for sharing knowledge.
U saved my ass, brov :)
that was great you saved me in many problem
Appreciate Hardik for this amazing tutorial on DRF. id field in choices is ignore without doing like you did, it worked but I couldn't figure out why ?
Nice video sir, can you upload annotate and aggregate concep witj django...
nested serializers or joins in queryset, which one should we use for getting the data ?
hi, can hou help me why depth on my serilizers not working? just return flat data of jeon
What if instead of sending "id":4, "text": "BMW", I need to just send "id":4. Since I'm doing an update not a create why do I need to re-add the choice? But if I don't get I get a valuation error? Is there anyway I can reload the choice instance before the validation?
thank you so much ..really you saved my lot of time...
sir, can you make a video about double nested serializer....
I`m trying undesrtand better double nasted serializer... find you something? Thanks
Please do more help full
excellent bro!!! thank you so much
Thankyou for making this!
Sir at 6: 40 ,here we are creating choice serializer object without passing any data to choice serializer , so how it is retrieving the data?
Choice model has fk with Question model.
Nice video.
I have Author and Book models.In Book model, author is foreignkey. I want to display collection of books, for each author.
So I have created property function in Author model and in Author serializer, I have added books in fields... But I'm only getting Book Id. I also want all fields of book.
Hello sir, thank you so much for the tutorial and I have a question... How to upload files or multipart content in drf??
You really help me my friend.... Thank You .Best Regards
How to do Nested Serializer for country select based on country list of States ,state select based on state list of filter district will return how to do using ....Using seralizer..
This was so good!!
Great video, one question. How would you handle unique constraints with nested
When trying to update or create I receive Software with this Software Name already exists, or Server with this Server Name already exists.
How would you handle this?
I have 2 models
Software
name unique=true
slug
Server
name unique=true
slug
software m2m(Software)
Hi, Aarav I am trying a similar solution. But getting MainInventory() got an unexpected keyword argument 'group'.
class MainInventorySerializer(serializers.ModelSerializer):
class Meta:
model = MainInventory
fields = (
'inv_id',
'inv_name'
)
class MainGroupSerializer(serializers.ModelSerializer):
inv_id = MainInventorySerializer()
class Meta:
model = MainGroup
fields = (
'group_id',
'group_name',
'inv_id'
)
def create(self, validated_data):
inv_data = validated_data.pop('inv_id')
group = MainGroup.objects.create(**validated_data)
MainInventory.objects.create(**inv_data, group=group)
return group
My Model
class MainInventory(models.Model):
inv_id = models.IntegerField(verbose_name='INVENTORY ID', primary_key=True)
inv_name = models.CharField(verbose_name='INVENTORY NAME', max_length=512)
class MainGroup(models.Model):
group_id = models.IntegerField(verbose_name='GROUP ID', primary_key=True)
group_name = models.CharField(verbose_name='GROUP NAME', max_length=512)
inv_id = models.ForeignKey(related_name='group_inv', on_delete=models.SET_NULL, to='hosts.MainInventory', blank=True, null=True)
Hi , I am using same process with mysql database, I am getting error like this 'Countries' is an invalid keyword argument for this function, please give me solution.Thank you
Thanks a lot. But, how abt carryout out CRUD operation on 'choices' alone, along with display of question on read operation? Pls help
@@HardikPatelN sir, it will be so nice if can send me example to carry out crud on choices along with questions on read
Thank You
that's perfect
Is that possible to call like this without using primary and foreign key field in models.py ?
@@HardikPatelN yeah, but i need to post the data, for example in I need to post username, email and phone from one model and address line, postcode etc from another model, from a single api, so i dont have any idea, but your code is telling something to me...
so i don`t want to use many = True then its a right way?
Great Effort!
I am getting this error while trying to consume add new choice model, i am being told this ```IntegrityError at /api/choices/
(1048, "Column 'question_id' cannot be null")``` when i remove depth =1 , it works but when it is there , i get that error
Thank you so much for the video sir. I have a problem. I have similar project where I have to do similar thing like above. But what i need is, I need to show only one choices (int=pk) of a question(int=pk). That means , similar endpoint like localhost/api/question/1/choices/1. how can we do that. Please help.
stackoverflow.com/questions/64640122/i-have-to-pass-the-multiple-intpk-in-a-single-endpoint-for-django-rest-api This my actual problem.
@@HardikPatelN cant we do this using GenericApiview?? do we have to use viewset?? because i am very comfortable using viewset? and what is mixins used for??
how to join two tables in serializer and perform crud operation(not a multiple inheritance)?
@@HardikPatelN yeah but I don't have any idea about custom validation and all.. i need some more help or how the code will be like... Any idea or any source?
sir am getting error rquestion required after passing multiple choices
Hi how to create nested serializer like if select district then it's show model list ,if model select all village can show on villages how to implement
@@HardikPatelNgive me your mail I'd
@@HardikPatelN I don't get you
In your Question model class you have property declared returning function choice_set.() of self. I dont find choice_set in class!
@@HardikPatelN thanks for reply. I tried inserting child without properties and it worked. But I wonder that when I change property name from choice_set to anything else it complains there is no such property in Question. Have no clue
Hi..
Below is my class and error. It works all well when I use choice_set but breaks if I use anything else like below choice_set2.
Not sure if this property choice_set2 should have reference anywhere else.
class QuestionSerializer(serializers.ModelSerializer):
choice_set2 = ChoiceSerializer(many=True)
class Meta:
model = Question
fields = ('pub_date', 'question_text', 'choice_set2')
Got AttributeError when attempting to get a value for field `choice_set2` on serializer `QuestionSerializer`.
The serializer field might be named incorrectly and not match any attribute or key on the `Question` instance.
Original exception text was: 'Question' object has no attribute 'choice_set2'.
how to return a list choiches: ['bmw', 'audi'] from nested?
sir how to craete multiple foreginkey relation fileds in single table how u do that , i am grtting error, please do one video
TypeError: Direct assignment to the reverse side of a many-to-many set is prohibited. Use reportsTo.set() instead.
can anybody tell the solution
how to update multiple fields of model at single request.
hey buddy, i need to store json array using ModelViewSet class.. everybody tells "you must override the update method", but i cant figure out how to solve it... i need some help to get on the way.. Can you help me bro? twitter: @jacsdev
@@HardikPatelN i find a nice way to solve it, i just change a little the update method in viewsetmodel n then added this line: serializer = self.get_serializer(data=request.data, many=isinstance(request.data, list))
now, i can to invoke "put method" (update) with a json array and it works like a charm!... Thanks for your feedback bro.
instance.choices.remove(instance.choices.get(id=choice.id)) instead of choice.delete().
@@HardikPatelN Thank you
Choice is not in #jocking