django-serializer

问题 I'm trying to write a "def create" method to perform nested serialization for multiple objects. def create(self, validated_data): suggested_songs_data = validated_data.pop('suggested_songs') suggest_song_list = list() for song_data in suggested_songs_data: song = Song.objects.create(**song_data) suggest_song_list.append(song) message = Messages.objects.create(suggested_songs=suggest_song_list, **validated_data) return message Here is my schema: class MessagesSerializer(serializers

问题 I'm trying to write a "def create" method to perform nested serialization for multiple objects. def create(self, validated_data): suggested_songs_data = validated_data.pop('suggested_songs') suggest_song_list = list() for song_data in suggested_songs_data: song = Song.objects.create(**song_data) suggest_song_list.append(song) message = Messages.objects.create(suggested_songs=suggest_song_list, **validated_data) return message Here is my schema: class MessagesSerializer(serializers

问题 I am getting the below error again and again.I am trying to solve it from morning but nothing is happening. assert queryset is not None, ' basename argument not specified, and could ' \ AssertionError: basename argument not specified, and could not automatically determine the name from the viewset, as it does not have a .queryset attribute. models.py class Language(models.Model): A = models.CharField(max_length=50) B = models.ForeignKey(User,on_delete=models.CASCADE,null=True) C = models

问题 I am fairly new to Django and unfamiliar with the best practices for this situation (in any framework/language, not just python/django). The situation is that when a user first registers on my site, I want to create an "organization" for them if it doesn't exists, and then subsequently create a user for them, which references the organization. I never want to insert one without the other, but I need to create the organization first so that the organization UUID can be saved for each user.

问题 I am fairly new to Django and unfamiliar with the best practices for this situation (in any framework/language, not just python/django). The situation is that when a user first registers on my site, I want to create an "organization" for them if it doesn't exists, and then subsequently create a user for them, which references the organization. I never want to insert one without the other, but I need to create the organization first so that the organization UUID can be saved for each user.

问题 I will try to give a small example and tell where it's not working. The models are as follows, class Address(models.Model): name = models.CharField(db_column='name', max_length=200, blank=False, null=False, unique=True) class Meta: managed = True db_table = 'Address' class Product(models.Model): title = models.CharField(db_column='title', max_length=200, blank=False, null=False) imageUrl = models.ImageField(db_column='image_url', blank=True, null=True, upload_to='deals/%Y/%m/') addresses =

问题 I'm using Python 3.7, Django 2.2, the Django rest framework, and pytest. I have the following model, in which I want to re-use an existing model if it exists by its unique key ... class CoopTypeManager(models.Manager): def get_by_natural_key(self, name): return self.get_or_create(name=name)[0] class CoopType(models.Model): name = models.CharField(max_length=200, null=False, unique=True) objects = CoopTypeManager() Then I have created the below serializer to generate this model from REST data

问题 After many years I code with Java, I got an interesting project at work to be developed using python django rest framework. I have a complex model, with many relations, in which I want to create entities in DB based on one JSON request. Please refer to attached screenshot of my DB model. My goal is to create new projects in the DB where I have set of companies in DB and a freelancer can suggest to a project of the company. I would like to get a JSON request that contains: company id (ALREADY

问题 Fellow programmers, I am getting a error NOT NULL constraint failed: music_song.performer_id I want the performer field to be the user who is creating the song but its not happening I have tried a lot can you guys please help me out with it models.py class Song(models.Model): name = models.CharField(_("Name"), max_length=50) song = models.FileField(_("Song"), upload_to=None, max_length=100) song_image = models.ImageField(upload_to=None, height_field=None, width_field=None,max_length=100)

问题 I'am creating a django application with a database including the following tables: I created the models as following: class Group(models.Model): id = models.AutoField(primary_key=True, editable=False) text = models.CharField(db_column='Text', max_length=4000) class Meta: db_table = 'Group' class Filters(models.Model): id = models.AutoField(primary_key=True, editable=False) text = models.CharField(db_column='Text', max_length=4000) group_id = models.ForeignKey(Group, on_delete=models.CASCADE,