任何人都可以告诉我如何仅使用模型中的外键才能获得适当的输出

Question

这是我的型号。文件
models.py

from django.db import models
from django.utils import timezone

class Movielist(models.Model) :
    Title = models.CharField(max_length=1000)
    Description = models.TextField(blank=True)
    ReleaseDate = models.DateTimeField(verbose_name='Release Date', blank=True)
    Upvote = models.IntegerField(default=0)
    Downvote = models.IntegerField(default=0)
    
    def __str__(self):
        return self.Title

class Actorlist(models.Model):
    Name = models.CharField(max_length=1000)
    DateofBirth = models.DateTimeField(verbose_name='Date of Birth',blank=True)

    def __str__(self):
        return self.Name

class ActorInMovie(models.Model):
    Movie = models.ForeignKey(Movielist, default=1, on_delete=models.CASCADE, blank=True, related_name='ActorInMovie')
    Actor = models.ForeignKey(Actorlist, default=1, on_delete=models.CASCADE, blank=True,related_name='ActorsMovie')
    
    def __str__(self):
        return self.Movie.Title

这是我的views.py文件
views.py

@api_view(['GET'])
def apiOverview(request):
    api_urls = {
        'List':'/task-list/',
        'Detail View':'/task-detail/<str:pk>/',
        'Create':'/task-create/',
        'Update':'/task-update/<str:pk>/',
        'Delete':'/task-delete/<str:pk>/',
    }
    return Response(api_urls)

@api_view(['GET'])
def MovieName(request):
    MovieName = Movielist.objects.prefetch_related('ActorInMovie')
    serializer = MovieListSerializer(MovieName, many=True)
    return Response(serializer.data)

这是我的serializer.py文件 serializers.py

from rest_framework import serializers
from .models import *

class MovieListSerializer(serializers.ModelSerializer):
    class Meta:
        model = Movielist
        fields = "__all__"

作为输出，我会得到下面的情况，

[
    {
        "id": 1,
        "Title": "KGF Chapter 1",
        "Description": "This is very thrilling and suspenseful movie",
        "ReleaseDate": "2022-04-18T16:22:03Z",
        "Upvote": 5,
        "Downvote": 2
    },
    {
        "id": 2,
        "Title": "RRR",
        "Description": "This is a south Indian movie",
        "ReleaseDate": "2022-04-19T06:46:54Z",
        "Upvote": 2,
        "Downvote": 3
    },
    {
        "id": 3,
        "Title": "Doctor Strange",
        "Description": "this movie is a part of marvel cinematic universe.",
        "ReleaseDate": "2022-04-22T07:19:07Z",
        "Upvote": 12,
        "Downvote": 7
    }
]

任何人都可以告诉我如何获得这样的输出，

[
    {
        "id": 1,
        "Title": "KGF Chapter 1",
        "Description": "This is very thrilling and suspenseful movie",
        "ReleaseDate": "2022-04-18T16:22:03Z",
        "Actor": {yxz, yzx, xyz}
        "Upvote": 5,
        "Downvote": 2
    },
    {
        "id": 2,
        "Title": "RRR",
        "Description": "This is a south Indian movie",
        "ReleaseDate": "2022-04-19T06:46:54Z",
        "Actor": {yxz, yzx, xyz}
        "Upvote": 2,
        "Downvote": 3
    },
    {
        "id": 3,
        "Title": "Doctor Strange",
        "Description": "this movie is a part of marvel cinematic universe.",
        "ReleaseDate": "2022-04-22T07:19:07Z",
        "Actor": {yxz, yzx, xyz}
        "Upvote": 12,
        "Downvote": 7
    }
]

请帮助我解决此错误。我必须进一步链接此角度，因此请帮助我找到适当的输出

Answer 1

首先，我将使用电影和演员之间的多托马尼关系。
这看起来像这样：

models.py：

class Actorlist(models.Model):
    Name = models.CharField(max_length=1000)
    DateofBirth = models.DateTimeField(verbose_name='Date of Birth',blank=True)

    def __str__(self):
        return self.Name


class Movielist(models.Model) :
    Title = models.CharField(max_length=1000)
    Description = models.TextField(blank=True)
    ReleaseDate = models.DateTimeField(verbose_name='Release Date', blank=True)
    Upvote = models.IntegerField(default=0)
    Downvote = models.IntegerField(default=0)
    Actors = models.ManyToManyField(Actorlist)
    
    def __str__(self):
        return self.Title

之后，您应该在输出中看到演员。
我还建议您从django-rest-framework阅读关系文档：

https： //www.django-rest-framework.org/api-guide/relations/