从django中的端点清除和设定数据库种子

++更新了服务器错误的屏幕截图++

我正在尝试设置一个RESTAPI，该API可以被清除，然后通过端点对postgres db中的数据进行重新播种。我使用Django在fixtures文件中使用json数据执行此操作，在视图中执行一系列函数。到目前为止，这非常有效，但现在我正在尝试添加带有外键字段的数据

型号。py:

class Profile(models.Model):
    name = models.CharField(max_length = 100)
    profile_name = models.CharField(max_length = 100)
    email = models.CharField(max_length = 100)
    def __str__(self):
        return self.name

class Post(models.Model):
    title = models.CharField(max_length = 250)
    body = models.TextField(max_length = 4000)
    profile = models.ForeignKey(Profile, on_delete = models.CASCADE)
    def __str__(self):
        return self.title

class Comment(models.Model):
    title = models.CharField(max_length = 200)
    body = models.TextField(max_length = 1000)
    profile = models.ForeignKey(Profile, on_delete = models.CASCADE)
    post = models.ForeignKey(Post, on_delete = models.CASCADE)
    def __str__(self):
        return self.title

all_profiles = [
  {
    "name": "Robert Fitzgerald Diggs",
    "profile_name": "RZA",
    "email": "abbotofthewu@wutang.com"
  }
]

all_posts = [
  {
    "title": "Bring da Ruckus",
    "body": "some text",
    "profile": 5
  }
]

all_comments = [
  {
    "title": "famous dart",
    "body": "Ghostface catch the blast of a hype verse My Glock burst",
    "profile": 6,
    "post": 1
  }
]

def add_profile(new_profile):
    profile_instance = Profile.objects.create(**new_profile)
    profile_instance.save()

def add_post(new_post):
    found_profile = Profile.objects.get(id=new_post['profile'])
    new_post['profile'] = found_profile
    post_instance = Post.objects.create(**new_post)
    post_instance.save()

def add_comment(new_comment):
    found_profile = Profile.objects.get(id=new_comment['profile'])
    found_post = Post.objects.get(id=new_comment['post'])
    new_comment['profile'] = found_profile
    new_comment['post'] = found_post
    comment_instance = Comment.objects.create(**new_comment)
    comment_instance.save()

在视图中.py

def seed(request):
    Profile.objects.all().delete()
    reset(Profile)
    for profile in all_profiles:
        add_profile(profile)
    Post.objects.all().delete()
    reset(Post)
    for post in all_posts:
        add_post(post)
    Comment.objects.all().delete()
    reset(Comment)
    for comment in all_comments:
        add_comment(comment)
    return HttpResponse('database cleared and seeded')

def add_profile(new_profile):
    profile_instance = Profile.objects.create(**new_profile)
    profile_instance.save()

def add_post(new_post):
    post_instance = Post.objects.create(**new_post)
    post_instance.save()

def add_comment(new_comment):
    comment_instance = Comment.objects.create(**new_comment)
    comment_instance.save()

def reset(table):
    sequence_sql = connection.ops.sequence_reset_sql(no_style(), [table])
    with connection.cursor() as cursor:
        for sql in sequence_sql:
            cursor.execute(sql)

一些种子对象示例：

class Profile(models.Model):
    name = models.CharField(max_length = 100)
    profile_name = models.CharField(max_length = 100)
    email = models.CharField(max_length = 100)
    def __str__(self):
        return self.name

class Post(models.Model):
    title = models.CharField(max_length = 250)
    body = models.TextField(max_length = 4000)
    profile = models.ForeignKey(Profile, on_delete = models.CASCADE)
    def __str__(self):
        return self.title

class Comment(models.Model):
    title = models.CharField(max_length = 200)
    body = models.TextField(max_length = 1000)
    profile = models.ForeignKey(Profile, on_delete = models.CASCADE)
    post = models.ForeignKey(Post, on_delete = models.CASCADE)
    def __str__(self):
        return self.title

all_profiles = [
  {
    "name": "Robert Fitzgerald Diggs",
    "profile_name": "RZA",
    "email": "abbotofthewu@wutang.com"
  }
]

all_posts = [
  {
    "title": "Bring da Ruckus",
    "body": "some text",
    "profile": 5
  }
]

all_comments = [
  {
    "title": "famous dart",
    "body": "Ghostface catch the blast of a hype verse My Glock burst",
    "profile": 6,
    "post": 1
  }
]

def add_profile(new_profile):
    profile_instance = Profile.objects.create(**new_profile)
    profile_instance.save()

def add_post(new_post):
    found_profile = Profile.objects.get(id=new_post['profile'])
    new_post['profile'] = found_profile
    post_instance = Post.objects.create(**new_post)
    post_instance.save()

def add_comment(new_comment):
    found_profile = Profile.objects.get(id=new_comment['profile'])
    found_post = Post.objects.get(id=new_comment['post'])
    new_comment['profile'] = found_profile
    new_comment['post'] = found_post
    comment_instance = Comment.objects.create(**new_comment)
    comment_instance.save()

现在，当我点击我的端点时，我得到了一个类似“ValueError:Cannot assign”5的错误：“Post.profile”必须是一个“profile”实例。我假设这意味着在这种情况下整数“5”只是一个数字，不被视为任何引用，但我不确定该怎么办。我认为创建模型实例可以解决这个问题

以下是我的CLI错误：

---

有什么想法吗？

也许可以尝试加载字符串而不是整数？正如在“6”而不是“6”中一样？

计算出了它。从模型创建一个对象只需将外键引用保存为整数，但数据库需要一个完整实例，因此我必须在数据库中查询有问题的外部对象，对其进行变量化，并在保存前用变量重写整数

视图中的新功能：

class Profile(models.Model):
    name = models.CharField(max_length = 100)
    profile_name = models.CharField(max_length = 100)
    email = models.CharField(max_length = 100)
    def __str__(self):
        return self.name

class Post(models.Model):
    title = models.CharField(max_length = 250)
    body = models.TextField(max_length = 4000)
    profile = models.ForeignKey(Profile, on_delete = models.CASCADE)
    def __str__(self):
        return self.title

class Comment(models.Model):
    title = models.CharField(max_length = 200)
    body = models.TextField(max_length = 1000)
    profile = models.ForeignKey(Profile, on_delete = models.CASCADE)
    post = models.ForeignKey(Post, on_delete = models.CASCADE)
    def __str__(self):
        return self.title

all_profiles = [
  {
    "name": "Robert Fitzgerald Diggs",
    "profile_name": "RZA",
    "email": "abbotofthewu@wutang.com"
  }
]

all_posts = [
  {
    "title": "Bring da Ruckus",
    "body": "some text",
    "profile": 5
  }
]

all_comments = [
  {
    "title": "famous dart",
    "body": "Ghostface catch the blast of a hype verse My Glock burst",
    "profile": 6,
    "post": 1
  }
]

def add_profile(new_profile):
    profile_instance = Profile.objects.create(**new_profile)
    profile_instance.save()

def add_post(new_post):
    found_profile = Profile.objects.get(id=new_post['profile'])
    new_post['profile'] = found_profile
    post_instance = Post.objects.create(**new_post)
    post_instance.save()

def add_comment(new_comment):
    found_profile = Profile.objects.get(id=new_comment['profile'])
    found_post = Post.objects.get(id=new_comment['post'])
    new_comment['profile'] = found_profile
    new_comment['post'] = found_post
    comment_instance = Comment.objects.create(**new_comment)
    comment_instance.save()

---

谢谢，没有同样的错误。