Django：反向訪問器與反向訪問器發生沖突-有解無憂

在下面的代碼中，我有一個帖子，喜歡，評論模型。當我嘗試遷移模型以激活它時，我收到了反向訪問器錯誤。對于點贊，user_that_liked 只點贊一次，而 user_liked_to 可以有多次點贊。對于評論， user_that_commented 和 user_commented_to 都可以有很多評論。我應該如何設定我的模型，以便我可以對模型做我想做的事情，同時也解決這個問題。如果您需要更多資訊，請告訴我。

from django.db import models
from django.contrib.auth.models import User


class Post(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    post_question = models.CharField(max_length=200)
    pub_date = models.DateTimeField()


class Likes(models.Model):
    user_that_liked = models.ForeignKey(User, on_delete=models.CASCADE)
    user_liked_to = models.ForeignKey(User, on_delete=models.CASCADE)
    post = models.ForeignKey(Post, on_delete=models.CASCADE)
    date = models.DateTimeField()
    like_or_dislike = models.IntegerField(default=0)


class Comment(models.Model):
    user_that_commented = models.ForeignKey(User, on_delete=models.CASCADE)
    user_commented_to = models.ForeignKey(User, on_delete=models.CASCADE)
    post = models.ForeignKey(Post, on_delete=models.CASCADE)
    date = models.DateTimeField()
    comment = models.CharField(max_length=300)

uj5u.com熱心網友回復：

您需要指定相關名稱以區分關系

class Post(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    post_question = models.CharField(max_length=200)
    pub_date = models.DateTimeField()


class Likes(models.Model):
    user_that_liked = models.ForeignKey(User, on_delete=models.CASCADE, related_name='user_that_liked')
    user_liked_to = models.ForeignKey(User, on_delete=models.CASCADE, related_name='user_liked_to')
    post = models.ForeignKey(Post, on_delete=models.CASCADE)
    date = models.DateTimeField()
    like_or_dislike = models.IntegerField(default=0)


class Comment(models.Model):
    user_that_commented = models.ForeignKey(User, on_delete=models.CASCADE, related_name='user_that_commented')
    user_commented_to = models.ForeignKey(User, on_delete=models.CASCADE, related_name='user_commented_to')
    post = models.ForeignKey(Post, on_delete=models.CASCADE)
    date = models.DateTimeField()
    comment = models.CharField(max_length=300)

然而，攜帶這些用戶關系感覺有點多余，因為Likes只能擁有user_that_liked并且user_liked_to可以從喜歡的物件中派生出來。（評論相同）

那么 - 可以通過找到“喜歡”的like.post.user用戶和喜歡的用戶like.user_that_liked

轉載請註明出處，本文鏈接：https://www.uj5u.com/houduan/470240.html

標籤：Python django django模型

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