Question

我在django应用中有自定义用户字段和权限字段。文档说明如下：

https://docs.djangoproject.com/en/2.0/ref/models/fields/#django.db.models.ManyToManyField

我目前也在研究这篇文章：

http://charlesleifer.com/blog/describing-relationships-djangos-manytomany-through/

我们要使用manytomany through方法。

但我对它的正确实施感到困惑。下面我有两个型号。我正在寻求帮助，了解通过字段在这种情况下如何适用或根本不适用。

class STUser(AbstractBaseUser):
    email = models.EmailField(unique=True)
    name = models.CharField(max_length=255)
    companyname = models.CharField(max_length=200, blank=True, null=True)
    userphoto = models.CharField(max_length=200, blank=True, null=True)
    signupvaildatestring = models.CharField(max_length=200, blank=True, null=True)
    is_active = models.BooleanField(default=False)
    phone = models.CharField(max_length=10, null=True, blank=True)
    jobtitle = models.CharField(max_length=100, null=True, blank=True)
    # password field function is provided by AbstractBaseUser

和权限表

  class Permissions(models.Model):
    venue = models.ForeignKey(Venue, on_delete=models.DO_NOTHING, blank=True, null=True)
    user = models.ForeignKey(STUser, on_delete=models.DO_NOTHING)
    isclient = models.BooleanField(default=False)
    isvenueviewer = models.BooleanField(default=False)
    isvenueeventplanner = models.BooleanField(default=False)
    isvenueadministrator = models.BooleanField(default=False)
    issuitsviewer = models.BooleanField(default=False)
    issuitsadministrator = models.BooleanField(default=False)
    issuitssuperuser = models.BooleanField(default=False)

现在我应该使用通过字段吗？文档使用下面的示例是否与我的实现方式不同，我不需要使用直通字段？

from django.db import models

class Person(models.Model):
    name = models.CharField(max_length=50)

class Group(models.Model):
    name = models.CharField(max_length=128)
    members = models.ManyToManyField(
        Person,
        through='Membership',
        through_fields=('group', 'person'),
    )

class Membership(models.Model):
    group = models.ForeignKey(Group, on_delete=models.CASCADE)
    person = models.ForeignKey(Person, on_delete=models.CASCADE)
    inviter = models.ForeignKey(
        Person,
        on_delete=models.CASCADE,
        related_name="membership_invites",
    )
    invite_reason = models.CharField(max_length=64)

这一直令人困惑。

Answer 1

所以这是正确的实现。

public function actionView($id)
{
    $InsertChannel = new Channelmembers();

    if (Yii::$app->request->post('submit') == 'insertdata') {
        $InsertChannel->User_id = Yii::$app->user->getId();;
        $InsertChannel->Channel_id = $id;
        $InsertChannel->insert();
    }

    return $this->render('view', [
        'model' => $this->findModel($id),
    ]);
}

设置多对多关系的正确方法，其中中间字段具有外键django

1 个答案: