用django通知用户django。

suppose we have a model MarkPost. this model has ForeinKey relation to Post model.

假设我们有一个模型标记。该模型与后置模型具有显著的相关性。

class Post(models.Model):
    TITLE = (
             ('1', 'USA'),
             ('2', 'Europe'), )
    title =  models.CharField(max_length=1, choices=TITLE)

class MarkPost(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    post = models.ForeignKey(Post, on_delete=models.CASCADE, 
                                             related_name="marked")

example:

例子:

foo_post = Post.objects.create(title="1")
marked_post1 = MarkPost.objects.create(user="Foo", post=foo_post)

I'm trying to write some signal notification that if another Post instance made with value marked_post1.post.title ,notify the related user in marked_post1.I made a signal function for this purpose.

我在写一些信号通知，如果另一个Post实例是用value marked_post1。Post创建的。标题，在marked_post1中通知相关用户。为此我做了一个信号函数。

signals.py

signals.py

def created_post(sender, instance, created, **kwargs):
    marked = MarkPost.objects.get(pk=1)
    marked_title = marked.post.title
    if created and instance.title == marked_title :
        #logic of my code
        print(" new post made ")

post_save.connect(created_post, sender=Post)

this will work for one instance but how can do this in a general way for every user that marks a Post?

这对于一个实例来说是有用的，但是对于每一个标记Post的用户来说，如何做到这一点呢?

1 个解决方案

#1

Assuming that you have a defined logic behind the MarkPost's id calculation,

假设您在MarkPost的id计算后面有一个已定义的逻辑，

def logic_to_find_markpost_id(req_data):
    # do stuff to find MarkPost's id
    return markpost_id


def created_post(sender, instance, created, **kwargs):
    markpost_id = logic_to_find_markpost_id(req_data)
    marked = MarkPost.objects.get(pk=markpost_id)
    marked_title = marked.post.title
    if created and instance.title == marked_title:
        # logic of your code
        print(" new post made ")


post_save.connect(created_post, sender=Post)