Tell me how to transfer this code from Html to models-CodePudding

There is a code in html {{post.author.posts.count}} that counts the number of posts by the author. I have such a question, how to transfer it to views.py

def post_detail(request, post_id):
post = get_object_or_404(Post, id=post_id)
context = {
    'post': post,
}
return render(request, 'posts/post_detail.html', context)

class model

class Post(models.Model):
text = models.TextField(verbose_name='Текст')
pub_date = models.DateTimeField(
    auto_now_add=True,
    verbose_name='Дата публикации'
)
group = models.ForeignKey(
    Group,
    on_delete=models.SET_NULL,
    blank=True,
    null=True,
    related_name='posts',
    verbose_name='Группа',
)
author = models.ForeignKey(
    User,
    on_delete=models.CASCADE,
    related_name='posts',
    verbose_name='Автор',
)

def __str__(self):
    return self.text

I need to find an existing post, find its author and sort all posts by this author and calculate the total number of posts

CodePudding user response：

You can not pass values form HTML to views in Django, but you can create @property to count all posts of the specific author.

you can try like this

models.py

class Post(models.Model):
    text = models.TextField(verbose_name='Текст')
    pub_date = models.DateTimeField(
        auto_now_add=True,
        verbose_name='Дата публикации'
    )
    group = models.ForeignKey(
        Group,
        on_delete=models.SET_NULL,
        blank=True,
        null=True,
        related_name='posts',
        verbose_name='Группа',
    )
    author = models.ForeignKey(
        User,
        on_delete=models.CASCADE,
        related_name='posts',
        verbose_name='Автор',
    )

    def __str__(self):
        return self.text

views.py

def Demoview(request,post_id):
    get_post = Post.object.get(id=post_id)
    author_of_post = get_post.author 
    all_post_of_author= Post.object.filter(author__id=get_blog.author.id)
    count_all_post_of_author= Post.object.filter(author__id=get_blog.author.id).count()

    context = {

        'author_of_post':author_of_post,
        'all_post_of_author':all_post_of_author,
        'count_all_post_of_author':count_all_post_of_author,
    }

    return render(request,'post.html',context)

CodePudding user response：

Happened. Here is the code that came out.

def post_detail(request, post_id):
post = get_object_or_404(Post, id=post_id)
author = post.author
post_count = Post.objects.filter(author=author).count()
context = {
    'author': author,
    'post_count': post_count,
    'post': post,
}
return render(request, 'posts/post_detail.html', context)