Django多对多字段数据渲染 [英] Django many to many field data rendering

问题描述

我想创建一个博客网站，作者和编辑者都可以拥有编辑选项，编辑者将由作者分配。现在我的模型字段如下所示：

I wanted to create a blog site where an author and editor can both have the edit option and the editors will be assigned by author. Now my model field looks like this :

class Editor(models.Model):

name = models.OneToOneField(Author, on_delete=models.CASCADE, null=True, blank=True)


class Blog(models.Model):


title = models.CharField(max_length=150, null=True, blank=True)
author = models.ForeignKey(Author, on_delete=models.CASCADE, null=True, blank=True)
editor = models.ManyToManyField(Editor, blank=True)
date_created = models.DateTimeField(auto_now_add=True)
article = models.TextField(blank=True, null=True)
genre = models.ManyToManyField(Genre, blank=True)


def __str__(self):
    return self.title

和views.py：

def blog(request, pk):


if request.user.is_authenticated:
    blogs = Blog.objects.get(id=pk) //for dynamic url
    editors = Editor.objects.all()

context = {'blogs':blogs,'editors':editors}
return render(request, 'blog/blog.html', context)

然后我想检查正在访问的人是否是作者还是没有编辑，所以我写了一个if条件：

then I wanted to check if the person who is accessing if author or editor or not, so I written an if condition :

{% if request.user.author == blogs.author or blogs.editor %}
<a href="#" class="btn btn-warning">Edit</a>
{% endif %}

但不幸的是，每个人都可以访问编辑按钮。我该怎么办？

but unfortunately the edit button can be accessed by everyone. what should I do?

推荐答案

首先。

{% if request.user.author == blogs.author or blogs.editor %}
<a href="#" class="btn btn-warning">Edit</a>
{% endif %}

在这段代码中，条件不是很好定义的。我的建议是采用这种方式：

In this piece of code, the condition is not very good defined. My suggestion is that you make this in this way:

{% if request.user.author == blogs.author or request.user.author == blogs.editor %}
<a href="#" class="btn btn-warning">Edit</a>
{% endif %}

这是一个建议。

现在，另一种可能性是使用JavaScript。

Now another posibility is to use JavaScript.

为此，我为您提供一些自己的代码示例。

In order to do that, I give you some code example of my own.

<script type="text/javascript">
        var editor = '{{user.author.editor}}'

        if (editor == 'False'){
            document.getElementById('edit').innerHTML = ''
        }
</script>

在此代码中，我定义的是，如果用户不是编辑者，则不会隐藏该元素（在html），其ID为 edit。因此，在您的模板中，为您的元素设置一个ID。

In this code, I'm defining that if the user is not a editor, I will not hide the element (In html) with id 'edit'. So in your template, set an id to your element.

<a id="edit" href="#" class="btn btn-warning">Edit</a>

为此，您将必须在模型中设置一个布尔字段。
您可以这样操作：

For this, you will have to set a boolean field in your model. You can do it like this:

class Editor(models.Model):

 name = models.OneToOneField(Author, on_delete=models.CASCADE, null=True, blank=True)
 editor = models.Boolean()

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