我怎样才能在没有post_detail页面的情况下将"post id"（与评论模型连接的外键字段）获取到django评论表单

Question

我正在创建一个单页博客站点，我怎样才能获得评论表单的 post id，我创建了带有必要字段的 django 表单，但问题是，我必须 select post id 从下拉菜单中手动评论，为此我将 post 对象作为表单的输入值传递给 views.py 文件，但 django 需要实例来保存在数据库中我应该怎么办现在做注意：我没有使用 post_detail

models.py

class comments(models.Model):
    name=models.CharField(max_length=255)
    content=models.TextField()
    post=models.ForeignKey(blog,related_name="comments",on_delete=models.CASCADE) 
    #blog is the model to which comment is related
    date=models.DateTimeField(auto_now_add=True)

forms.py

class commentform(ModelForm):
    class Meta:
        model=comments
        fields=('name','content','post')

        widgets={
            'name' : forms.TextInput(attrs={'class':'form-control','placeholder':'type your name here'}),
            'content' : forms.Textarea(attrs={'class':'form-control'}),
            'post' : forms.Select(attrs={'class':'form-control'})
        }

Html

<form method='POST' action="comment_action" class='form-group'>
{%csrf_token%}
{{form.name}}
{{form.content}}
<input type="text" id="objid" name="objid" value="{{objs.id}}" hidden>
<button class="btn btn-primary btn-sm shadow-none"  type="submit">Post comment</button>

views.py

def comment_action(request):
    name=request.POST.get('name')
    content=request.POST.get('content')
    objid=request.POST.get('objid')
    to_db=comments.objects.create(name=name,content=content,post=objid)
    print(name,content,objid)
    return redirect('/homepage')
    return render(request, 'index.html')

错误：

异常类型：ValueError 异常值：
无法分配“'48'”：“comments.post”必须是“博客”实例。

-->48是我的博客id

我知道数据库将只接受实例 post 字段，因为那是一个外键我的问题是如何通过它？

Answer 1

你用post_id分配它：

def comment_action(request):
    name = request.POST.get('name')
    content = request.POST.get('content')
    objid = request.POST.get('objid')
    to_db = comments.objects.create(name=name, content=content<b>, post_id=objid</b>)
    print(name,content,objid)
    return redirect('/homepage')

Note: It is better to use a Form [Django-doc] than to perform manual validation and cleaning of the data. A Form will not only simplify rendering a form in HTML, but it also makes it more convenient to validate the input, and clean the data to a more convenient type.

Note: normally a Django model is given a singular name, so Comment instead of ~~comments~~.

我怎样才能在没有post_detail页面的情况下将"post id"（与评论模型连接的外键字段）获取到django评论表单

how can i get the "post id"(foreign key field connected with comment model) to the django comments form without post_detail page in django

python

django

django-models

django-forms

django-views