Django:基于类的视图无法呈现清晰的表格 [英] Django: Class based view can't render crispy form

问题描述

Stackoverflow大家好，

Hi Stackoverflow people,

我很难用基于类的视图来呈现酥脆的表格.当我使用基于函数的视图时，一切正常.

I have trouble to render a crispy form with a class based view. Everything worked fine when I used the function based views.

像往常一样，我按如下方式生成Forms.py:

As usual I generate forms.py as follows:

from django import forms    
from crispy_forms.helper import FormHelper
from crispy_forms.layout import Layout, Div, Submit, HTML, Button, Row, Field
from item.models import Item

class CreateItemForm(forms.ModelForm):
    class Meta:
        model = Item
        exclude = ('user',)

        def __init__(self, *args, **kwargs):
            self.helper = FormHelper()
            self.helper.form_tag = False
            self.helper.form_class = 'form-horizontal'
            self.helper.layout = Layout(
                Fieldset(
                    'Create your item here',
                    'name', 'description', 
                    'save',
                ),
            )
            self.request = kwargs.pop('request', None)
            return super(CreateItemForm, self).__init__(*args, **kwargs)

视图功能非常简单和标准:

The view function is very simple and standard:

from django.views.generic.edit import CreateView,
from item.models import Item
from item.forms import CreateItemForm

class ItemCreate(CreateView):
    form_class = CreateItemForm
    model = Item
    template_name = 'item/item_create_form.html' 

，模板也遵循以下最低要求:

and the template follows the minimal instructions as well:

{% extends "base.html" %}
{% load crispy_forms_tags %}
{% block content %}
<h2>Create new Item</h2>
            <form action="." class="crispy form-horizontal" method="post">
                {% crispy form form.helper %}
            </form>
{% endblock %}

我的问题是Django会抱怨在/item/add/处存在VariantDoesNotExist，在...中无法找到键[helper]."

My problem is that Django will complain "VariableDoesNotExist at /item/add/, Failed lookup for key [helper] in ...".

脆性表格与基于类的视图兼容吗?我如何交出帮助者信息以正确创建表单?

感谢您的帮助和建议.

推荐答案

构造函数过于缩进，这样，它属于表单的 Meta 类，但应直接位于CreateItemForm

constructor in your form is too indented, this way it belongs to form's Meta class, but it should be directly in CreateItemForm

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