为什么Django Crispy Forms抛出“模块'django.forms.forms'没有属性'BoundField'”

问题描述

当我在表单/字段上使用“ | crispy”或“ | as_crispy_field”过滤器时，我收到一个错误，指出该字段没有属性BoundField。

这工作正常，但是我更新了django / crispy表单，并且不确定是否错过了窍门？表单无需过滤器即可正常工作。

编辑：我正在使用Django 3.1.2和django-crispy-forms 1.8.1。

forms.py：

from django import forms
from django.utils import timezone
from bootstrap_modal_forms.forms import BSModalForm
from backgammon import models

class MatchForm(BSModalForm):
    date_played = forms.DateField(initial=timezone.Now)

class Meta:
    model = models.Match
    fields = [
        'date_played','winner','score'
        ]

views.py

from django.contrib.auth.mixins import PermissionrequiredMixin
from bootstrap_modal_forms.generic import BSModalCreateView
from .forms import MatchForm

class MatchCreate(PermissionrequiredMixin,BSModalCreateView):
    permission_required = 'backgammon.add_match'
    template_name = 'backgammon/match_form.html'
    form_class = MatchForm
    success_message = 'Match saved.'
    success_url = reverse_lazy('backgammon-index')

match_form.html

{% load crispy_forms_tags %}

<div class="container bg-light">
  <form method="post">
    {% csrf_token %}

     <div class="modal-body">
       {% for field in form %}
         <div class="form-group{% if field.errors %} invalid{% endif %}">
           {{ field|as_crispy_field }}
         </div>
       {% endfor %}
     </div>

     <div class="modal-footer">
       {% if object %}<a class="btn btn-danger mr-auto" href="{% url 'match-delete' pk=object.pk %}">Delete</a>{% endif %}
       <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
       <button type="button" class="submit-btn btn btn-primary">Save</button>
     </div>
  </form>

</div>

跟踪：

Traceback (most recent call last):
  File "C:\Users\harla\Anaconda3\envs\djangoenv\lib\site-packages\django\core\handlers\exception.py",line 47,in inner
    response = get_response(request)
  File "C:\Users\harla\Anaconda3\envs\djangoenv\lib\site-packages\django\core\handlers\base.py",line 202,in _get_response
    response = response.render()
  File "C:\Users\harla\Anaconda3\envs\djangoenv\lib\site-packages\django\template\response.py",line 105,in render
    self.content = self.rendered_content
  File "C:\Users\harla\Anaconda3\envs\djangoenv\lib\site-packages\django\template\response.py",line 83,in rendered_content
    return template.render(context,self._request)
  File "C:\Users\harla\Anaconda3\envs\djangoenv\lib\site-packages\django\template\backends\django.py",line 61,in render
    return self.template.render(context)
  File "C:\Users\harla\Anaconda3\envs\djangoenv\lib\site-packages\django\template\base.py",line 170,in render
    return self._render(context)
  File "C:\Users\harla\Anaconda3\envs\djangoenv\lib\site-packages\django\template\base.py",line 162,in _render
    return self.nodelist.render(context)
  File "C:\Users\harla\Anaconda3\envs\djangoenv\lib\site-packages\django\template\base.py",line 938,in render
    bit = node.render_annotated(context)
  File "C:\Users\harla\Anaconda3\envs\djangoenv\lib\site-packages\django\template\base.py",line 905,in render_annotated
    return self.render(context)
  File "C:\Users\harla\Anaconda3\envs\djangoenv\lib\site-packages\django\template\defaulttags.py",line 211,in render
    nodelist.append(node.render_annotated(context))
  File "C:\Users\harla\Anaconda3\envs\djangoenv\lib\site-packages\django\template\base.py",in render_annotated
    return self.render(context)
  File "C:\Users\harla\Anaconda3\envs\djangoenv\lib\site-packages\django\template\base.py",line 988,in render
    output = self.filter_expression.resolve(context)
  File "C:\Users\harla\Anaconda3\envs\djangoenv\lib\site-packages\django\template\base.py",line 698,in resolve
    new_obj = func(obj,*arg_vals)
  File "C:\Users\harla\Anaconda3\envs\djangoenv\lib\site-packages\crispy_forms\templatetags\crispy_forms_filters.py",line 98,in as_crispy_field
    if not isinstance(field,forms.BoundField) and settings.DEBUG:

Exception Type: AttributeError at /backgammon/match-create/
Exception Value: module 'django.forms.forms' has no attribute 'BoundField'

局部变量将变量描述为

没有松脆的过滤器，页面将正确加载：

解决方法

我通过安装最新版本 1.11.0 解决了这个问题： https://django-crispy-forms.readthedocs.io/en/latest/install.html pip 安装 django-crispy-forms==1.11.0

,

正如@ArakkalAbu所说，这是版本可比性问题。 conda forge中django-crispy-forms的版本已过时，并且与Django的最新版本不兼容。