如何处理"|as_crispy_field got passed an invalid or inexistent field"错误消息？

Question

我正在制作一个只有几页的Web应用程序。在其中一个页面上，我想要一个看起来像这样的表单

https://i.stack.imgur.com/WsOJ6.jpg

但是，我不断收到一条错误消息，说：

引发 CrispyError('|as_crispy_field 被传递无效或 inexistent field'( crispy_forms.exceptions.CrispyError： |as_crispy_field传递了一个无效或不存在的字段 [10/7月/2019 23：21：12]"GET/year2 HTTP/1.1" 500 148042

这是我的 year2.html它似乎是错误发生的地方：

{% extends "HelloDjangoApp/layout.html" %}
{% load crispy_forms_tags %}
**HelloDjangoApp/year2.html**
{% block content %}
  <form method="post" novalidate>
    {% csrf_token %}
    <div class="row">
      <div class="col-6">
        {{ form.name|as_crispy_field }}
      </div>
      <div class="col-6">
        {{ form.email|as_crispy_field }}
      </div>
    </div>
    {{ form.job_title|as_crispy_field }}
    {{ form.bio|as_crispy_field }}
    <button type="submit" class="btn btn-success">Calculate</button>
  </form>
{% endblock %}

对于上下文，这是我 views.py

from django.shortcuts import render
from django.http import HttpResponse
from datetime import datetime
from django.shortcuts import render   # Added for this step
from django.views.generic import CreateView
from .models import Person
class PersonCreateView(CreateView):
    model = Person
    fields = ('name', 'email', 'job_title', 'bio')

def index(request):
    now = datetime.now()
    return render(
        request,
        "HelloDjangoApp/index.html",  # Relative path from the 'templates' folder to the template file
        # "index.html", # Use this code for VS 2017 15.7 and earlier
        {
            'title' : "Exam Results Calculator",
            'message' : "Hello!",
            'content' : " on " + now.strftime("%A, %d %B, %Y at %X"),
        }
    )
def about(request):
    return render(
        request,
        "HelloDjangoApp/about.html",
        {
            'title' : "Simply enter your scores to find out your average",
            'content' : "Example app page for Django."
        }
    )
def year1(request):
    return render(
        request,
        "HelloDjangoApp/year1.html",
        {
            'title' : "1st Year Average",
            'content' : "First Year Stuff"
        }
    )
def year2(request):
    return render(
        request,
        "HelloDjangoApp/year2.html",
        {
            'title' : "2nd Year Average",
            'content' : "Second Year Stuff"
        }
    )

def year3(request):
    return render(
        request,
        "HelloDjangoApp/year3.html",
        {
            'title' : "3rd Year Average",
            'content' : "3rd Year Stuff"
        }
    )
def year4(request):
    return render(
        request,
        "HelloDjangoApp/year4.html",
        {
            'title' : "4th Year Average",
            'content' : "4th Year Stuff"
        }
    )
# Create your views here.

还有我的 models.py

from django.db import models
# Create your models here.
class Person(models.Model):
    name = models.CharField(max_length=130)
    email = models.EmailField(blank=True)
    job_title = models.CharField(max_length=30, blank=True)
    bio = models.TextField(blank=True)

Answer 1

请重新检查您的 CBV - PersonCreateView。您在 year2 中访问的表单字段.html不是处理它的视图的表单实例的一部分。为了纠正这一点，1( 将您的 year2.html 模板重命名为 Person_form.html2( 从基于第 2 年的函数视图中删除"HelloDjangoApp/year2.html"。

希望这有帮助，谢谢。

Answer 2

你必须在所有

函数中return {'form': form} render

这样做：

def year2(request):
    form = Person()
    return render(
        request,
        "HelloDjangoApp/year2.html",
        {
            'form': form
        }
    )