Django 2.1 Python 3.6
我正在尝试使用Django的CreateView创建和保存三种形式。然后，我想重定向回父模型的detailview。但是，当我提交表单时，我将被重定向到配方/而不是配方/测试。我收到页面未找到（404）错误，因为配方/不存在。
没有回溯可以帮助我弄清楚发生了什么。有人可以告诉我我在代码中做错了什么吗？
models.py
from django.db import models
from django.utils.text import slugify
from django.urls import reverse
class Recipe(models.Model):
title = models.CharField(max_length=255)
description = models.TextField()
slug = models.SlugField(default='')
def save(self, *args, **kwargs):
self.slug = (slugify(self.title))
super().save(*args, **kwargs)
def get_absolute_url(self):
return reverse('recipes:RecipeDetail',
kwargs = {'slug': self.slug})
class Ingredient(models.Model):
recipe = models.ForeignKey(Recipe,
on_delete = models.CASCADE)
description = models.CharField(max_length=255)
class Instruction(models.Model):
recipe = models.ForeignKey(Recipe,
on_delete = models.CASCADE)
number = models.PositiveSmallIntegerField()
description = models.TextField()
def get(self, request, *args, **kwargs):
"""
Handles GET requests and instantiates blank versions of the form
and its inline formsets.
"""
self.object = None
form_class = self.get_form_class()
form = self.get_form(form_class)
ingredient_form = IngredientFormSet()
instruction_form = InstructionFormSet()
return self.render_to_response(
self.get_context_data(form=form,
ingredient_form=ingredient_form,
instruction_form=instruction_form))
def post(self, request, *args, **kwargs):
"""
Handles POST requests, instantiating a form instance and its inline
formsets with the passed POST variables and then checking them for
validity.
"""
self.object = None
form_class = self.get_form_class()
form = self.get_form(form_class)
ingredient_form = IngredientFormSet(self.request.POST)
instruction_form = InstructionFormSet(self.request.POST)
if (form.is_valid() and ingredient_form.is_valid() and
instruction_form.is_valid()):
return self.form_valid(form, ingredient_form, instruction_form)
else:
return self.form_invalid(form, ingredient_form, instruction_form)
return super(RecipeCreateView, self).form_valid(form, ingredient_form, instruction_form)
def form_valid(self, form, ingredient_form, instruction_form):
"""
Called if all forms are valid. Creates a Recipe instance along with
associated Ingredients and Instructions and then redirects to a
success page.
"""
self.object = form.save()
ingredient_form.instance = self.object
ingredient_form.save()
instruction_form.instance = self.object
instruction_form.save()
return super(RecipeCreateView, self).form_valid(form, ingredient_form, instruction_form)
def form_invalid(self, form, ingredient_form, instruction_form):
"""
Called if a form is invalid. Re-renders the context data with the
data-filled forms and errors.
"""
return self.render_to_response(
self.get_context_data(form=form,
ingredient_form=ingredient_form,
instruction_form=instruction_form))
urls.py
from django.urls import path
from recipes.views import (RecipeCreateView,
RecipeDetail)
app_name = 'recipes'
urlpatterns = [
path('add',
RecipeCreateView.as_view(),
name = 'AddRecipe'),
path('<slug:slug>',
RecipeDetail.as_view(),
name = 'RecipeDetail'),
]
template.html
<!DOCTYPE html>
<html>
<head>
<title>Multiformset Demo</title>
<script src="https://code.jquery.com/jquery-3.4.1.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.formset/1.2.2/jquery.formset.js"></script>
<script type="text/javascript">
$(function() {
$(".inline.{{ ingredient_form.prefix }}").formset({
prefix: "{{ ingredient_form.prefix }}",
})
$(".inline.{{ instruction_form.prefix }}").formset({
prefix: "{{ instruction_form.prefix }}",
})
})
</script>
</head>
<body>
<div>
<h1>Add Recipe</h1>
<form action="." method="post">
{% csrf_token %}
<div>
{{ form.as_p }}
</div>
<fieldset>
<legend>Recipe Ingredient</legend>
{{ ingredient_form.management_form }}
{{ ingredient_form.non_form_errors }}
{% for form in ingredient_form %}
{{ form.id }}
<div class="inline {{ ingredient_form.prefix }}">
{{ form.description.errors }}
{{ form.description.label_tag }}
{{ form.description }}
</div>
{% endfor %}
</fieldset>
<fieldset>
<legend>Recipe instruction</legend>
{{ instruction_form.management_form }}
{{ instruction_form.non_form_errors }}
{% for form in instruction_form %}
{{ form.id }}
<div class="inline {{ instruction_form.prefix }}">
{{ form.number.errors }}
{{ form.number.label_tag }}
{{ form.number }}
{{ form.description.errors }}
{{ form.description.label_tag }}
{{ form.description }}
</div>
{% endfor %}
</fieldset>
<input type="submit" value="Add recipe" class="submit" />
</form>
</div>
</body>
</html>
答案 0 :(得分：0)
我认为您需要在POST方法（在表单提交时将被调用）的末尾指定对食谱/测试的重定向，否则默认情况下Django将被重定向到食谱/测试。