为什么我看不到来自 ValidationError Django 的错误消息?
Why I cannot see a error message from ValidationError Django?
我已经完成了 Django 文档中写的内容,并且尝试了几个 Youtube 教程,包括 Whosebug 的建议。但是,我无法使消息“验证错误”出现在模板上。当我单击按钮创建一个带有 bad_word 的 post 时,我重定向到同一页面,post 没有保存,但表单没有向我显示消息。我试图在视图中保存打印( form.errors ),终端显示了我想在模板中看到的消息。所以我不知道我做错了什么...
view.py
if request.method == "POST":
form = PostForm(request.POST)
if form.is_valid():
title = form.cleaned_data['title']
content = form.cleaned_data['content']
username = User.objects.get(username=f"{request.user}")
new_post = Post(user=username, title=title, content=content, datetime=timezone.now())
new_post.writeOnChain()
cache.expire("cache", timeout=0)
return HttpResponseRedirect("/")
else:
form = PostForm()
return render(request, "api/homepage.html", {'form': form, 'postList': postList})
forms.py
class PostForm(forms.ModelForm):
class Meta:
model = Post
fields = ('title', 'content',)
def clean_title(self):
title = self.cleaned_data['title']
if "bad_word" in title:
raise forms.ValidationError("Error")
return title
def clean_content(self):
content = self.cleaned_data['content']
if "bad_word" in content:
raise forms.ValidationError("Error")
return content
模板
<div class="p-3 forms m-3">
<form class="crispy" action="{% url 'homepage' %}" method="post">
{% csrf_token %}
{{ form|crispy }}
<input type="submit" class="btn buttons" value="Create Post">
</form>
</div>
终端打印
<ul class="errorlist"><li>content<ul> class="errorlist"><li>Error</li></ul> </li></ul>
如果您的表单无效,您总是会在没有表单信息的情况下重定向到“/”。您的 return redirect
需要与其余“有效”表单代码一起缩进。
if request.method == "POST":
form = PostForm(request.POST)
if form.is_valid():
title = form.cleaned_data['title']
content = form.cleaned_data['content']
username = User.objects.get(username=f"{request.user}")
new_post = Post(user=username, title=title, content=content, datetime=timezone.now())
new_post.writeOnChain()
cache.expire("cache", timeout=0)
return HttpResponseRedirect("/") # this line here
else:
我已经完成了 Django 文档中写的内容,并且尝试了几个 Youtube 教程,包括 Whosebug 的建议。但是,我无法使消息“验证错误”出现在模板上。当我单击按钮创建一个带有 bad_word 的 post 时,我重定向到同一页面,post 没有保存,但表单没有向我显示消息。我试图在视图中保存打印( form.errors ),终端显示了我想在模板中看到的消息。所以我不知道我做错了什么...
view.py
if request.method == "POST":
form = PostForm(request.POST)
if form.is_valid():
title = form.cleaned_data['title']
content = form.cleaned_data['content']
username = User.objects.get(username=f"{request.user}")
new_post = Post(user=username, title=title, content=content, datetime=timezone.now())
new_post.writeOnChain()
cache.expire("cache", timeout=0)
return HttpResponseRedirect("/")
else:
form = PostForm()
return render(request, "api/homepage.html", {'form': form, 'postList': postList})
forms.py
class PostForm(forms.ModelForm):
class Meta:
model = Post
fields = ('title', 'content',)
def clean_title(self):
title = self.cleaned_data['title']
if "bad_word" in title:
raise forms.ValidationError("Error")
return title
def clean_content(self):
content = self.cleaned_data['content']
if "bad_word" in content:
raise forms.ValidationError("Error")
return content
模板
<div class="p-3 forms m-3">
<form class="crispy" action="{% url 'homepage' %}" method="post">
{% csrf_token %}
{{ form|crispy }}
<input type="submit" class="btn buttons" value="Create Post">
</form>
</div>
终端打印
<ul class="errorlist"><li>content<ul> class="errorlist"><li>Error</li></ul> </li></ul>
如果您的表单无效,您总是会在没有表单信息的情况下重定向到“/”。您的 return redirect
需要与其余“有效”表单代码一起缩进。
if request.method == "POST":
form = PostForm(request.POST)
if form.is_valid():
title = form.cleaned_data['title']
content = form.cleaned_data['content']
username = User.objects.get(username=f"{request.user}")
new_post = Post(user=username, title=title, content=content, datetime=timezone.now())
new_post.writeOnChain()
cache.expire("cache", timeout=0)
return HttpResponseRedirect("/") # this line here
else: