我在编码 django 时遇到错误问题，不显示验证错误 我不知道为什么 django 不显示验证错误。你能帮忙吗？这是我的 form.py 文件， 这是我的表单文件，其中包含 form 和 validation 。django import formsfrom django.core import validatorsfrom new_app.models import Names``from django.shortcuts import renderfrom django.http import HttpResponseclass Forms(forms.ModelForm):FirstName = forms.CharField(label='FirstName',widget=forms.TextInput(attrs={"placeholder":"your Name","rows":20,"column":100})) class Meta(): model = Names fields = '__all__' def clean(self): all_data = super().clean() firstname= all_data['FirstName'] lastname = all_data['LastName'] a = 1 if firstname in lastname: raise forms.ValidationError("amazing") return all_data这是我的 view.py 文件 这是我的视图文件from django.shortcuts import renderfrom new_app.models import Namesfrom new_app import formssfrom django import forms# Create your views here.def index(request): a = Names.objects.all() dict = {'write':a}return render(request , 'index.html', context = dict)def 寄存器（请求）：second = formss.Forms()if request.method == 'POST': form = formss.Forms(request.POST) if form.is_valid(): form.save(commit=True) return index(request) else: second = formss.Forms()return render (request , 'forms.html', context = {'form':second} )这是我的 form.html 模板文件... <!DOCTYPE html><html dir="ltr"> <head> <meta charset="utf-8"> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css"> <title>Login or Sign up</title> </head> <body> <div class="container"> <div class="jumbotron"> <h1> Sign up</h1> </div> </div> <div class="container"> <div class="first"> <form class="form-horizontal" method="post"> {{form.as_p}} {% csrf_token%} <input type="submit" class="btn btn-primary" value="Submit"> </form> </div> </div> </body></html>
1 回答
鸿蒙传说
TA贡献1865条经验 获得超7个赞
您需要将错误标签添加到模板中才能查看验证错误：
{% if form.errors %}
{% for field in form %}
{% for error in field.errors %}
<div class="alert alert-danger">
<strong>{{ error }}</strong>
</div>
{% endfor %}
{% endfor %}
{% for error in form.non_field_errors %}
<div class="alert alert-danger">
<strong>{{ error }}</strong>
</div>
{% endfor %}
{% endif %}
您还需要确保呈现原始完成的表单，以便显示错误。
def register(request):
if request.method == 'GET':
form = formss.Forms()
if request.method == 'POST':
form = formss.Forms(request.POST)
if form.is_valid():
form.save(commit=True)
return index(request)
return render (request , 'forms.html', context = {'form':form} )
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