django表单验证字段相互存储，并独立验证其中一个字段_Django_Django Forms

django表单验证字段相互存储，并独立验证其中一个字段

django

django表单验证字段相互存储，并独立验证其中一个字段,django,django-forms,Django,Django Forms,我正在学习表单验证，如果我想在clean方法中同时验证name和money，似乎会出现很多错误，例如AttributeError、KeyError e、 g: 我的文件： forms.py： from django import forms from django.core.exceptions import ValidationError money_db = { 'Tom': 100, 'Jack': 200, 'Lucy': 300,

我正在学习表单验证，如果我想在clean方法中同时验证name和money，似乎会出现很多错误，例如AttributeError、KeyError

e、 g:

我的文件：

forms.py：

from django import forms
from django.core.exceptions import ValidationError

money_db = {
        'Tom': 100,
        'Jack': 200,
        'Lucy': 300,
        }
class ValidationForm(forms.Form):
    name = forms.CharField(required=True)
    money = forms.FloatField(required=True)

    def clean_name(self):
        name = self.cleaned_data.get('name').strip()
        if not name in ['Tom', 'Jack', 'Lucy']:
            raise ValidationError('No such person!')
        return name

    def clean(self):
        cleaned_data = self.cleaned_data
        name = cleaned_data.get('name').strip() # AttributeError here
        money = cleaned_data.get('money')
        if money > money_db[name]:
            raise ValidationError("You don't have so much money!")
        return cleaned_data

views.py：

from django.shortcuts import render_to_response
from django.template import RequestContext
from forms import ValidationForm

def form_validate(request, template='learn/form_validate.html'):
    form = ValidationForm()

    if request.GET:
        form = ValidationForm(request.GET)
        if form.is_valid():
            pass

    context = RequestContext(request,{
        'form': form,
    })
    return render_to_response(template, context)

html:

{%load staticfiles%}
{{form.errors}}
名称：{{form.Name}
货币：{{form.Money}}

您的

clean_name

函数只返回

name

，因此出现关键错误。您必须返回所有已清理的数据。查看此处

看起来您在

请求中不会获得任何数据。获取

使用

请求。发布

。

from django.shortcuts import render_to_response
from django.template import RequestContext
from forms import ValidationForm

def form_validate(request, template='learn/form_validate.html'):
    form = ValidationForm()

    if request.GET:
        form = ValidationForm(request.GET)
        if form.is_valid():
            pass

    context = RequestContext(request,{
        'form': form,
    })
    return render_to_response(template, context)

{% load staticfiles %}
<html>
    <body>
        <form action="">
            <div>{{form.errors}}</div>
            <div>Name: {{form.name}}</div>
            <div>Money: {{form.money}}</div>
            <input type="submit" value="Submit" />
        </form>
    </body>
</html>

def clean(self):
    cleaned_data = self.cleaned_data
    name = cleaned_data.get('name') # if name is invalid, it is None
    money = cleaned_data.get('money') # if money is invalid, it is None
    if name and money: # make sure they are valid
        if money > money_db[name]:
            raise ValidationError("You don't have so much money!")
    return cleaned_data