Django 表单:将参数传递给表单 [英] Django Forms: pass parameter to form

问题描述

如何向表单传递参数?

someView()..
    form = StylesForm(data_dict) # I also want to pass in site_id here.

class StylesForm(forms.Form):
    # I want access to site_id here

推荐答案

您应该定义表单的 __init__ 方法，如下所示:

You should define the __init__ method of your form, like that:

class StylesForm(forms.Form):
    def __init__(self,*args,**kwargs):
        self.site_id = kwargs.pop('site_id')
        super(StylesForm,self).__init__(*args,**kwargs)

当然在创建对象之前你不能访问 self.site_id，所以行:

of course you cannot access self.site_id until the object has been created, so the line:

     height = forms.CharField(widget=forms.TextInput(attrs={'size':site_id}))

没有意义.创建表单后，您必须将属性添加到小部件.尝试这样的事情:

makes no sense. You have to add the attribute to the widget after the form has been created. Try something like this:

class StylesForm(forms.Form):
    def __init__(self,*args,**kwargs):
        self.site_id = kwargs.pop('site_id')
        super(StylesForm,self).__init__(*args,**kwargs)
        self.fields['height'].widget = forms.TextInput(attrs={'size':site_id})

    height = forms.CharField()

(未测试)

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