更改字段名称django在显示窗体错误消息时使用 [英] changing the field name django uses when display form error messages

问题描述

好吧，所以我有一个表格，然后在模板中，我有这个代码：

  {％if form.errors ％} 
 {form.errors％} 
 {％endif％} 
  

现在，假设我的表单中有一个用户名字段，这是必需的，我故意不填写。它会说

 用户名
  - 此字段为必需
  

如何更改在显示错误信息的字段时显示的username一词？我猜这是从我创建的模型中取名，因为在模型中（我曾经写过一个表单）我写了

  username = models.CharField（max_length = 10）
 first_name = models.CharField（max_length = 20）
  

如您所见，如果first_name字段有错误，则django将显示

  first_name 
  -  *错误消息* 
  

如何使其显示名字的first_name？

解决方案

如果你想把一些自定义消息给你的错误，你可能想修改干净的方法您的表单。

例如：

  class Form（forms。 ModelForm）：
 class Meta：
 model = User #Assuming User是您的模型的名称
 fields = ['username'，'first_name'] 
 
 def clean_first_name（self）：
 if condition： ＃一个必须引发错误的条件
 raise forms.ValidationError（u'你的自定义验证错误在这里。）
 return self.cleaned_data ['first_name'] 
  

但是，如果您只想更改出现在默认错误消息中的名称，您可以在字段中放置一个详细的名称，如： / p>

  username = models.CharField（max_length = 10，verbose_name =Username）
 first_name = models.CharField（max_length = 20，verbose_name =名字）
  

或隐式：

  username = models.CharField（Username，max_length = 10）
 first_name = models.CharField（First Name，max_length = 20）
  

要查看有关django表单和字段验证的更多信息： https://docs.djangoproject.com/en/1.5/ref/forms/validation/#形状和音响密码验证

关于覆盖默认表单错误消息：
Django覆盖默认表单错误消息

和

http://davedash.com / 2008/11/28 / custom-error-messages-for-django-forms /

Okay so I have a form and then in the template, I have this code:

{% if form.errors %}
    { form.errors %}
{% endif %}

Now, suppose I have a username field in my form which is required and I purposely do not fill it out. It would say

username
    -This field is required

How do I change the word "username" which it displays when telling what field the error message is for? I'm guessing it is taking the name from the Model I created because in the model (which I then made a form of) I had written

username = models.CharField(max_length=10)
first_name = models.CharField(max_length=20)

As you can see, if there is an error with the first_name field, it django would display

first_name
    - *error message*

How would I make it display "First Name" instead of "first_name"?

解决方案

If you want to put some custom messages to your erros you may want to modify the clean method of your formfields.

For example:

class Form(forms.ModelForm):
    class Meta:
        model = User #Assuming User is the name of your model
        fields = ['username','first_name']

    def clean_first_name(self):
        if condition: # A condition that must raise an error
            raise forms.ValidationError(u'Your Custom Validation Error goes here.')
        return self.cleaned_data['first_name']

But if you just want to change the name that appears in a default error message you can put a verbose name in your fields, just like:

username = models.CharField(max_length=10, verbose_name="Username")
first_name = models.CharField(max_length=20, verbose_name="First Name")

or implicit:

username = models.CharField("Username", max_length=10)
first_name = models.CharField("First Name",max_length=20)

To see more about django form and field validation: https://docs.djangoproject.com/en/1.5/ref/forms/validation/#form-and-field-validation

About Override default Form error messages: Django override default form error messages

and

http://davedash.com/2008/11/28/custom-error-messages-for-django-forms/

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