django - 覆盖 Django 1.6 中的 ModelForm 字段错误消息

Question

hjwp的精彩Test-Driven Development with Python book演示重写 chapter 11 中的默认 ModelForm 字段错误消息:

from django import forms

from lists.models import Item

class ItemForm(forms.models.ModelForm):

    class Meta:
        [...]


    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        empty_error = "You can't have an empty list item"
        self.fields['text'].error_messages['required'] = empty_error

但随后宣称(这是一项正在进行的工作)...

Django 1.6 has a simpler way of overriding field error messages. I haven’t had time to implement it yet, but you should feel free to look it up and use it!

事实证明，这是一个非常难以查找的主题，我希望能为其他人节省时间。更简单的方法是什么？

Answer 1

来自Django 1.6 release notes :

ModelForm accepts several new Meta options.

• Fields included in the localized_fields list will be localized (by setting localize on the form field).
• The labels, help_texts and error_messages options may be used to customize the default fields, see Overriding the default fields for details.

从那开始:

class AuthorForm(ModelForm):
    class Meta:
        model = Author
        fields = ('name', 'title', 'birth_date')
        labels = {
            'name': _('Writer'),
        }
        help_texts = {
            'name': _('Some useful help text.'),
        }
        error_messages = {
            'name': {
                'max_length': _("This writer's name is too long."),
            },
        }

相关:Django's ModelForm - where is the list of Meta options?