Django ModelForm覆盖小部件 [英] Django ModelForm override widget

问题描述

免责声明：我是python和Django的初学者，但是有Drupal编程经验。

Disclaimer: I am a beginner with python and Django but have Drupal programming experience.

如何覆盖此默认控件：

#models.py
class Project(models.Model):
color_mode = models.CharField(max_length=50, null=True, blank=True, help_text='colors - e.g black and white, grayscale')

带有选择框的表格？是下面的命令还是我丢失了什么？

in my form with a select box? Is the following OK or am I missing something?

#forms.py
from django.forms import ModelForm, Select
class ProjectForm(ModelForm):
    class Meta:
        model = Project
        fields = ('title', 'date_created', 'path', 'color_mode')
        colors = (
                   ('mixed', 'Mixed (i.e. some color or grayscale, some black and white)'),
                   ('color_grayscale', 'Color / Grayscale'),
                   ('black_and_white', 'Black and White only'),
                   )
        widgets = {'color_mode': Select(choices=colors)}

阅读 https://docs.djangoproject.com/en/dev/topics/forms/modelforms/#overriding-the-default-field-types-or-widgets ，我迷路了因为该示例仅讨论了TextArea，而小部件的讨论似乎

After reading https://docs.djangoproject.com/en/dev/topics/forms/modelforms/#overriding-the-default-field-types-or-widgets, I am lost since the example only discusses TextArea and the widgets discussion seems to exclude ModelForm.

谢谢！

推荐答案

如果要覆盖一般而言，最好是在 ModelForm Meta 类的 widgets 属性中进行设置：

If you want to override the widget for a formfield in general, the best way is to set the widgets attribute of the ModelForm Meta class:

要为字段指定自定义窗口小部件，请使用内部Meta类的widgets属性。这应该是一个将字段名称映射到窗口小部件类或实例的字典。

To specify a custom widget for a field, use the widgets attribute of the inner Meta class. This should be a dictionary mapping field names to widget classes or instances.

例如，如果您希望Author的name属性的CharField用< textarea> 而不是默认的< input type = text> ，您可以覆盖该字段的小部件：

For example, if you want the a CharField for the name attribute of Author to be represented by a <textarea> instead of its default <input type="text">, you can override the field’s widget:

from django.forms import ModelForm, Textarea
from myapp.models import Author

class AuthorForm(ModelForm):
    class Meta:
        model = Author
        fields = ('name', 'title', 'birth_date')
        widgets = {
            'name': Textarea(attrs={'cols': 80, 'rows': 20}),
        }

窗口小部件字典接受窗口小部件实例（例如Textarea（...））或类（例如Textarea）。

The widgets dictionary accepts either widget instances (e.g., Textarea(...)) or classes (e.g., Textarea).

https：//docs.djangoproject.c om / en / dev / topics / forms / modelforms /＃overriding-the-default-fields

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