Django-具有多个选择的下拉表单

问题描述

我需要构建Django 下拉列表 forms.Form 字段的指南，在其中可以选择多个选择。我需要在表单的办公室字段中选择多个位置。

提交后，表单需要返回所选办公室的列表（例如 [ New York， Los Angeles] 或 [奥斯丁] ）。返回 tuple 也可以。

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我能做到的最好现在要做的是为<$ c $构建一个

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但是，我希望此字段为下拉菜单，以减少页面上的空间。

我发现了这个，但是（ 1）少数人提到它似乎已经过时（我无法确认），并且（2）我首先要检查一个内置的django表单/窗口小部件安装程序是否可以完成此任务，然后再使用自定义代码。

解决方案

Dropdown框不支持HTML中的多选；浏览器将始终将其呈现为图像显示的平面框。

您可能想使用某种JS小部件-是一种流行的方法。有几个Django项目-，-旨在简化将其集成到表单中的过程；我对它们中的任何一个都没有经验。

（是的，就像Djangosnippets上的许多东西一样，该代码段已经过时； newforms重命名为表单（甚至在Django 1.0版之前）。

I need guidance building a django dropdown forms.Form field in which I can select multiple choices. I need to select multiple locations on the office field of the form.

When submitted, the form needs to return a list of the chosen offices (e.g. ["New York", "Los Angeles"] or ["Austin"]). Returning a tuple is also acceptable.

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The best I can do right now is build a multipleChoiceField for office with the following:

from django import forms

class my_Form(forms.Form):

    OPTIONS = [
        ("0", "*ALL"),
        ("1", "New York"),
        ("2", "Los Angeles"),
        ]

    office = forms.MultipleChoiceField(
            choices=OPTIONS,
            initial='0',
            widget=forms.SelectMultiple(),
            required=True,
            label='Office',
        )

resulting in this form field layout:

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However, I would like this field to be a dropdown, to take up less space on the page.

I found this djangosnippet but (1) a few people have mentioned it appears out of date (I can't confirm), and (2) I first want to check if a built-in django form/widget setup can fulfill this task before using custom code.

解决方案

"Dropdown" boxes don't support multiple selection in HTML; browsers will always render it as a flat box as your image shows.

You probably want to use some kind of JS widget - Select2 is a popular one. There are a couple of Django projects - django-select2, django-easy-select - that aim to make it simple to integrate that into your form; I have no experience with either of them.

(And yes, that snippet - like many things on Djangosnippets - is massively out of date; "newforms" was renamed to "forms" even before version 1.0 of Django.)

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