如何使用phoenix_html发布具有多个选择表单字段的ID集合 [英] How to post a collection of ids with multiple select form field with phoenix_html

问题描述

我正在尝试通过phoenix_html表单帮助程序进行多个选择

I’m trying to get multiple select to work with the phoenix_html form helpers

<%= select f, :challenge_ids, ["foo": "1","bar": "2","baz": "3"], class: "form-control", multiple: ""  %>

但只有最后选择的项目的ID会通过参数发送到服务器

but only the id of the last selected item gets sent to the server in the params

%{"challenge_ids" => "3", "content" => "", "name" => ""}

我也曾尝试将:challeng_ids更改为:"challenge_ids[]"，以尝试获得类似于多选择标签的rails输出的功能，但这并没有什么不同

I have also tried changing :challeng_ids to :"challenge_ids[]" trying to get something similar to a rails output for a multiple select tag, but this didn't make any difference

推荐答案

亚伦的用于添加多个选择的PR 已合并进入phoenix_html.这是multiple_select/4的 docs 中的示例，以防其他人偶然发现相同的内容问题:

Aaron's PR for adding multiple_select was merged into phoenix_html. Here's an example from the docs for multiple_select/4 in case someone else stumbled across the same problem:

# Assuming form contains a User model
multiple_select(form, :roles, ["Admin": 1, "Power User": 2])
#=> <select id="user_roles" name="user[roles][]">
    <option value="1">Admin</option>
    <option value="2">Power User</option>
    </select>

这篇关于如何使用phoenix_html发布具有多个选择表单字段的ID集合的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！