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如何为下拉菜单添加占位符

[英]How to add placeholder for drop down menu

原文 2014-02-08 09:30:41 0 1 ruby-on-rails

我需要下拉菜单的占位符文本（预定义一个“选择任何状态”）。以下是我的下拉菜单代码

<%= f.select :status,[[],['Created','Created'],['Deleted','Deleted'],
['Modified','Modified'],['Stored','Stored'],['Trained/Broken','Trained/Broken'],
['Unnecessary','Unnecessary']] %>

Ruby：1.9.3 Rails 3.2.13

提前致谢

1 个解决方案

您可以为此使用prompt ：

<%= f.select :status,[[],['Created','Created'],['Deleted','Deleted'],
['Modified','Modified'],['Stored','Stored'],['Trained/Broken','Trained/Broken'],
['Unnecessary','Unnecessary']], prompt: "Please Select" %>

如何在我的页面中添加下拉选择菜单

[英]how to add drop down select menu in my page in rails

从下拉菜单中选择或添加另一个

[英]Select from drop down menu or add another

如何使用javascript在头像上创建下拉菜单？

[英]How to create a drop down menu on avatar with javascript?

如何在表单中通过下拉菜单显示HABTM关系并选择添加更多内容？

[英]How do I present a HABTM relationship with a drop-down menu in a form and have an option to add more?

如何在Rails 3的索引视图中添加每页项下拉菜单？

[英]How to add an items per page drop down menu to index view in Rails 3?

如何在navbar上添加登录下拉菜单？

[英]How to add a Login drop down on navbar?

如何为页面添加简单的下拉菜单

[英]How to add a simple drop down in rails for pages

如何动态地向下拉列表中添加值

[英]how to dynamically add a value to a drop down in rails

Ruby on Rails-下拉菜单

[英]Ruby on Rails - Drop down menu

Ruby on Rails：下拉菜单

[英]Ruby on Rails: Drop down menu

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