javascript rails - 如何将 onsubmit 与 form_tag 一起使用
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rails - How to use onsubmit with form_tag
提问by Yonggoo Noh
I want to convert below code to form_foror form_tag.
我想将下面的代码转换为form_for或form_tag。
<form onsubmit="foo()">
What should I do? I don't want to connect another page(action="/URL").
我该怎么办？我不想连接另一个页面（action="/URL"）。
I just want function foo()to fire when this form is submitted.
我只想function foo()在提交此表单时触发。
回答by Jeff K
This should be easy to do with either form_tagor form_for. Example:
使用form_tag或应该很容易做到这一点form_for。例子：
<%= form_for @model, :html => { :onsubmit => "foo()" } %>
<% end %>
or
或者
<%= form_tag '#', :html => { :onsubmit => "foo()" } %>
<% end %>
回答by Ryan K
This would be much easier with form_tagthan form_for. Try this:
使用form_tag比这会容易得多form_for。试试这个：
<%= form_tag '#', onsubmit: "foo();" do %>
<% end %>
Also, don't forget that within foo(), it should return falseso that the form doesn't actually submit!
另外，不要忘记在 内foo()，它应该return false使表单实际上不会提交！
回答by Richard Peck
You'll be better putting the foo();function into the unobtrusiveasset pipeline in Rails:
您会更好地将该foo();功能放入Rails 中不显眼的资产管道中：
#app/assets/javascripts/application.js
var foo = function(e) {
e.preventDefault();
...
};
$(document).on("submit", "#form", foo(e));
You can accompany this with ...
你可以伴随着...
<%= form_tag "#", id: "form" do %>
