submit(value=nil, options={}) public

Add the submit button for the given form. When no value is given, it checks if the object is a new resource or not to create the proper label: 

  <%= form_for @post do |f| %>
    <%= f.submit %>
  <% end %>

In the example above, if @post is a new record, it will use "Create Post" as submit button label, otherwise, it uses "Update Post".

Those labels can be customized using I18n, under the helpers.submit key and accept the %{model} as translation interpolation: 

  en:
    helpers:
      submit:
        create: "Create a %{model}"
        update: "Confirm changes to %{model}"

It also searches for a key specific for the given object: 

  en:
    helpers:
      submit:
        post:
          create: "Add %{model}"
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June 21, 2011 - (v3.0.0 - v3.0.9)
3 thanks

Clear form

for clear a form, use this:

<%= f.submit "clear", :type => "reset" %>
March 10, 2009
1 thank

Image as a submit button

use image_sugmit_tag to use an image as a submit button

September 22, 2010
1 thank

About the options argument

The options are not documented, but of course you can use the same options than submit_tag.

Note that all non-documented options are simply passed to the input tag. Amongst other things, this allows you to change the default name attribute (commit):

form.submit 'Cancel', :name => 'cancel'

That’s very handy in forms with multiple submit buttons, this way the controller can easily check in the params which action was submitted.

November 8, 2013
0 thanks

submit button with rails javascript's onclick event handler method

Code example

<%= f.submit ‘Create User’, class: ‘buttons’, :onclick => “validate_user_form_and_submit()” %>

April 5, 2021 - (v6.0.0 - v6.1.3.1)
0 thanks

Access just the label text

One of the handiest features of `f.submit` is the auto-generated label text.

Some styling frameworks don’t lend themselves to using `f.submit` without lots of tweaking.

If you’re not using `f.submit` but still want to access the label text, note that there is a private method:

f.send(:submit_default_value)

One example (in Haml, using MaterializeCss):

.row
  .col.s6.center
    %button{ type: 'submit', name: 'commit', data: { disable: { with: 'Submitting...' } }, class: 'waves-effect waves-light btn maroon' }
      = f.send(:submit_default_value)