How to set common field with default value in each view in ruby on rails?

Question

I am new to RubyOnRails I want to set a common field for each view in ruby.

I am using Rails 4.0.0, I have set a global variable in controller.

VERSION = "1000"

I want to set a version field in each view.

<%= simple_form_for(@rebate, html: {class: "form-horizontal"}) do |f| %>
  <div class="field">
    <%= f.label :version %><br>
    <%= f.text_field, version, :html_input=>{:value=>ApplicationController::VERSION} %>
  </div>
  <div class="field">
    <%= f.label :first_name %><br>
    <%= f.text_field :first_name %>
  </div>
  <div class="field">
    <%= f.label :last_name %><br>
    <%= f.text_field :last_name %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

I don't want to store this version field in database, but I want use this version field in each view. I want to check that value in controller while submitting the view. But I dont know how to set the common value for each view. For the above code I'm getting the error -

syntax error, unexpected tASSOC, expecting tCOLON2 or '[' or '.'

Please help me, so that I can set common field in each view.

Answer 1

<%= text_field_tag :version, ApplicationController::VERSION %>

Answer 2

Replace

## Notice comma after f.text_field that is causing error
<%= f.text_field, version, :html_input=>{:value=>ApplicationController::VERSION} %> 

with

<%= f.text_field :version, :html_input=>{:value=>ApplicationController::VERSION} %>

By setting constant VERSION in ApplicationController, you would be able to access it in views,like the way you are doing.