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How to pass the value of input type radio in application_helper?
I am creating an admin template, and there is a customizer section in which I have created 3 radio buttons (named: Red, Blue, Green). There is a left sidebar navigation menu and I want to change the background color of sidebar navigation menu by clicking on the radio buttons. If I am clicking on the button it is changing the bg-color of sidebar navigation menu by adding a class, but if I am going to another page gets reloaded and the class gets removed.
I have tried one thing, in my application_helper.rb I have added the following code
def is_active(action) @color = "red" params[:action] == action_name ? @color : nil end
and in my layouts folder, I have a partial file _sidebar.html.erb and at the outer div I am using this helper like below
<div class="sidebar-nav <%= is_active('action_name') %>" id="collapse-sidebar" >
What I am doing here is, checking the action name if it is matching then adding a class red which is stored in an instance variable @color
If I can pass the value of the radio button to the application_helper file dynamically means if I click on red the value should be red, green then the value should be green. and by which I can change the class name dynamically in application helper and further that would change the color of the sidebar.
Please, If I am doing anything wrong or it's is not the right way to do this or we can't achieve this kind of functionality in ruby on rails, please acknowledge me, that would be appreciable.