call controller method and return variable to view

Question

How can I call a method about a form?

I have 3 radio buttons and I want to call a method depending on which radio button is checked. After the call I have to return the controller a variable to the view.

How can I do that?

My approach:

I want use CSS do design my HTML. That is the reason why I haven't used a form helper:

<div id="cx" class="cxs">
  <form>
    <fieldset>
      <label>
        <input type="radio" id="cxId" name="checkBox"> ID
      </label>
      <label>
        <input type="radio" id="cxName" name="checkBox"> Name
      </label>
      <label>
        <input type="radio" id="cxArtikelnummer" name="checkBox"> Artikelnummer
      </label>
    </fieldset>
    <button type="button" id="cxBtn">Ok</button>
  </form>
</div>

Here I want to call a method depending on which radio button is checked (show by name, id or artikelnummer).

I have solved it stati, but the choose have to be dynamic and I thought do that with methods.

<% $i = 0 %>
  <% $num = @title.count %>
  <% @title.each do |row| %>
    Name: <%= row["Name"] %>
    Durchlauf: <%= $i %> <br>
  <% $i += 1 %>
<% end %>

sorry, title is initialised in my controller. "@title = data_array" title is an 2d array — Kev_Kev
– Kev_Kev, Commented May 3, 2017 at 13:52
you can set name as your method_name, and when selected you can call the corresponding method using send(method_name.to_sym). — Md. Farhan Memon
– Md. Farhan Memon, Commented May 3, 2017 at 13:56
"Here I want to call a method depending on which radio button is checked" did you consider to use JS to do what you want? — Sebastián Palma
– Sebastián Palma, Commented May 3, 2017 at 14:58

user7847273 · Accepted Answer · 2017-05-03 14:46:03Z

2

If @title represents a model in which there is for example "aaa" field of string type which can have the "ID" value, "Name" value and "Artikelnummer", try use this:

<% @title.each do |row| %>
      <% if row.aaa == "ID" %>
          #code for ID option
      <% elsif row.aaa == "Name" %>
          #code for Name option
      <% elsif row.aaa == "Artikelnummer %>
          #code for Artikelnummer option
      <% end %>
<% end %>

That is my idea. Tell me if it will help you.

But I think you can use form_for helper and radio_button helper inside with its :checked option and the whole form_for you can design via CSS via classes for every <li class="sth"><%= f.radio_button "Name", checked: true%></li> but I should check if this solution is right.

Rgds, Marta

answered May 3, 2017 at 14:46

user7847273

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1 Comment

Sebastián Palma Over a year ago

Bad thing is he's trying to do something when the radio button is checked. So isn't completelly a server side issue.

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