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The problem is this: I am showing some data to the user in a table and in it has a field of the numeric type that the user fills. However, I do not know how to send the value populated by the user as a parameter to the controller.

I've tried using the following syntax: 

<td><%= number_field :stock, params[:amount] %></td> ## HERE IS THE PROBLEM

<td><%= link_to 'Buy', new_transaction_path(stock: {stock_id: "#{stock[:id]}", buy_price: "#{stock[:value]}", amount: "#{params[:amount]}", transaction_type: 'buy'}), method: :post %></td>

I would like to pass the value that the user informed thought the number_field as a parameter to the controller, but it's not working..

Eduardo Humberto
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1 Answers1

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For your case "that the user fills", You have to user a form with a submit button, Here is a relate question, If the value is determined you can use link_to otherwise a form is better, Although sometimes I rely on JS or Jquery, I give the link_to a specific id and I give the input field and id too (HTML id), Then make an action listener on the the <a> that link_to generates, Once user click on it I get the data and submit the data.

The problem for the JS way is that if you are listing a table for more than one link_to for the product with multiple numeric_field you have to make sure that the id is unique, you can simply doing this by adding _#{id} part to the generated id.

Amr Adel
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