如何从Ruby上的控制器Rails获取表单字段的值

Question

On Project new view I have a form with text_field

  <%= form_for @project do |f| %>

    <h4>
                    <label for = "projectName">Title(required)</label>

                    <%= f.text_field :projectName, :maxlength => 50 %>
                </h4>
<%end%>

I am trying to get the values on controller by,

params[:projectName]

But I always get nil on my logs for this

Note

My project resides in com/a/b/c/project

Therefore I tried calling

params[:com_a_b_c_projectName]

Still get nil on my logs

Any help would be great!

Answer 1

the rails convention is, it automatically wrap the params in form. so it should be params[:project][:projectName] . read details here in chapter 7.1

Answer 2

If you are using rails 4 or above then make sure params.require is set in the controller to accept parameters from view.

Once it's set you can find the params in params[:project][:projectName] . Also make a submit button ( <%= f.submit %> ) to submit the params in controller.