Rails / Simple Form - How to create a select box with HAML?

Question

What's the best way to add a select box with options and default value using Simple Form and HAML?

This is my _form.html.haml content and f.option not working.

= simple_form_for @post do |f|                                                                                                                                    
    = f.input :title       
    = f.input :body
    = f.label :category_id 
    = f.select :category_id, Category.all.map{|category| [category.name, category.id]}
    = f.option{value: "undefined"} 
    %br

= f.button :submit

Any help would be appreciated :)

Answer 1

  def get_select_data
    data = Category.all.map{ |category| [category.name, category.id] }
    data.push([.....])
  end

Probably put this in a service model. Initialize the model in your controller, and use it in your view:

= f.select :category_id, @service_model.get_select_data

Perhaps this will be an ok start for you