Simple Fields in Rails

Question

I have written this line in my show.html.erb of Person model.

 <%= f.simple_fields_for :holidays do |holiday| %>
   <%= holiday.input :number,
                     :label => holiday.day.name,
                     :input_html=>{
                       :required => false
                     } %>

I have two questions :

1. What does holiday mean here. I mean what does it contain?

2. :label => holiday.day.name line gives an error => undefined method day.

There is a join table holidays which contains (person_id, day_id, number).

Answer 1

holiday is form builder object.

To get the object which is wrapped inside a form builder object, you need to call the object method on it. The below will work.

holiday.object.day.name

Answer 2

I am assuming that you have holidays association in Person model:

1. holiday here is same as f in <%= form_for @person do |f| %>, which is a form builder object.

2. The error occurs because holiday itself is not an instance of the model, but a form builder object. So you shall need to do something like holiday.object.name