Rails4: collection_check_boxes from array - ruby-on-rails

Question

There is some way to serialize a collection_check_boxes from one constant?
Something like this:
# model
class tutorial < ActiveRecord::Base
serialize :option
TYPES = ["Option 1", "Option 2", "Option 3"]
end
# view
<%= form_for(#tutorial) do |b| %>
<%= f.collection_check_boxes(:option, Tutorial::TYPES, :id, :name) do |b| %>
<%= b.label class:"label-checkbox" do%>
<%=b.check_box + b.text%>
<%end%>
<% end %>
<% end %>
Or just:
<%= f.collection_check_boxes :option, Tutorial::TYPES, :id, :name %>
When I try both it I get the error:
undefined method `id' for "Option\t1":String
My permit parameters are already set with option: []
Someone did something like that before?
Thanks!

Answer 1

The definition is:
collection_check_boxes(method, collection, value_method, text_method, options = {}, html_options = {}, &block)`
The first one is a method to send, the second is a collection, the third is a method which is called to set an option value property, and the fourth is a method that is called to get a text and place it as a label for an option.
<%= f.collection_check_boxes :option, Tutorial::TYPES, :id, :name %>
There you are using Tutorial::TYPES (which is an array if strings) as a collection, and call id and name methods on each string.
Your collection should be Tutorial.all, and to get a label, you should implement a method on a Tutorial object for that, for example:
enum type: [
:type1,
:type2,
:type3,
]
And use it like this:
<%= f.collection_check_boxes :option, Tutorial.all, :id, :type %>