Ruby: How to convert a string to boolean
If you use Rails 5, you can do ActiveModel::Type::Boolean.new.cast(value)
.
In Rails 4.2, use ActiveRecord::Type::Boolean.new.type_cast_from_user(value)
.
The behavior is slightly different, as in Rails 4.2, the true value and false values are checked. In Rails 5, only false values are checked - unless the values is nil or matches a false value, it is assumed to be true. False values are the same in both versions:
FALSE_VALUES = [false, 0, "0", "f", "F", "false", "FALSE", "off", "OFF"]
Rails 5 Source: https://github.com/rails/rails/blob/5-1-stable/activemodel/lib/active_model/type/boolean.rb
def true?(obj)
obj.to_s.downcase == "true"
end