I'm trying to implement the rails-settings gem (https://github.com/100hz/rails-settings) into my Rails 3 project using Ruby 1.8.7
Setting and retrieving the settings works perfectly, but I get an error if I try getting all settings of a specific user.
So, in the 'rails console' the following works:
user = User.find(123)
user.settings.color = :red
user.settings.color
But if I try to get all settings:
user.settings.all
I get:
NoMethodError: undefined method `merge' for []:Array
from /[…]/.rvm/gems/ruby-1.8.7-p334/bundler/gems/rails-settings-883114dfd933/lib/rails-settings/settings.rb:55:in `all'
from (irb):5
line 55 in the settings.rb:
#retrieve all settings as a hash (optionally starting with a given namespace)
def self.all(starting_with=nil)
options = starting_with ? { :conditions => "var LIKE '#{starting_with}%'"} : {}
vars = thing_scoped.find(:all, {:select => 'var, value'}.merge(options))
result = {}
vars.each do |record|
result[record.var] = record.value
end
# line 55 is below this one...
@@defaults.select{ |k| k =~ /^#{starting_with}/ }.merge(result).with_indifferent_access
end
Whats the problem here? Or is this a ruby 1.8.7 vs. 1.9.2 thing?
Best Answer
That's a Ruby 1.8.7 vs. 1.9.2 thing
The Hash select method under ruby 1.8.7 will return an Array of Arrays.
Example:
While the same thing running Ruby 1.9.2 will return:
You will need to post process the result and turn it into a hsah again or use something like
inject
.Edit:
Here is a quick/ugly example of the
inject
Semantically speaking:
Edit 2: (Based on @CaleyWoods post)
The
|k, v|
will prevent unnecessary warnings.