A small blog item, for remembering this method...
When using a (normal) Hash in Ruby on Rails accessing an element with a symbol key or string key results in a different item.
Example
(Notice the use of a string and symbol to access a key)
1 2 | normal = {'foo'=>"lish"} normal[:foo] = 'bar' |
results in the hash:
1 | {"foo"=>"lish", :foo=>"bar"} |
To solve this issue you can convert every Hash to HashWithInDifferentAccess
1 2 | special = {'foo'=>'lish'}.with_indifferent_accessspecial[:foo] = 'bar' |
Results in
1 | {"foo"=>"bar"} |
1 | special.class => ActiveSupport::HashWithIndifferentAccess |
that more like it :-)