symbolize_keys method. fix for #33

Author: Erik Gustavson

lib/settingslogic.rb

@@ -10,7 +10,7 @@ class << self
     def name # :nodoc:
       self.superclass != Hash && instance.key?("name") ? instance.name : super
     end
-
+        
     # Enables Settings.get('nested.key.name') for dynamic access
     def get(key)
       parts = key.split('.')
@@ -167,7 +167,22 @@ def #{key}
       end
     EndEval
   end
-
+  
+  def symbolize_keys
+    
+    inject({}) do |memo, tuple|
+      
+      k = (tuple.first.to_sym rescue tuple.first) || tuple.first
+            
+      v = k.is_a?(Symbol) ? send(k) : tuple.last # make sure the value is accessed the same way Settings.foo.bar works
+      
+      memo[k] = v && v.respond_to?(:symbolize_keys) ? v.symbolize_keys : v #recurse for nested hashes
+      
+      memo
+    end
+    
+  end
+  
   def missing_key(msg)
     return nil if self.class.suppress_errors
 

spec/settingslogic_spec.rb

@@ -152,6 +152,23 @@ class NoSource < Settingslogic; end
   it "should allow a name setting to be overriden" do
     Settings.name.should == 'test'
   end
+  
+  it "should allow symbolize_keys" do
+    Settings.reload!
+    result = Settings.language.haskell.symbolize_keys 
+    result.class.should == Hash
+    result.should == {:paradigm => "functional"} 
+  end
+  
+  it "should allow symbolize_keys on nested hashes" do
+    Settings.reload!
+    result = Settings.language.symbolize_keys
+    result.class.should == Hash
+    result.should == {
+      :haskell => {:paradigm => "functional"},
+      :smalltalk => {:paradigm => "object oriented"}
+    }
+  end
 
   # Put this test last or else call to .instance will load @instance,
   # masking bugs.