From 27731a18b93fcea61fbcbc017c5087679224406b Mon Sep 17 00:00:00 2001
From: Mark Maglana <mmaglana@gmail.com>
Date: Fri, 6 Jun 2014 10:30:26 -0700
Subject: [PATCH] Define inflections only when they're not already defined
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This is so that Aviator doesn’t step on ActiveSupport’s toes in case
it’s already loaded into memory.

This is not the best solution since Aviator’s implementation may
diverge from ActiveSupport’s implementation at some point. For
now, this will have to do.

Change-Id: Iaf99d9499394c4a5ce1c0141f1a68492bb2f3191
---
 lib/aviator/string.rb | 26 ++++++++++++++++----------
 1 file changed, 16 insertions(+), 10 deletions(-)

diff --git a/lib/aviator/string.rb b/lib/aviator/string.rb
index 7efa2e1..25d24b6 100644
--- a/lib/aviator/string.rb
+++ b/lib/aviator/string.rb
@@ -1,18 +1,24 @@
 class String
 
-  def camelize
-    word = self.slice(0,1).capitalize + self.slice(1..-1)
-    word.gsub(/_([a-zA-Z\d])/) { "#{$1.capitalize}" }
-  end
-
-  def constantize
-    self.split("::").inject(Object) do |namespace, sym|
-      namespace.const_get(sym.to_s.camelize, false)
+  unless instance_methods.include? 'camelize'
+    define_method :camelize do
+      word = self.slice(0,1).capitalize + self.slice(1..-1)
+      word.gsub(/_([a-zA-Z\d])/) { "#{$1.capitalize}" }
     end
   end
 
-  def underscore
-    self.gsub(/([a-z\d])([A-Z])/, '\1_\2').downcase
+  unless instance_methods.include? 'constantize'
+    define_method :constantize do
+      self.split("::").inject(Object) do |namespace, sym|
+        namespace.const_get(sym.to_s.camelize, false)
+      end
+    end
+  end
+
+  unless instance_methods.include? 'underscore'
+    define_method :underscore do
+      self.gsub(/([a-z\d])([A-Z])/, '\1_\2').downcase
+    end
   end
 
 end