Do not extend Object.

Author: ebeigarts

lib/active_admin/arbre.rb

@@ -1,5 +1,4 @@
 require "active_admin/arbre/builder"
-require "active_admin/arbre/core_extensions"
 require "active_admin/arbre/context"
 require "active_admin/arbre/html/element"
 require "active_admin/arbre/html/attributes"

lib/active_admin/arbre/core_extensions.rb

@@ -27,7 +27,7 @@ def tag_name
       end
 
       def to_html
-        ERB::Util.html_escape(@content.to_html)
+        ERB::Util.html_escape(@content.to_s)
       end
     end
 

lib/active_admin/arbre/html/text_node.rb

@@ -96,7 +96,7 @@
       it "should html escape the string" do
         string = "Goodbye <br />"
         element.content = string
-        element.content.to_html.should == "Goodbye &lt;br /&gt;"
+        element.to_html.should == "Goodbye &lt;br /&gt;"
       end
     end