Fixed that hashes was not working properly when passed by GET to ligh…

…ttpd #849 [Nicholas Seckar]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@1677 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Fixed that hashes was not working properly when passed by GET to lighttpd #849 [Nicholas Seckar]
+
 * Fixed assert_template nil will be true when no template was rendered #1565 [maceywj@telus.net]
 
 * Added :prompt option to FormOptions#select (and the users of it, like FormOptions#select_country etc) to create "Please select" style descriptors #1181 [Michael Schuerig]

actionpack/lib/action_controller/cgi_ext/cgi_methods.rb

@@ -17,20 +17,19 @@ def CGIMethods.parse_query_parameters(query_string)
         k = CGI.unescape(k) unless k.nil?
         v = CGI.unescape(v) unless v.nil?
 
-        if k =~ /(.*)\[\]$/
-          if parsed_params.has_key? $1
-            parsed_params[$1] << v
-          else
-            parsed_params[$1] = [v]
-          end
-        else
-          parsed_params[k] = v.nil? ? nil : v
+        keys = split_key(k)
+        last_key = keys.pop
+        last_key = keys.pop if (use_array = last_key.empty?)
+        parent = keys.inject(parsed_params) {|h, k| h[k] ||= {}}
+
+        if use_array then (parent[last_key] ||= []) << v
+        else parent[last_key] = v
         end
       }
 
       return parsed_params
     end
-  
+
     # Returns the request (POST/GET) parameters in a parsed form where pairs such as "customer[address][street]" / 
     # "Somewhere cool!" are translated into a full hash hierarchy, like
     # { "customer" => { "address" => { "street" => "Somewhere cool!" } } }
@@ -62,6 +61,23 @@ def self.parse_formatted_request_parameters(format, raw_post_data)
     end
 
   private
+
+    # Splits the given key into several pieces. Example keys are 'name', 'person[name]',
+    # 'person[name][first]', and 'people[]'. In each instance, an Array instance is returned.
+    # 'person[name][first]' produces ['person', 'name', 'first']; 'people[]' produces ['people', '']
+    def CGIMethods.split_key(key)
+      if /^([^\[]+)((?:\[[^\]]*\])+)$/ =~ key
+        keys = [$1]
+
+        keys.concat($2[1..-2].split(']['))
+        keys << '' if key[-2..-1] == '[]' # Have to add it since split will drop empty strings
+
+        return keys
+      else
+        return [key]
+      end
+    end
+
     def CGIMethods.get_typed_value(value)
       if value.respond_to?(:content_type) && !value.content_type.empty?
         # Uploaded file

actionpack/test/controller/cgi_test.rb

@@ -32,7 +32,16 @@ def test_query_string
       CGIMethods.parse_query_parameters(@query_string)
     )
   end
-
+
+  def test_deep_query_string
+    assert_equal({'x' => {'y' => {'z' => '10'}}}, CGIMethods.parse_query_parameters('x[y][z]=10'))
+  end
+
+  def test_deep_query_string_with_array
+    assert_equal({'x' => {'y' => {'z' => ['10']}}}, CGIMethods.parse_query_parameters('x[y][z][]=10'))
+    assert_equal({'x' => {'y' => {'z' => ['10', '5']}}}, CGIMethods.parse_query_parameters('x[y][z][]=10&x[y][z][]=5'))
+  end
+
   def test_query_string_with_nil
     assert_equal(
       { "action" => "create_customer", "full_name" => nil},
@@ -41,10 +50,10 @@ def test_query_string_with_nil
   end
 
   def test_query_string_with_array
-      assert_equal(
+    assert_equal(
       { "action" => "create_customer", "selected" => ["1", "2", "3"]},
       CGIMethods.parse_query_parameters(@query_string_with_array)
-      )
+    )
   end
 
   def test_query_string_with_amps