From 9bee4a8d4b5bd9eb9569b9525f345e1ed511f51f Mon Sep 17 00:00:00 2001
From: Ryan Bates <ryan@railscasts.com>
Date: Tue, 8 Mar 2011 23:19:56 -0800
Subject: [PATCH] adding any/all support for MetaWhere conditions

---
 .../model_adapters/active_record_adapter.rb    | 18 ++++++++++++++----
 .../active_record_adapter_spec.rb              | 17 +++++++++++++----
 2 files changed, 27 insertions(+), 8 deletions(-)

diff --git a/lib/cancan/model_adapters/active_record_adapter.rb b/lib/cancan/model_adapters/active_record_adapter.rb
index f29696a..22fb669 100644
--- a/lib/cancan/model_adapters/active_record_adapter.rb
+++ b/lib/cancan/model_adapters/active_record_adapter.rb
@@ -11,7 +11,17 @@ module CanCan
 
       def self.matches_condition?(subject, name, value)
         subject_value = subject.send(name.column)
-        case name.method.to_sym
+        if name.method.to_s.ends_with? "_any"
+          value.any? { |v| meta_where_match? subject_value, name.method.to_s.sub("_any", ""), v }
+        elsif name.method.to_s.ends_with? "_all"
+          value.all? { |v| meta_where_match? subject_value, name.method.to_s.sub("_all", ""), v }
+        else
+          meta_where_match? subject_value, name.method, value
+        end
+      end
+
+      def self.meta_where_match?(subject_value, method, value)
+        case method.to_sym
         when :eq      then subject_value == value
         when :not_eq  then subject_value != value
         when :in      then value.include?(subject_value)
@@ -20,9 +30,9 @@ module CanCan
         when :lteq    then subject_value <= value
         when :gt      then subject_value > value
         when :gteq    then subject_value >= value
-        when :matches then subject_value.downcase.include?(value.downcase)
-        when :does_not_match then !subject_value.downcase.include?(value.downcase)
-        else raise NotImplemented, "The #{name.method} MetaWhere condition is not supported."
+        when :matches then subject_value =~ Regexp.new("^" + Regexp.escape(value).gsub("%", ".*") + "$", true)
+        when :does_not_match then !meta_where_match?(subject_value, :matches, value)
+        else raise NotImplemented, "The #{method} MetaWhere condition is not supported."
         end
       end
 
diff --git a/spec/cancan/model_adapters/active_record_adapter_spec.rb b/spec/cancan/model_adapters/active_record_adapter_spec.rb
index db0fb18..21b61f9 100644
--- a/spec/cancan/model_adapters/active_record_adapter_spec.rb
+++ b/spec/cancan/model_adapters/active_record_adapter_spec.rb
@@ -231,6 +231,10 @@ if ENV["MODEL_ADAPTER"].nil? || ENV["MODEL_ADAPTER"] == "active_record"
       article1 = Article.new(:priority => 1, :name => "Hello World")
       adapter.matches_condition?(article1, :priority.eq, 1).should be_true
       adapter.matches_condition?(article1, :priority.eq, 2).should be_false
+      adapter.matches_condition?(article1, :priority.eq_any, [1, 2]).should be_true
+      adapter.matches_condition?(article1, :priority.eq_any, [2, 3]).should be_false
+      adapter.matches_condition?(article1, :priority.eq_all, [1, 1]).should be_true
+      adapter.matches_condition?(article1, :priority.eq_all, [1, 2]).should be_false
       adapter.matches_condition?(article1, :priority.ne, 2).should be_true
       adapter.matches_condition?(article1, :priority.ne, 1).should be_false
       adapter.matches_condition?(article1, :priority.in, [1, 2]).should be_true
@@ -245,10 +249,15 @@ if ENV["MODEL_ADAPTER"].nil? || ENV["MODEL_ADAPTER"] == "active_record"
       adapter.matches_condition?(article1, :priority.gt, 1).should be_false
       adapter.matches_condition?(article1, :priority.gteq, 1).should be_true
       adapter.matches_condition?(article1, :priority.gteq, 2).should be_false
-      adapter.matches_condition?(article1, :name.like, "ello worl").should be_true
-      adapter.matches_condition?(article1, :name.like, "helo").should be_false
-      adapter.matches_condition?(article1, :name.nlike, "helo").should be_true
-      adapter.matches_condition?(article1, :name.nlike, "ello worl").should be_false
+      adapter.matches_condition?(article1, :name.like, "%ello worl%").should be_true
+      adapter.matches_condition?(article1, :name.like, "hello world").should be_true
+      adapter.matches_condition?(article1, :name.like, "hello%").should be_true
+      adapter.matches_condition?(article1, :name.like, "h%d").should be_true
+      adapter.matches_condition?(article1, :name.like, "%helo%").should be_false
+      adapter.matches_condition?(article1, :name.like, "hello").should be_false
+      adapter.matches_condition?(article1, :name.like, "hello.world").should be_false
+      adapter.matches_condition?(article1, :name.nlike, "%helo%").should be_true
+      adapter.matches_condition?(article1, :name.nlike, "%ello worl%").should be_false
     end
   end
 end