Implement exclusion of types. Fixes qpowell#7

README.rdoc

@@ -53,15 +53,23 @@ Then retrieve a list of spots:
 Search by a specific type:
 
   @client.spots(-33.8670522, 151.1957362, :types => 'restaurant')
-	
+
 Search by multiple types:
 
   @client.spots(-33.8670522, 151.1957362, :types => ['restaurant','food'])
-
+
+Search by multiple types but exclude one type:
+
+  @client.spots(-33.8670522, 151.1957362, :types => ['restaurant','food'], :exclude => 'cafe')
+
+Search by multiple types but exclude multiple types:
+
+  @client.spots(-33.8670522, 151.1957362, :types => ['restaurant','food'], :exclude => ['cafe', 'establishment'])
+
 Search by name:
 
   @client.spots(-33.8670522, 151.1957362, :name => 'italian')
-	
+
 Search by name *and* type:
 
   @client.spots(-33.8670522, 151.1957362, :name => 'italian', :types => 'restaurant')

lib/google_places/spot.rb

@@ -8,6 +8,9 @@ def self.list(lat, lng, api_key, options = {})
       types  = options.delete(:types)
       name  = options.delete(:name)
       location = Location.new(lat, lng)
+      exclude = options.delete(:exclude) || []
+
+      exclude = [exclude] unless exclude.is_a?(Array)
 
       options = {
         :location => location.format,
@@ -25,8 +28,8 @@ def self.list(lat, lng, api_key, options = {})
 
       response = Request.spots(options)
       response['results'].map do |result|
-        self.new(result)
-      end
+        self.new(result) if (result['types'] & exclude) == []
+      end.compact
     end
 
     def self.find(reference, api_key, options = {})

spec/google_places/spot_spec.rb

@@ -92,6 +92,28 @@
         end
       end
     end
+
+    describe 'searching by types with exclusion' do
+      use_vcr_cassette 'list_spots_with_types_and_exclusion'
+
+      it 'should exclude spots with type "restaurant"' do
+        @collection = GooglePlaces::Spot.list(@lat, @lng, api_key, :radius => @radius, :sensor => @sensor, :types => ['food','establishment'], :exclude => 'restaurant')
+
+        @collection.map(&:types).each do |types|
+          types.should_not include('restaurant')
+        end
+      end
+
+      it 'should exclude spots with type "restaurant" and "cafe"' do
+        @collection = GooglePlaces::Spot.list(@lat, @lng, api_key, :radius => @radius, :sensor => @sensor, :types => ['food','establishment'], :exclude => ['restaurant', 'cafe'])
+
+        @collection.map(&:types).each do |types|
+          types.should_not include('restaurant')
+          types.should_not include('cafe')
+        end
+      end
+    end
+
   end
 
   context 'Find a single spot' do