Ignore caching in controllers

currently when caching a method in a controller the parameter is ignored and returns the same result for all calls

.gitignore

@@ -25,3 +25,4 @@ grails-app/conf/BootStrap.groovy
 grails-app/conf/spring/
 grails-app/views/error.gsp
 grails-app/views/index.gsp
+bin/

grails-app/controllers/com/demo/DemoController.groovy

@@ -1,10 +1,17 @@
 package com.demo
 
+import grails.plugin.cache.Cacheable
+
 class DemoController {
 
 	def basicCachingService
 	def grailsCacheAdminService
 
+	@Cacheable('show')
+	def show (params) {
+		[param: params.id]
+	}
+
 	def clearBlocksCache() {
 		grailsCacheAdminService.clearBlocksCache()
 		render "cleared blocks cache"

grails-app/views/demo/show.gsp

@@ -0,0 +1 @@
+Hello World!${param}

src/ast/groovy/org/grails/plugin/cache/compiler/CacheableTransformation.groovy

@@ -53,6 +53,13 @@ class CacheableTransformation extends AbstractCacheTransformation {
     @Override
     protected Expression buildDelegatingMethodCall(SourceUnit sourceUnit, AnnotationNode annotationNode, ClassNode classNode, MethodNode methodNode, MethodCallExpression originalMethodCallExpr, BlockStatement newMethodBody) {
 
+        boolean isControllerClass = classNode.name.endsWith('Controller')
+        boolean isServiceClass = classNode.name.endsWith('Service')
+
+        if (isControllerClass && !isServiceClass) {
+            return originalMethodCallExpr
+        }
+
         VariableExpression cacheManagerVariableExpression = varX(GRAILS_CACHE_MANAGER_PROPERTY_NAME)
         handleCacheCondition(sourceUnit, annotationNode,  methodNode, originalMethodCallExpr, newMethodBody)
 

src/integration-test/groovy/com/demo/NotCachingControllerIntegrationSpec.groovy

@@ -0,0 +1,22 @@
+package com.demo
+
+import geb.spock.GebSpec
+import grails.testing.mixin.integration.Integration
+
+@Integration
+class NotCachingControllerIntegrationSpec extends GebSpec {
+
+    void 'test action controller with different parameters'() {
+        when:
+        go '/demo/show/1'
+
+        then:
+        $().text().contains 'Hello World!1'
+
+        when:
+        go '/demo/show/2'
+
+        then:
+        $().text().contains 'Hello World!2'
+    }
+}