From df759b8d4b9ab676e44482c05bc1f302dcb74a6e Mon Sep 17 00:00:00 2001
From: Pawel Kozlowski <pkozlowski.opensource@gmail.com>
Date: Thu, 23 Jun 2016 17:51:39 +0200
Subject: [PATCH] fix(core): improve error message for broken bindings

Fixes #6820

Closes #9536
---
 modules/@angular/compiler/src/template_parser.ts       | 4 ++--
 modules/@angular/compiler/test/template_parser_spec.ts | 6 +++---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/modules/@angular/compiler/src/template_parser.ts b/modules/@angular/compiler/src/template_parser.ts
index 40361534b1..4d657fa884 100644
--- a/modules/@angular/compiler/src/template_parser.ts
+++ b/modules/@angular/compiler/src/template_parser.ts
@@ -824,7 +824,7 @@ class TemplateParseVisitor implements HtmlAstVisitor {
     }
     elementProps.forEach(prop => {
       this._reportError(
-          `Property binding ${prop.name} not used by any directive on an embedded template`,
+          `Property binding ${prop.name} not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the "directives" section.`,
           sourceSpan);
     });
   }
@@ -840,7 +840,7 @@ class TemplateParseVisitor implements HtmlAstVisitor {
     events.forEach(event => {
       if (isPresent(event.target) || !SetWrapper.has(allDirectiveEvents, event.name)) {
         this._reportError(
-            `Event binding ${event.fullName} not emitted by any directive on an embedded template`,
+            `Event binding ${event.fullName} not emitted by any directive on an embedded template. Make sure that the event name is spelled correctly and all directives are listed in the "directives" section.`,
             event.sourceSpan);
       }
     });
diff --git a/modules/@angular/compiler/test/template_parser_spec.ts b/modules/@angular/compiler/test/template_parser_spec.ts
index e5c62ca1cc..c09c59ca3f 100644
--- a/modules/@angular/compiler/test/template_parser_spec.ts
+++ b/modules/@angular/compiler/test/template_parser_spec.ts
@@ -1220,9 +1220,9 @@ More than one component: DirB,DirA ("[ERROR ->]<div>"): TestComp@0:0`);
            });
            expect(() => parse('<template [a]="b" (e)="f"></template>', [dirA]))
                .toThrowError(`Template parse errors:
-Event binding e not emitted by any directive on an embedded template ("<template [a]="b" [ERROR ->](e)="f"></template>"): TestComp@0:18
+Event binding e not emitted by any directive on an embedded template. Make sure that the event name is spelled correctly and all directives are listed in the "directives" section. ("<template [a]="b" [ERROR ->](e)="f"></template>"): TestComp@0:18
 Components on an embedded template: DirA ("[ERROR ->]<template [a]="b" (e)="f"></template>"): TestComp@0:0
-Property binding a not used by any directive on an embedded template ("[ERROR ->]<template [a]="b" (e)="f"></template>"): TestComp@0:0`);
+Property binding a not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the "directives" section. ("[ERROR ->]<template [a]="b" (e)="f"></template>"): TestComp@0:0`);
          });
 
       it('should not allow components or element bindings on inline embedded templates', () => {
@@ -1234,7 +1234,7 @@ Property binding a not used by any directive on an embedded template ("[ERROR ->
         });
         expect(() => parse('<div *a="b"></div>', [dirA])).toThrowError(`Template parse errors:
 Components on an embedded template: DirA ("[ERROR ->]<div *a="b"></div>"): TestComp@0:0
-Property binding a not used by any directive on an embedded template ("[ERROR ->]<div *a="b"></div>"): TestComp@0:0`);
+Property binding a not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the "directives" section. ("[ERROR ->]<div *a="b"></div>"): TestComp@0:0`);
       });
     });