From f3dcdd778b98bb4d415eea339c1019feac856236 Mon Sep 17 00:00:00 2001
From: Nate Hunzaker <nate.hunzaker@gmail.com>
Date: Sat, 28 Jun 2014 12:42:22 -0400
Subject: [PATCH] [fixed] injectParams invariant should not throw on values
 that coerce to false.

---
 modules/helpers/Path.js | 2 +-
 specs/Path.spec.js      | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/modules/helpers/Path.js b/modules/helpers/Path.js
index 6d13a2dbff..deefa95c7b 100644
--- a/modules/helpers/Path.js
+++ b/modules/helpers/Path.js
@@ -85,7 +85,7 @@ var Path = {
       var paramName = getParamName(pathSegment);
 
       invariant(
-        params[paramName],
+        params[paramName] != null,
         'Missing "' + paramName + '" parameter for path "' + pattern + '"'
       );
 
diff --git a/specs/Path.spec.js b/specs/Path.spec.js
index ceaf2b6a1a..0c2bf6ca7d 100644
--- a/specs/Path.spec.js
+++ b/specs/Path.spec.js
@@ -127,6 +127,10 @@ describe('Path.injectParams', function () {
       it('returns the correct path', function () {
         expect(Path.injectParams(pattern, { id: 'abc' })).toEqual('comments/abc/edit');
       });
+
+      it('returns the correct path when the value is 0', function () {
+        expect(Path.injectParams(pattern, { id: 0 })).toEqual('comments/0/edit');
+      });
     });
 
     describe('and some params have special URL encoding', function () {