From 285ad9bdc123cdc83480441d86ae9a3e083b17e7 Mon Sep 17 00:00:00 2001
From: NyanKiyoshi <NyanKiyoshi@users.noreply.github.com>
Date: Fri, 26 Jan 2018 21:13:43 +0100
Subject: [PATCH] No longer raising a missing parameter when value is null

When passing a null value as parameter (ex.: 0, None or False), Sanic said "Error: Required parameter `param` was not passed to url_for"

Example:

```
@app.route("/<idx>")
def route(rq, idx):
    pass
```

```
url_for("route", idx=0)
```

No longer raises: `Error: Required parameter `idx` was not passed to url_for`
---
 sanic/app.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sanic/app.py b/sanic/app.py
index a81bb4a8..6e8377f5 100644
--- a/sanic/app.py
+++ b/sanic/app.py
@@ -495,7 +495,7 @@ class Sanic:
             specific_pattern = '^{}$'.format(pattern)
             supplied_param = None
 
-            if kwargs.get(name):
+            if name in kwargs:
                 supplied_param = kwargs.get(name)
                 del kwargs[name]
             else: