Support default value for placeholders in route's path.

If a route is created with a Default:

   &Route{
        Path: "/user/:id",
        Defaults: map[string]string{
                  "id": "1",
        },
        ...
   }

a request for /user/ will match the route, and set the value for "id" to
1.  However, the route /user will not match.

1 files changed, 9 insertions, 2 deletions

diff --git a/route.go b/route.go
index 9eab0ab..a33a78f 100644
--- a/route.go
+++ b/route.go
@@ -12,12 +12,13 @@ type Route struct {
 	Method                  string
 	Path                    string
 	Code                    fn
+	Validations             map[string]*regexp.Regexp
+	Defaults                map[string]string
 	components              []string
 	requiredNamedComponents map[string]bool
 	optionalNamedComponents map[string]bool
 	length                  int
 	lengthWithoutOptional   int
-	Validations             map[string]*regexp.Regexp
 }
 
 type Match struct {
@@ -55,7 +56,13 @@ func (self *Route) Match(method string, components []string) *Match {
 		return nil
 	}
 
-	mapping := map[string]string{}
+	var mapping map[string]string
+
+	if self.Defaults != nil {
+		mapping = self.Defaults
+	}else{
+		mapping = map[string]string{}
+	}
 
 	currentComponentsLength := len(components)