reverse new Bind* arguments to make them more in line with context be…

…st practices (context should be the first argument)

bind.go

@@ -31,7 +31,7 @@ type (
 )
 
 // BindRouteParams binds route params to bindable object
-func (b *DefaultBinder) BindRouteParams(i interface{}, c Context) error {
+func (b *DefaultBinder) BindRouteParams(c Context, i interface{}) error {
 	names := c.ParamNames()
 	values := c.ParamValues()
 	params := map[string][]string{}
@@ -45,7 +45,7 @@ func (b *DefaultBinder) BindRouteParams(i interface{}, c Context) error {
 }
 
 // BindQueryParams binds query params to bindable object
-func (b *DefaultBinder) BindQueryParams(i interface{}, c Context) error {
+func (b *DefaultBinder) BindQueryParams(c Context, i interface{}) error {
 	if err := b.bindData(i, c.QueryParams(), "query"); err != nil {
 		return NewHTTPError(http.StatusBadRequest, err.Error()).SetInternal(err)
 	}
@@ -57,7 +57,7 @@ func (b *DefaultBinder) BindQueryParams(i interface{}, c Context) error {
 // which parses form data from BOTH URL and BODY if content type is not MIMEMultipartForm
 // See non-MIMEMultipartForm: https://golang.org/pkg/net/http/#Request.ParseForm
 // See MIMEMultipartForm: https://golang.org/pkg/net/http/#Request.ParseMultipartForm
-func (b *DefaultBinder) BindBody(i interface{}, c Context) (err error) {
+func (b *DefaultBinder) BindBody(c Context, i interface{}) (err error) {
 	req := c.Request()
 	if req.ContentLength == 0 {
 		return
@@ -99,13 +99,13 @@ func (b *DefaultBinder) BindBody(i interface{}, c Context) (err error) {
 
 // Bind implements the `Binder#Bind` function.
 func (b *DefaultBinder) Bind(i interface{}, c Context) (err error) {
-	if err := b.BindRouteParams(i, c); err != nil {
+	if err := b.BindRouteParams(c, i); err != nil {
 		return err
 	}
-	if err = b.BindQueryParams(i, c); err != nil {
+	if err = b.BindQueryParams(c, i); err != nil {
 		return err
 	}
-	return b.BindBody(i, c)
+	return b.BindBody(c, i)
 }
 
 func (b *DefaultBinder) bindData(ptr interface{}, data map[string][]string, tag string) error {

bind_test.go

@@ -845,7 +845,7 @@ func TestDefaultBinder_BindBody(t *testing.T) {
 			}
 			b := new(DefaultBinder)
 
-			err := b.BindBody(bindTarget, c)
+			err := b.BindBody(c, bindTarget)
 			if tc.expectError != "" {
 				assert.EqualError(t, err, tc.expectError)
 			} else {