feat: Added Params.GetInt method & Context.ParamInt method

context.go

@@ -412,6 +412,17 @@ func (c *Context) Param(key string) string {
 	return c.Params.ByName(key)
 }
 
+// ParamInt returns the value of the URL param as an int.
+// It is a shortcut for c.Params.GetInt(key)
+//
+//	router.GET("/user/:id", func(c *gin.Context) {
+//	    // a GET request to /user/32
+//	    id := c.Param("id") // id == "32"
+//	})
+func (c *Context) ParamInt(key string) int {
+	return c.Params.GetInt(key)
+}
+
 // AddParam adds param to context and
 // replaces path param key with given value for e2e testing purposes
 // Example Route: "/user/:id"

routes_test.go

@@ -683,13 +683,13 @@ func TestRouteRawPath(t *testing.T) {
 
 	route.POST("/project/:name/build/:num", func(c *Context) {
 		name := c.Params.ByName("name")
-		num := c.Params.ByName("num")
+		num := c.Params.GetInt("num")
 
 		assert.Equal(t, name, c.Param("name"))
-		assert.Equal(t, num, c.Param("num"))
+		assert.Equal(t, num, c.ParamInt("num"))
 
 		assert.Equal(t, "Some/Other/Project", name)
-		assert.Equal(t, "222", num)
+		assert.Equal(t, 222, num)
 	})
 
 	w := PerformRequest(route, http.MethodPost, "/project/Some%2FOther%2FProject/build/222")
@@ -703,13 +703,13 @@ func TestRouteRawPathNoUnescape(t *testing.T) {
 
 	route.POST("/project/:name/build/:num", func(c *Context) {
 		name := c.Params.ByName("name")
-		num := c.Params.ByName("num")
+		num := c.Params.GetInt("num")
 
 		assert.Equal(t, name, c.Param("name"))
-		assert.Equal(t, num, c.Param("num"))
+		assert.Equal(t, num, c.ParamInt("num"))
 
 		assert.Equal(t, "Some%2FOther%2FProject", name)
-		assert.Equal(t, "333", num)
+		assert.Equal(t, 333, num)
 	})
 
 	w := PerformRequest(route, http.MethodPost, "/project/Some%2FOther%2FProject/build/333")

tree.go

@@ -7,6 +7,7 @@ package gin
 import (
 	"bytes"
 	"net/url"
+	"strconv"
 	"strings"
 	"unicode"
 	"unicode/utf8"
@@ -49,6 +50,18 @@ func (ps Params) ByName(name string) (va string) {
 	return
 }
 
+// GetInt returns the param associated with the name as an integer.
+func (ps Params) GetInt(name string) (i int) {
+	if val, exist := ps.Get(name); exist {
+		i, err := strconv.Atoi(val)
+		if err != nil {
+			return 0
+		}
+		return i
+	}
+	return
+}
+
 type methodTree struct {
 	method string
 	root   *node