Merge pull request #570 from andreynering/array

Implement QueryArray and PostFormArray methods

context.go

@@ -230,13 +230,29 @@ func (c *Context) DefaultQuery(key, defaultValue string) string {
 // 		("", false) == c.GetQuery("id")
 // 		("", true) == c.GetQuery("lastname")
 func (c *Context) GetQuery(key string) (string, bool) {
-	req := c.Request
-	if values, ok := req.URL.Query()[key]; ok && len(values) > 0 {
-		return values[0], true
+	if values, ok := c.GetQueryArray(key); ok {
+		return values[0], ok
 	}
 	return "", false
 }
 
+// QueryArray returns a slice of strings for a given query key.
+// The length of the slice depends on the number of params with the given key.
+func (c *Context) QueryArray(key string) []string {
+	values, _ := c.GetQueryArray(key)
+	return values
+}
+
+// GetQueryArray returns a slice of strings for a given query key, plus
+// a boolean value whether at least one value exists for the given key.
+func (c *Context) GetQueryArray(key string) ([]string, bool) {
+	req := c.Request
+	if values, ok := req.URL.Query()[key]; ok && len(values) > 0 {
+		return values, true
+	}
+	return []string{}, false
+}
+
 // PostForm returns the specified key from a POST urlencoded form or multipart form
 // when it exists, otherwise it returns an empty string `("")`.
 func (c *Context) PostForm(key string) string {
@@ -262,17 +278,34 @@ func (c *Context) DefaultPostForm(key, defaultValue string) string {
 // 		email=  			  	-->  ("", true) := GetPostForm("email") // set email to ""
 //							 	-->  ("", false) := GetPostForm("email") // do nothing with email
 func (c *Context) GetPostForm(key string) (string, bool) {
+	if values, ok := c.GetPostFormArray(key); ok {
+		return values[0], ok
+	}
+	return "", false
+}
+
+// PostFormArray returns a slice of strings for a given form key.
+// The length of the slice depends on the number of params with the given key.
+func (c *Context) PostFormArray(key string) []string {
+	values, _ := c.GetPostFormArray(key)
+	return values
+}
+
+// GetPostFormArray returns a slice of strings for a given form key, plus
+// a boolean value whether at least one value exists for the given key.
+func (c *Context) GetPostFormArray(key string) ([]string, bool) {
 	req := c.Request
+	req.ParseForm()
 	req.ParseMultipartForm(32 << 20) // 32 MB
 	if values := req.PostForm[key]; len(values) > 0 {
-		return values[0], true
+		return values, true
 	}
 	if req.MultipartForm != nil && req.MultipartForm.File != nil {
 		if values := req.MultipartForm.Value[key]; len(values) > 0 {
-			return values[0], true
+			return values, true
 		}
 	}
-	return "", false
+	return []string{}, false
 }
 
 // Bind checks the Content-Type to select a binding engine automatically,

context_test.go

@@ -251,6 +251,22 @@ func TestContextQueryAndPostForm(t *testing.T) {
 	assert.Equal(t, obj.Page, 11)
 	assert.Equal(t, obj.Both, "")
 	assert.Equal(t, obj.Array, []string{"first", "second"})
+
+	values, ok := c.GetQueryArray("array[]")
+	assert.True(t, ok)
+	assert.Equal(t, "first", values[0])
+	assert.Equal(t, "second", values[1])
+
+	values = c.QueryArray("array[]")
+	assert.Equal(t, "first", values[0])
+	assert.Equal(t, "second", values[1])
+
+	values = c.QueryArray("nokey")
+	assert.Equal(t, 0, len(values))
+
+	values = c.QueryArray("both")
+	assert.Equal(t, 1, len(values))
+	assert.Equal(t, "GET", values[0])
 }
 
 func TestContextPostFormMultipart(t *testing.T) {
@@ -299,6 +315,22 @@ func TestContextPostFormMultipart(t *testing.T) {
 	assert.False(t, ok)
 	assert.Empty(t, value)
 	assert.Equal(t, c.DefaultPostForm("nokey", "nothing"), "nothing")
+
+	values, ok := c.GetPostFormArray("array")
+	assert.True(t, ok)
+	assert.Equal(t, "first", values[0])
+	assert.Equal(t, "second", values[1])
+
+	values = c.PostFormArray("array")
+	assert.Equal(t, "first", values[0])
+	assert.Equal(t, "second", values[1])
+
+	values = c.PostFormArray("nokey")
+	assert.Equal(t, 0, len(values))
+
+	values = c.PostFormArray("foo")
+	assert.Equal(t, 1, len(values))
+	assert.Equal(t, "bar", values[0])
 }
 
 func TestContextSetCookie(t *testing.T) {