Support array of objects parameters (#40)

* test update

* fix array of objects unmarshaling

* update tests

* update tests

* update tests

* chore: revert cosmetic changes to deepobject.go

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Marcin Romaszewicz <marcinr@gmail.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: 3 people

bindparam_test.go

@@ -294,12 +294,20 @@ func TestSplitParameter(t *testing.T) {
 
 func TestBindQueryParameter(t *testing.T) {
 	t.Run("deepObject", func(t *testing.T) {
+		type Object struct {
+			Count int `json:"count"`
+		}
+		type Nested struct {
+			Object  Object   `json:"object"`
+			Objects []Object `json:"objects"`
+		}
 		type ID struct {
 			FirstName *string     `json:"firstName"`
 			LastName  *string     `json:"lastName"`
 			Role      string      `json:"role"`
 			Birthday  *types.Date `json:"birthday"`
 			Married   *MockBinder `json:"married"`
+			Nested    Nested      `json:"nested"`
 		}
 
 		expectedName := "Alex"
@@ -308,16 +316,23 @@ func TestBindQueryParameter(t *testing.T) {
 			Role:      "admin",
 			Birthday:  &types.Date{Time: time.Date(2020, 1, 1, 0, 0, 0, 0, time.UTC)},
 			Married:   &MockBinder{time.Date(2020, 2, 2, 0, 0, 0, 0, time.UTC)},
+			Nested: Nested{
+				Object:  Object{Count: 123},
+				Objects: []Object{{Count: 1}, {Count: 2}},
+			},
 		}
 
 		actual := new(ID)
 		paramName := "id"
 		queryParams := url.Values{
-			"id[firstName]": {"Alex"},
-			"id[role]":      {"admin"},
-			"foo":           {"bar"},
-			"id[birthday]":  {"2020-01-01"},
-			"id[married]":   {"2020-02-02"},
+			"id[firstName]":                 {"Alex"},
+			"id[role]":                      {"admin"},
+			"foo":                           {"bar"},
+			"id[birthday]":                  {"2020-01-01"},
+			"id[married]":                   {"2020-02-02"},
+			"id[nested][object][count]":     {"123"},
+			"id[nested][objects][0][count]": {"1"},
+			"id[nested][objects][1][count]": {"2"},
 		}
 
 		err := BindQueryParameter("deepObject", true, false, paramName, queryParams, &actual)

deepobject_test.go

@@ -10,27 +10,45 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
+type InnerArrayObject struct {
+	Names []string `json:"names"`
+}
+
 type InnerObject struct {
 	Name string
 	ID   int
 }
 
+type InnerObject2 struct {
+	Foo string
+	Is  bool
+}
+
+type InnerObject3 struct {
+	Foo   string
+	Count *int `json:"count,omitempty"`
+}
+
 // These are all possible field types, mandatory and optional.
 type AllFields struct {
-	I   int             `json:"i"`
-	Oi  *int            `json:"oi,omitempty"`
-	F   float32         `json:"f"`
-	Of  *float32        `json:"of,omitempty"`
-	B   bool            `json:"b"`
-	Ob  *bool           `json:"ob,omitempty"`
-	As  []string        `json:"as"`
-	Oas *[]string       `json:"oas,omitempty"`
-	O   InnerObject     `json:"o"`
-	Oo  *InnerObject    `json:"oo,omitempty"`
-	D   MockBinder      `json:"d"`
-	Od  *MockBinder     `json:"od,omitempty"`
-	M   map[string]int  `json:"m"`
-	Om  *map[string]int `json:"om,omitempty"`
+	I    int              `json:"i"`
+	Oi   *int             `json:"oi,omitempty"`
+	Ab   *[]bool          `json:"ab,omitempty"`
+	F    float32          `json:"f"`
+	Of   *float32         `json:"of,omitempty"`
+	B    bool             `json:"b"`
+	Ob   *bool            `json:"ob,omitempty"`
+	As   []string         `json:"as"`
+	Oas  *[]string        `json:"oas,omitempty"`
+	O    InnerObject      `json:"o"`
+	Ao   []InnerObject2   `json:"ao"`
+	Aop  *[]InnerObject3  `json:"aop"`
+	Onas InnerArrayObject `json:"onas"`
+	Oo   *InnerObject     `json:"oo,omitempty"`
+	D    MockBinder       `json:"d"`
+	Od   *MockBinder      `json:"od,omitempty"`
+	M    map[string]int   `json:"m"`
+	Om   *map[string]int  `json:"om,omitempty"`
 }
 
 func TestDeepObject(t *testing.T) {
@@ -47,19 +65,33 @@ func TestDeepObject(t *testing.T) {
 	}
 	d := MockBinder{Time: time.Date(2020, 2, 1, 0, 0, 0, 0, time.UTC)}
 
+	two := 2
+
 	srcObj := AllFields{
 		I:   12,
 		Oi:  &oi,
 		F:   4.2,
 		Of:  &of,
 		B:   true,
 		Ob:  &ob,
+		Ab:  &[]bool{true},
 		As:  []string{"hello", "world"},
 		Oas: &oas,
 		O: InnerObject{
 			Name: "Joe Schmoe",
 			ID:   456,
 		},
+		Ao: []InnerObject2{
+			{Foo: "bar", Is: true},
+			{Foo: "baz"},
+		},
+		Aop: &[]InnerObject3{
+			{Foo: "a"},
+			{Foo: "b", Count: &two},
+		},
+		Onas: InnerArrayObject{
+			Names: []string{"Bill", "Frank"},
+		},
 		Oo: &oo,
 		D:  d,
 		Od: &d,
@@ -69,7 +101,7 @@ func TestDeepObject(t *testing.T) {
 
 	marshaled, err := MarshalDeepObject(srcObj, "p")
 	require.NoError(t, err)
-	t.Log(marshaled)
+	require.EqualValues(t, "p[ab][0]=true&p[ao][0][Foo]=bar&p[ao][0][Is]=true&p[ao][1][Foo]=baz&p[ao][1][Is]=false&p[aop][0][Foo]=a&p[aop][1][Foo]=b&p[aop][1][count]=2&p[as][0]=hello&p[as][1]=world&p[b]=true&p[d]=2020-02-01&p[f]=4.2&p[i]=12&p[m][additional]=1&p[o][ID]=456&p[o][Name]=Joe Schmoe&p[oas][0]=foo&p[oas][1]=bar&p[ob]=true&p[od]=2020-02-01&p[of]=3.7&p[oi]=5&p[om][additional]=1&p[onas][names][0]=Bill&p[onas][names][1]=Frank&p[oo][ID]=123&p[oo][Name]=Marcin Romaszewicz", marshaled)
 
 	params := make(url.Values)
 	marshaledParts := strings.Split(marshaled, "&")