Document FirstOrInit, FirstOrCreate

README.md

@@ -9,6 +9,7 @@ Yet Another ORM library for Go, aims for developer friendly
 * Before/After Create/Save/Update/Delete Callbacks
 * Order/Select/Limit/Offset Support
 * Update, Updates Like Rails's update_attribute, update_attributes
+* FirstOrInit, FirstOrCreate Like Rails's first_or_initialize, first_or_create
 * Dynamically set table name when search, update, delete...
 * Automatically CreatedAt, UpdatedAt
 * Soft Delete
@@ -84,6 +85,22 @@ db.Find(&users, &User{Age: 20})
 db.Find(&users, map[string]interface{}{"age": 20})
 //// users -> select * from users where age = 20;
 
+// FirstOrInit
+db.FirstOrInit(&user, User{Name: "noexisting_user"})
+//// user -> User{Name: "noexisting_user"}
+db.Where(User{Name: "Jinzhu"}).FirstOrInit(&user)
+//// user -> User{Id: 111, Name: "Jinzhu"}
+db.FirstOrInit(&user, map[string]interface{}{"name": "jinzhu", "age": 20})
+//// user -> User{Id: 111, Name: "Jinzhu", Age: 20}
+
+// FirstOrCreate
+db.FirstOrCreate(&user, User{Name: "noexisting_user"})
+//// user -> User{Id: 112, Name: "noexisting_user"}
+db.Where(User{Name: "Jinzhu"}).FirstOrCreate(&user)
+//// user -> User{Id: 111, Name: "Jinzhu"}
+db.FirstOrCreate(&user, map[string]interface{}{"name": "jinzhu", "age": 20})
+//// user -> User{Id: 111, Name: "Jinzhu", Age: 20}
+
 // Select
 db.Select("name").Find(&users)
 //// users -> select name from users;
@@ -251,7 +268,6 @@ db.Where("mail_type = ?", "TEXT").Find(&users1).Table("deleted_users").First(&us
 ```
 
 ## TODO
-* FindOrInitialize / FindOrCreate
 * SubStruct
 * Index, Unique, Valiations
 * Auto Migration

gorm_test.go

@@ -800,27 +800,37 @@ func TestSoftDelete(t *testing.T) {
 }
 
 func TestFindOrInitialize(t *testing.T) {
-	var user1, user2 User
+	var user1, user2, user3 User
 	db.Where(&User{Name: "find or init", Age: 33}).FirstOrInit(&user1)
 	if user1.Name != "find or init" || user1.Id != 0 || user1.Age != 33 {
 		t.Errorf("user should be initialized with search value")
 	}
 
-	db.FirstOrInit(&user2, map[string]interface{}{"name": "find or init 2"})
+	db.Where(User{Name: "find or init", Age: 33}).FirstOrInit(&user2)
-	if user2.Name != "find or init 2" || user2.Id != 0 {
+	if user2.Name != "find or init" || user2.Id != 0 || user2.Age != 33 {
+		t.Errorf("user should be initialized with search value")
+	}
+
+	db.FirstOrInit(&user3, map[string]interface{}{"name": "find or init 2"})
+	if user3.Name != "find or init 2" || user3.Id != 0 {
 		t.Errorf("user should be initialized with inline search value")
 	}
 }
 
 func TestFindOrCreate(t *testing.T) {
-	var user1, user2 User
+	var user1, user2, user3 User
 	db.Where(&User{Name: "find or create", Age: 33}).FirstOrCreate(&user1)
 	if user1.Name != "find or create" || user1.Id == 0 || user1.Age != 33 {
 		t.Errorf("user should be created with search value")
 	}
 
-	db.FirstOrCreate(&user2, map[string]interface{}{"name": "find or create 2"})
+	db.Where(&User{Name: "find or create", Age: 33}).FirstOrCreate(&user2)
-	if user2.Name != "find or create 2" || user2.Id == 0 {
+	if user2.Name != "find or create" || user2.Id == 0 || user2.Age != 33 {
+		t.Errorf("user should be created with search value")
+	}
+
+	db.FirstOrCreate(&user3, map[string]interface{}{"name": "find or create 2"})
+	if user3.Name != "find or create 2" || user3.Id == 0 {
 		t.Errorf("user should be created with inline search value")
 	}
 }