英文:
Cannot insert form data into database using mgo in gin
问题
我是Go语言的新手，正在使用gin框架尝试创建一个用户对象：
const (// CollectionArticle holds the name of the users collectionCollectionUser = "users")// User table contains the information for each usertype User struct {ID bson.ObjectId `json:"_id,omitempty" bson:"_id,omitempty"`Username string `json:"username" bson:"username"`Email string `json:"email" bson:"email"`Password string `json:"password" bson:"password"`StatusID uint8 `json:"status_id" bson:"status_id"`CreatedAt time.Time `json:"created_at" bson:"created_at"`UpdatedAt time.Time `json:"updated_at" bson:"updated_at"`Deleted uint8 `json:"deleted" bson:"deleted"`}
这是创建用户的控制器：
// Create a userfunc Create(c *gin.Context) {db := c.MustGet("db").(*mgo.Database)//to help debuggingx, _ := ioutil.ReadAll(c.Request.Body)log.Printf("request body is: %s \n", string(x))user := models.User{}err := c.Bind(&user)if err != nil {c.Error(err)return}//to help debugginglog.Printf("user is: %v", user)log.Printf("username is: %s and emails is %s", user.Username, user.Email)err = db.C(models.CollectionUser).Insert(user)if err != nil {c.Error(err)}c.Redirect(http.StatusMovedPermanently, "/users")}
注册表单如下：
<form action="/user/create" method="POST"><div class="form-group"><label for="username">Username</label><input type="text" name="username" class="form-control" id="username" placeholder="Enter the username of the user"></div><div class="form-group"><label for="email">Email</label><input name="email" class="form-control" placeholder="Enter user email" /></div><div class="form-group"><label for="password">Password</label><input type="password" name="password" class="form-control" placeholder="Password" required></div><button type="submit" class="btn btn-default">Submit</button></form>
在终端中，我得到了以下输出：
[GIN-debug] Listening and serving HTTP on :7000[GIN] 2016/04/25 - 06:30:04 | 200 | 549.499µs | 127.0.0.1 | GET /registerrequest body is: username=bob&email=bob%40me.com&password=1234user is: {ObjectIdHex("") 0 0001-01-01 00:00:00 +0000 UTC 0001-01-01 00:00:00 +0000 UTC 0}username is: and emails is
如你所见，username、email和password字段的值被传递给了控制器。当我在Mongo数据库中检查users集合时，我发现对象已经创建，但是从表单提交的字段为空。
我无法弄清楚为什么会发生这种情况，所以希望你能给我一些提示。
英文:
I'm new to Go and using gin framework trying to create a user object:
const (// CollectionArticle holds the name of the users collectionCollectionUser = "users")// User table contains the information for each usertype User struct {ID bson.ObjectId `json:"_id,omitempty" bson:"_id,omitempty"`Username string `json:"username" bson:"username"`Email string `json:"email" bson:"email"`Password string `json:"password" bson:"password"`StatusID uint8 `json:"status_id" bson:"status_id"`CreatedAt time.Time `json:"created_at" bson:"created_at"`UpdatedAt time.Time `json:"updated_at" bson:"updated_at"`Deleted uint8 `json:"deleted" bson:"deleted"`}
This is the controller to create user
// Create a userfunc Create(c *gin.Context) {db := c.MustGet("db").(*mgo.Database)//to help debuggingx, _ := ioutil.ReadAll(c.Request.Body)log.Printf("request body is: %s \n", string(x))user := models.User{}err := c.Bind(&user)if err != nil {c.Error(err)return}//to help debugginglog.Printf("user is: %v", user )log.Printf("username is: %s and emails is %s", user.Username, user.Email )err = db.C(models.CollectionUser).Insert(user)if err != nil {c.Error(err)}c.Redirect(http.StatusMovedPermanently, "/users")}
And the registration form is:
<form action="/user/create" method="POST"><div class="form-group"><label for="username">Username</label><input type="text" name="username" class="form-control" id="username" placeholder="Enter the username of the user" ></div><div class="form-group"><label for="email">Email</label><input name="email" class="form-control" placeholder="Enter user email" /></div><div class="form-group"><label for="password">Password</label><input type="password" name="password" class="form-control" placeholder="Password" required></div><button type="submit" class="btn btn-default">Submit</button></form>
In the terminal I get:
[GIN-debug] Listening and serving HTTP on :7000[GIN] 2016/04/25 - 06:30:04 | 200 | 549.499µs | 127.0.0.1 | GET /registerrequest body is: username=bob&email=bob%40me.com&password=1234user is: {ObjectIdHex("") 0 0001-01-01 00:00:00 +0000 UTC 0001-01-01 00:00:00 +0000 UTC 0}username is: and emails is
AS you can see username, email and password field values are passed to the controller. When I check users collection in the the mongo database, I see that the objects are created but the fields submitted from the form are empty.
I could not figure out why this happens, so appreciate your hints.
答案1
得分: 2
根据gin文档，你需要使用form标签来定义字段的结构，例如：
User string `form:"user" binding:"required"`Password string `form:"password" binding:"required"`
英文:
according to the gin document, you need form tag to struct fields. like:
User string `form:"user" binding:"required"`Password string `form:"password" binding:"required"`
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