Update to 8.4.0 | New macro type, new high-optimized MVC features. Read HISTORY.md

Former-commit-id: b72a23ba063be60a9750c8b1b0df024b0c8ed549

_examples/mvc/login/user/controller.go

@@ -0,0 +1,125 @@
+package user
+
+const (
+	pathMyProfile = "/user/me"
+	pathRegister  = "/user/register"
+)
+
+// Controller is responsible to handle the following requests:
+// GET  			/user/register
+// POST 			/user/register
+// GET 				/user/login
+// POST 			/user/login
+// GET 				/user/me
+// GET				/user/{id:long} | long is a new param type, it's the int64.
+// All HTTP Methods /user/logout
+type Controller struct {
+	AuthController
+}
+
+// GetRegister handles GET:/user/register.
+func (c *Controller) GetRegister() {
+	if c.isLoggedIn() {
+		c.logout()
+		return
+	}
+
+	c.Data["Title"] = "User Registration"
+	c.Tmpl = pathRegister + ".html"
+}
+
+// PostRegister handles POST:/user/register.
+func (c *Controller) PostRegister() {
+	// we can either use the `c.Ctx.ReadForm` or read values one by one.
+	var (
+		firstname = c.Ctx.FormValue("firstname")
+		username  = c.Ctx.FormValue("username")
+		password  = c.Ctx.FormValue("password")
+	)
+
+	user, err := c.createOrUpdate(firstname, username, password)
+	if err != nil {
+		c.fireError(err)
+		return
+	}
+
+	// setting a session value was never easier.
+	c.Session.Set(sessionIDKey, user.ID)
+	// succeed, nothing more to do here, just redirect to the /user/me.
+	c.Path = pathMyProfile
+}
+
+// GetLogin handles GET:/user/login.
+func (c *Controller) GetLogin() {
+	if c.isLoggedIn() {
+		c.logout()
+		return
+	}
+	c.Data["Title"] = "User Login"
+	c.Tmpl = PathLogin + ".html"
+}
+
+// PostLogin handles POST:/user/login.
+func (c *Controller) PostLogin() {
+	var (
+		username = c.Ctx.FormValue("username")
+		password = c.Ctx.FormValue("password")
+	)
+
+	user, err := c.verify(username, password)
+	if err != nil {
+		c.fireError(err)
+		return
+	}
+
+	c.Session.Set(sessionIDKey, user.ID)
+	c.Path = pathMyProfile
+}
+
+// AnyLogout handles any method on path /user/logout.
+func (c *Controller) AnyLogout() {
+	c.logout()
+}
+
+// GetMe handles GET:/user/me.
+func (c *Controller) GetMe() {
+	id, err := c.Session.GetInt64(sessionIDKey)
+	if err != nil || id <= 0 {
+		// when not already logged in.
+		c.Path = PathLogin
+		return
+	}
+
+	u, found := c.Source.GetByID(id)
+	if !found {
+		// if the  session exists but for some reason the user doesn't exist in the "database"
+		// then logout him and redirect to the register page.
+		c.logout()
+		return
+	}
+
+	// set the model and render the view template.
+	c.User = u
+	c.Data["Title"] = "Profile of " + u.Username
+	c.Tmpl = pathMyProfile + ".html"
+}
+
+func (c *Controller) renderNotFound(id int64) {
+	c.Status = 404
+	c.Data["Title"] = "User Not Found"
+	c.Data["ID"] = id
+	c.Tmpl = "user/notfound.html"
+}
+
+// GetBy handles GET:/user/{id:long},
+// i.e http://localhost:8080/user/1
+func (c *Controller) GetBy(userID int64) {
+	// we have /user/{id}
+	// fetch and render user json.
+	if user, found := c.Source.GetByID(userID); !found {
+		// not user found with that ID.
+		c.renderNotFound(userID)
+	} else {
+		c.Ctx.JSON(user)
+	}
+}