我在Intellij 14上使用Play框架,我认为框架的版本是2,关于信息显示我:
[info] The current project is built against Scala 2.10.4
[info] Available Plugins: sbt.plugins.IvyPlugin, sbt.plugins.JvmPlugin, sbt.plugins.CorePlugin, sbt.plugins.JUnitXmlReportPlugi
n, play.Play, play.PlayJava, play.PlayScala, play.twirl.sbt.SbtTwirl, com.typesafe.sbt.jse.SbtJsEngine, com.typesafe.sbt.jse.Sb
tJsTask, com.typesafe.sbt.web.SbtWeb, com.typesafe.sbt.webdriver.SbtWebDriver, com.typesafe.sbt.coffeescript.SbtCoffeeScript, c
om.typesafe.sbt.less.SbtLess, com.typesafe.sbt.jshint.SbtJSHint, com.typesafe.sbt.rjs.SbtRjs, com.typesafe.sbt.digest.SbtDigest
, com.typesafe.sbt.mocha.SbtMocha, com.typesafe.sbteclipse.plugin.EclipsePlugin, org.sbtidea.SbtIdeaPlugin, com.typesafe.sbt.Sb
tNativePackager
[info] sbt, sbt plugins, and build definitions are using Scala 2.10.4
我正在尝试创建一个用于登录的表单,但它运行良好但我无法正确验证它并显示错误消息。请看下面的代码:
POST /authorize controllers.LoginController.authorize
控制器scala:
package controllers
import models.{DB, User}
import play.api.data.Form
import play.api.data.Forms._
import play.api.libs.json.Json
import play.api.mvc._
/**
* Created by jlopesde on 26-12-2014.
*/
object LoginController extends Controller {
val loginForm: Form[User] = Form (
mapping (
"user" -> nonEmptyText,
"password" -> nonEmptyText
)(User.apply)(User.unapply)
verifying ("Invalid login", f => true)
)
def index = Action {
Ok(views.html.login("ok"))
}
def authorize = Action {implicit request =>
// get user from request
val user = loginForm.bindFromRequest().get
// query user database
val _user = DB.query[User].whereEqual("login", user.login).whereEqual("password", user.password).fetchOne()
var response = _user match {
case None => "KO"
case _ => "OK"
}
if (response.equals("OK")) {
//send to index page
Redirect(routes.Application.index()).withSession("user" -> user.login)
} else {
Redirect(routes.LoginController.index())
}
}
}
login.html
:
@(message: String)
@(myForm: Form[User])
@import helper._
@import models.User
@main("This is login") {
@helper.form(routes.LoginController.authorize()) {
<label for="user">username:</label> <input id="user" name="user" type="text">
<label for="password">Password:</label><input id="password" name="password" type="password">
<button>Login</button>
}
}
问题是,我无法使其发挥作用,Play无法识别类型myForm
,我应该以某种方式发送它,但它需要一个字符串,而不是一个表单。
我尝试了几个例子但没有一个可行。
Compilation error
not found: value myForm
In C:\Users\jlopesde\playprojects\my-first-app\app\views\login.scala.html:2
1@(message: String)
2@(myForm: Form[User])
3@import helper._
4@import models.User
5
6@main("This is login") {
7
答案 0 :(得分:2)
您无法为此类视图声明两个参数列表。
@(message: String)
@(myForm: Form[User]) // <-- this doesn't make sense
您需要将它们折叠到一个列表中:
@(message: String, myForm: Form[User])
或者像这样分组:
@(message: String)(myForm: Form[User])
模板编译器只看到第一个列表作为参数,这就是为什么当它在下一行看到@(myForm: Form[User])
时会感到困惑。
如果您要在视图中使用此Form
(您现在不太正确,但我认为您会这样做),则需要将Form
对象传递给index
控制器功能中的视图:
def index = Action {
Ok(views.html.login("ok", loginForm))
}