Grails - 404 File not found - but why? - grails

Question

i start to write a simple login formular. This is the code for the view:
<g:form controller="login" action="checkUsernameAndPassword">
<input type = "text"name="userNameField" value="userName"/>
<input type = "password"name="passWordField" value="passWord"/>
<input type = "submit" name="loginButton" value="Login"/>
</g:form>
this is the code for the controller:
class LoginController {
def index = {
render(view: "login")
}//endMethod Index
def checkUsernameAndPassword = {
[userName = params.userName ,passWord = params.passWord];
}//endMethod checkUsernameAndPassword
}
as you can see, it doesnt do anything yet, i just wanted to print the values on the screen, however i get a 404 message (i run the file on local host)
The requested resource (/projectName/hello/checkUsernameAndPassword) is not available.
I just cant figure out why. Would be great if any of you guys have a tip for me.
beste regards,
Daniel
Edit (Change 1):
def checkUsernameAndPassword = {
render(view: "login",model: [userName: params.userName ,passWord: params.passWord])
}//endMethod checkUsernameAndPassword
}
(Change 2)
//added this line in view
<div>Username: ${userName} Passwort: ${passWord}</div>

Answer 1

<g:form controller="hello" action="checkUsernameAndPassword">
means that you have HelloController with checkUsernameAndPassword action
But in your code sample you have LoginController so to get your form work, you must write:
<g:form controller="login" action="checkUsernameAndPassword">
<input type = "text" name="userNameField" value="userName"/>
<input type = "password" name="passWordField" value="passWord"/>
<input type = "submit" name="loginButton" value="Login"/>
</g:form>
P.S. In Grails world is sometimes much better to use GSP Tags instead of plain HTML because it will generate proper(in 99.99% of cases) HTML code for you.
So the best way to implement your form is:
<g:form controller="login" action="checkUsernameAndPassword">
<g:textField name="userNameField" value="userName" />
<g:passwordField name="passWordField" value="passWord" />
<g:submitButton name="loginButton" value="Login" />
</g:form>
P.S.2 Proper LoginController code(for the form described before)
class LoginController {
def index = {
render(view: "login")
}//endMethod Index
def checkUsernameAndPassword = {
[userName: params.userNameField ,passWord: params.passWordField];
}//endMethod checkUsernameAndPassword