Re: Login page problems

[Cezary Biernacki]

Hi,
in your Java class you have
@Component
private Form form;

and in template:
form t:type=form t:id=loginForm

If you don't provide a component id is argument to @Component, Tapestry
uses field's name as the id. You need to do one of following:

   - change field name to loginForm,
   - or add loginForm as argument to @Component.
   - or change t:id in your template to form

In this case I would also recommend to use @InjectComponent instead of
@Component, e.g.:

@InjectComponent(loginForm)
private Form form;

Best regards
Cezary

On Tue, Oct 23, 2012 at 7:40 PM, John j...@quivinco.com wrote:

 I did a T4 project ages ago and now learning T5.

 I just want to build a working login page and copied the code snippets
 here http://tapestry.apache.org/forms-and-validation.html and added them
 to the quickstart application - my versions appear below.

 When I navigate to the Login page it returns:
 Embedded component(s) form are defined within component class
 com.epulse.tapestrydemo.pages.Login (or a super-class of Login), but are
 not present in the component template
 (classpath:com/epulse/tapestrydemo/pages/Login.tml).

 Has anyone a simple login page example that works, or can help with the
 above?

 John



 /*
  * To change this template, choose Tools | Templates
  * and open the template in the editor.
  */
 package com.epulse.tapestrydemo.pages;

 import com.epulse.tapestrydemo.security.UserAuthenticator;
 import org.apache.tapestry5.annotations.Component;
 import org.apache.tapestry5.annotations.InjectComponent;
 import org.apache.tapestry5.annotations.Persist;
 import org.apache.tapestry5.annotations.Property;
 import org.apache.tapestry5.corelib.components.Form;
 import org.apache.tapestry5.corelib.components.PasswordField;
 import org.apache.tapestry5.ioc.annotations.Inject;

 public class Login
 {
 @Persist
 @Property
 private String userName;

 @Property
 private String password;

 @Inject
 private UserAuthenticator authenticator;

 @InjectComponent
 private PasswordField passwordField;

 @Component
 private Form form;

 /**
  * Do the cross-field validation
  */
 void onValidateFromForm()
 {
 if (!authenticator.isValid(userName, password))
 {
 // record an error, and thereby prevent Tapestry from emitting
 a success event
 form.recordError(passwordField, Invalid user name or
 password.);
 }
 }

 /**
  * Validation passed, so we'll go to the PostLogin page
  */
 Object onSuccess()
 {
 return About.class;
 }
 }


 html t:type=layout title=Contact com.epulse
   xmlns:t=http://tapestry.apache.org/schema/tapestry_5_3.xsd;
   xmlns:p=tapestry:parameter

 h1Please Login/h1

 form t:type=form t:id=loginForm

 t:errors/

 t:label for=userName/:
 input t:type=TextField t:id=userName
 t:validate=required,minlength=3 size=30/
 br/
 t:label for=password/:
 input t:type=PasswordField t:id=password
 t:validate=required,minlength=3 size=30/
 br/
 input type=submit value=Login/
 /form

 /html

Re: Login page problems

[Shing Hing Man]

Instead of 

  @Component
    private Form form;



pleases try 

@InjectComponent(value=loginForm)

private Form form;

The difference bewteen @Component and @InjectComponent is explained on the 
following page. 

http://tapestry.apache.org/injection-faq.html


Shing 




 From: John j...@quivinco.com
To: users@tapestry.apache.org 
Sent: Tuesday, October 23, 2012 6:40 PM
Subject: Login page problems
 
I did a T4 project ages ago and now learning T5.

I just want to build a working login page and copied the code snippets here 
http://tapestry.apache.org/forms-and-validation.html and added them to the 
quickstart application - my versions appear below.

When I navigate to the Login page it returns:
Embedded component(s) form are defined within component class 
com.epulse.tapestrydemo.pages.Login (or a super-class of Login), but are not 
present in the component template 
(classpath:com/epulse/tapestrydemo/pages/Login.tml).

Has anyone a simple login page example that works, or can help with the above?

John



/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package com.epulse.tapestrydemo.pages;

import com.epulse.tapestrydemo.security.UserAuthenticator;
import org.apache.tapestry5.annotations.Component;
import org.apache.tapestry5.annotations.InjectComponent;
import org.apache.tapestry5.annotations.Persist;
import org.apache.tapestry5.annotations.Property;
import org.apache.tapestry5.corelib.components.Form;
import org.apache.tapestry5.corelib.components.PasswordField;
import org.apache.tapestry5.ioc.annotations.Inject;

public class Login
{
    @Persist
    @Property
    private String userName;

    @Property
    private String password;

    @Inject
    private UserAuthenticator authenticator;

    @InjectComponent
    private PasswordField passwordField;

    @Component
    private Form form;

    /**
     * Do the cross-field validation
     */
    void onValidateFromForm()
    {
        if (!authenticator.isValid(userName, password))
        {
            // record an error, and thereby prevent Tapestry from emitting a 
success event
            form.recordError(passwordField, Invalid user name or password.);
        }
    }

    /**
     * Validation passed, so we'll go to the PostLogin page
     */
    Object onSuccess()
    {
        return About.class;
    }
}


html t:type=layout title=Contact com.epulse
      xmlns:t=http://tapestry.apache.org/schema/tapestry_5_3.xsd;
      xmlns:p=tapestry:parameter

        h1Please Login/h1

        form t:type=form t:id=loginForm

            t:errors/

            t:label for=userName/:
            input t:type=TextField t:id=userName 
t:validate=required,minlength=3 size=30/
            br/
            t:label for=password/:
            input t:type=PasswordField t:id=password 
t:validate=required,minlength=3 size=30/
            br/
            input type=submit value=Login/
        /form

/html