how to get primary key value of newly inserted user in zend - php

Question

i have a problem on my project im currently working on and
this is my register controller
every time a user registers there will be a default image that will be displayed in their profile
public function registerAction()
{
$form = new Application_Form_Users();
$form->submit->setLabel('Register');
$this->view->form = $form ;
if ($this->getRequest()->isPost()) {
$formData = $this->getRequest()->getPost();
if ($form->isValid($formData)) {
$id = $form->getValue('uid');
$firstname = $form->getValue('firstname');
$lastname = $form->getValue('lastname');
$email = $form->getValue('email');
$username = $form->getValue('username');
$password = $form->getValue('password');
$vpassword = $form->getValue('vpassword');
if ($password == $vpassword) {
$register = new Application_Model_DbTable_Users();
$password = md5($password);
$register->addUser($firstname , $lastname , $email , $username , $password );
if ($register) {
$register = new Application_Model_DbTable_Users();
$uid = $form->populate($register->getUser($id));
$addimg = new Application_Model_DbTable_Images();
$imagepath = APPLICATION_PATH.'/../public/upload/';
$addimg->addImage($uid , $imagepath);
}
$this->_helper->redirector('index');
} else {
$this->view->errorMessage = "Passwords don't match.";
}
} else {
$form->populate($formData);
}
}
}
this is my function to add default image path into my database
public function addImage($uid , $imgpath)
{
$data = array(
'uid' => $uid ,
'imgpath' => $imgpath ,
);
$this->insert($data);
}
but i got an error because my uid is null my question is how to get the value of uid in my users table, also users table and images table have a relation.

Answer 1

If you are using Zend_Db_Table then you can do something like this in addUser():
public function addUser($firstname , $lastname , $email , $username , $password ){
$user = $this->createRow();
$user->fname = $firstname;
$user->lname = $lastname;
...
$user->save();
return $user->id;
}
This will return you user id so you can do:
$id = $register->addUser($firstname , $lastname , $email , $username , $password );
and
$addimg->addImage($id , $imagepath); //$id, not $uid !

Answer 2

You can put a default value for $imgpath in your database for each new entry.

Answer 3

You can use the lastInsertId() function within the Zend_Db_Adapter class.
http://framework.zend.com/manual/1.12/en/zend.db.adapter.html#zend.db.adapter.write.lastinsertid
In your case it should be:
$this->getAdapter()->lastInsertId()
after your last line in the addImage method.
Warning: This does not work with all SQL adapters (like PostgreSQL)

Answer 4

From what i can get from your code, you're adding a new user, and then, adding an image related to his id.
$uid = $form->populate($register->getUser($id));
$addimg = new Application_Model_DbTable_Images();
$imagepath = APPLICATION_PATH.'/../public/upload/';
$addimg->addImage($uid , $imagepath);
And, you get an "error" because $uid is null. But $id shouldn't be null, and it should be the ID of the user you just added.
So you might try this and see if it works for you
$addimg->addImage($id , $imagepath);