CakePHP searching multiple models - php

Question

I have a table called users and it is connected to coaches and clients.
I want to search in both users table and coaches table.
My tables look like this:
CREATE TABLE IF NOT EXISTS `team07`.`users` (
`id` INT(11) NOT NULL,
`email` VARCHAR(45) NOT NULL,
`password` VARCHAR(255) NOT NULL,
`usertype` CHAR(2) NOT NULL,
`created` DATETIME NOT NULL,
`modified` DATETIME NULL DEFAULT NULL,
`firstname` VARCHAR(45) NOT NULL,
`lastname` VARCHAR(45) NOT NULL,
`phonenumber` VARCHAR(45) NOT NULL,
`suburb` VARCHAR(45) NOT NULL,
`state` VARCHAR(10) NOT NULL,
`businessname` VARCHAR(45) NULL DEFAULT NULL,
`image` BLOB NULL DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE INDEX `email_UNIQUE` (`email` ASC))
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8;
And also
CREATE TABLE IF NOT EXISTS `team07`.`coaches` (
`id` INT NOT NULL,
`coachid` INT NOT NULL,
`appstate` INT NOT NULL,
`bio` VARCHAR(2048) NULL,
`price` INT NULL,
PRIMARY KEY (`id`),
INDEX `COACH_INFOFK_idx` (`coachid` ASC),
UNIQUE INDEX `coachid_UNIQUE` (`coachid` ASC),
CONSTRAINT `COACH_INFOFK`
FOREIGN KEY (`coachid`)
REFERENCES `team07`.`users` (`id`)
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;
This is what the code I am doing looks like:
public function review()
{
//Select all users which are a Coach AND have appstate = 1 (Just signed up, in review)
$users = $this->paginate($this->Users);
$users = $this->Users->find('all')->where(['Users.usertype'=>'CO', 'Coaches.appstate'=>'1']);
$this->set(compact('users'));
$this->set('_serialize', ['users']);
}
However I am having issues because my page responds with
Error: SQLSTATE[42S22]: Column not found: 1054 Unknown column
'Coaches.appstate' in 'where clause'
How do I fix this?

Answer 1

If the association is understood by cake, you can use contain to load it:
https://book.cakephp.org/3.0/en/orm/query-builder.html#loading-associations
So something like this:
public function review()
{
//Select all users which are a Coach AND have appstate = 1 (Just signed up, in review)
$users = $this->paginate($this->Users);
$users = $this->Users->find('all')->contain(['Coaches'])->where(['Users.usertype'=>'CO', 'Coaches.appstate'=>'1']);
$this->set(compact('users'));
$this->set('_serialize', ['users']);
}