How to migrate cakephp 2.6 models to cakephp 3.8?

Need Help
1

I read the cakephp documentation but can’t find a way to migrate the models from my 2.6 Application to cakephp 3.8. I want to migrate my app, but the new model structure is completely diferent.
Example:
I have a model called Aluno that references a table alunos in my database with this content:

<?php

class Aluno extends AppModel{
        public $name = 'Alunos';
        public $order = 'Aluno.aluno ASC';
        public $validate = array(
    'aluno' => array(
        'required' => true
    )
);
        public $belongsTo = array(
	      'Cidade' => array(
	      	'className' => 'Cidade',
	         'foreignKey' => 'cidade_id',
	         'fields' => array('Cidade.id','nome','estado_id'),
	         'conditions' => array(),
	         'order' => array('Cidade.id' => 'ASC'),
	         'dependent' => true
	      ),
        'Bairro' => array(
	      	'className' => 'Bairro',
	         'foreignKey' => 'bairro_id',
	         'fields' => array('Bairro.id','Bairro.nomebairro'),
	         'conditions' => array(),
	         'order' => array('Bairro.id' => 'ASC'),
	         'dependent' => true
	      ),
        'Sexo' => array(
	      	'className' => 'Sexo',
	         'foreignKey' => 'sexo_id',
	         'fields' => array('Sexo.id','Sexo.sexo'),
	         'conditions' => array(),
	         'order' => array('Sexo.id' => 'ASC'),
	         'dependent' => true
	      ),
        'Naciopai' => array(
	      	'className' => 'Nacionalidade',
	         'foreignKey' => 'nacionalidade_id',
	         'fields' => array('Naciopai.id','Naciopai.nome'),
	         'conditions' => array(),
	         'order' => array('Naciopai.id' => 'ASC'),
	         'dependent' => true
	      ),
	      
        'Naciomae' => array(
	      	'className' => 'Nacionalidade',
	         'foreignKey' => 'nacionalidade2_id',
	         'fields' => array('Naciomae.id','nome'),
	         'conditions' => array(),
	         'order' => array('Naciomae.id' => 'ASC'),
	         'dependent' => true
	      ),
	      'Cor' => array(
	      	'className' => 'Cor',
	         'foreignKey' => 'cor_id',
	         'fields' => array('Cor.id','Cor.cor'),
	         'conditions' => array(),
	         'order' => array('Cor.cor' => 'ASC'),
	         'dependent' => true
	      ),
	      
	       'EscolaTransporte' => array(
	      	'className' => 'EscolaTransporte',
	         'foreignKey' => 'escola_transporte_id',
	         'fields' => array('EscolaTransporte.id','EscolaTransporte.transpescola'),
	         'conditions' => array(),
	         'order' => array('EscolaTransporte.transpescola' => 'ASC'),
	         'dependent' => true
	      ),
	      'User' => array(
	      	'className' => 'User',
	         'foreignKey' => 'User_id',
	         'fields' => array('User.id','User.nome', 'User.username'),
	         'conditions' => array(),
	         'order' => array('User.nome' => 'ASC'),
	         'dependent' => true)
	   
	      );
	       
}

?>

How can I migrate this to 3.8 model format?

P.S.- Sorry for my bad english…

2

See: https://book.cakephp.org/3.0/en/orm/associations.html

Migrating from Cake 2 to 3 esp. on database related code (tables) takes a lot of work. There’s no automated, easy solution.

3

There’s an upgrade tool that can do the easy things like rearrange file structure and add namespaces, but converting your validation rules, for example, is a fully manual process.

4

Thanks for help.
My old strucure has incompatible code with PHP 7, so I decided to rewrite the code from 0, but the bake app help me to acelerate the process…