cakePHP 3: multi JOIN - cakephp

Question

I'm having trouble with relationships between tables with CakePHP 3.x. I am struggling to make realcionamento between tables with more than 2 levels realcionamento .
I will introduce the code of relationships and also the query I'm doing to make it more clear what behavior relations:
class CircuitosTable extends Table{
public function initialize(array $config)
{
$this->table('circuitos');
$this->addAssociations([
'belongsTo' => [
'Planostreinos' => [
'foreignKey' => 'id_plano_treino',
'joinType' => 'INNER',
'bindingKey' => 'id'
]
],
'hasMany' => [
'Atividades' => [
'className' => 'Atividades',
'foreignKey' => 'id_circuito',
'bindingKey' => 'id',
'joinType' => 'INNER',
'dependent' => false,
'cascadeCallbacks' => false,
'propertyName' => '_atividades'
],
]
]);
}
}
class AtividadesTable extends Table{
public function initialize(array $config)
{
$this->table('atividades');
$this->addAssociations([
'belongsTo' => [
'Tiposexercicios' => [
'foreignKey' => 'id_tipo_exercicio',
'joinType' => 'INNER',
'bindingKey' => 'id'
],
'Circuitos' => [
'foreignKey' => 'id_circuito',
'joinType' => 'INNER',
'bindingKey' => 'id'
]
]
]);
}
}
class TiposexerciciosTable extends Table{
public function initialize(array $config)
{
$this->table('tipos_exercicios');
$this->addAssociations([
'hasMany' => [
'Atividades' => [
'className' => 'Atividades',
'foreignKey' => 'id_tipo_exercicio',
'bindingKey' => 'id',
'joinType' => 'INNER',
'dependent' => false,
'cascadeCallbacks' => false,
'propertyName' => '_atividades'
]
]
]);
}
}
I'm doing this query:
$circuitos = $CircuitosTable->find('all', [
'conditions' => ['id_plano_treino' => $idPlano],
'contain' => ['Atividades'],
'joins' => [
[
"table" => "Tiposexercicios",
"alias" => "TipoExercicio",
"type" => "INNER",
"conditions" => ["TipoExercicio.id = Atividades.id_tipo_exericio"]
]
]
]);
The expected result:
Select * From Circuitos
JOIN Atividades on Atividades.id_circuito = Circuitos.id
JOIN Tiposexercicios on Tiposexercicios.id = Atividades.id_tipo_exercicio
The submitted query does not work properly. How should do?

Answer 1

hasMany associations are being queried using a separate query, so using contain() to include Atividades will not include the table in the main query.
It looks like you want to filter by associated data, so you can save yourself a lot of trouble by simply using Query::matching() or Query::innerJoinWith(). This will join in associated tables as needed.
The following would create a query similar to what you seem to be looking for:
$circuitos = $CircuitosTable
->find()
->innerJoinWith('Atividades.Tiposexercicios')
->where([
'Circuitos.id_plano_treino' => $idPlano
])
->group('Circuitos.id');
SELECT
-- ...
FROM
circuitos Circuitos
INNER JOIN atividades Atividades
ON Circuitos.id = (Atividades.id_circuito)
INNER JOIN tipos_exercicios Tiposexercicios
ON Tiposexercicios.id = (Atividades.id_tipo_exercicio)
WHERE
Circuitos.id_plano_treino = 123
GROUP BY
Circuitos.id
The grouping is required as you may otherwise receive duplicate results.
See also Cookbook > Database Access & ORM > Retrieving Data & Results Sets > Filtering by Associated Data
On a side note, the table key in the join definition is ment to hold the actual database table name, which, according to your table classes, is tipos_exercicios!