How to Alias one of the table sql in cakephp 3.6.3 - sql

Question

I'm trying to access Contacts. I'm getting below error
Error: SQLSTATE[42000]: Syntax error or access violation: 1066 Not unique table/alias: 'Contacts'
If you are using SQL keywords as table column names, you can enable identifier quoting for your database connection in config/app.php.
Check SQL Query Screenshot
How do I setAlias() in table associations ?
ContactsController.php
public function index()
{
$this->paginate = [
'contain' => ['Users', 'Contacts', 'SourceProspects', 'Status',
'Secteurs', 'Products']
];
$contacts = $this->paginate($this->Contacts);
$this->set(compact('contacts'));
}
public function view($id = null)
{
$contact = $this->Contacts->get($id, [
'contain' => ['Users', 'Contacts', 'SourceProspects', 'Status',
'Secteurs', 'Products', 'Leads', 'Accounts']
]);
$this->set('contact', $contact);
}
ContactsTable.php
$this->setTable('contacts');
$this->setDisplayField('name');
$this->setPrimaryKey('id');
$this->addBehavior('Timestamp');
$this->belongsTo('Users', [
'foreignKey' => 'user_id'
]);
$this->belongsTo('Contacts', [
'foreignKey' => 'contact_type_id'
]);
$this->belongsTo('Leads', [
'foreignKey' => 'lead_id'
]);
$this->belongsTo('SourceProspects', [
'foreignKey' => 'source_prospect_id'
]);
$this->belongsTo('Accounts', [
'foreignKey' => 'account_id'
]);
$this->belongsTo('Status', [
'foreignKey' => 'statut_id'
]);
$this->belongsTo('Secteurs', [
'foreignKey' => 'secteur_id'
]);
$this->belongsTo('Products', [
'foreignKey' => 'product_id'
]);
$this->hasMany('Accounts', [
'foreignKey' => 'contact_id'
]);
$this->hasMany('Leads', [
'foreignKey' => 'contact_id'
]);
}

Answer 1

The problem seems to be in ContractsTable here
$this->belongsTo('Contacts', [
'foreignKey' => 'contact_type_id'
]);
in this way cake join the Contacts table with itself so creating a non unique alias
maybe is just a typo and you wanted to do
$this->belongsTo('ContactTypes', [
'foreignKey' => 'contact_type_id'
]);
but if you actually want to use that relationship then you have to alias the joined Contacts table
$this->belongsTo('ParentContacts', [ // choose your alias here
'className' => 'Contacts'
'foreignKey' => 'contact_type_id'
]);
so every time you have to refer to the joined table you can do something like
'contain' => [
...,
'ParentContacts',
],