Laravel - 在Polymorphic Relationship上不是唯一的表/别名

I have three tables, they are :

Contacts

• contact_name
• contact_email
• contact_phone

Locations

• location_name
• location_country

Association Contacts

• association_contact_id
• association_contacts_id
• contacts_type

In my models, I've set the Polymorphs...

AssociationContact

public function contact()
{
    return $this->morphTo();
}

Client

public function contact()
{
    return $this->morphToMany(
    // the related model
        'App\Models\AssociationContact',
        // the relationship name
        'contact',

        // the table name, which would otherwise be derived from the relationship name - twowordables
        'association_contacts',

        // the foreign key will be twowordable_id, derived from the relationship name, which you're adhering to
        'association_contact_id',

        // the 'other' key, which would otherwise be derived from the related model's snake case name - two_word_id
        'association_contacts_id'
    );
}

When running the following code :

$clients = Client::all();
foreach($clients as $client)
{
  echo "<pre>";
  print_r($client->contact);
  echo "</pre>";
}

I get the following error :

Syntax error or access violation: 1066 Not unique table/alias: 'association_contacts' (SQL: select `association_contacts`.*, `association_contacts`.`association_contact_id` as `pivot_association_contact_id`, `association_contacts`.`association_contacts_id` as `pivot_association_contacts_id`, `association_contacts`.`contact_type` as `pivot_contact_type` from `association_contacts` inner join `association_contacts` on `association_contacts`.`id` = `association_contacts`.`association_contacts_id` where `association_contacts`.`association_contact_id` = 7 and `association_contacts`.`contact_type` = App\Models\Client)

It must be how I've set up the model relations, But not sure what I've done wrong.

Cheers

Put this in AssociationContact:

public function contact()
{
    return $this->morphTo(null,'contacts_type','association_contacts_id');
}

Change the relationship in your Client table to this:

public function contact()
{
     return $this->morphMany('App\Models\Contact','contact','contacts_type','association_contacts_id');
    }

This should work.