php - Laravel, sync() - how to sync an array and also pass additional pivot fields?

Question

Official Laravel documentation has this on sync() function:

$user->roles()->sync( array( 1, 2, 3 ) );

You may also associate other pivot table values with the given IDs:

$user->roles()->sync( array( 1 => array( 'expires' => true ) ) );

In the latter example only a single pivot row is being added. What I don't understand is how can I associate other pivot table records if there are more than one rows to be synced?

Thanks in advance.

Answer 1

In order to sync multiple models along with custom pivot data, you need this:

$user->roles()->sync([ 
    1 => ['expires' => true],
    2 => ['expires' => false],
    ...
]);

Ie.

sync([
    related_id => ['pivot_field' => value],
    ...
]);

---

edit

Answering the comment:

$speakers  = (array) Input::get('speakers'); // related ids
$pivotData = array_fill(0, count($speakers), ['is_speaker' => true]);
$syncData  = array_combine($speakers, $pivotData);

$user->roles()->sync($syncData);