Comment mettre à jour un tableau croisé dynamique à l'aide de Éloquente dans laravel 5

Le code ci-dessous résolu mon problème:

$messages  = Message::where('message_id', $id)->get();
foreach($messages as $message)
   $message->users()->updateExistingPivot($user, array('status' => 1), false);

Laravel 5.8

Tout d'abord, permettre à votre pivot colonnes pour être consultable par le chaînage de la withPivot méthode à votre belongsToMany

Copié à partir de mon propre code pour gagner du temps

// I have 3 columns in my Pivot table which I use in a many-to-many and one-to-many-through scenarios

$task = $user->goalobjectives()->where(['goal_objective_id'=>$goal_objective_id,'goal_obj_add_id'=>$goal_obj_add_id])->first(); //get the first record

$task->pivot->goal_objective_id = $new; //change your col to a new value

$task->pivot->save(); //save

Le problème, c'est que votre tableau croisé dynamique a besoin d'avoir un primaire 'id' clé.

Si vous ne voulez pas cela, alors vous pouvez essayer ce qui suit:

$tasks=$user->posts()->where(['posts_id'=>$posts_id,'expires'=>true])->get()->pluck('id'); // get a collection of your pivot table data tied to this user

$key=join(",",array_keys($tasks->toArray(),$valueYouWantToRemove));

$tasks->splice($key,1,$newValueYouWantToInsert);

$c = array_fill(0,$tasks->count(),['expires'=>true]); //make an array containing your pivot data

$newArray=$tasks->combine($c) //combine the 2 arrays as keys and values

$user->posts()->sync($newArray); //your pivot table now contains only the values you want

4ème mise à Jour juillet mise à Jour à l'extrait ci-dessus.

//Ideally, you should do a check see if this user is new
//and if he already has data saved in the junction table
//or are we working with a brand new user
$count = $user->goalobjectives->where('pivot.goal_obj_add_id',$request->record)->count();
//if true, we retrieve all the ids in the junction table 
//where the additional pivot column matches that which we want to update
if($count) {
$ids = $user->goalobjectives->where('pivot.goal_obj_add_id',$request->record)->pluck('id');
//convert to array
$exists = $ids->toArray();
//if user exists and both saved and input data are exactly the same
//there is no need
//to update and we redirect user back
if(array_sum($inputArray) == array_sum($exists)) {
//redirect user back
}
//else we update junction table with a private function
//called 'attachToUser'
$res = $this->attachToUser($user, $inputArray, $ids, $request->record);
}//end if
elseif(!$count) {
//we are working with a new user
//we build an array. The third pivot column must have equal rows as
//user input array
$fill = array_fill(0,count($inputArray),['goal_obj_add_id'=>$request->record]);
//combine third pivot column with user input
$new = array_combine($inputArray,$fill);
//junction table updated with 'user_id','goal_objective_id','goal_obj_add_id'
$res = $user->goalobjectives()->attach($new);
//redirect user if success
}
//our private function which takes care of updating the pivot table
private function attachToUser(User $user, $userData, $storedData, $record) {
//find the saved data which must not be deleted using intersect method
$intersect = $storedData->intersect($userData);
if($intersect->count()) {
//we reject any data from the user input that already exists in the database
$extra = collect($userData)->reject(function($value,$key)use($intersect){
return in_array($value,$intersect->toArray());
});
//merge the old and new data
$merge = $intersect->merge($extra);
//same as above we build a new input array
$recArray = array_fill(0,$merge->count(),['goal_obj_add_id'=>$record]);
//same as above, combine them and form a new array
$new = $merge->combine($recArray);
//our new array now contains old data that was originally saved
//so we must remove old data linked to this user
// and the pivot record to prevent duplicates
$storedArray = $storedData->toArray();
$user->goalobjectives()->wherePivot('goal_obj_add_id',$record)->detach($storedArray);
//this will save the new array without detaching
//other data previously saved by this user
$res = $user->goalobjectives()->wherePivot('goal_obj_add_id',$record)->syncWithoutDetaching($new);
}//end if
//we are not working with a new user
//but input array is totally different from saved data
//meaning its new data
elseif(!$intersect->count()) {
$recArray = array_fill(0,count($userData),['goal_obj_add_id'=>$record]);
$new = $storedData->combine($recArray);
$res = $user->goalobjectives()->wherePivot('goal_obj_add_id',$record)->syncWithoutDetaching($new);
}
//none of the above we return false
return !!$res;
}//end attachToUser function

Ce sera le travail pour le tableau croisé dynamique qui n'ont pas de primaire incrément automatique de l'id. sans un incrément automatique de l'id, l'utilisateur ne peut pas mettre à jour,insérer,supprimer une ligne dans le tableau croisé dynamique en accédant directement.