attachMany method

Future<List<int>> attachMany(List<RelationshipModel> models, { Map<String, Object?>? extras, })

Create records in pivot table and return a list of added indexes.

var classroom = Class();
var query = await classroom.getStudents();

await query.attachMany([Student(),Student()]);

Implementation

Future<List<int>> attachMany(List<RelationshipModel> models,
    {Map<String, Object?>? extras}) async {
  if (query == null) {
    throw Exception('cannot query without relationship');
  }

  if (_pivotTable == null) {
    throw Exception('Unknown Pivot table');
  }

  if (models.isEmpty) {
    throw Exception('Empty models');
  }

  var initialParentValue = primaryValue;
  var database = await eloquent.getDatabase;

  List<int> indexes = [];
  for (var model in models) {
    var relatedParentValue = model.primaryValue;

    Map<String, Object?> values = {
      "$_initialForeignKey": initialParentValue,
      "$_relatedForeignKey": relatedParentValue,
      if (extras != null) ...extras,
    };
    indexes.add(await database.insert(_pivotTable!, values));
  }

  return indexes;
}