How to add data to a model in a loop in Yii2?

Question

Yii

Hello. The essence of the problem on the fingers is as follows:
1. There are goods
2. There are technical characteristics
There can be many characteristics for one product.
I created a form from two models, the number of characteristics can be increased or decreased using js, the generated name for each new field looks like this:

name='TechSpec[0][title]'

name='TechSpec[1][title]'

A model-based object is created like this:

$techSpech = [new common\models\TechSpec]

/*
* потом loadMultiply при загрузке возвращает false если больше чем одна характеристика 
* добавлена 
* При удачной загрузке беру длину массива и циклом создавая новые объекты сохраняю      
* новые данные по индексу
*
*/

Plus, I can’t figure out how to defeat validation in new fields created using js
“Smoked” the first four pages of Google, a lot of examples on update, but not a single one on create,
I can’t understand what is my mistake?
Thanks in advance.

Answer 1

Here's the first step , here's the second step

Answer 2

1. How do update examples differ from create if the save() method is both there and there, if you use the update() method, it’s another matter, but there is hardly a lot of information about it in google.
2

$techSpech = [new common\models\TechSpec]

-what is this? Why not $techSpech = new common\models\TechSpec();?
3. add the beforeSave method to the product model, iterate over your characteristics using the banal foreach and save.