Form with multi array in instance

Hi i need to loop one of my instance like this




for($i=1;$i<=10;$i++){

 $form->field($model, '[$i]children')->textInput(['maxLenght' => 50]) 

}



but how to insert it in my column children ? i want that the children have 10 value in each form and then implode it before to insert in the row…

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try to use fields without model.