Form with multi array in instance

Hi i need to loop one of my instance like this


 $form->field($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…

[color="#808080"][color="#C0C0C0"]In every problem there is more than possible answer![/color][/color]

try to use fields without model.