How can I update the image array in laravel 5

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PHP

Hai I can't update the image array in my repeater field. In my code if the user select template as "Custom" the repeater fields are displayed with add more button. Each block there will be three field contains one image field. If I update the field image always returns null. cant update the image field.Please help

What I have tried:

Here is my controller code

/* update template */


$datat = Input::all();
$id = $datat['id'];

if($last_updated_id!="")
{
$delete = DB::table('wd_templates')->where('page_id', $last_updated_id)->delete();

for($i = 0; $i < count($datat['template_desc']); $i++)
{

$imageName = str_random(3) . '.' .
$request->file('template_img')[$i]->getClientOriginalExtension();
$request->file('template_img')[$i]->move(base_path() . '/public/uploads/', $imageName);

$data1 = array(
'page_id' => $datat['id'],
'page_template' => $page_template,
'template_desc' => $datat['template_desc'][$i],
'template_img' => $imageName,
'tlink' => $datat['tlink'][$i],
'template_column' => $datat['template_column'][$i],
);

DB::table('wd_templates')->where('page_id', $id)->insert($data1);

}
}
}
\Session::flash('flash_message','Client has been added successfully!');
return Redirect::to('/admin/listpage')->with('pages');


Here is my view

@foreach($template as $data)

@endforeach