在编辑模式下使用laravel数组表单复选框

Question

This is example form code:

{{Form::checkbox('selection[]', '1')}}
{{Form::checkbox('selection[]', '2')}}
{{Form::checkbox('selection[]', '3')}}
{{Form::checkbox('selection[]', '4')}}

This is example code for saving:

$selection = json_encode(Input::get('selection'));

It will be then save into MySQL table in 'selection' column.

So now, how can I retrieve the data into the form edit mode?

Thanks.

Answer 1

$selections = json_decode($selectionFieldFromDB); // pass it to the view

// then just:
@foreach (range(1,4) as $i)
 {{ Form::checkbox('selection[]', $i, in_array($i, $selections)) }}
@endforeach

Mind that if you have an attribute on your model selection, then Laravel will ignore in_array() part, since it first checks the values on the bound object.

So if you want it to work like I suggested, don't use selection name for the checkboxes if that's the name of your model attribute.