Laravel Input::all() fetching one row only

I have a form with a table example

Name | Review | Rating | Status

This table may have multiple rows and only Status is editable which is a dropdown field

I am able to show all the data, But when I save using code below, I notice that dd is only showing one row. When I save , one row is saved and then an error is displayed. Error:

ErrorException in DashBoardController.php line 432: Creating default object from empty value

where line number 432 is : $approved_reviews->approved= $status1

Below is my code snippet. Please help.

$approve_reviews = Input::except('_token');          

foreach ($approve_reviews as $review_id) {
    $approved_reviews = dealer_reviews::where('id',$review_id )->first();
    $status1 = Input::get('status');
    $approved_reviews->approved= $status1;

    $approved_reviews->save();
}

I have also tried Input::all(), but dd shows just one row.

My Form Code

@if(isset($pending_reviews))
       {!! Form::open(array('action' => array('DashBoardController@ApproveReviews' ), 'class'=>'form','files' => true,'data-toggle' => 'validator' ,'id'=>'edit_form')) !!}
       <div class="table-responsive">
         <table class="table table-hover table-condensed table-bordered">
          <thead>
            <tr class="danger">
              <td>
               <p style="font-weight:500;font-size:1.0em;"> Dealership Name </p>
              </td>
              <td>
                <p style="font-weight:500;"> Review </p>
              </td>
              <td>
                <p style="font-weight:500;"> Rating</p>
              </td>
              <td>
                <p style="font-weight:500;"> Suggestion</p>
              </td>
              <td>
                <p style="font-weight:500;"> Status </p>
              </td>
            <tr>

          </thead>

                  @foreach($pending_reviews as $p_review)
          <tr class="active">
              <td>
               <p style="font-weight:500;font-size:1.0em;"> {{$p_review-> dealership_name}} </p>
               <input type="hidden" value={{$p_review-> id}} name="review_id">

              </td>
              <td>
                <p style="font-weight:500;font-size:1.0em;"> {{$p_review-> review}} </p>
              </td>
              <td>
                <p style="font-weight:500;font-size:1.0em;"> {{$p_review-> rating}} </p>
              </td>
              <td>
                <p style="font-weight:500;font-size:1.0em;"> {{$p_review-> suggestions}} </p>
              </td>
              <td>
                <p style="font-weight:500;font-size:1.0em;"> 
                 <select name="status">
            <option value="0">Pending</option>
             <option value="1">Approve</option>

        </select> 
                 </p>
              </td>

            <tr>
               @endforeach

         </table>
      </div>

       <input  type='submit' class="btn btn-success" name='Save' value='Submit' />
        {!! Form::close() !!}
        @else
        <h3> No Pending Reviews </h3>
        @endif