使用带有Laravel的Ajax从数据库中检索信息

Question

I am just migrating from traditional PHP to Laravel framework using the MVC concept. I want to be able to fetch data from the database based on the selection made from a dropdown list box. I keep getting this error: " Sorry, the page you are looking for could not be found. (1/1) NotFoundHttpException ".

See my code: Route File:

Route::get('/process-grpid','PagesController@processgrpid');

my Controller action code:

public function processgrpid($pno){
        $pno = $request->get('pno');
        $det = Stock::where('itemName',$pno)->get();
        return $det;       
    }

my view page:

<script type="text/javascript">
$(document).ready(function() { 
    $("select.partno").change(function(){
        var selectedPno = $(".partno option:selected").val();
       $.ajax(
           {
               type: "get",
                url:"/processgrpid",
               data:{pno:selectedPno},

               success:function(data){
                  // var det = JSON.parse(data);
                $("#desc").html('<input type="text"  placeholder="Enter Item Description" class="form-control" name="descr" required="required"/>');
               }
            }
        );

    });
});
    </script>


 <table>
     <tr>
              <th>Item Code/Part NO:</th>
                <td>
                <select name="partno" class="partno form-control">
                <option>Select PartNo</option>
                <option value="N/A">N/A</option>
                @foreach($pstock as $stock)
                <option value="{{ $stock->itemName }}">{{ $stock->itemName }}</option>
                @endforeach
                </select></td>
                 <th>Description:</th>
                  <td id="desc"></td></tr>
                 <tr>
    </table>

I don't know what am doing wrong. I have checked stackoverflow, but non of the soution meet my needs. All i wanted is to get the description of stock item from the database based on the dropdown list of partno. Please, help me look and guide me accordingly .

Answer 1

You made a minor mistake in calling route through ajax request.

Change url:"/processgrpid" to url:"/process-grpid" .

Reason: As you defined route as

Route::get('/process-grpid','PagesController@processgrpid');

So now public url will be process-grpid instead of controller function processgrpid .

Also update controller function as:

public function processgrpid(Request $request) {
    $pno = $request->get('pno');
    $det = Stock::where('itemName', $pno)->get();
    return $det;
}

Answer 2

you should pass $request to your controller as below:

public function processgrpid(Request $request){
        $pno = $request->pno;
        $det = Stock::where('itemName',$pno)->get();
        return $det;       
    }