How to bind parameters to a raw DB query in Laravel that's used on a model?

Question

Re,

I have the following query:

$property = 
    Property::select(
        DB::raw("title, lat, lng, ( 
            3959 * acos( 
                cos( radians(:lat) ) * 
                cos( radians( lat ) ) * 
                cos( radians( lng ) - radians(:lng) ) + 
                sin( radians(:lat) ) * 
                sin( radians( lat ) ) 
            ) 
        ) AS distance", ["lat" => $lat, "lng" => $lng, "lat" => $lat])
    )
    ->having("distance", "<", $radius)
    ->orderBy("distance")
    ->take(20)
    ->get();

It doesn't work: Invalid parameter number: mixed named and positional parameters.

Does anyone know a trick or a workaround (I can obviously write the full query but prefer to use fluent builder).

Answer 1

OK, after some experimenting, here's the solution that I came up with:

$property = 
    Property::select(
        DB::raw("title, lat, lng, ( 
            3959 * acos( 
                cos( radians(  ?  ) ) *
                cos( radians( lat ) ) * 
                cos( radians( lng ) - radians(?) ) + 
                sin( radians(  ?  ) ) *
                sin( radians( lat ) ) 
            )
       ) AS distance")
    )
    ->having("distance", "<", "?")
    ->orderBy("distance")
    ->take(20)
    ->setBindings([$lat, $lng, $lat,  $radius])
    ->get();

Basically, setBindings has to be called on the query. Wish this was documented!