fix sr_id for geometry while updating record

[mitulgolakiya]

Thanks for this awesome package. It is completely working fine when we create a record. But I got one minor error when we try to update a record. Actually, it's not getting proper sr_id in a query.

Here is the migration that I have created:

Schema::create('locations', function (Blueprint $table) {
    $table->increments('id');
    $table->string('name');
    $table->point('location', 'GEOMETRY', 27700);
    $table->timestamps();
});

This is my Model:

class Location extends Model
{
    use PostgisTrait;

    protected $fillable = [
        'name'
    ];

    protected $postgisFields = [
        'location'
    ];

    protected $postgisTypes = [
        'location' => [
            'geomtype' => 'geometry',
            'srid' => 27700
        ]
    ];
}

And this is how I'm creating and updating record.

$location = new \App\Location();
$location->name = "Location1";
$location->location = new Point(37.422009, -122.084047);;
$location->save();

$createdLocation = \App\Location::find($location->id);
$createdLocation->location = new Point(37.422009, -123.084047);
$createdLocation->save();

dd($createdLocation->toArray());

so while save function, I am getting following error:

SQLSTATE[42804]: Datatype mismatch: 7 ERROR:  column "location" is of type geometry but expression is of type geography
LINE 1: update "locations" set "location" = public.ST_GeogFromText('...
                                            ^
HINT:  You will need to rewrite or cast the expression. (SQL: update "locations" set "location" = public.ST_GeogFromText('POINT(-123.084047 37.422009)'), "updated_at" = 2017-09-16 14:03:47 where "id" = 1)

[coveralls]

Coverage increased (+0.6%) to 84.444% when pulling 8696d9d on InfyOmLabs:master into 278a6c1 on njbarrett:master.

[njbarrett]

Hey @mitulgolakiya thanks for the PR.
It looks like the code needs to handle a null value - have a look at the travis build log.
Thanks!

[coveralls]

Coverage increased (+0.5%) to 84.543% when pulling e465a40 on InfyOmLabs:master into b751206 on njbarrett:master.