Laravel whereHas on multiple relationships

Question

Does anyone know if this new feature can be performed on multiple relationships?

For example, I have a query where I want to filter on not only the club name (relate

Answer 1

Yes that's possible.

The generated SQL will probably be:

SELECT * FROM ... WHERE (territory constraint) AND (homeClub constratint) OR (awayClub constraint)

This means that if awayClub constraint is satisfied, the line will be retrieved. I think you want to add a parenthesis to the generated sql:

SELECT * FROM ... WHERE (territory constraint) AND ((homeClub constratint) OR (awayClub constraint))

to do that, you need to nest both queries inside a where:

$ret->with('territory')->with('homeClub')->with('awayClub');
    $ret->whereHas('territory',function( $query ){
        $query->where('region','Australia');
    })
    ->where(function($subQuery)
    {   
        $subQuery->whereHas('homeClub', function ( $query ) {
            $query->where('name', 'Arsenal' );
        })
        ->orWhereHas('awayClub', function ( $query ) {
            $query->where('name', 'Arsenal' );
        });
    });

Answer 2

I don't think you need 'with' as there is 'wherehas'

Model::whereHas('territory',function( $query ){
        $query->where('region','Australia');
    })->whereHas('homeClub', function ( $query ) {
        $query->where('name', 'Arsenal' );
    })->orWhereHas('awayClub', function ( $query ) {
        $query->where('name', 'Arsenal' );
    });

Answer 3

Thanks to being shown in the right direction by edi9999 - I wasn't properly considering parameter grouping

use the main eloquent object in the anonymous function, I placed a whereHas and an orWhereHas constraint on the homeClub and awayClub and that did the trick.

$ret->with('territory')->with('homeClub')->with('awayClub')->with('programme');

    $ret
        ->whereHas('territory',function( $query ) use ( $parameterValues ){
            $query->where('region', $parameterValues['region_names'] );
        })
        ->whereHas('season', function ( $query ) use ( $parameterValues ){
            $query->where('name', $parameterValues['season_names'] );
        })
        ->where( function( $subquery ) use ( $ret ){
            $ret->whereHas('homeClub', function ( $query ){
                $query->where('name','Arsenal' );
            } );
            $ret->orWhereHas('awayClub', function ( $query ){
                $query->where('name','Arsenal');
             });
        });