Laravel variable to where clause

Question

I am trying to extend one app to use my new Laravel app. In this scenario I am getting an unknown number of filters and I would like to forward them all to where() clause.

I have made something like this:

private function filterConverter($filter)
{
    $f = [];
    foreach ($filter as $singleFilter) {
        $operator = $this->filterValues[$singleFilter['operator']];
        $value = $operator == 'like' ? '%' . $singleFilter['value'] . '%' : $singleFilter['value'];

        $f[] = $singleFilter['field'] . ',' . $operator . ',' . $value;
    }

    return $f;
}

The thing is that I am getting operators like EQUALS and CONTAINS so I need to convert them to = and LIKE .

With this code I am trying to do this:

return response(MyModel::where($filter)->get());

But it doesn't work. Is there any elegant way to resolve this?

EDIT/SOLUTION

Sorry to @HCK as I couldn't quite accept the answer since it doesn't answer my question, but it pointed me on the right track. The solution was to use key , operator , value keys in the array instead of what I had "keyless".

private function filterConverter($filters)
{
    $filter = [];
    foreach ($filters as $singleFilter) {
        $operator = $this->filterMap[$singleFilter['operator']];
        $value = $operator == 'LIKE' ? '%' . $singleFilter['value'] . '%' : $singleFilter['value'];

        $filter[] = [
            'key'      => $singleFilter['field'],
            'operator' => $operator,
            'value'    => $value
        ];
    }

    return $filter;
}

Answer 1

You may follow this way

DB::table('users')
        ->where(function($query) use ($filter)
        {
            // You able to access $filter here
            // You may able to to generate this block by loop
            $query->where('votes', '>', 100)
                  ->where('title', '<>', 'Admin');
        })
        ->get();

Laravel Doc | Advanced Wheres

Exp-1

    $filters = [
        ['key' => 'votes', 'operator' => '>', 'value' => 100]
    ];

    DB::table('users')
        ->where(function ($query) use ($filters) {
            foreach ($filters as $filter) {
                if (@$filter['key'] && @$filter['operator'] && @$filter['value']) {
                    $query->where($filter['key'], $filter['operator'], $filter['value']);
                }
            }
        })->get();

Exp-2

    $filters = [
        ['key' => 'votes', 'operator' => '>', 'value' => 100]
    ];

    DB::table('users')
        ->where(function ($query) use ($filters) {
            foreach ($filters as $filter) {
                if (@$filter['key'] && @$filter['operator'] && @$filter['value']) {
                    $query->whereRaw("{$filter['key']} {$filter['operator']} '{$filter['value']}'");
                }
            }
        })->get();

You may also use scope function Ref

Exp-3 Laravel Scope

class User extends Model
{
    public function scopeFilter($query, $filters)
    {
        foreach ($filters as $filter) {
            if (@$filter['key'] && @$filter['value']) {
                $query->where($filter['key'], @$filter['operator']?:"=", $filter['value']);
            }
        }

        return $query;
    }
}

// Use
User::filter($filters)->get();

Answer 2

Not the nicest way to solve it, but this should work:

private function filterConverter($filters)
{
    return collect($filters)->map(function ($filter) {  // <---
        if($filter['operator'] == 'CONTAINS')
        {
            $filter['value'] = '%' . $filter['value'] . '%';
            $filter['operator'] = 'LIKE';
        }
        else if ($filter['operator'] == 'EQUALS')
        {
            $filter['operator'] = '=';
        }

        return collect($filter)->flatten(); // <---
    })->toArray(); // <---
}

Here I'm using the Map() function of the Collection class. there is a lot of useful methods provided by this class.