Laravel collection using map and contains

First, make sure that $unavailableProductions['result'] is a collection.

Second, change your contains method like this:

$unavailableProducts = $this->unavailableProducts();$products = $this->products->all();$allProducts = $products->map(function ($product) use($unavailableProducts) {    return [        'id'            => $product->id,        'title'         => $product->title,        'available'     => $unavailableProducts['result']->contains('id', $product->id),    ];});

The $unavailableProducts['result']->contains('id', $product->id) will determine if the $unaviableProductions['result'] collection has a key id where the value is $product->id

You can try this approach

 $policyPackageDetails = PolicyPackage::where('isactive', '=', 1)->where('id', '=', $pid)            ->with('policy_package_details')            ->select('id',                     'title',                     'subtitle',                     'shorttitle',            )            ->get();        $policyPackageDetails = $policyPackageDetails ->map(function ($item){            return collect([                'id' => $item->id,                'title' => $item->title,                'subtitle' => $item->subtitle,                'short_title' => $item->shorttitle,                'policy_package_details' => $item->policy_package_details->map(function ($details){                    return [                        'attribute_name' => $details->attname,                        'attribute_value' => $details->attvalue,                    ];                }),            ]);        });

here fetching data from relational models, remaining & filtering them, the output will be like

[    {        "id": 61,        "title": " Health (Platinum)",        "subtitle": "for 1 year",        "short_title": "HL-SHP-1",         "policy_package_details": [            {                "attribute_name": "in",                "attribute_value": "180000"            },            {                "attribute_name": "out",                "attribute_value": "20000"            }        ]    }]