trackbugs/app/Policies/ProjectPolicy.php

<?php

namespace App\Policies;

use App\Models\Project;
use App\Models\User;
use Illuminate\Auth\Access\Response;

class ProjectPolicy
{
    /**
     * Determine whether the user can view any models.
     */
    public function viewAny(User $user): bool
    {
        return true;
    }

    /**
     * Determine whether the user can view the model.
     */
    public function view(User $user, Project $project): bool
    {
        return $project->users()->where('users.id', $user->id)->exists();
    }

    /**
     * Determine whether the user can create models.
     */
    public function create(User $user): bool
    {
        return true;
    }

    /**
     * Determine whether the user can update the model.
     */
    public function update(User $user, Project $project): bool
    {
        return $this->hasRole($user, $project, ['owner', 'admin']);
    }

    /**
     * Determine whether the user can delete the model.
     */
    public function delete(User $user, Project $project): bool
    {
        return $this->hasRole($user, $project, ['owner']);
    }

    /**
     * Determine whether the user can manage members.
     */
    public function manageMembers(User $user, Project $project): bool
    {
        return $this->hasRole($user, $project, ['owner', 'admin']);
    }

    /**
     * Determine whether the user can manage settings.
     */
    public function manageSettings(User $user, Project $project): bool
    {
        return $this->hasRole($user, $project, ['owner', 'admin']);
    }

    /**
     * Check if user has one of the specified roles for the project
     */
    private function hasRole(User $user, Project $project, array $roles): bool
    {
        $userRole = $project->users()
            ->where('users.id', $user->id)
            ->first()
            ?->pivot
            ?->role;

        return $userRole && in_array($userRole, $roles);
    }
}