Fixed bugs in member endpoints; Added merge-into member endpoint

app/Http/Requests/V1/Member/MemberMergeIntoRequest.php

@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Requests\V1\Member;
+
+use App\Models\Member;
+use App\Models\Organization;
+use Illuminate\Contracts\Validation\ValidationRule;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Foundation\Http\FormRequest;
+use Korridor\LaravelModelValidationRules\Rules\ExistsEloquent;
+
+/**
+ * @property Organization $organization
+ */
+class MemberMergeIntoRequest extends FormRequest
+{
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array<string, array<string|ValidationRule|\Illuminate\Contracts\Validation\Rule>>
+     */
+    public function rules(): array
+    {
+        return [
+            // ID of the member to which the data should be transferred (destination)
+            'member_id' => [
+                'string',
+                ExistsEloquent::make(Member::class, null, function (Builder $builder): Builder {
+                    /** @var Builder<Member> $builder */
+                    return $builder->whereBelongsTo($this->organization, 'organization');
+                })->uuid(),
+            ],
+        ];
+    }
+
+    public function getMemberId(): string
+    {
+        return (string) $this->input('member_id');
+    }
+}