如何在CakePHP 3中使用MVC结构正确地构建代码并在控制器之间进行通信

当我向涉及不同控制器方法的不同数据库表添加多个条目时，如何使用MVC结构正确构建CakePHP 3中的代码?

一般来说，我对编码相当陌生，但我决心找出正确的方法来构建我的代码。

我正在用CakePHP 3建立一个网站，我有一个结帐页面，可以根据会员级别添加1或2个用户，以及处理付款。

checkout方法在my MembershipLevelsController中。该控制器用于不同级别成员的CRUD操作。用户导航到成员列表(索引方法)，选择他们想要的级别，然后将他们发送到该级别的结帐(查看)页面。

因此，这个结帐视图可能有三种形式。1)。用户#1(向用户发布/添加方法)2)。用户#2(向用户发布/添加方法)3)。自定义条纹形式。(张贴到membershipLevels/收费方法)

charge方法将返回的stripe响应数据保存到membership_orders表中。

目前我正在使用ajax和发送用户数据。现在，add方法通常有自己的模板(视图)来添加用户，但我将其设置为添加1或2个用户，并在不同的视图中处理付款。

我不确定这是正确的方式来结构我的代码?用户控制器完成用户信息的所有处理(即任何CRUD操作)似乎是合乎逻辑的。或者，我是否应该在不同的控制器中进行所有的处理例如MembershipLevels控制器或MembershipOrders控制器?

一个参数是，当我将用户数据从membership_levels/checkout视图发送到users/add controller方法时，验证错误被发送到users/add视图。由于我目前使用ajax，我能够注入响应与验证错误意味着用户/添加视图到我的结帐视图，但我不确定这是正确的方式去做吗?

我也走进了死胡同。我还需要能够连接与正在创建的订单创建的第一个(或主)用户帐户(即保存新用户的id到我的membership_orders表中的user_id字段)，但这似乎是不可能的，我越尝试。这就引出了我的第二个论点，即在不同的控制器方法中处理所有信息。

参数二:当添加第一个用户时，我需要一种方法来与我正在工作的控制器通信id号，但我不知道如何做到这一点。似乎我可以在用户信息保存后创建一个变量，其中包含id号，但只有在之后，因为id不知道，直到我保存它对吗?(因为它是自动递增的)

如果我处理订单控制器中的所有内容(因为订单表和用户表由user_id链接)，CakePHP可能会自动添加user_id，但我希望我的代码是DRY的，并且不想重用代码在不同的控制器中添加用户。

MembershipLevels控制器:

private function stripeConfig() {
    $stripe = [
        "secret_key"        => "sk_test",
        "publishable_key"   => "pk_test"
    ];
    $set_key = 'Stripe'Stripe::setApiKey($stripe['secret_key']);
    return [$stripe, $set_key];
}
public function charge() {
    $this->stripeConfig();
    $token = $this->request->data('stripeToken');
    $amount = $this->request->data('billing_amount');
    $customer = 'Stripe'Customer::create(array(
      'email' => $this->request->data('email'),
      'card'  => $token
    ));
    $charge = 'Stripe'Charge::create(array(
      'customer' => $customer->id,
      'amount'   => $amount*100,
      'currency' => 'usd'
    ));
    $orderTable = TableRegistry::get('MembershipOrders');
    $order = $orderTable->newEntity();
    if ($this->request->is('post')) {
        $order = $orderTable->patchEntity($order, $this->request->data);            
        $order->user_id = $this->request->data('user_id'); //Can't even save a hard coded number with a hidden input for this field.
        $order->billing_name = $charge->card->name;
        $order->billing_street = $charge->card->address_line1 . " " . $charge->card->address_line2;
        $order->billing_city = $charge->card->address_city;
        $order->billing_state = $charge->card->address_state;
        $order->billing_zip = $charge->card->address_zip;
        $order->billing_country = $charge->card->address_country;
        $order->subtotal = $charge->amount/100;
        $order->tax = 0;
        $order->total = $charge->amount/100;
        $order->payment_type = $charge->card->funding;
        $order->card_type = $charge->card->brand;
        $order->account_number = "XXXX XXXX XXXX ".$charge->card->last4;
        $order->expiration_month = $charge->card->exp_month;
        $order->expiration_year = $charge->card->exp_year;
        $order->status = $charge->status;
        $order->gateway = "Stripe";
        if ($customer->livemode === true) {
            $order->gateway_environment = 'live';
        } else {
            $order->gateway_environment = 'sandbox';
        }
        $order->subscription_transaction_id = $customer->id;
        $order->payment_transaction_id = $charge->id;
        $order->timestamp = date('Y-m-d H:i:s');
        if ($orderTable->save($order)) {
            $this->Flash->success(__('The order has been saved.'));
        } else {
            $this->Flash->error(__('The order could not be saved. Please, try again.'));
        }
    }
    $this->set(compact('token', 'customer', 'charge'));
}
public function checkout($id = null) {
    $keys = $this->stripeConfig();
    $membershipLevel = $this->MembershipLevels->get($id, [
        'contain' => []
    ]);
    $userTable = TableRegistry::get('users');
    $user = $userTable->newEntity();
    $this->set(compact('keys', 'user', 'membershipLevel'));
    $this->set('_serialize', ['membershipLevel', 'user']);
}

Users/Add Controller Method:

public function add()
{
    $user = $this->Users->newEntity();
    if ($this->request->is('post')) {
        $user = $this->Users->patchEntity($user, $this->request->data);
        if(!empty($this->request->data('role'))) {
            $user->role = $this->request->data('role');
        } else {
            $user->role = 4;
        }
        if( $this->request->data('second_user_added') === '1' ) {
            $user->second_user_added = $this->request->data('second_user_added');
        } else {
            $user->second_user_added = 0;
            $user->code = $this->uniqueToken();
        }
        if( !empty($this->request->data('primary_user')) ) {
            $user->group_id = $this->request->data('username');
        } elseif ( !empty($this->request->data('secondary_user')) ) {
            $user->group_id = $this->request->data('secondary_user');
        }
        if ($this->Users->save($user)) {
            $user_id = $user->id;
            $this->Flash->success(__('You have been added.'));
            return $this->redirect(['controller' => 'pages', 'action' => 'home']);
        } else {
            $this->Flash->error(__('You could not be added. Please, try again.'));
        }
    }
    $this->set(compact('user'));
    $this->set('_serialize', ['user']);
}

MembershipOrdersTable:

public function initialize(array $config)
{
    parent::initialize($config);
    $this->table('membership_orders');
    $this->displayField('id');
    $this->primaryKey('id');
    $this->belongsTo('Sessions', [
        'foreignKey' => 'session_id',
        'joinType' => 'INNER'
    ]);
    $this->belongsTo('Users', [
        'foreignKey' => 'user_id',
        'joinType' => 'INNER'
    ]);
    $this->belongsTo('Memberships', [
        'foreignKey' => 'membership_id',
        'joinType' => 'INNER'
    ]);
}

UsersTable:

public function initialize(array $config)
{
    parent::initialize($config);
    $this->table('users');
    $this->displayField('id');
    $this->primaryKey('id');
    $this->addBehavior('Timestamp');
    $this->hasMany('MembershipOrders', [
       'foreignKey' => 'user_id'
    ]);
}

if ($order_id = $ordersTable->save($order)) {
    $usersTable = TableRegistry::get('Users');
    $query = $usersTable
        ->find('all')
        ->where(['affiliate_token' => $order_id->affiliate_token])
        ->first();
    $order_id->user_id = $query->id;
    $ordersTable->save($order_id);
    $this->Flash->success(__('The order has been saved.'));
}

public function beforeRender(Event $event) {
    $this->set('logged_in', $this->Auth->user('id'));
}

if ($this->Users->save($user)) {
    if( !empty($this->request->data('primary_user')) ) {
        //Make sure no on is logged in already
        if( isset($logged_in) ) {
            $this->Auth->logout();
        } else {
            //Log user in using Auth if primary user
            $this->Auth->setUser($user->toArray());
        }
    }
    $this->Flash->success(__('You have been added.'));
}

if ($this->request->is('post')) {
    $order = $ordersTable->patchEntity($order, $this->request->data);
    if ( isset($logged_in) ) {
        $order->user_id = $logged_in;
    }
    $order->membership_level_id = $this->request->data('membership_level_id');
    etc...
}