将 InstaWP 的新闻通讯订阅者注册到 Mailchimp

InstaWP 允许访客启动沙盒站点来测试插件，同时支持订阅新闻通讯：

我们可以通过在模板的「Advanced Options」选项卡中为 InstaWP 提供 Webhook 来捕获这些电子邮件地址：

Webhook 将是一个持久化 Query，使用以下查询。此 Query 捕获访客的电子邮件地址，并将其订阅到 Mailchimp 列表。

query HasSubscribedToNewsletter {
  hasSubscriberOptIn: _httpRequestHasParam(name: "marketing_optin")
  subscriberOptIn: _httpRequestStringParam(name: "marketing_optin")
  isNotSubscriberOptInNAValue: _notEquals(value1: $__subscriberOptIn, value2: "NA")
  subscribedToNewsletter: _and(values: [$__hasSubscriberOptIn, $__isNotSubscriberOptInNAValue])
    @export(as: "subscribedToNewsletter")
}
 
query RegisterNewsletterSubscribeFromInstaWPToMailchimpList(
  # mailchimpDataCenterCode: Code for the data center of your account on Mailchimp (See: https://mailchimp.com/developer/marketing/docs/fundamentals/#api-structure)
  $mailchimpDataCenterCode: String!
  # Audience ID for the list on Mailchimp to which to subscribe the email
  $mailchimpAudienceID: String!
)
   @depends(on: "HasSubscribedToNewsletter")
   @include(if: $subscribedToNewsletter)
{
  subscriberEmail: _httpRequestStringParam(name: "email")
  
  mailchimpUsername: _env(name: "MAILCHIMP_API_CREDENTIALS_USERNAME")
    @remove
  mailchimpPassword: _env(name: "MAILCHIMP_API_CREDENTIALS_PASSWORD")
    @remove
  
  mailchimpAPIEndpoint: _sprintf(
    string: "https://%s.api.mailchimp.com/3.0/lists/%s/members",
    values: [$mailchimpDataCenterCode, $mailchimpAudienceID]
  )
  
  mailchimpListMembersJSONObject: _sendJSONObjectItemHTTPRequest(input: {
    url: $__mailchimpAPIEndpoint,
    method: POST,
    options: {
      auth: {
        username: $__mailchimpUsername,
        password: $__mailchimpPassword
      },
      json: {
        email_address: $__subscriberEmail,
        status: "subscribed"
      }
    }
  })
}

并在 wp-config.php 中定义以下内容：

define( 'MAILCHIMP_API_CREDENTIALS_USERNAME', '{ username }' );
define( 'MAILCHIMP_API_CREDENTIALS_PASSWORD', '{ password }' );

使用此 Webhook，当在 InstaWP 上创建新的测试站点时，若用户注册了新闻通讯，访客的电子邮件地址将自动添加到 Mailchimp 列表：