第31课：自动将 InstaWP 新闻订阅者发送到 Mailchimp

此 GraphQL query 会捕获在 InstaWP（创建新沙箱站点时）勾选了「Subscribe to mailing list」复选框的访客邮箱地址，并将该邮箱地址订阅到 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 MaybeCreateContactOnMailchimp
   @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
  
  mailchimpListMembersJSONObject: _sendJSONObjectItemHTTPRequest(input: {
    url: "https://us7.api.mailchimp.com/3.0/lists/{listCode}/members",
    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 }' );

GraphQL query 的逐步解析

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​GraphQL query 的逐步解析

GraphQL query 的逐步解析