在 sendgrid 中发送多个动态模板电子邮件时出现个性化字段错误

Question

我正在尝试使用 Django 中的 Sendgrid 动态模板发送批量 email 并收到此错误： The personalizations field is required and must have at least one personalization.

使用sendgrid 6.9.7

有没有人看到我可能出错的地方：

from django.conf import settings
from sendgrid import SendGridAPIClient
from sendgrid.helpers.mail import Mail, To

def send_mass_email():

    to_emails = [
        To(email='email1@gmail.com',
           dynamic_template_data={
              "thing_i_want_personalized": 'hello email 1',
           }),
        To(email='email2@gmail.com',
           dynamic_template_data={
              "thing_i_want_personalized": 'hello email 2',
           }),
    ]

    msg = Mail(
      from_email='notifications@mysite.com>',
    )
    msg.to_emails = to_emails
    msg.is_multiple = True
    msg.template_id = "d-template_id"

    try:
        sendgrid_client = SendGridAPIClient(settings.SENDGRID_API_KEY)
        response = sendgrid_client.send(msg)
        print(response.status_code)
        print(response.body)
        print(response.headers)
    except Exception as e:
        print(e)
        print(e.body)

    return

output 是

HTTP Error 400: Bad Request
b'{"errors":[{"message":"The personalizations field is required and must have at least one personalization.","field":"personalizations","help":"http://sendgrid.com/docs/API_Reference/Web_API_v3/Mail/errors.html#-Personalizations-Errors"}]}'

Answer 1

Mail class 在使用初始值初始化期间做了一些事情（它根据to_emails设置私有内部值），因此您需要在初始化程序中传递to_emails和is_multiple ，而不是稍后：

from django.conf import settings
from sendgrid import SendGridAPIClient
from sendgrid.helpers.mail import Mail, To

def send_mass_email():
    to_emails = [
        To(email='email1@gmail.com',
           dynamic_template_data={
              "thing_i_want_personalized": 'hello email 1',
           }),
        To(email='email2@gmail.com',
           dynamic_template_data={
              "thing_i_want_personalized": 'hello email 2',
           }),
    ]

    msg = Mail(
      from_email='notifications@mysite.com>',
      to_emails = to_emails,
      is_multiple = True
    )
    msg.template_id = "d-template_id"

    try:
        sendgrid_client = SendGridAPIClient(settings.SENDGRID_API_KEY)
        response = sendgrid_client.send(msg)
        print(response.status_code)
        print(response.body)
        print(response.headers)
    except Exception as e:
        print(e)
        print(e.body)

    return