相关疑难解决方法(0)

我想知道是否有更简单的方法来实现这个规则.刚开始尝试使用firestore.

match /emails/{emailId} {

    allow write: if request.resource.data.attachments.size() == 0
    || request.resource.data.attachments.size() == 1 && request.resource.data.attachments[0].fileSize < 3 * 1024 * 1024 && (request.resource.data.attachments[0].filetype == 'image/png' || request.resource.data.attachments[0].filetype == 'image/jpg' || request.resource.data.attachments[0].filetype == 'application/vnd.ms-excel')
    || request.resource.data.attachments.size() == 2 && request.resource.data.attachments[0].fileSize < 3 * 1024 * 1024 && (request.resource.data.attachments[0].filetype == 'image/png' || request.resource.data.attachments[0].filetype == 'image/jpg' || request.resource.data.attachments[0].filetype == 'application/vnd.ms-excel') && request.resource.data.attachments[1].fileSize < 3 * 1024 * 1024 && (request.resource.data.attachments[1].filetype == 'image/png' || request.resource.data.attachments[1].filetype == 'image/jpg' || request.resource.data.attachments[1].filetype == 'application/vnd.ms-excel')
    || request.resource.data.attachments.size() …