我试图做类似以下事情:
rel=“nofollow”http://mongoosejs.com/docs/内含-documents.html
然而,不是试图取回新的BlogPost Im,而是添加如下内容:
function addComment(id, comment, callback) {
Post.findOne(id, function(err, post) {
post.comments.push(comment);
});
}
I m 正在
TypeError: Cannot call method call of undefined
我做了什么错误? 我从储蓄法中排除了简化规则,即使没有努力储蓄,也正在坠毁。
假设<代码>id参数为目的 缩略语 1 。
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