[英]How to delete comment that is nested in Post schema with mongoose and nodejs?
我希望能够删除帖子 model 中的评论。
这是我发布 model 的架构:
const PostSchema = new Schema({
userID: {
type: Schema.Types.ObjectId,
ref: 'user'
},
content: {
type: String,
required: true
},
registration_date: {
type: Date,
default: Date.now
},
likes: [
{
type: Schema.Types.ObjectId,
ref: "user"
}
],
comments: [
{
text: String,
userID: {
type: Schema.Types.ObjectId,
ref: 'user'
}
}
]
})
我有这条路线:
router.delete('/comment/:id/:comment_id', auth, async (req, res) => {
const postId = req.params.id
const commentId = req.params.comment_id
}
帖子中的评论如下所示:
comments: [
{
_id: 5f1df4cf5fd7d83ec0a8afd8,
text: 'comment 1',
userID: 5efb2296ca33ba3d981398ff
},
{
_id: 5f1df4d35fd7d83ec0a8afd9,
text: 'commnet 2',
userID: 5efb2296ca33ba3d981398ff
}
]
我想删除评论,不知道怎么做。 有谁知道该怎么做?
首先我们通过findByIdAndUpdate
找到帖子,然后我们使用$pull
从评论数组中删除评论。
router.delete("/comment/:id/:comment_/id", async function (req, res) {
try {
const post = await Post.findByIdAndUpdate(
req.params.id,
{
$pull: { comments: {_id:req.params.comment_id}},
},
{ new: true }
);
if (!post) {
return res.status(400).send("Post not found");
}
} catch (err) {
console.log(err);
res.status(500).send("Something went wrong");
}
});
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