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mongoose - MongoDB how to access pre existing collections?

If I already have some collections with some data then how to access them without knowing the "Schema" of those collections? Because when I try to define schema for those collection it gives me error "Cannot overwrite model once compiled Mongoose".

Someone suggested this so this is what I'm trying to do.

mongoose.model("post", new Schema({}), "posts");

But still I'm getting errors, someone also suggested this method.

const connection = await mongoose.connect("..");
connection.db.collection("posts").find({});

This gives me error "property collection doesn't exist".

I'm stuck and don't know how to access pre-existing collections.

Please help, thank you.

question from:https://stackoverflow.com/questions/65948576/mongodb-how-to-access-pre-existing-collections

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