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Version: v2.x.x

One to Many

One to Many Relationship​

One to Many​

A one-to-many relationship is used to define relationships where a single model is the parent to one or more child models. For example, a blog post may have an infinite number of comments. Like all other Mongoloquent relationships, one-to-many relationships are defined by defining a method on your Mongoloquent model.

import { Mongoloquent } from "mongoloquent";
import Comment from "./yourPath/Comment";

class Post extends Mongoloquent {
	static collection = "posts";

	static comments() {
		return this.hasMany(Comment, "postId", "_id");
	}
}

Once the relationship method has been defined, we can access the collection of related comments by accessing the comments property in the data property.

import Post from "./yourPath/Post";

const post = await Post.with("comments").find("65ab7e3d05d58a1ad246ee87");

// your relationship data can accessed in the data property
console.log(post.data);

Monggoloquent can also select or exclude certain related model keys

import Post from "./yourPath/Post";

// with select keys
await Post.with("comments", {
	select: ["text"],
}).find("65ab7e3d05d58a1ad246ee87");

// with exclude keys
await Post.with("comments", {
	exclude: ["text"],
}).find("65ab7e3d05d58a1ad246ee87");

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