Lecture 320:- Display Posts and related User

To display posts and their related users, we need to perform a database query that fetches all posts and their corresponding user information. We can use Mongoose's populate method to fetch the associated user information from the User collection. Here is an example:

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const Post = require('../models/post'); const User = require('../models/user'); // in our controller exports.getPosts = async (req, res) => {  try {    // fetch all posts from the database and populate the user field    const posts = await Post.find().populate('user');    res.render('posts', { posts });  } catch (error) {    console.error(error);    res.status(500).send('Internal Server Error');  } };

Here, we first require the Post and User models that we created earlier. In our controller function, we use the Post.find() method to fetch all posts from the database. Then, we chain the populate('user') method to fetch the corresponding user information for each post. This method populates the user field of each post document with the corresponding User document.

Finally, we render the posts view and pass the posts array as a local variable. In the view, we can access each post and its associated user information using the post and post.user variables, respectively.