Gathering all posts related to jagi astronomy

Question

Gathering all posts related to jagi astronomy

Within my MongoDB database, I have a collection called "post." My goal is to extract all post IDs that are not disabled from this collection. To achieve this, I utilized Jagi Astronomy, a Meteor JS package, to create the schema. However, when I implemented the following code:

let post=Post.findOne({'disabled':false});
console.log(post._id);

The output only displayed the ID of one post, rather than all.

Subsequently, when I tried:

let post=Post.find({'disabled':false});
console.log(post._id)

The result was undefined. Any assistance would be greatly appreciated!

javascript mongodb meteor

Answer 1

Answer №1

The reason you are receiving "undefined" is because find() sends back a cursor, which does not immediately interact with the database or provide documents. Cursors offer methods like fetch() to return all relevant documents, map() and forEach() for iterating through matching documents, as well as observe and observeChanges for handling changes in the set of matching documents.

To resolve this issue, you should apply fetch() on the cursor to receive all matching documents as an Array, like this:

let posts=Post.find({'disabled':false}).fetch();
console.log(posts[0]._id) // log the first element in the results set

Alternatively, you can utilize forEach() to iterate through the cursor:

Post.find({'disabled':false}).forEach(post => console.log(post._id));

Answer 2

The reason you are receiving "undefined" is because find() sends back a cursor, which does not immediately interact with the database or provide documents. Cursors offer methods like fetch() to return all relevant documents, map() and forEach() for iterating through matching documents, as well as observe and observeChanges for handling changes in the set of matching documents.

To resolve this issue, you should apply fetch() on the cursor to receive all matching documents as an Array, like this:

let posts=Post.find({'disabled':false}).fetch();
console.log(posts[0]._id) // log the first element in the results set

Alternatively, you can utilize forEach() to iterate through the cursor:

Post.find({'disabled':false}).forEach(post => console.log(post._id));

Gathering all posts related to jagi astronomy

Answer №1

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