To fix "ERROR: dbpath (/data/db) does not exist." with Node MongoDB, we should make sure the /data/db folder exists.
To do this, we run
sudo mkdir -p /data/db/
to create the /data/db/ folder.
Then we set the current user as the owner of the folder with
sudo chown `id -u` /data/db
To get the latest and oldest record in Node Mongoose.js, we use the sort method.
For instance, we write
Tweet.findOne()
.sort("-created_at")
.exec((err, post) => {
//...
});
to call sort to sort the results by the created_at field in descending order.
Then we get the latest result from post in the callback.
To find Cannot find module ‘bcrypt’ error with Node, we install a few packages.
To fix this, we run
npm install node-gyp -g
npm install bcrypt -g
npm install bcrypt --save
to install node-gyp and bcrypt globally.
Then we run
npm install bcrypt --save
to install bcrypt locally.
To add line breaks in Node Jade, we add a br element.
For instance, we write
p.
Some text on the first line.#[br]
Some text on the second line.
to add the br element with #[br].
To prevent XSS in Node.js, we use the validator module.
For instance, we write
const validator = require("validator");
const escapedString = validator.escape(someString);
to call validator.escape with someString to return an escaped version of someString.