Node.js, MongoDB, and AngularJS Web Development

Setting Query Database Operation

Each Query object must have a database operation associated with it. The database operation determines what action to take when connecting to the database—from finding documents to storing them. There are two ways to assign a database operation to a Query object. One is to call the operation from the Model object and not specify a callback. The Query object returned has that operation assigned to it. For example:

var query =  model.find();

Once you already have a Query object, you can change the operation that is applied by calling the method on the Query object. For example, the following code creates a Query object that first applies a count() operation and then a find() operation. The where() clause is applied ...