Mongoose for Application Development

Data types allowed in schemas

There are eight types of data that can—by default—be set in a Mongoose schema. These are also referred to as SchemaTypes; they are:

• String
• Number
• Date
• Boolean
• Buffer
• ObjectId
• Mixed
• Array

The first four SchemaTypes are self-explanatory, but let's take a quick look at them all.

String

This SchemaType stores a string value, UTF-8 encoded.

Number

This SchemaType stores a number value, with restrictions. Mongoose does not natively support long and double datatypes for example, although MongoDB does. However, Mongoose can be extended using plugins to support these other types. See Chapter 11, Plugins – Re-using Code for more on plugins.

Date

This SchemaType holds a date and time object, typically returned from MongoDB as an ISODate object, ...