Schema Types, String, Number, Date, ObjectId

All Schema Types

• required: boolean or function, if true adds a required validator for this property
• default: Any or function, sets a default value for the path. If the value is a function, the return value of the function is used as the default.
• select: boolean, specifies default projections for queries
• validate: function, adds a validator function for this property
• get: function, defines a custom getter for this property using Object.defineProperty().
• set: function, defines a custom setter for this property using Object.defineProperty().
• alias: string, mongoose >= 4.10.0 only. Defines a virtual with the given name that gets/sets this path.
• immutable: boolean, defines path as immutable. Mongoose prevents you from changing immutable paths unless the parent document has isNew: true.
• transform: function, Mongoose calls this function when you call Document#toJSON() function, including when you JSON.stringify() a document.

String

• lowercase: boolean, whether to always call .toLowerCase() on the value
• uppercase: boolean, whether to always call .toUpperCase() on the value
• trim: boolean, whether to always call .trim() on the value
• match: RegExp, creates a validator that checks if the value matches the given regular expression
• enum: Array, creates a validator that checks if the value is in the given array.
• minLength: Number, creates a validator that checks if the value length is not less than the given number
• maxLength: Number, creates a validator that checks if the value length is not greater than the given number
• populate: Object, sets default populate options

Number

• min: Number, creates a validator that checks if the value is greater than or equal to the given minimum.
• max: Number, creates a validator that checks if the value is less than or equal to the given maximum.
• enum: Array, creates a validator that checks if the value is strictly equal to one of the values in the given array.
• populate: Object, sets default populate options

Date

• min: Date
• max: Date

ObjectId

• populate: Object, sets default populate options

Mongoose v6.0.14: Query Population

 

예)

const videoSchema = mongoose.Schema({
    title: { type: String, required: true, uppercase: true, trim: true, maxLength: 80 },
    description: { type: String, required: true, trim: true, minLength: 20 },