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This is my scheme:
var documentSchema = mongoose.Schema({
'facts': [{
'type': { type: String, required: true, uppercase: true, enum: ['TEXT'], default: 'TEXT'},
'label': { type: String },
'value': { type: String }
}],
'type': { type: String, required: true, uppercase: true, enum: ['TEXT', 'MARKDOWN', 'JSON'], default: 'TEXT'},
'lastModified': { type: Date, required: true, default: Date.now },
'created': { type: Date, required: true, default: Date.now }
}, {
versionKey: 'version'
});
var DocumentModel = mongoose.model('Document', documentSchema);
I can get enums with:
DocumentModel.schema.path('type').enumValues,
But not with:
DocumentModel.schema.path('facts.type').enumValues,
I get TypeError: Cannot read property 'enumValues' of undefined. What am I doing wrong?
496
Mongoose has several inbuilt validators. Strings have enum as one of the validators. So enum creates a validator and checks if the value is given in an array. E.g: const userSchema = new mongoose. Schema({ userType: { type: String, enum : ['user','admin'], default: 'user' }, })
The ref option is what tells Mongoose which model to use during population, in our case the Story model. All _id s we store here must be document _id s from the Story model. Note: ObjectId , Number , String , and Buffer are valid for use as refs.
mongoose. model() returns a Model ( It is a constructor, compiled from Schema definitions).
Mongoose Schema vs. Model. A Mongoose model is a wrapper on the Mongoose schema. A Mongoose schema defines the structure of the document, default values, validators, etc., whereas a Mongoose model provides an interface to the database for creating, querying, updating, deleting records, etc.
Sometimes, we want to create and use enums in Mongoose. In this article, we’ll look at how to create and use enums in Mongoose. How to create and use enums in Mongoose? To create and use enums in Mongoose, we can set the enum property when we create our schema. to create the UserSchema with the userType column.
A Mongoose ‘schema’ is a document data structure (or shape of the document) that is enforced via the application layer. ‘Models’ are higher-order constructors that take a schema and create an instance of a document equivalent to records in a relational database.
Also, it's worth noting that mongoose currently does not support TypeScript, we're planning to have official TypeScript definitions in version 5.11. Mongoose doesn't have built-in support for TypeScript enums, and it really can't because TypeScript enums are just POJOs at runtime.
You can get the enum possible values in a MySQL database with the help of INFORMATION_SCHEMA.COLUMNS table. The syntax is as follows − To understand the above syntax, let us create a table with an ENUM data type.
Since facts is an array with an embedded schema you will need to access that schema first and then you can get the enum values in the same manner you did with type.
DocumentModel.schema.path('facts').schema.path('type').enumValues
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