MongoDB JSON Schema Draft 4 - $jsonSchema
A type definition of the JSON schema used in $jsonSchema operator in a mongodb collection validator.
https://www.mongodb.com/docs/manual/reference/operator/query/jsonSchema/
Create a collection with validation
https://www.mongodb.com/docs/v6.2/core/schema-validation/update-schema-validation/#steps
db.createCollection("users", {
validator: {
$jsonSchema: {
bsonType: "object",
required: ["username", "password"],
properties: {
username: {
bsonType: "string",
description: "must be a string and is required",
},
password: {
bsonType: "string",
minLength: 8,
description: "must be a string at least 8 characters long, and is required",
},
},
},
},
});Modify the validation schema
db.runCommand({
collMod: "users",
validator: {
$jsonSchema: {
bsonType: "object",
required: ["username", "password"],
properties: {
username: {
bsonType: "string",
description: "must be a string and is required",
},
password: {
bsonType: "string",
minLength: 12,
description: "must be a string of at least 12 characters, and is required",
},
},
},
},
});