I am using migrate-mongo for managing my database migration and I am trying to create a new migration that create a collection with a validator and insert values in it. I want to use a UUID for the _id property and I am using the uuid-mongodb library to generate it. My problem is that I am not able to set the bsonType of my _id in the validator without causing the data insertion failure. Is there any way to make sure that the id of the documents inserted in the collection is a UUID? I know that mongoose could help me to solve this issue, but I would like the validation to be done at the database level. Also, when I do not specify the _id's bsonType in the validator, the insertion works, it fails validation only when I specify it.
Here is my migration code
const MUUID = require("uuid-mongodb");
module.exports = {
async up(db) {
//Will use https://docs.mongodb.com/manual/tutorial/model-tree-structures-with-materialized-paths/
await db.createCollection("itemCategories", {
validator: {
$jsonSchema: {
required: ["name"],
bsonType: "object",
properties: {
_id: {"object"}, //I also tried with binData
name: {
bsonType: "string",
maxLength: 50,
},
path: {
bsonType: ["string", "null"],
pattern: "^,([^,]+,)+$"
}
},
additionalProperties: false,
}
},
});
await db.collection("itemCategories").createIndex({"name": 1}, {unique: true});
await db.collection("itemCategories").insertMany([
{_id: MUUID.v4(), name: "Sport", path: null},
{_id: MUUID.v4(), name: "Tool", path: null},
{_id: MUUID.v4(), name: "Entertainment", path: null}
]);
},
async down(db) {
await db.dropCollection("itemCategories");
}
};
And here is the error I get when running it
ERROR: Could not migrate up 20210627041314-create-categories.js: Document failed validation BulkWriteError: Document failed validation
at OrderedBulkOperation.handleWriteError (C:\Users\username\projectDirectory\node_modules\mongodb\lib\bulk\common.js:1352:9)
at resultHandler (C:\Users\username\projectDirectory\node_modules\mongodb\lib\bulk\common.js:579:23)
at handler (C:\Users\username\projectDirectory\node_modules\mongodb\lib\core\sdam\topology.js:943:24)
at C:\Users\username\projectDirectory\node_modules\mongodb\lib\cmap\connection_pool.js:350:13
at handleOperationResult (C:\Users\username\projectDirectory\node_modules\mongodb\lib\core\sdam\server.js:558:5)
at MessageStream.messageHandler (C:\Users\username\projectDirectory\node_modules\mongodb\lib\cmap\connection.js:281:5)
at MessageStream.emit (events.js:321:20)
at processIncomingData (C:\Users\username\projectDirectory\node_modules\mongodb\lib\cmap\message_stream.js:144:12)
at MessageStream._write (C:\Users\username\projectDirectory\node_modules\mongodb\lib\cmap\message_stream.js:42:5)
at doWrite (_stream_writable.js:441:12)
Assuming collection name user_demo
and having 2 fields only ( _id, name
)
Create collection Schema Validator
db.createCollection("user_demo", {
validator: {
$jsonSchema: {
bsonType: "object",
title: "User Object Validation",
required: [ "_id","name"],
properties: {
_id: {
bsonType: "binData",
description: "Unique identifier,I am using it instead of objectId for portibility",
pattern: "^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$"
},
name: {
bsonType: "string",
description: "'name' must be a string and is required",
maxLength: 50,
minLength: 1
}
}
}
}
} )
Insert data in collection
a) If you already have a uuid4
db.user_demo.insertOne({_id: UUID("a5750db3-1616-45a4-bf92-6a44c3e67342"), name:"shiva"})
b) If you want random uuid4
db.user_demo.insertOne({_id: UUID(), name:"explore"})
Tested with mongo version 6.0.3
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