@janiscommerce/model

model

📦 Installation

npm install @janiscommerce/model

Breaking changes ⚠️

6.0.0

• When use changeKeys param and cannot get any items, it will return an empty object (before returns an empty array)

Future versions 🔜

9.0.0

• ⚠️ Deprecated: Settings with @janiscommerce/settings will no longer be supported. (Replaced with AWS Parameter Store Since 8.8.0)
• ⚠️ Deprecated: Usage of AWS Secrets Manager for credentials will no longer be supported. (Replaced with AWS Parameter Store Since 8.8.0)

🔧 Database connection settings

In order to use this package with a DB, you must to add the database connection settings, it can be set in service settings janiscommercerc.json (Core model) or in session (Client Model).

Configure database connection with databaseKey

Regardless if you use a Core or Client model you may set the databaseKey that your model will use to get the database connection settings. Default: 'default'.

class MyModel extends Model {

	get databaseKey() {
		return 'myDatabaseKey';
	}
}

👀 Either in Core or Client model the databaseKey connection settings structure is the same:

ℹ️ The type property is the only one used by this package to fetch the correct DB Driver package to use. :warning: The rest of the connection properties depends entirely by the DB Driver that you will use.

{
	myDatabaseKey: {
		write: {
			"type": "mongodb",
			"host": "http://write-host-name.org",
			// ...
		},
		read: {
			"type": "mongodb",
			"host": "http://read-host-name.org",
			// ...
		}
	}
}

ℹ️ Model types

There are two different model types:

🛠 Core: Intended for internal databases that manages common data between clients.

1️⃣ Set the databaseKey in your Model extended class

class MyModel extends Model {

	get databaseKey() {
		return 'core';
	}
}

2️⃣ Model will try to find your databaseKey in database service settings

Using Settings, with settings in file /path/to/root/.janiscommercerc.json:

{
	"database": {
		"core": {
			"write":{
				"host": "http://my-host-name.org",
				"type": "mysql",
				// ...
			}
		}
	}
}

👥 Client: Intended for only client databases that not shares data with other databases.

💉 Session injection

The session injection is useful when you have a dedicated database per client. Using the public setter session, the session will be stored in the controller instance. All the controllers and models getted using that controller will have the session injected.

1️⃣ Set the databaseKey in your Model extended class

class MyModel extends Model {

	get databaseKey() {
		return 'myDatabaseKey';
	}
}

2️⃣ Database connection configured with session injected

Your client should have the config for read (optional) and/or write (required) databases.

Example of received client:

{
	"name": "Some Client",
	"code": "some-client",

	"databases": {

		"default":{

			"write": {
				"type": "mongodb",
				"host": "http://default-host-name.org",
				// ...
			}
		},

		"myDatabaseKey": {

			"write": {
				"type": "mongodb",
				"host": "http://write-host-name.org",
				// ...
			},
			"read": {
				"type": "mongodb",
				"host": "http://read-host-name.org",
				// ...
			}
		}
	}
}

---

📤 Getters

• shouldCreateLogs (static getter). Returns if the model should log the write operations. Default: true. For more details about logging, read the logging section.

• excludeFieldsInLog (static getter). Returns the fields that will be removed from the logs as an array of strings. For example: ['password', 'super-secret']. For more details about logging, read the logging section.

• statuses (class getter). Returns an object with the default statuses (active / inactive)

• executionTime (class getter). Returns the time spent in ms on the las query.

---

📥 Setters

• useReadDB [Boolean] (class setter) Set if model should use the read DB in all read/write DB operations. Default: false.

---

⚙️ API

async getDb()

Get the configured/sessionated DBDriver instance to use methods not supported by model.

Example:

const dbDriver = await myModel.getDb();

await myModel.dbDriver.specialMethod(myModel);

async isCore()

Returns true when the model is core or false otherwise.

Since 8.8.0

Core Example:

const myCoreModel = new MyCoreModel();

const isCore = await myCoreModel.isCore(); // true expected

Non-Core Example:

const myClientModel = new MyClientModel();

const isCore = await myClientModel.isCore(); // false expected

async get(params)

Returns items from database.

Parameters

• params is an optional Object with filters, order, paginator.
• params.readonly as true if you want to use the Read Database.

Example

const items = await myModel.get({ filters: { status: 'active' } });

async getById(id, [params])

It's an alias of get(), passing and ID as filter and handling return value as an array if id is an array, or an object otherwise.

Parameters

• id is required. It can be one ID or an array of IDs
• params is an optional Object with filters, order, paginator, changeKeys.

Example

const items = await myModel.getById(123, { filters: { status: 'active' } });

async getBy(field, id, [params])

It's an alias of get(), passing and field and the values of that field as filter and handling return value as an array if value is an array, or an object otherwise.

Parameters

• field is required. A string as a field
• value is required. It can be one value or an array of values
• params is an optional Object with filters, order, paginator.

Example

const items = await myModel.getBy(orderId, 123, { filters: { status: 'active' } });

async getPaged(params, callback)

Returns items from database using pages, the default limit is 500 items per page.

Parameters

• params See get() method
• callback A function to be executed for each page. Receives three arguments: the items found, the current page and the page limit

Example

await myModel.getPaged({ filters: { status: 'active' } }, (items, page, limit) => {
	// items is an array with the result from DB
});

Default order

The default order when no order was received is field id using asc as order direction. Since 6.8.3

async getTotals(filters)

This method returns an object with data of totals. If filters is not present it will default to last get() filters. If no get() was executed before and no filters param is present, it will use no filters

Parameters

• filters is an optional. Object with filters or array of filters. Since 7.1.0

Result object structure:

• pages: The total pages for the filters applied
• page: The current page
• limit: The limit applied in get
• total: The total number of items in DB for the applied filters

Example

await myModel.get({ filters: { status: 'active' } });
const totals = await myModel.getTotals();
/**
	totals content:
	{
		pages: 3,
		page: 1,
		limit: 500,
		total: 1450
	}
*/

const totals = await myModel.getTotals( { status: 'active' } );
/**
	totals content:
	{
		pages: 3,
		page: 1,
		limit: 500,
		total: 1450
	}
*/

async mapIdBy(field, fieldValues, [params])

Search all items filtering by field and fieldValues and return an Object with key: referenceIds and values: id, only those founds.

Parameters

• field Field to filter for (String)
• fieldValues List of values to filter for (Array<strings>)
• params See get() method

Example

await myModel.mapIdBy('code', ['code-123', 'code-456'], {
	order: { code: 'desc' }
});

/**
	{
		code-456: 'the-code-456-id',
		code-123: 'the-code-123-id'
	}
*/

async mapIdByReferenceId(referencesIds, [params])

Search all References Ids and return an Object with key: referenceIds and values: id, only those founds.

Parameters

• referencesIds List of References Ids (Array<strings>)
• params See get() method

Example

await myModel.mapIdByReferenceId(['some-ref-id', 'other-ref-id', 'foo-ref-id'], {
	order: { date: 'asc' },
	filters: { foo: 'bar' }
});

/**
	{
		some-ref-id: 'some-id',
		foo-ref-id: 'foo-id'
	}
*/

async distinct(key, params)

Returns unique values of the key field from database.

Parameters

• params is an optional Object with filters.

Examples

const uniqueValues = await myModel.distinct('status');

const uniqueValues = await myModel.distinct('status', {
	filters: {
		type: 'some-type'
	}
});

async insert(item)

Inserts an item in DB. This method is only for insert, will not perform an update.

Example

await myModel.insert({ foo: 'bar' });

const items = await myModel.get({ filters: { foo: 'bar' }});

/**
	itemInserted content:
	[
		{
			foo: 'bar'
		}
		//...
	]
*/

async save(item, setOnInsert)

Inserts/updates an item in DB. This method will perfrom an upsert.

Parameters

• setOnInsert to add default values on Insert, optional

Example

await myModel.save({ foo: 'bar' }, { status: 'active' });

const items = await myModel.get({ filters: { foo: 'bar' }});

/**
	items content:
	[
		{
			foo: 'bar',
			status: 'active'
		}
		//...
	]
*/

async update(values, filter, params)

Update items that match with the filter.

Parameters

• params optional parameters to define some behavior of the query
  • skipAutomaticSetModifiedData: Boolean. When receive as true, the fields dateModified and userModified are not updated automatically.

Example

await myModel.update({ updated: 1 }, { status: 5 });
// will set updated = 1 for the items that has status = 5

async remove(item)

Remove an item from DB.

Example

await myModel.remove({ foo: 'bar' });

const items = await myModel.get({ filters: { foo: 'bar' }});

/**
	items content:
	[]
*/

async multiInsert(items)

Perform a bulk insert of items in DB. This action will insert elements, and will not update elements.

Example

await myModel.multiInsert([{ foo: 1 }, { foo: 2 }]);

const items = await myModel.get();

/**
	items content:
	[
		{ foo: 1 },
		{ foo: 2 }
	]
*/

async multiSave(items, setOnInsert)

Perform a bulk save of items in DB. This action will insert/update (upsert) elements.

Parameters

• setOnInsert to add default values on Insert, optional

Example

await myModel.multiSave([{ foo: 1 }, { foo: 2, status: 'pending' }], { status: 'active' });

const items = await myModel.get();

/**
	items content:
	[
		{ foo: 1, status: 'active' },
		{ foo: 2, status: 'pending' }
	]
*/

async multiRemove(filter)

Perform a bulk remove of items in DB.

Example

await myModel.multiRemove({ status: 2 });

const items = await myModel.get({ filters: { status: 2 }});

/**
	items content:
	[]
*/

async increment(filters, incrementData)

Increment/decrement values from an item in DB. This method will not perform an upsert.

Example

await myModel.increment({ uniqueIndex: 'bar' }, { increment: 1, decrement: -1 });

/**

before:
	items content:
	[
		{
			increment: 1,
			decrement: 2
		}
		//...
	]

after:
	items content:
	[
		{
			increment: 2,
			decrement: 1
		}
		//...
	]
*/

static changeKeys(items, newKey)

Creates an object list from the received array of items, using the specified field as keys.

Parameters

• items The items array
• newKey The common field in items that will be used as key for each item

Example

const myItems = await myModel.get();

/*
	[
		{ some: 'item', otherProp: false },
		{ some: 'otherItem', otherProp: true }
	]
*/

const myItemsByKey = MyModel.changeKeys(myItems, 'some');

/*
	{
		item: { some: 'item', otherProp: false },
		otherItem: { some: 'otherItem', otherProp: true }
	}
*/

ℹ️ In get methods such as get and getBy you can add the changeKeys param with the newKey value.

const myItems = await myModel.get({ changeKeys: 'some' });

/*
	{
		item: { some: 'item', otherProp: false },
		otherItem: { some: 'otherItem', otherProp: true }
	}
*/

ℹ️ Since 6.0.0: When no items were found it will return an empty object

const myItems = await myModel.get({ filters: { status: 'active' }, changeKeys: 'other' });

/*
	{}
*/

async dropDatabase()

Drop the Database.

Example

await myModel.dropDatabase();

async aggregate(stages)

Execute Aggregation operations to obtain computed results in Databases

⚠️ Not supported by all database connectors

Parameters

• stages An array with the aggregation stages

Example

const results = await myModel.aggregate([
	{ $match: { id: '0000000055f2255a1a8e0c54' } }, // find the document with that id
	{ $unset: 'category' }, // Removes the category field
]);

/**
	[
		{
			id: '0000000055f2255a1a8e0c54',
			name: 'Product 1',
			description: 'Product 1 description'
		}
	]
*/

async multiUpdate(operations)

Perform a bulk save of update operations in DB. This action will update elements according to received filters.

Example

await myModel.multiUpdate([
   { filter: { id: [1,2] }, data: { name: 'test 1' } },
   { filter: { otherId: 3 }, data: { name: 'test 2' } }
]);

const items = await myModel.get();

/**
	items content:
	[
		{ id: 1, name: 'test 1' },
		{ id: 4, otherId: 3, name: 'test 2' }
	]
*/

---

📑 Indexes Manipulation

⚠️ Only if DB Driver supports it

async getIndexes()

Get an array of indexes in Database table.

Example

await myModel.getIndexes();

/*
	[
		{ name: '_id_', key: { _id_: 1}, unique: true },
		{ name: 'code', key: { code: 1} }
	]
*/

async createIndex(index)

Create a single index in Database Table.

Example

await myModel.createIndex({ name: 'name', key: { name: 1}, unique: true });

async createIndexes(indexes)

Create a multiple indexes in Database Table.

Example

await myModel.createIndexes([{ name: 'name', key: { name: 1}, unique: true }, { name: 'code', key: { code: -1 }}]);

async dropIndex(name)

Drop a single in Database Table.

Example

await myModel.dropIndex('name');

async dropIndexes(names)

Drop multiple indexes in Database Table.

Example

await myModel.dropIndexes(['name', 'code']);

async getIdStruct()

Returns struct function to validate ID Type. This struct will vary depending on the implemented DB by the model

Example (for mongodb DB)

const idStruct = await myModel.getIdStruct();

/*
	struct('objectId')
*/

📋 Logging

This package automatically logs any write operation such as:

• insert()
• multiInsert()
• update()
• save()
• multiSave()
• increment()
• remove()
• multiRemove()

ℹ️ The logs will be added using the package @janiscommerce/log.

Automatic data in log

The package will add automatic fields in the log Object field.

• executionTime. Each log will have the time spent on the query. Since 6.6.0
• itemsBatch. Exclusively for methods multiInsert() and multiSave(), will be added the quantity of items inserted or updated in the same query. Since 6.6.0

😶 Disabling automatic logging

This functionality can be disabled in 2 ways

1. For all Model operation: by setting the static getter shouldCreateLogs to false.

Example

class MyModel extends Model {

	static get shouldCreateLogs() {
		return false;
	}
}

2. For the "next" operation: by using the method disableLogs(). Since 8.3.0

ℹ️ The logs are disabled only for the following operation

Example

// will not save logs
await myModel.disableLogs().insert({
	pet: 'roger',
	animal: 'dog',
	age: 8
});

// will save logs normally
await myModel.insert({
	pet: 'ringo',
	animal: 'dog',
	age: 7
});

🚫 Excluding fields from logs

You can exclude fields for logs in case you have sensitive information in your entries such as passwords, addresses, etc.

Specify the fields to exclude by setting them in the static getter excludeFieldsInLog:

class MyModel extends Model {

	static get excludeFieldsInLog() {
		return [
			'password',
			'address',
			'secret'
		]
	}
}

By setting this when you do an operation with an item like:

await myModel.insert({
	user: 'johndoe',
	password: 'some-password',
	country: 'AR',
	address: 'Fake St 123'
});

It will be logged as:

{
	id: '5ea30bcbe28c55870324d9f0',
	user: 'johndoe',
	country: 'AR'
}

📝 Set custom log data

You can add custom message or object data to log

Adding a custom message:

await myModel
  .setLogData('custom message!')
  .insert({ foo: 'bar' });

/*
	Log: {
		...logData,
		message: 'custom message!'
	}
*/

Adding a custom object data:

await myModel
  .setLogData({message:'custom message!', type:'some type'})
  .insert({ foo: 'bar' });

/*
	Log: {
		...logData,
		message: 'custom message!',
		type:'some type'
	}
*/

Adding a custom object data with log property name:

await myModel
  .setLogData({message:'custom message!', type:'some type', log: { isTest: true }})
  .insert({ foo: 'bar' });

/*
	Log: {
		...logData,
		message: 'custom message!',
		type:'some type',
		log:{
			...defaultModelLogData,
			isTest: true
		}
	}
*/

🔑 Secrets

⚠️ Deprecated: This configuration will no longer be supported starting from version 9.0.0. ⚠️

The package will get the secret using the JANIS_SERVICE_NAME environment variable. If the secret is found, the result will be merged with the settings found in the janiscommercerc.json file or in the Client databases configuration. See Database connection settings.

The Secrets are stored in AWS Secrets Manager and obtained with the package @janiscommerce/aws-secrets-manager

Complete example in which the settings are obtained for settings file or Client and merged with the fetched credentials in AWS Secrets Manager.

1. Settings in file or Client.

{
	"core": {
		"write": {
			"type": "mongodb",
			"database": "core",
			"otherDBDriverConfig": 100
		}
	}
}

2. Secret fetched.

{
	"databases": {
		"core": {
			"write": {
				"host": "mongodb+srv://some-host.mongodb.net",
				"user": "secure-user",
				"password": "secure-password",
			}
		}
	}
}

3. Config passed to the Database Driver.

{
	"core": {
		"write": {
			"type": "mongodb",
			"database": "core",
			"otherDBDriverConfig": 100,
			"host": "mongodb+srv://some-host.mongodb.net",
			"user": "secure-user",
			"password": "secure-password",
		}
	}
}

Skip Credential Fetching

To skip the fetch of the credentials, it can be used the setting skipFetchCredentials set as true.

{
	"core": {
		"write": {
			"skipFetchCredentials": true,
			"type": "mongodb",
			"protocol": "mongodb+srv://",
			"host": "mongodb+srv://some-host.mongodb.net",
			"user": "some-user",
			"password": "insecure-password"
		}
	}
}