#### enableDebug() Enable internal debug option ##### Examples ```javascript enableDebug(); ``` ##### Returns - `Void` #### disableDebug() Disable internal debug option ##### Examples ```javascript disableDebug(); ``` ##### Returns - `Void` #### isConnection(connection) Check value is valid connection instance ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | connection | `object` | value to check |   | ##### Examples ```javascript isConnection('a'); // => false isConnection(null); // => false ``` ##### Returns - `boolean` whether value is connection instance #### isConnected() Check value is valid connection instance and is connected ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | connection=mongoose.connection | `object` | value to check | *Optional* | ##### Examples ```javascript isConnected('a'); // => false isConnected(null); // => false ``` ##### Returns - `boolean` whether value is connection instance and is connected #### isConnectedOrConnecting() Check value is valid connection instance and is connected or connecting ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | connection=mongoose.connection | `object` | value to check | *Optional* | ##### Examples ```javascript isConnectedOrConnecting('a'); // => false isConnectedOrConnecting(null); // => false ``` ##### Returns - `boolean` whether value is connection instance and is connected or connecting #### isSchema(schema) Check value is valid schema instance ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | schema | `object` | value to check |   | ##### Examples ```javascript isSchema('a'); // => false isSchema(schema); // => true ``` ##### Returns - `boolean` whether value is schema instance #### isModel(model) Check value is valid model ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | model | `object` | value to check |   | ##### Examples ```javascript isModel('a'); // => false isModel(model); // => true ``` ##### Returns - `boolean` whether value is model instance #### isQuery(query) Check value is valid query instance ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | query | `object` | value to check |   | ##### Examples ```javascript isQuery('a'); // => false isQuery(query); // => true ``` ##### Returns - `boolean` whether value is query instance #### isAggregate(aggregate) Check value is valid aggregate instance ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | aggregate | `object` | value to check |   | ##### Examples ```javascript isAggregate('a'); // => false isAggregate(aggregate); // => true ``` ##### Returns - `boolean` whether value is aggregate instance #### isInstance(instance) Check value is valid model instance ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | instance | `object` | value to check |   | ##### Examples ```javascript isInstance('a'); // => false isInstance(instance); // => true ``` ##### Returns - `boolean` whether value is model instance #### modelNames([connection]) Obtain registered model names ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | connection | `object` | valid connection or default | *Optional* | ##### Examples ```javascript modelNames(); //=> ['User', ... ] modelNames(connection); //=> ['User', ... ] ``` ##### Returns - `Array.<string>` set of register model names #### createSubSchema(definition[, optns]) Create sub schema with sensible defaults ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | definition | `object` | valid sub schema definition |   | | optns | `object` | valid schema options | *Optional* | ##### Examples ```javascript createSubSchema({ name: { type: String } }); // => Schema{ ... } createSubSchema({ name: { type: String } }, { timestamps: true }); // => Schema{ ... } ``` ##### Returns - `object` valid sub schema instance #### createVarySubSchema(optns, paths) Create sub schema with variable paths ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | optns | `object` | valid schema type options |   | | paths | `object` | variable paths to include on schema |   | ##### Examples ```javascript const locale = createVarySubSchema({ type: String }, 'en', 'sw'); //=> Schema { ... } const locale = createVarySubSchema( { type: String }, { name: 'en': required: true }, 'sw' ); //=> Schema { ... } ``` ##### Returns - `object` valid mongoose schema #### createSchema(definition[, optns, plugins]) Create schema with sensible default options and plugins ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | definition | `object` | valid model schema definition |   | | optns | `object` | valid schema options | *Optional* | | plugins | `Function` | valid plugins to apply | *Optional* | ##### Examples ```javascript createSchema({ name: { type: String } }); // => Schema{ ... } createSchema({ name: { type: String } }, { timestamps: false }); // => Schema{ ... } ``` ##### Returns - `object` valid schema instance #### model([modelName, schema, connection]) Obtain existing or register new model safely ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | modelName | `string` | valid model name | *Optional* | | schema | `object` | valid schema instance | *Optional* | | connection | `object` | valid database connection or default | *Optional* | ##### Examples ```javascript model('User'); // => User{ ... } model('User', schema); // => User{ ... } model(null) //=> undefined ``` ##### Returns - `object` model or undefined #### collectionNameOf([connection], modelName) Obtain collection name of provided model ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | connection | `object` | valid connection or default | *Optional* | | modelName | `string` `object` | valid model or model name |   | ##### Examples ```javascript const collectionName = collectionNameOf('User'); //=> 'users' const collectionName = collectionNameOf(User); //=> 'users' ``` ##### Returns - `string` underlying collection of the model #### deleteModels([connection, models]) Safe delete given models ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | connection | `object` | valid connection or default | *Optional* | | models | `string` | models or model names to remove | *Optional* | ##### Examples ```javascript deleteModels('User', 'Invoice'); //=> delete given models deleteModels(User, Invoice); //=> delete given models deleteModels(); //=> delete all models ``` ##### Returns - `object` model connection or default #### createModel(schema, options[, connection, plugins]) Create schema with sensible default options and plugins ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | schema | `object` | valid model schema definition |   | | options | `object` | valid model schema options |   | | options.modelName | `string` | valid model name |   | | connection | `object` | valid connection or default | *Optional* | | plugins | `Function` | list of valid plugins to apply | *Optional* | ##### Examples ```javascript createModel({ name: { type: String } }, { modelName: 'User' }); // => User{ ... } createModel({ name: { type: String } }, { modelName: 'User' }, autopopulate); // => User{ ... } ``` ##### Returns - `object` valid model instance #### connect([url, done]) Open default connection ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | url | `string` | valid connection string. If not provided it will be obtained from process.env.MONGODB_URI or package name prefixed with
current execution environment name | *Optional* | | done | `Function` | a callback to invoke on success or failure | *Optional* | ##### Examples ```javascript connect((error, connection) => { ... }); connect(url, (error, connection) => { ... }); ``` ##### Returns - `Void` #### disconnect([connection, done]) Close all connections ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | connection | `object` | valid connection or default | *Optional* | | done | `Function` | a callback to invoke on success or failure | *Optional* | ##### Examples ```javascript disconnect((error) => { ... }); ``` ##### Returns - `Void` #### create([instances]) Persist given model instances ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | instances | `object` | model instances to persist | *Optional* | ##### Examples ```javascript create(user, done); create(user, profile, done); create(user, profile, done); ``` ##### Returns - `Error` null or error #### syncIndexes([connection], done) Sync indexes in MongoDB to match, indexes defined in schemas ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | connection | `object` | valid connection or default | *Optional* | | done | `Function` | a callback to invoke on success or failure |   | ##### Examples ```javascript syncIndexes(done); syncIndexes(connection, done); ``` ##### Returns - `Error` null or error #### clear([connection, models]) Clear provided models or all if none given ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | connection | `object` | valid connection or default | *Optional* | | models | `string` | model names to remove or default to all | *Optional* | ##### Examples ```javascript clear(done); clear('User', done); clear('User', 'Profile', done); clear(connection, done); clear(connection, 'User', done); ``` ##### Returns - `Error` null or error #### drop([connection, done]) Delete the given connection database, including all collections, documents, and indexes ##### Parameters | Name | Type | Description | | | ---- | ---- | ----------- | -------- | | connection | `object` | valid connection or default | *Optional* | | done | `Function` | a callback to invoke on success or failure | *Optional* | ##### Examples ```javascript drop((error) => { ... }); ``` ##### Returns - `Error` null or error *Documentation generated with [doxdox](https://github.com/neogeek/doxdox).*