Class Errors

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Sequelize provides a host of custom error classes, to allow you to do easier debugging. All of these errors are exposed on the sequelize object and the sequelize constructor. All sequelize errors inherit from the base JS error object.

`new BaseError()`

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The Base Error all Sequelize Errors inherit from. Aliases: Error

`new ValidationError(message, [errors])`

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Validation Error. Thrown when the sequelize validation has failed. The error contains an errors property, which is an array with 1 or more ValidationErrorItems, one for each validation that failed.

Params:

Name	Type	Description
message	string	Error message
[errors]	Array	Array of ValidationErrorItem objects describing the validation errors

Extends: BaseError

`errors`

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An array of ValidationErrorItems

`get(path)`

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Gets all validation error items for the path / field specified.

Params:

Name	Type	Description
path	string	The path to be checked for error items

`new DatabaseError()`

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A base class for all database related errors.

Extends: BaseError

`parent`

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The database specific error which triggered this one

`sql`

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The SQL that triggered the error

`message()`

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The message from the DB.

`fields()`

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The fields of the unique constraint

`value()`

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The value(s) which triggered the error

`index()`

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The name of the index that triggered the error

`new TimeoutError()`

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Thrown when a database query times out because of a deadlock

Extends: DatabaseError

`new UniqueConstraintError()`

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Thrown when a unique constraint is violated in the database

Extends: DatabaseError

`new ForeignKeyConstraintError()`

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Thrown when a foreign key constraint is violated in the database

Extends: DatabaseError

`new ExclusionConstraintError()`

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Thrown when an exclusion constraint is violated in the database

Extends: DatabaseError

`new ValidationErrorItem(message, type, path, value)`

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Validation Error Item Instances of this class are included in the ValidationError.errors property.

Params:

Name	Type	Description
message	string	An error message
type	string	The type of the validation error
path	string	The field that triggered the validation error
value	string	The value that generated the error

`new ConnectionError()`

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A base class for all connection related errors.

Extends: BaseError

`parent`

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The connection specific error which triggered this one

`new ConnectionRefusedError()`

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Thrown when a connection to a database is refused

Extends: ConnectionError

`new AccessDeniedError()`

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Thrown when a connection to a database is refused due to insufficient privileges

Extends: ConnectionError

`new HostNotFoundError()`

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Thrown when a connection to a database has a hostname that was not found

Extends: ConnectionError

`new HostNotReachableError()`

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Thrown when a connection to a database has a hostname that was not reachable

Extends: ConnectionError

`new InvalidConnectionError()`

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Thrown when a connection to a database has invalid values for any of the connection parameters

Extends: ConnectionError

`new ConnectionTimedOutError()`

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Thrown when a connection to a database times out

Extends: ConnectionError

`new InstanceError()`

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Thrown when a some problem occurred with Instance methods (see message for details)

Extends: BaseError

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