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.
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@@ -9,7 +9,7 @@ All sequelize errors inherit from the base JS error object.
Set is used to update values on the instance (the sequelize representation of the instance that is, remember that nothing will be persisted before you actually call `save`).
In its most basic form `set` will update a value stored in the underlying `dataValues` object. However, if a custom setter function is defined for the key, that function
will be called instead. To bypass the setter, you can pass `raw: true` in the options object.
If changed is called with a string it will return a boolean indicating whether the value of that key in `dataValues` is different from the value in `_previousDataValues`.
If changed is called without an argument, it will return an array of keys that have changed.
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Validate this instance, and if the validation passes, persist it to the database.
On success, the callback will be called with this instance. On validation error, the callback will be called with an instance of `Sequelize.ValidationError`.
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Destroy the row corresponding to this instance. Depending on your setting for paranoid, the row will either be completely deleted, or have its deletedAt timestamp set to the current time.
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@@ -319,7 +320,7 @@ Destroy the row corresponding to this instance. Depending on your setting for pa
Increment the value of one or more columns. This is done in the database, which means it does not use the values currently stored on the Instance. The increment is done using a
| fields | String | Array|Object | If a string is provided, that column is incremented by the value of `by` given in options. If an array is provided, the same is true for each column. If and object is provided, each column is incremented by the value given |
| [options] | Object | |
| [options.by=1] | Integer | The number to increment by |
Decrement the value of one or more columns. This is done in the database, which means it does not use the values currently stored on the Instance. The decrement is done using a
| fields | String | Array|Object | If a string is provided, that column is decremented by the value of `by` given in options. If an array is provided, the same is true for each column. If and object is provided, each column is decremented by the value given |
| [options] | Object | |
| [options.by=1] | Integer | The number to decrement by |
Convert the instance to a JSON representation. Proxies to calling `get` with no keys. This means get all values gotten from the DB, and apply all custom getters.
A Model represents a table in the database. Sometimes you might also see it refererred to as model, or simply as factory. This class should _not_ be instantiated directly, it is created using `sequelize.define`, and already created models can be loaded using `sequelize.import`
### Mixes:
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@@ -11,7 +11,7 @@ A Model represents a table in the database. Sometimes you might also see it refe
Find all the rows matching your query, within a specified offset / limit, and get the total number of rows matching your query. This is very usefull for paging
Insert or update a single row. An update will be executed if a row which matches the supplied values on either the primary key or a unique key is found. Note that the unique index must be defined in your sequelize model and not just in the table. Otherwise you may experience a unique constraint violation, because sequelize fails to identify the row that should be updated.
**Implementation details:**
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@@ -496,6 +496,7 @@ Insert or update a single row. An update will be executed if a row which matches
| ---- | ---- | ----------- |
| values | Object | |
| [options] | Object | |
| [options.validate=true] | Boolean | Run validations before the row is inserted |
| [options.fields=Object.keys(this.attributes)] | Array | The fields to insert / update. Defaults to all fields |
__Returns:__ Returns a boolean indicating whether the row was created or updated.
The success handler is passed an array of instances, but please notice that these may not completely represent the state of the rows in the DB. This is because MySQL
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A slightly modified version of bluebird promises. This means that, on top of the methods below, you can also call all the methods listed on the link below.
The main difference is that sequelize promises allows you to attach a listener that will be called with the generated SQL, each time a query is run.
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Instantiate sequelize with name of database, username and password
#### Example usage
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| [username=null] | String | The username which is used to authenticate against the database. |
| [password=null] | String | The password which is used to authenticate against the database. |
| [options={}] | Object | An object with options. |
| [options.dialect='mysql'] | String | The dialect you of the database you are connecting to. One of mysql, postgres, sqlite, mariadb, and mssql |
| [options.dialect='mysql'] | String | The dialect you of the database you are connecting to. One of mysql, postgres, sqlite and mariadb |
| [options.dialectModulePath=null] | String | If specified, load the dialect library from this path. For example, if you want to use pg.js instead of pg when connecting to a pg database, you should specify 'pg.js' here |
| [options.dialectOptions] | Object | An object of additional options, which are passed directly to the connection library |
| [options.storage] | String | Only used by sqlite. Defaults to ':memory:' |
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A reference to sequelize utilities. Most users will not need to use these utils directly. However, you might want to use `Sequelize.Utils._`, which is a reference to the lodash library, if you don't already have it imported in your project.
**See:**
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Exposes the validator.js object, so you can extend it with custom validation functions. The validator is exposed both on the instance, and on the constructor.
**See:**
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Define a new model, representing a table in the DB.
The table columns are define by the hash that is given as the second argument. Each attribute of the hash represents a column. A short table definition might look like this:
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Execute a query on the DB, with the posibility to bypass all the sequelize goodness.
If you do not provide other arguments than the SQL, raw will be assumed to the true, and sequelize will not try to do any formatting to the results of the query.
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| [callee] | Instance | If callee is provided, the returned data will be put into the callee |
| [options={}] | Object | Query options. |
| [options.raw] | Boolean | If true, sequelize will not try to format the results of the query, or build an instance of a model from the result |
| [options.transaction=null] | Transaction | The transaction that the query should be executed under |
| [options.transaction] | Transaction | The transaction that the query should be executed under |
| [options.type='SELECT'] | String | The type of query you are executing. The query type affects how results are formatted before they are passed back. If no type is provided sequelize will try to guess the right type based on the sql, and fall back to SELECT. The type is a string, but `Sequelize.QueryTypes` is provided is convenience shortcuts. Current options are SELECT, BULKUPDATE and BULKDELETE |
| [options.nest=false] | Boolean | If true, transforms objects with `.` separated property names into nested objects using [dottie.js](https://github.com/mickhansen/dottie.js). For example { 'user.username': 'john' } becomes { user: { username: 'john' }} |
| [replacements] | Object | Array | Either an object of named parameter replacements in the format `:param` or an array of unnamed replacements to replace `?` in your SQL. |
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Creates a object representing a database function. This can be used in search queries, both in where and order parts, and as default values in column definitions.
If you want to refer to columns in your function, you should use `sequelize.col`, so that the columns are properly interpreted as columns and not a strings.
Creates a object representing a column in the DB. This is often useful in conjunction with `sequelize.fn`, since raw string arguments to fn will be escaped.
**See:**
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Start a transaction. When using transactions, you should pass the transaction in the options argument in order for the query to happen under that transaction
```js
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@@ -889,6 +904,17 @@ sequelize.transaction(function (t) { // Note that we use a callback rather than
});
```
If you have [CLS](https://github.com/othiym23/node-continuation-local-storage) enabled, the transaction will automatically be passed to any query that runs witin the callback.
To enable CLS, add it do your project, create a namespace and set it on the sequelize constructor:
```js
varcls=require('continuation-local-storage'),
ns=cls.createNamespace('....');
varSequelize=require('sequelize');
Sequelize.cls=ns;
```
Note, that CLS is enabled for all sequelize instances, and all instances will share the same namespace
* **Note** that SQLite returns undefined for created, no matter if the row was created or updated. This is because SQLite always runs INSERT OR IGNORE + UPDATE, in a single query, so there is no way to know whether the row was inserted or not.
*
* @param {Object} values
* @param {Object} [options]
* @param {Boolean}[options.validate=true] Run validations before the row is insertedF
* @param {Array} [options.fields=Object.keys(this.attributes)] The fields to insert / update. Defaults to all fields
* @param {Object} values
* @param {Object} [options]
* @param {Boolean} [options.validate=true] Run validations before the row is inserted
* @param {Array} [options.fields=Object.keys(this.attributes)] The fields to insert / update. Defaults to all fields
*
* @alias insertOrUpdate
* @return {Promise<created>} Returns a boolean indicating whether the row was created or updated.
