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mirror of https://github.com/namibia/awesome-cheatsheets.git synced 2024-11-17 10:35:16 +00:00

Sails - Waterline ORM

This commit is contained in:
Julien LE COUPANEC 2018-06-29 21:38:40 +01:00
parent 4aad09caaa
commit 559363f740

View File

@ -455,6 +455,152 @@ res.view()
* https://sailsjs.com/documentation/reference/waterline-orm
********************************************************************************************/
// --> DATASTORE <--
// Return the default datastore
var datastore = sails.getDatastore()
// The generic, stateless, low-level driver for this datastore (if the adapter supports it).
datastore.driver
// The live connection manager for this datastore.
datastore.manager
// Lease a new connection from the datastore for use in running multiple queries
// on the same connection (i.e. so that the logic provided in during can reuse the db connection).
await datastore.leaseConnection(during)
// Execute a raw SQL query using this datastore.
await datastore.sendNativeQuery(sql, valuesToEscape)
// Fetch a preconfigured deferred object hooked up to the sails-mysql or sails-postgresql adapter
// (and consequently the appropriate driver)
await datastore.transaction(during)
// --> MODELS <--
// Add one or more existing child records to the specified collection.
MyModel.addToCollection(parentId, association).members(childIds)
// Remove one or more members from the specified collection
MyModel.removeFromCollection()
// Replace all members of the specified collection
MyModel.replaceCollection()
// Archive ("soft-delete") records that match the specified criteria,
// saving them as new records in the built-in Archive model, then destroying the originals.
MyModel.archive(criteria)
// Get the total number of records matching the specified criteria.
MyModel.count(criteria)
// Get the aggregate mean of the specified attribute across all matching records.
MyModel.avg(numericAttrName, criteria)
// Get the aggregate sum of the specified attribute across all matching records.
MyModel.sum(numericAttrName, criteria)
// Find records in your database that match the given criteria.
MyModel.find(criteria)
// Attempt to find a particular record in your database that matches the given criteria.
MyModel.findOne(criteria)
// Find the record matching the specified criteria.
// If no such record exists, create one using the provided initial values.
MyModel.findOrCreate(criteria, initialValues)
// Create a record in the database.
MyModel.create(initialValues)
MyModel.create(initialValues).fetch() // Created record will be returned
// Create a set of records in the database.
MyModel.createEach(initialValues)
MyModel.createEach(initialValues).fetch() // Created records will be returned
// Update all records matching criteria.
MyModel.update(criteria, valuesToSet)
MyModel.update(criteria, valuesToSet).fetch() // Updated records will be returned
// Destroy records in your database that match the given criteria.
MyModel.destroy(criteria)
MyModel.destroy(criteria).fetch() // Destroyed record will be returned
// Access the datastore for a particular model.
MyModel.getDatastore()
// Stream records from your database one at a time or in batches,
// without first having to buffer the entire result set in memory.
MyModel.stream(criteria)
// Verify that a value would be valid for a given attribute, then return it, loosely coerced.
MyModel.validate(attrName, value)
// --> QUERIES <--
// Set the maximum number of records to retrieve when executing a query instance.
query.limit(maximum)
// Indicate a number of records to skip before returning the results from executing a query instance.
query.skip(numRecordsToSkip)
// Set the order in which retrieved records should be returned when executing a query instance.
query.sort(sortClause)
// Specify a where clause for filtering a query.
query.where(whereClause)
// Tell Waterline (and the underlying database adapter) to send back records that were
// updated/destroyed/created when performing an .update(), .create(), .createEach() or .destroy()
// query. Otherwise, no data will be returned (or if you are using callbacks, the second argument
// to the .exec() callback will be undefined.)
// This is just a shortcut for .meta({fetch: true})
// Warning: This is not recommended for update/destroy queries that affect large numbers of records.
query.fetch()
// Modify a query instance so that, when executed, it will populate child records for the
// specified collection, optionally filtering by subcriteria. Populate may be called more than
// once on the same query, as long as each call is for a different association.
query.populate()
// Decrypt any auto-encrypted attributes in the records returned for this particular query.
// This is just a shortcut for .meta({decrypt: true})
query.decrypt()
// Execute a Waterline query instance.
query.exec(function (err, result) {})
// Begin executing a Waterline query instance and return a promise.
// This is an alternative to .exec().
query.toPromise()
// Capture and intercept the specified error, automatically modifying and re-throwing it,
// or specifying a new Error to be thrown instead. (Still throws.)
query.intercept(filter, handler)
query.intercept(handler)
// Provide additional options to Waterline when executing a query instance.
query.meta(options)
// Execute a Waterline query instance using promises.
// Whenever possible, it is recommended that you use await instead of calling this method.
// This is an alternative to .exec(). When combined with .catch(), it provides the same functionality.
query.then(callback)
// Execute a Waterline query instance using promises.
// Whenever possible, it is recommended that you use await instead of calling this method.
// This is an alternative to .exec(). When combined with .then(), it provides the same functionality.
query.catch(callback)
// Tolerate (swallow) the specified error, and return a new result value (or undefined) instead. (Don't throw.)
query.tolerate(filter, handler)
query.tolerate(filter)
query.tolerate(handler)
// Specify an existing database connection to use for this query.
query.usingConnection(connection)
/********************************************************************************************
* 8. WEB SOCKETS
* https://sailsjs.com/documentation/reference/web-sockets