Retrieving Entities

Once you have an entity and its associated database table you can start retrieving data from your database.

You can configure your query to retrieve entities using any qb method. It is highly recommended you become familiar with the qb documentation.

Active Record

You start every interaction with Quick with an instance of an entity. The easiest way to do this is using WireBox. getInstance is available in all handlers by default. WireBox can easily be injected in to any other class you need using inject="wirebox".

Quick is backed by qb, a CFML Query Builder. With this in mind, think of retrieving records for your entities like interacting with qb. For example:

var users = getInstance( "User" ).all();
for ( var user in users ) {
writeOutput( user.getUsername() );
}

In addition to using for you can utilize the each function on arrays. For example:

var users = getInstance( "User" ).all();
prc.users.each( function( user ) {
writeOutput( user.getUsername() );
});

You can add constraints to the query just the same as you would using qb directly:

var users = getInstance( "User" )
.where( "active", 1 )
.orderByDesc( "username" )
.limit( 10 )
.get();

For more information on what is possible with qb, check out the qb documentation.

Quick Service

A second way to retrieve results is to use a Quick Service. It is similar to a VirtualEntityService from cborm.

The easiest way to create a Quick Service is to inject it using the quickService: dsl:

component {
property name="userService" inject="quickService:User"
}

Any method you can call on an entity can be called on the service. A new entity will be used for all calls to a Quick Service.

var users = userService
.where( "active", 1 )
.orderByDesc( "username" )
.limit( 10 )
.get();

Aggregates

Calling qb's aggregate methods (count, max, etc.) will return the appropriate value instead of an entity or collection of entities.

existsOrFail

Name

Type

Required

Default

Description

id

any

false

An optional id to check if it exists.

errorMessage

any

false

"No [#entityName()#] found with id [#arguments.id#]"

An optional string error message or callback to produce a string error message. If a callback is used, it is passed the unloaded entity as the only argument.

Returns true if any entities exist with the configured query. If no entities exist, it throws an EntityNotFound exception.

var doesUserExist = getInstance( "User" )
.existsOrFail( rc.userID );

Retrieval Methods

all

Name

Type

Required

Default

Description

No arguments

Retrieves all the records for an entity. Calling all will ignore any non-global constraints on the query.

var users = getInstance( "User" ).all();

get

Name

Type

Required

Default

Description

No arguments

Executes the configured query, eager loads any relations, and returns the entities in a new collection.

var posts = getInstance( "Post" )
.whereNotNull( "publishedDate" )
.get();

paginate

Name

Type

Required

Default

Description

page

numeric

false

1

The page of results to return.

maxRows

numeric

false

25

The number of rows to return.

Executes the configured query, eager loads any relations, and returns the entities in the configured qb pagination struct.

var posts = getInstance( "Post" )
.whereNotNull( "publishedDate" )
.paginate( rc.page, rc.maxrows );
// default response example
{
"results": [ User#1, User#2, ... ],
"pagination": {
"totalPages": 2,
"maxRows": 25,
"offset": 0,
"page": 1,
"totalRecords": 40
}
}

first

Name

Type

Required

Default

Description

No arguments

Executes the configured query and returns the first entity found. If no entity is found, returns null.

var user = getInstance( "User" )
.where( "username", rc.username )
.first();

firstWhere

Name

Type

Required

Default

Description

column

any

true

The name of the column with which to constrain the query. A closure can be passed to begin a nested where statement.

operator

any

true

The operator to use for the constraint (i.e. "=", "<", ">=", etc.). A value can be passed as the operator and the value left null as a shortcut for equals (e.g. where( "column", 1 ) == where( "column", "=", 1 ) ).

value

any

false

The value with which to constrain the column. An expression (builder.raw()) can be passed as well.

combinator

string

false

"and"

The boolean combinator for the clause (e.g. "and" or "or"). Default: "and"

Adds a basic where clause to the query and returns the first result.

var user = getInstance( "User" )
.firstWhere( "username", rc.username );

firstOrFail

Name

Type

Required

Default

Description

errorMessage

any

false

"No [#entityName()#] found with constraints [#serializeJSON( retrieveQuery().getBindings() )#]"

An optional string error message or callback to produce a string error message. If a callback is used, it is passed the unloaded entity as the only argument.

Executes the configured query and returns the first entity found. If no entity is found, then an EntityNotFound exception is thrown with the given or default error message.

var user = getInstance( "User" )
.where( "username", rc.username )
.firstOrFail();

firstOrNew

Name

Type

Required

Default

Description

attributes

struct

false

{}

A struct of attributes to restrict the query. If no entity is found the attributes are filled on the new entity returned.

newAttributes

struct

false

{}

A struct of attributes to fill on the new entity if no entity is found. These attributes are combined with attributes.

ignoreNonExistentAttributes

boolean

false

false

If true, does not throw an exception if an attribute does not exist. Instead, it skips the non-existent attribute.

Finds the first matching record or returns an unloaded new entity.

var user = getInstance( "User" )
.firstOrNew( { "username": rc.username } );

firstOrCreate

Name

Type

Required

Default

Description

attributes

struct

false

{}

A struct of attributes to restrict the query. If no entity is found the attributes are filled on the new entity created.

newAttributes

struct

false

{}

A struct of attributes to fill on the created entity if no entity is found. These attributes are combined with attributes.

ignoreNonExistentAttributes

boolean

false

false

If true, does not throw an exception if an attribute does not exist. Instead, it skips the non-existent attribute.

Finds the first matching record or creates a new entity.

var user = getInstance( "User" )
.firstOrNew( { "username": rc.username } );

find

Name

Type

Required

Default

Description

id

any

true

The id value to find.

Returns the entity with the id value as the primary key. If no record is found, it returns null instead.

var user = getInstance( "User" )
.find( rc.userID );

findOrFail

Name

Type

Required

Default

Description

id

any

true

The id value to find.

errorMessage

any

false

"No [#entityName()#] found with id [#arguments.id#]"

An optional string error message or callback to produce a string error message. If a callback is used, it is passed the unloaded entity as the only argument.

Returns the entity with the id value as the primary key. If no record is found, it throws an EntityNotFound exception.

var user = getInstance( "User" )
.findOrFail( rc.userID );

findOrNew

Name

Type

Required

Default

Description

id

any

true

The id value to find.

attributes

struct

false

{}

A struct of attributes to fill on the new entity if no entity is found.

ignoreNonExistentAttributes

boolean

false

false

If true, does not throw an exception if an attribute does not exist. Instead, it skips the non-existent attribute.

Returns the entity with the id value as the primary key. If no record is found, it returns a new unloaded entity.

var user = getInstance( "User" ).findOrNew(
9999,
{
"firstName" : "doesnt",
"lastName" : "exist"
}
);

findOrCreate

Name

Type

Required

Default

Description

id

any

true

The id value to find.

attributes

struct

false

{}

A struct of attributes to use when creating the new entity if no entity is found.

ignoreNonExistentAttributes

boolean

false

false

If true, does not throw an exception if an attribute does not exist. Instead, it skips the non-existent attribute.

Returns the entity with the id value as the primary key. If no record is found, it returns a newly created entity.

var user = getInstance( "User" ).findOrCreate(
9999,
{
"username" : "doesntexist",
"firstName" : "doesnt",
"lastName" : "exist",
"password" : "secret"
}
);

Hydration Methods

Hydration is a term to describe filling an entity with a struct of data and then marking it as loaded, without doing any database queries. For example, this might be useful when hydrating a user from session data instead of doing a query every request.

hydrate

Name

Type

Required

Default

Description

attributes

struct

false

{}

A struct of key / value pairs to fill in to the entity.

ignoreNonExistentAttributes

boolean

false

false

If true, does not throw an exception if an attribute does not exist. Instead, it skips the non-existent attribute.

Hyrdates an entity from a struct of data. Hydrating an entity fills the entity and then marks it as loaded.

If the entity's keys are not included in the struct of data, a MissingHydrationKey is thrown.

var user = getInstance( "User" ).hydrate( {
"id": 4,
"username": "JaneDoe",
"email": "jane@example.com",
"password": "mypass1234"
} );
user.isLoaded(); // true

hydrateAll

Name

Type

Required

Default

Description

mementos

array

false

[]

An array of structs to hydrate into entities.

ignoreNonExistentAttributes

boolean

false

false

If true, does not throw an exception if an attribute does not exist. Instead, it skips the non-existent attribute.

Hydrates a new collection of entities from an array of structs.

var users = getInstance( "User" ).hydrateAll( [
{
"id": 3,
"username": "JohnDoe",
"email": "john@example.com",
"password": "mypass4321"
},
{
"id": 4,
"username": "JaneDoe",
"email": "jane@example.com",
"password": "mypass1234"
}
] );

Custom Collections

If you would like collections of entities to be returned as something besides an array, you can override the newCollection method. It receives the array of entities. You can return any custom collection you desire.

newCollection

Name

Type

Required

Default

Description

entities

array

false

[]

The array of entities returned by the query.

Returns a new collection of the given entities. It is expected to override this method in your entity if you need to specify a different collection to return. You can also call this method with no arguments to get an empty collection.

// Post.cfc
component extends="quick.models.BaseEntity" accessors="true" {
function newCollection( array entities = [] ) {
return variables._wirebox.getInstance(
name = "extras.QuickCollection",
initArguments = {
"collection" = arguments.entities
}
);
}
}