Represents an 1 - N relationship where the source side of the relation is related to only one record in the target table.
An example of a BelongsTo association would be Article belongs to Author.
MANY_TO_MANY
, MANY_TO_ONE
, ONE_TO_MANY
, ONE_TO_ONE
, STRATEGY_JOIN
, STRATEGY_SELECT
, STRATEGY_SUBQUERY
$_validStrategies
protected array
_bindingKey
, _cascadeCallbacks
, _className
, _conditions
, _dependent
, _finder
, _foreignKey
, _joinType
, _name
, _propertyName
, _sourceTable
, _strategy
, _targetTable
_tableLocator
Returns a single or multiple conditions to be appended to the generated join clause for getting the results on the target table.
Eager loads a list of records in the target table that are related to another set of records in the source table. Source records can specified in two ways: first one is by passing a Query object setup to find on the source table and the other way is by explicitly passing an array of primary key values from the source table.
Returns whether or not the passed table is the owning side for this association. This means that rows in the 'target' table would miss important or required information if the row in 'source' did not exist.
Takes an entity from the source table and looks if there is a field matching the property name for this association. The found entity will be saved on the target table for this association by passing supplied $options
_joinCondition( array $options )
Returns a single or multiple conditions to be appended to the generated join clause for getting the results on the target table.
$options
if the number of columns in the foreignKey do not match the number of columns in the target table primaryKey
Cake\ORM\Association::_joinCondition()
_propertyName( )
Returns default property name based on association name.
Cake\ORM\Association::_propertyName()
cascadeDelete( Cake\Datasource\EntityInterface $entity , array $options [] )
Handle cascading deletes.
BelongsTo associations are never cleared in a cascading delete scenario.
Cake\Datasource\EntityInterface
$entity
$options
optional [] eagerLoader( array $options )
Eager loads a list of records in the target table that are related to another set of records in the source table. Source records can specified in two ways: first one is by passing a Query object setup to find on the source table and the other way is by explicitly passing an array of primary key values from the source table.
$options
getForeignKey( )
Gets the name of the field representing the foreign key to the target table.
Cake\ORM\Association::getForeignKey()
isOwningSide( Cake\ORM\Table $side )
Returns whether or not the passed table is the owning side for this association. This means that rows in the 'target' table would miss important or required information if the row in 'source' did not exist.
Cake\ORM\Table
$side
saveAssociated( Cake\Datasource\EntityInterface $entity , array $options [] )
Takes an entity from the source table and looks if there is a field matching the property name for this association. The found entity will be saved on the target table for this association by passing supplied $options
Cake\Datasource\EntityInterface
$entity
$options
optional [] options to be passed to the save method in the target table
Cake\Datasource\EntityInterface
false if $entity could not be saved, otherwise it returns the saved entity
__call( string $method , array $argument )
Proxies method calls to the target table.
$method
$argument
__construct( string $alias , array $options [] )
Constructor. Subclasses can override _options function to get the original list of passed options if expecting any other special key
$alias
$options
optional [] __get( string $property )
Proxies property retrieval to the target table. This is handy for getting this association's associations
$property
Cake\ORM\Association
__isset( string $property )
Proxies the isset call to the target table. This is handy to check if the target table has another association with the passed name
$property
_appendFields( Cake\ORM\Query $query , Cake\ORM\Query $surrogate , array $options )
Helper function used to conditionally append fields to the select clause of a query from the fields found in another query object.
Cake\ORM\Query
$query
Cake\ORM\Query
$surrogate
$options
attachTo
_appendNotMatching( Cake\Datasource\QueryInterface $query , array $options )
Conditionally adds a condition to the passed Query that will make it find records where there is no match with this association.
Cake\Datasource\QueryInterface
$query
$options
negateMatch
key._bindNewAssociations( Cake\ORM\Query $query , Cake\ORM\Query $surrogate , array $options )
Applies all attachable associations to $query
out of the containments found in the $surrogate
query.
Copies all contained associations from the $surrogate
query into the passed $query
. Containments are altered so that they respect the associations chain from which they originated.
Cake\ORM\Query
$query
Cake\ORM\Query
$surrogate
$options
attachTo
_dispatchBeforeFind( Cake\ORM\Query $query )
Triggers beforeFind on the target table for the query this association is attaching to
Cake\ORM\Query
$query
_extractFinder( string|array $finderData )
Helper method to infer the requested finder and its options.
Returns the inferred options from the finder $type.
The following will call the finder 'translations' with the value of the finder as its options: $query->contain(['Comments' => ['finder' => ['translations']]]); $query->contain(['Comments' => ['finder' => ['translations' => []]]]); $query->contain(['Comments' => ['finder' => ['translations' => ['locales' => ['en_US']]]]]);
$finderData
The finder name or an array having the name as key and options as value.
_formatAssociationResults( Cake\ORM\Query $query , Cake\ORM\Query $surrogate , array $options )
Adds a formatter function to the passed $query
if the $surrogate
query declares any other formatter. Since the $surrogate
query correspond to the associated target table, the resulting formatter will be the result of applying the surrogate formatters to only the property corresponding to such table.
Cake\ORM\Query
$query
Cake\ORM\Query
$surrogate
the query having formatters for the associated target table.
$options
attachTo
_getClassName( string $alias , array $options [] )
Gets the table class name.
$alias
$options
optional [] _options( array $options )
Override this function to initialize any concrete association class, it will get passed the original list of options used in the constructor
$options
attachTo( Cake\ORM\Query $query , array $options [] )
Alters a Query object to include the associated target table data in the final result
The options array accept the following keys:
Cake\ORM\Query
$query
$options
optional [] if the query builder passed does not return a query object
bindingKey( string|null $key null )
Sets the name of the field representing the binding field with the target table. When not manually specified the primary key of the owning side table is used.
If no parameters are passed the current field is returned
$key
optional null canBeJoined( array $options [] )
Whether this association can be expressed directly in a query join
$options
optional [] cascadeCallbacks( boolean|null $cascadeCallbacks null )
Sets whether or not cascaded deletes should also fire callbacks. If no arguments are passed, the current configured value is returned
$cascadeCallbacks
optional null conditions( array|null $conditions null )
Sets a list of conditions to be always included when fetching records from the target association. If no parameters are passed the current list is returned
$conditions
optional null defaultRowValue( array $row , boolean $joined )
Returns a modified row after appending a property for this association with the default empty value according to whether the association was joined or fetched externally.
$row
$joined
Whether or not the row is a result of a direct join with this association
deleteAll( mixed $conditions )
Proxies the delete operation to the target table's deleteAll method
$conditions
Conditions to be used, accepts anything Query::where() can take.
dependent( boolean|null $dependent null )
Sets whether the records on the target table are dependent on the source table.
This is primarily used to indicate that records should be removed if the owning record in the source table is deleted.
If no parameters are passed the current setting is returned.
$dependent
optional null exists( array|callable|Cake\Database\ExpressionInterface $conditions )
Proxies the operation to the target table's exists method after appending the default conditions for this association
Cake\Database\ExpressionInterface
$conditions
The conditions to use for checking if any record matches.
find( string|array|null $type null , array $options [] )
Proxies the finding operation to the target table's find method and modifies the query accordingly based of this association configuration
$type
optional null the type of query to perform, if an array is passed, it will be interpreted as the $options
parameter
$options
optional [] Cake\ORM\Query
finder( string|null $finder null )
Sets the default finder to use for fetching rows from the target table. If no parameters are passed, it will return the currently configured finder name.
$finder
optional null foreignKey( string|null $key null )
Sets the name of the field representing the foreign key to the target table. If no parameters are passed the current field is returned
$key
optional null getBindingKey( )
Gets the name of the field representing the binding field with the target table. When not manually specified the primary key of the owning side table is used.
getCascadeCallbacks( )
Gets whether or not cascaded deletes should also fire callbacks.
getConditions( )
Gets a list of conditions to be always included when fetching records from the target association.
getDependent( )
Sets whether the records on the target table are dependent on the source table.
This is primarily used to indicate that records should be removed if the owning record in the source table is deleted.
getFinder( )
Gets the default finder to use for fetching rows from the target table.
getJoinType( )
Gets the type of join to be used when adding the association to a query.
getProperty( )
Gets the property name that should be filled with data from the target table in the source table record.
getSource( )
Gets the table instance for the source side of the association.
Cake\ORM\Table
getStrategy( )
Gets the strategy name to be used to fetch associated records. Keep in mind that some association types might not implement but a default strategy, rendering any changes to this setting void.
getTarget( )
Gets the table instance for the target side of the association.
Cake\ORM\Table
joinType( string|null $type null )
Sets the type of join to be used when adding the association to a query. If no arguments are passed, the currently configured type is returned.
$type
optional null name( string|null $name null )
Sets the name for this association.
$name
optional null property( string|null $name null )
Sets the property name that should be filled with data from the target table in the source table record. If no arguments are passed, the currently configured type is returned.
$name
optional null requiresKeys( array $options [] )
Returns true if the eager loading process will require a set of the owning table's binding keys in order to use them as a filter in the finder query.
$options
optional [] setBindingKey( string $key )
Sets the name of the field representing the binding field with the target table. When not manually specified the primary key of the owning side table is used.
$key
setCascadeCallbacks( boolean $cascadeCallbacks )
Sets whether or not cascaded deletes should also fire callbacks.
$cascadeCallbacks
setConditions( array $conditions )
Sets a list of conditions to be always included when fetching records from the target association.
$conditions
setDependent( boolean $dependent )
Sets whether the records on the target table are dependent on the source table.
This is primarily used to indicate that records should be removed if the owning record in the source table is deleted.
If no parameters are passed the current setting is returned.
$dependent
setFinder( string $finder )
Sets the default finder to use for fetching rows from the target table.
$finder
setForeignKey( string $key )
Sets the name of the field representing the foreign key to the target table.
$key
setJoinType( string $type )
Sets the type of join to be used when adding the association to a query.
$type
setName( string $name )
Sets the name for this association.
$name
setProperty( string $name )
Sets the property name that should be filled with data from the target table in the source table record.
$name
setSource( Cake\ORM\Table $table )
Sets the table instance for the source side of the association.
Cake\ORM\Table
$table
setStrategy( string $name )
Sets the strategy name to be used to fetch associated records. Keep in mind that some association types might not implement but a default strategy, rendering any changes to this setting void.
$name
setTarget( Cake\ORM\Table $table )
Sets the table instance for the target side of the association.
Cake\ORM\Table
$table
source( Cake\ORM\Table $table null )
Sets the table instance for the source side of the association. If no arguments are passed, the current configured table instance is returned
Cake\ORM\Table
$table
optional null Cake\ORM\Table
strategy( string|null $name null )
Sets the strategy name to be used to fetch associated records. Keep in mind that some association types might not implement but a default strategy, rendering any changes to this setting void. If no arguments are passed, the currently configured strategy is returned.
$name
optional null target( Cake\ORM\Table $table null )
Sets the table instance for the target side of the association. If no arguments are passed, the current configured table instance is returned
Cake\ORM\Table
$table
optional null Cake\ORM\Table
transformRow( array $row , string $nestKey , boolean $joined , string|null $targetProperty null )
Correctly nests a result row associated values into the correct array keys inside the source results.
$row
$nestKey
The array key under which the results for this association should be found
$joined
Whether or not the row is a result of a direct join with this association
$targetProperty
optional null The property name in the source results where the association data shuld be nested in. Will use the default one if not provided.
updateAll( array $fields , mixed $conditions )
Proxies the update operation to the target table's updateAll method
$fields
$conditions
Conditions to be used, accepts anything Query::where() can take.
_camelize( string $name )
Creates a camelized version of $name
$name
_entityName( string $name )
Creates the proper entity name (singular) for the specified name
$name
_fixtureName( string $name )
Creates a fixture name
$name
_modelKey( string $name )
Creates the proper underscored model key for associations
If the input contains a dot, assume that the right side is the real table name.
$name
_modelNameFromKey( string $key )
Creates the proper model name from a foreign key
$key
_pluginNamespace( string $pluginName )
Return plugin's namespace
$pluginName
_pluginPath( string $pluginName )
Find the correct path for a plugin. Scans $pluginPaths for the plugin you want.
$pluginName
_pluralHumanName( string $name )
Creates the plural human name used in views
$name
_singularHumanName( string $name )
Creates the singular human name used in views
$name
_singularName( string $name )
Creates the singular name for use in views.
$name
_variableName( string $name )
Creates the plural variable name for views
$name
tableLocator( Cake\ORM\Locator\LocatorInterface $tableLocator null )
Sets the table locator. If no parameters are passed, it will return the currently used locator.
Cake\ORM\Locator\LocatorInterface
$tableLocator
optional null Cake\ORM\Locator\LocatorInterface
protected array
Valid strategies for this type of association
[ self::STRATEGY_JOIN, self::STRATEGY_SELECT ]
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https://api.cakephp.org/3.4/class-Cake.ORM.Association.BelongsTo.html