Class RulesChecker

Contains logic for storing and checking rules on entities

RulesCheckers are used by Table classes to ensure that the current entity state satisfies the application logic and business rules.

RulesCheckers afford different rules to be applied in the create and update scenario.

Adding rules

Rules must be callable objects that return true/false depending on whether or not the rule has been satisfied. You can use RulesChecker::add(), RulesChecker::addCreate(), RulesChecker::addUpdate() and RulesChecker::addDelete to add rules to a checker.

Running checks

Generally a Table object will invoke the rules objects, but you can manually invoke the checks by calling RulesChecker::checkCreate(), RulesChecker::checkUpdate() or RulesChecker::checkDelete().

Namespace: Cake\Datasource

Constants summary

  • string
    CREATE
    'create'
  • string
    DELETE
    'delete'
  • string
    UPDATE
    'update'

Properties summary

  • $_createRules protected
    \Cake\Datasource\RuleInvoker[]

    The list of rules to check during create operations

  • $_deleteRules protected
    \Cake\Datasource\RuleInvoker[]

    The list of rules to check during delete operations

  • $_options protected
    array

    List of options to pass to every callable rule

  • $_rules protected
    \Cake\Datasource\RuleInvoker[]

    The list of rules to be checked on both create and update operations

  • $_updateRules protected
    \Cake\Datasource\RuleInvoker[]

    The list of rules to check during update operations

  • $_useI18n protected
    bool

    Whether or not to use I18n functions for translating default error messages

Method Summary

  • __construct() public

    Constructor. Takes the options to be passed to all rules.

  • _addError() protected

    Utility method for decorating any callable so that if it returns false, the correct property in the entity is marked as invalid.

  • _checkRules() protected

    Used by top level functions checkDelete, checkCreate and checkUpdate, this function iterates an array containing the rules to be checked and checks them all.

  • add() public

    Adds a rule that will be applied to the entity both on create and update operations.

  • addCreate() public

    Adds a rule that will be applied to the entity on create operations.

  • addDelete() public

    Adds a rule that will be applied to the entity on delete operations.

  • addUpdate() public

    Adds a rule that will be applied to the entity on update operations.

  • check() public

    Runs each of the rules by passing the provided entity and returns true if all of them pass. The rules to be applied are depended on the $mode parameter which can only be RulesChecker::CREATE, RulesChecker::UPDATE or RulesChecker::DELETE

  • checkCreate() public

    Runs each of the rules by passing the provided entity and returns true if all of them pass. The rules selected will be only those specified to be run on 'create'

  • checkDelete() public

    Runs each of the rules by passing the provided entity and returns true if all of them pass. The rules selected will be only those specified to be run on 'delete'

  • checkUpdate() public

    Runs each of the rules by passing the provided entity and returns true if all of them pass. The rules selected will be only those specified to be run on 'update'

Method Detail

__construct() public 

__construct(array $options)

Constructor. Takes the options to be passed to all rules.

Parameters

array $options optional

The options to pass to every rule

_addError() protected 

_addError(callable $rule, mixed $name, array $options)

Utility method for decorating any callable so that if it returns false, the correct property in the entity is marked as invalid.

Parameters

callable $rule

The rule to decorate

string|array|null $name optional

The alias for a rule or an array of options

array $options optional

The options containing the error message and field.

Returns

\Cake\Datasource\RuleInvoker

_checkRules() protected 

_checkRules(\Cake\Datasource\EntityInterface $entity, array $options, array $rules)

Used by top level functions checkDelete, checkCreate and checkUpdate, this function iterates an array containing the rules to be checked and checks them all.

Parameters

\Cake\Datasource\EntityInterface $entity

The entity to check for validity.

array $options optional

Extra options to pass to checker functions.

\Cake\Datasource\RuleInvoker[] $rules optional

The list of rules that must be checked.

Returns

bool

add() public 

add(callable $rule, mixed $name, array $options)

Adds a rule that will be applied to the entity both on create and update operations.

Options

The options array accept the following special keys:

  • errorField: The name of the entity field that will be marked as invalid if the rule does not pass.
  • message: The error message to set to errorField if the rule does not pass.

Parameters

callable $rule

A callable function or object that will return whether the entity is valid or not.

string|array|null $name optional

The alias for a rule, or an array of options.

array $options optional

List of extra options to pass to the rule callable as second argument.

Returns

$this

addCreate() public 

addCreate(callable $rule, mixed $name, array $options)

Adds a rule that will be applied to the entity on create operations.

Options

The options array accept the following special keys:

  • errorField: The name of the entity field that will be marked as invalid if the rule does not pass.
  • message: The error message to set to errorField if the rule does not pass.

Parameters

callable $rule

A callable function or object that will return whether the entity is valid or not.

string|array|null $name optional

The alias for a rule or an array of options.

array $options optional

List of extra options to pass to the rule callable as second argument.

Returns

$this

addDelete() public 

addDelete(callable $rule, mixed $name, array $options)

Adds a rule that will be applied to the entity on delete operations.

Options

The options array accept the following special keys:

  • errorField: The name of the entity field that will be marked as invalid if the rule does not pass.
  • message: The error message to set to errorField if the rule does not pass.

Parameters

callable $rule

A callable function or object that will return whether the entity is valid or not.

string|array|null $name optional

The alias for a rule, or an array of options.

array $options optional

List of extra options to pass to the rule callable as second argument.

Returns

$this

addUpdate() public 

addUpdate(callable $rule, mixed $name, array $options)

Adds a rule that will be applied to the entity on update operations.

Options

The options array accept the following special keys:

  • errorField: The name of the entity field that will be marked as invalid if the rule does not pass.
  • message: The error message to set to errorField if the rule does not pass.

Parameters

callable $rule

A callable function or object that will return whether the entity is valid or not.

string|array|null $name optional

The alias for a rule, or an array of options.

array $options optional

List of extra options to pass to the rule callable as second argument.

Returns

$this

check() public 

check(\Cake\Datasource\EntityInterface $entity, string $mode, array $options)

Runs each of the rules by passing the provided entity and returns true if all of them pass. The rules to be applied are depended on the $mode parameter which can only be RulesChecker::CREATE, RulesChecker::UPDATE or RulesChecker::DELETE

Parameters

\Cake\Datasource\EntityInterface $entity

The entity to check for validity.

string $mode

Either 'create, 'update' or 'delete'.

array $options optional

Extra options to pass to checker functions.

Returns

bool

Throws

InvalidArgumentException
if an invalid mode is passed.

checkCreate() public 

checkCreate(\Cake\Datasource\EntityInterface $entity, array $options)

Runs each of the rules by passing the provided entity and returns true if all of them pass. The rules selected will be only those specified to be run on 'create'

Parameters

\Cake\Datasource\EntityInterface $entity

The entity to check for validity.

array $options optional

Extra options to pass to checker functions.

Returns

bool

checkDelete() public 

checkDelete(\Cake\Datasource\EntityInterface $entity, array $options)

Runs each of the rules by passing the provided entity and returns true if all of them pass. The rules selected will be only those specified to be run on 'delete'

Parameters

\Cake\Datasource\EntityInterface $entity

The entity to check for validity.

array $options optional

Extra options to pass to checker functions.

Returns

bool

checkUpdate() public 

checkUpdate(\Cake\Datasource\EntityInterface $entity, array $options)

Runs each of the rules by passing the provided entity and returns true if all of them pass. The rules selected will be only those specified to be run on 'update'

Parameters

\Cake\Datasource\EntityInterface $entity

The entity to check for validity.

array $options optional

Extra options to pass to checker functions.

Returns

bool

Property Detail

$_createRules protected

The list of rules to check during create operations

Type

\Cake\Datasource\RuleInvoker[]

$_deleteRules protected

The list of rules to check during delete operations

Type

\Cake\Datasource\RuleInvoker[]

$_options protected

List of options to pass to every callable rule

Type

array

$_rules protected

The list of rules to be checked on both create and update operations

Type

\Cake\Datasource\RuleInvoker[]

$_updateRules protected

The list of rules to check during update operations

Type

\Cake\Datasource\RuleInvoker[]

$_useI18n protected

Whether or not to use I18n functions for translating default error messages

Type

bool

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https://api.cakephp.org/4.0/class-Cake.Datasource.RulesChecker.html