Class: ReadOnlyChildModel

ReadOnlyChildModel

Represents the definition of an asynchronous read-only child model.

new ReadOnlyChildModel(parent, eventHandlers)

Creates a new asynchronous read-only child model instance.

The name of the model type available as: <instance>.constructor.modelType, returns 'ReadOnlyChildModel'.

Valid parent model types are:

 * ReadOnlyRootCollection
 * ReadOnlyChildCollection
 * ReadOnlyRootModel
 * ReadOnlyChildModel
 * CommandObject
Parameters:
Name Type Argument Description
parent object

The parent business object.

eventHandlers bo.shared.EventHandlerList <optional>

The event handlers of the instance.

Fires:
Throws:
  • Argument error: The parent object must be a ReadOnlyRootCollection, ReadOnlyChildCollection, ReadOnlyRootModel, ReadOnlyChildModel or CommandObject instance.
  • Argument error: The event handlers must be an EventHandlerList object or null.

Extends

Members

<readonly> $modelName :string

The name of the model. However, it can be hidden by a model property with the same name.

Type:
  • string

Methods

<protected, static> create(parent, eventHandlers, callback)

Creates a new read-only business object instance.
This method is called by the parent object.

Parameters:
Name Type Argument Description
parent object

The parent business object.

eventHandlers bo.shared.EventHandlerList <optional>

The event handlers of the instance.

callback external.cbDataPortal

Returns a new read-only business object.

<protected, static> load(parent, data, eventHandlers, callback)

Initializes a read-only business object width data retrieved from the repository.
This method is called by the parent object.

Parameters:
Name Type Argument Description
parent object

The parent business object.

data object

The data to load into the business object.

eventHandlers bo.shared.EventHandlerList <optional>

The event handlers of the instance.

callback external.cbDataPortal

Returns the required read-only business object.

Throws:
Authorization error: The user has no permission to execute the action.

<protected> checkRules()

Executes all the validation rules of the business object, including the ones of its child objects.

This method is called by the parent object.

By default read-only business objects are supposed to be valid.

<protected> fetch(data, method, callback)

Initializes a business object with data retrieved from the repository.
This method is called by the parent object.

Parameters:
Name Type Argument Description
data object <optional>

The data to load into the business object.

method string <optional>

An alternative fetch method to check for permission.

callback external.cbDataPortal

Returns the required read-only business object.

<protected> getBrokenRules(namespace) → {bo.rules.BrokenRulesOutput}

Gets the broken rules of the business object.

This method is called by the parent object.

By default read-only business objects are supposed to be valid.

Parameters:
Name Type Argument Description
namespace string <optional>

The namespace of the message keys when messages are localizable.

Returns:

The broken rules of the business object.

Type
bo.rules.BrokenRulesOutput

<protected> isValid() → {boolean}

Indicates whether all the validation rules of the business object, including the ones of its child objects, succeeds. A valid business object may have broken rules with severity of success, information and warning.

This method is called by the parent object.

By default read-only business objects are supposed to be valid.

Returns:

True when the business object is valid, otherwise false.

Type
boolean

toCto() → {object}

Transforms the business object to a plain object to send to the client.
This method is usually called by the parent object.

Returns:

The client transfer object.

Type
object

Events

postFetch

The event arises after the business object instance has been retrieved from the repository.

Parameters:
Name Type Description
eventArgs bo.shared.DataPortalEventArgs

Data portal event arguments.

newObject ReadOnlyChildModel

The instance of the model after the data portal action.

preFetch

The event arises before the business object instance will be retrieved from the repository.

Parameters:
Name Type Description
eventArgs bo.shared.DataPortalEventArgs

Data portal event arguments.

oldObject ReadOnlyChildModel

The instance of the model before the data portal action.

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