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/lib/classes/external/ -> exporter.php (source)
Differences Between: [Versions 310 and 402] [Versions 311 and 402] [Versions 39 and 402] [Versions 400 and 402] [Versions 401 and 402]
Generic exporter to take a stdClass and prepare it for return by webservice.
| Copyright: | 2015 Damyon Wiese |
| License: | http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later |
| File Size: | 607 lines (26 kb) |
| Included or required: | 0 times |
| Referenced: | 0 times |
| Includes or requires: | 0 files |
Defines 2 classes
exporter:: (1 method):
__construct()
is:: (16 methods):
export()
get_format_parameters()
get_other_values()
read_properties_definition()
format_properties()
properties_definition()
define_other_properties()
define_properties()
define_related()
get_context_structure()
get_format_field()
get_format_structure()
get_create_structure()
get_read_structure()
get_read_structure_from_properties()
get_update_structure()
Generic exporter to take a stdClass and prepare it for return by webservice, or as the context for a template.
templatable classes implementing export_for_template, should always use a standard exporter if it exists.
External functions should always use a standard exporter if it exists.
templatable classes implementing export_for_template, should always use a standard exporter if it exists.
External functions should always use a standard exporter if it exists.
| __construct($data, $related = array() X-Ref |
| Constructor - saves the persistent object, and the related objects. param: mixed $data - Either an stdClass or an array of values. param: array $related - An optional list of pre-loaded objects related to this object. |
| export(renderer_base $output) X-Ref |
| Function to export the renderer data in a format that is suitable for a mustache template. This means raw records are generated as in to_record, but all strings are correctly passed through \core_external\util::format_text (or \core_external\util::format_string). param: renderer_base $output Used to do a final render of any components that need to be rendered for export. return: stdClass |
| get_format_parameters($property) X-Ref |
| Get the format parameters. This method returns the parameters to use with the functions \core_external\util::format_text(), and \core_external\util::format_string(). To override the default parameters, you can define a protected method called 'get_format_parameters_for_<propertyName>'. For example, 'get_format_parameters_for_description', if your property is 'description'. Your method must return an array containing any of the following keys: - context: The context to use. Defaults to $this->related['context'] if defined, else throws an exception. - component: The component to use with \core_external\util::format_text(). Defaults to null. - filearea: The filearea to use with \core_external\util::format_text(). Defaults to null. - itemid: The itemid to use with \core_external\util::format_text(). Defaults to null. - options: An array of options accepted by \core_external\util::format_text() or \core_external\util::format_string(). Defaults to []. - striplinks: Whether to strip the links with \core_external\util::format_string(). Defaults to true. param: string $property The property to get the parameters for. return: array |
| get_other_values(renderer_base $output) X-Ref |
| Get the additional values to inject while exporting. These are additional generated values that are not passed in through $data to the exporter. For a persistent exporter - these are generated values that do not exist in the persistent class. For your convenience the format_text or format_string functions do not need to be applied to PARAM_TEXT fields, it will be done automatically during export. These values are only used when returning data via {@link self::export()}, they are not used when generating any of the different external structures. Note: These must be defined in {@link self::define_other_properties()}. param: renderer_base $output The renderer. return: array Keys are the property names, values are their values. |
| read_properties_definition() X-Ref |
| Get the read properties definition of this exporter. Read properties combines the default properties from the model (persistent or stdClass) with the properties defined by {@link self::define_other_properties()}. return: array Keys are the property names, and value their definition. |
| format_properties($properties) X-Ref |
| Recursively formats a given property definition with the default fields required. param: array $properties List of properties to format return: array Formatted array |
| properties_definition() X-Ref |
| Get the properties definition of this exporter used for create, and update structures. The read structures are returned by: {@link self::read_properties_definition()}. return: array Keys are the property names, and value their definition. |
| define_other_properties() X-Ref |
| Return the list of additional properties used only for display. Additional properties are only ever used for the read structure, and during export of the persistent data. The format of the array returned by this method has to match the structure defined in {@link \core\persistent::define_properties()}. The display properties can however do some more fancy things. They can define 'multiple' => true to wrap values in an external_multiple_structure automatically - or they can define the type as a nested array of more properties in order to generate a nested external_single_structure. You can specify an array of values by including a 'multiple' => true array value. This will result in a nested external_multiple_structure. E.g. 'arrayofbools' => array( 'type' => PARAM_BOOL, 'multiple' => true ), You can return a nested array in the type field, which will result in a nested external_single_structure. E.g. 'competency' => array( 'type' => competency_exporter::read_properties_definition() ), Other properties can be specifically marked as optional, in which case they do not need to be included in the export in {@link self::get_other_values()}. This is useful when exporting a substructure which cannot be set as null due to webservices protocol constraints. E.g. 'competency' => array( 'type' => competency_exporter::read_properties_definition(), 'optional' => true ), return: array |
| define_properties() X-Ref |
| Return the list of properties. The format of the array returned by this method has to match the structure defined in {@link \core\persistent::define_properties()}. Howewer you can add a new attribute "description" to describe the parameter for documenting the API. Note that the type PARAM_TEXT should ONLY be used for strings which need to go through filters (multilang, etc...) and do not have a FORMAT_* associated to them. Typically strings passed through to format_string(). Other filtered strings which use a FORMAT_* constant (hear used with format_text) must be defined as PARAM_RAW. return: array |
| define_related() X-Ref |
| Returns a list of objects that are related to this persistent. Only objects listed here can be cached in this object. The class name can be suffixed: - with [] to indicate an array of values. - with ? to indicate that 'null' is allowed. return: array of 'propertyname' => array('type' => classname, 'required' => true) |
| get_context_structure() X-Ref |
| Get the context structure. return: array |
| get_format_field($definitions, $property) X-Ref |
| Get the format field name. param: array $definitions List of properties definitions. param: string $property The name of the property that may have a format field. return: bool|string False, or the name of the format property. |
| get_format_structure($property, $definition, $required = VALUE_REQUIRED) X-Ref |
| Get the format structure. param: string $property The name of the property on which the format applies. param: array $definition The definition of the format property. param: int $required Constant VALUE_*. return: external_format_value |
| get_create_structure() X-Ref |
| Returns the create structure. return: external_single_structure |
| get_read_structure($required = VALUE_REQUIRED, $default = null) X-Ref |
| Returns the read structure. param: int $required Whether is required. param: mixed $default The default value. return: external_single_structure |
| get_read_structure_from_properties($properties, $required = VALUE_REQUIRED, $default = null) X-Ref |
| Returns the read structure from a set of properties (recursive). param: array $properties The properties. param: int $required Whether is required. param: mixed $default The default value. return: external_single_structure |
| get_update_structure() X-Ref |
| Returns the update structure. This structure can never be included at the top level for an external function signature because it contains optional parameters. return: external_single_structure |
