praiadeseselle/wire/core/Module.php
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<?php namespace ProcessWire;
/**
* ProcessWire Module Interface
*
* Provides the base interfaces required by modules.
*
* ProcessWire 3.x, Copyright 2018 by Ryan Cramer
* https://processwire.com
*
* #pw-summary Module is the primary PHP interface for module types in ProcessWire.
* #pw-body =
* The Module interface doesn't actually require any specific methods,
* (other than the `className()` method) but is required as an interface
* to state your intention to ProcessWire that your class is to be used
* as a Module. As a result, all methods are optional, but including the
* Module interface is not. You must also provide a means by which ProcessWire
* can query information about your module. More on that below.
*
* ### Implementing the Module interface
*
* Below is how you indicate a PHP class is a ProcessWire Module:
*
* ~~~~~
* <?php namespace ProcessWire;
* class HelloWorld extends WireData implements Module {
* // your class implementation
* }
* ~~~~~
*
* Modules should either extend the `WireData` class, or if they are a
* predefined type already recognized by ProcessWire, they should extend
* the base class of that type (or another module based upon it). Base
* module types include:
*
* - `AdminTheme`
* - `Fieldtype`
* - `FileCompilerModule`
* - `FileValidatorModule`
* - `Inputfield`
* - `ModuleJS`
* - `PageAction`
* - `Process`
* - `Textformatter`
* - `WireAction`
* - `WireMail`
* - `WireSessionHandler`
*
* ### Requirements for Modules
*
* 1. Must provide a means of getting information about the module.
* This can be with a static `getModuleInfo()` method, or with
* a `ModuleName.info.php` file or a `ModuleName.info.json` file.
*
* 2. Must provide a `className()` method that returns the module
* class name. All Wire derived objects already do this, so
* you don't have to provide it unless your Module does not
* descend from a ProcessWire class. We recommend that your
* modules extend the Wire or WireData class.
*
* 3. If you have a `__construct()` method, it must not require any
* particular arguments.
*
* 4. If your module is configurable, it must also fulfill the
* `ConfigurableModule` interface.
*
* ### Optional methods
*
* - `__construct()` - Called before module config is populated.
*
* - `init()` - Called after module config is populated.
*
* - `ready()` - Called after init(), after API ready. Note that ready() applies to 'autoload' modules only.
*
* - `install()` - Called when module is installed.
*
* - `uninstall()` - Called when module is uninstalled.
*
* - `upgrade($fromVersion, $toVersion)` - Called on version change.
*
* - `isAutoload()` - Returns a boolean indicating whether the module should be loaded at boot.
* Can also be specified as a property in module information.
*
* - `isSingular()` - Returns a boolean indicating whether the module is limited to one instance or not.
* Can also be specified as a property in module information.
*
* - `getModuleInfo()` - A static method that returns an array of module information.
*
* These methods are outlined in more detail further down on this page.
*
* -----------------------------------------------------------------
*
* ## Module Information
*
* Modules must have some way to communicate information about
* themselves to ProcessWire. This is done by providing an
* associative array containing this module information. One
* of the following implementations is required:
*
* 1. `getModuleInfo()` static method in your module class that returns an array.
* 2. `YourModuleClass.info.php` file that populates an `$info` array.
* 3. `YourModuleClass.info.json` file that contains an `info` object.
*
* Each of these are demonstrated below:
*
* **1) Static getModuleInfo() method:**
* ~~~~~
* public static function getModuleInfo() {
* return array(
* 'title' => 'Your Module Title',
* 'version' => 1,
* 'author' => 'Your Name',
* 'summary' => 'Description of what this module does and who made it.',
* 'href' => 'http://www.domain.com/info/about/this/module/',
* 'autoload' => false, // set to true if module should auto-load at boot
* 'requires' => array(
* 'HelloWorld>=1.0.1',
* 'PHP>=5.4.1',
* 'ProcessWire>=2.4.1'
* ),
* 'installs' => array('Module1', 'Module2', 'Module3'),
* );
* }
* ~~~~~
*
* **2) YourModuleClass.info.php file:**
* Your file should populate an `$info` variable with an array exactly like
* described for #1 above, i.e.
*
* ~~~~~
* $info = array(
* 'title' => 'Your Module Title',
* 'version' => 1,
* // and so on, like the static version above
* );
* ~~~~~
*
* **3) YourModuleClass.info.json file:**
* Your JSON file should contain nothing but an object/map of the module info:
*
* ~~~~~
* {
* "title": "Your Module Title",
* "version": 1
* }
* ~~~~~
* Note: The example JSON above just shows "title" and "version", but you would
* likely add more than that as needed, like shown in the static version above.
*
* -----------------------------------------------------------------
*
* ## Module information properties
*
* ### Required info properties
*
* - `title` (string): The module's title.
*
* - `version` (int|string): An integer or string that indicates the version number.
*
* - `summary` (string): Summary text of the module (1 sentence recommended).
*
* ### Optional info properties
*
* - `href` (string): URL to more information about the module.
*
* - `requires` (array|string): Array or CSV string of module class names that are required by this
* module in order to install.
*
* - **Requires Module version:** If a particular version of the module is required, then specify an operator
* and version number after the module name, like this: "HelloWorld>=1.0.1".
*
* - **Requires PHP version:** If a particular version of PHP is required, then specify "PHP" as the module name
* followed by an operator and required version number, like this: "PHP>=5.6.0".
*
* - **Requires ProcessWire version:** If a particular version of ProcessWire is required, then specify
* ProcessWire followed by an operator and required version number, like this: "ProcessWire>=2.4.1".
*
* - `installs` (array|string): Array or CSV string of module class names that this module will handle install
* and uninstall for.
* This causes ProcessWire's dependency checker to ignore them and it is assumed your module will handle
* them. If your module does not handle them, ProcessWire will automatically install/uninstall them
* immediately after your module.
*
* - `permanent` (boolean): This property is intended for only for core modules. When true, a module cannot be uninstalled.
*
* - `permission` (string): Name of permission required of a user before ProcessWire will load the module (for non-superusers).
* Note that ProcessWire will not install this permission if it doesn't yet exist. To have it installed automatically,
* see the _permissions_ option below this.
*
* - `permissions` (array): Array of permissions that ProcessWire will install (and uninstall) automatically.
* Permissions should be in the format: array('permission-name' => 'Permission description').
*
* - `icon` (string): Optional icon name to represent this module.
* Currently uses [font-awesome](http://fortawesome.github.io/Font-Awesome/) icon names.
* Omit the "fa-" part, leaving just the icon name.
*
* - `singular` (boolean): Is only one instance of this module allowed? (default=auto-detect).
* This is good for any module that you want to eliminate the possibility of multiple instances
* running at once. For instance, modules that become API variables are typically singular, whereas
* something like an Inputfield module would not be singular. When not specified, modules that extend an
* existing base type typically inherit the singular setting from the module they extend.
*
* - `autoload` (boolean|string|callable|int): Should this module load automatically at boot? (default=false).
* This is good for modules that attach hooks or that need to otherwise load on every single
* request. Autoload is typically specified as a boolean true or false. Below are the different ways
* autoload can be specified:
*
* - **Boolean:** Specify true or false to indicate the module should either always autoload (true)
* or never autoload (false).
*
* - **Selector string:** The module will be automatically loaded only if the current page matches the
* selector string. For example, a selector string of `template=admin` would mean the module will
* only autoload in the admin side of ProcessWire.
*
* - **Callable function:** The module will automatically load only if the given callable function
* returns true.
*
* - **Integer:** If given integer 2 or higher, it will autoload the module before other autoload
* modules (in /site/modules/). Higher numbers autoload before lower numbers.
*
* - `searchable` (string): When present, indicates that module implements a search() method
* consistent with the SearchableModule interface. The value of the 'searchable' property should
* be the name that the search results are referred to, using ascii characters of a-z, 0-9, and
* underscore. See the SearchableModule interface in this file for more details.
*
* -----------------------------------------------------------------------------------------------
*
* ## Module Methods
*
* ### __construct()
*
* This method is called by PHP immediately when the module is instantiated, and before any
* configuration data has been populated to the module. This method must not have any required
* arguments. This method is a good place for populating default configuration values or any
* other initialization you want to occur before ProcessWire sees it or populates anything to it.
* Your construct method should not assume that the module will actually be executed, as
* ProcessWire may instantiate a module for informational reasons.
*
* ### init()
*
* This method is called after `__construct()` and after any configuration data has been populated
* to the module. It is called before the module is handed over to the requester. This is a good
* place to perform any initialization that requires configuration data and can be a good place to
* attach hooks.
*
* ### ready()
*
* This method is used only by _autoload_ modules. It is called when the entire ProcessWire API
* is ready to use. This may be preferable to the `init()` method for autoload modules because
* they are loaded and init()'d at boot, when everything else is loading too. The ready() method
* is called once the boot has completed and all API variables are ready to use, but before any
* page has been rendered. This makes it an excellent place to attach hooks.
*
* ### isSingular()
*
* Indicates whether only one instance of a module is allowed to exist in memory.
* If this method is not present, it will be auto-determined based on module type. If it is provided
* in the module information array (discussed above) that will override this method.
*
* This method exists primarily so that base module types may specify a singular state and have it
* automatically inherit to any modules extending the type. If you are not extending a base module
* type then you can implement this method, or you can provide it in your module info array.
*
* A module that returns TRUE is referred to as a "singular" module, because there will never be any more
* than a single instance of the module running.
*
* Return TRUE if this module is a single reusable instance, returning the same instance on every
* call from Modules. Return FALSE if this module should return a new instance on every call from Modules.
*
* - Singular modules will have their instance active for the entire request after instantiated.
* - Non-singular modules return a new instance on every `$modules->get("YourModule")` call.
* - Modules that attach hooks are usually singular.
* - Modules that may have multiple instances (like `Inputfield` modules) should _not_be singular.
*
* If you are having trouble deciding whether to make your module singular or not, be sure to read
* the documentation below for the `isAutoload()` method, because if your module is 'autoload' then
* it's probably also 'singular'.
*
* ### isAutoload()
*
* Should this module be automatically loaded at boot?
* If this method is not present, it will be auto-determined based on module type. If it is provided
* in the module information array (discussed above) that will override this method.
*
* This method exists primarily so that base module types may specify an autoload state and have it
* automatically inherit to any modules extending the type. If you are not extending a base module
* type then you can implement this method, or you can provide it in your module info array.
*
* A module that returns TRUE is referred to as an "autoload" module, because it automatically loads as
* part of ProcessWire's boot process. Autoload modules load before PW attempts to handle the web request.
*
* Return TRUE if this module is automatically loaded at runtime.
* Return FALSE if this module must be requested via `$modules->get('ModuleName')` method before it is loaded.
*
* Modules that are intended to attach hooks in the application typically should be autoload because
* they listen in to classes rather than have classes call upon them. If they weren't autoloaded, then
* they might never get to attach their hooks.
*
* Modules that shouldn't be autoload are those that may or may not be needed at runtime, for example
* `Fieldtype` and `Inputfield` modules.
*
* _As a side note, I can't think of any reason why a non-singular module would ever be autoload. The fact that
* an autoload module is automatically loaded as part of PW's boot process implies it's probably going to be the
* only instance running. So if you've decided to make your module 'autoload', then is safe to assume you've
* also decided your module will also be singular (if that helps anyone reading this)._
*
* ### install()
*
* This method is called when the module is first installed. If implemented, install() methods typically are
* defined hookable as `public function ___install()`.
*
* The method should prepare the environment with anything else needed by the module, such as newly created
* fields, pages, templates, etc. or installation of other modules.
*
* If the install() method determines that the module called be installed for some reason, it should
* throw a `WireException.`
*
* ### uninstall()
*
* This method is called when the module is uninstalled. If implemented, uninstall() methods typically are
* defined hookable as `public function ___uninstall()`.
*
* This method should undo everything done by the install() method, or undo anything created by the module,
* restoring the system back to the state that it was in before the module was installed.
*
* If the uninstall() method determines that it cannot proceed for some reason, it should throw
* a `WireException`.
*
* ### upgrade($fromVersion, $toVersion)
*
* This method is called when a version change is detected. This method should make any adjustments needed
* to support the module from one version to another. The previous known version ($fromVersion) and new
* version ($toVersion) are provided as arguments.
*
* If implemented, upgrade() methods typically are defined hookable as `public function ___upgrade(...)`.
* If the upgrade cannot proceed for some reason, this method should throw a `WireException`.
*
*
*
*
* #pw-body
*
* The following methods may or may not be implemented, all are optional:
*
* #pw-method void install() Called when module is installed.
* #pw-method void uninstall() Called when module is uninstalled.
* #pw-method void upgrade($fromVersion, $toVersion) Called when a version change is detected for the module.
* #pw-method array getModuleInfo() Static method that returns array of module info (not required if module implements an info file instead).
* #pw-method void init() Called when the module is loaded, immediately after any configuration data has been populated to it.
* #pw-method void ready() For autoload modules only, called when the ProcessWire API is ready to use.
* #pw-method void setConfigData(array $data) Modules may optionally provide this method to receive config data from ProcessWire.
* #pw-method bool isSingular() #pw-internal
* #pw-method bool isAutoload() #pw-internal
*
*
*/
interface Module {
/**
* Return an array of module information
*
* @return array
*
* public static function getModuleInfo();
*
*/
/**
* Method to initialize the module.
*
* While the method is required, if you don't need it, then just leave the implementation blank.
*
* This is called after ProcessWire's API is fully ready for use and hooks. It is called at the end of the
* bootstrap process. This is before PW has started retrieving or rendering a page. If you need to have the
* API ready with the $page ready as well, then see the ready() method below this one.
*
* public function init();
*
*/
/**
* Method called when API is fully ready and the $page is determined and set, but before a page is rendered.
*
* Optional and only called if it exists in the module.
*
* public function ready();
*
*/
/**
* Return this objects class name
*
* If your Module descends from Wire, or any of it's derivatives (as would usually be the case),
* then you don't need to implement this method as it's already present.
*
* @param array|bool|null $options Optionally an option or boolean for 'namespace' option:
* - `lowercase` (bool): Specify true to make it return hyphenated lowercase version of class name
* - `namespace` (bool): Specify false to omit namespace from returned class name. Default=true.
* - Note: when lowercase=true option is specified, the namespace=false option is required.
* @return string
* @see Wire::className()
*
*/
public function className($options = null);
/**
* Perform any installation procedures specific to this module, if needed.
*
* The Modules class calls this install method right after performing the install.
*
* If this method throws an exception, PW will catch it, remove it from the installed module list, and
* report that the module installation failed. You may specify details about why with the exception, i.e.
* throw new WireException("Can't install because of ...");
*
* This method is OPTIONAL, which is why it's commented out below.
*
* public function ___install();
*
*/
/**
* Perform any uninstall procedures specific to this module, if needed.
*
* It calls this uninstall method right before completing the uninstall.
*
* This method is OPTIONAL, which is why it's commented out below.
*
* public function ___uninstall();
*
*/
/**
* Called when a version change is detected on the module
*
* public function ___upgrade($fromVersion, $toVersion);
*
*/
/**
* Is this module intended to be only a single instance?
*
* @return bool
*
* public function isSingular();
*
*/
/**
* Is this module automatically loaded at runtime?
*
* @return bool
*
* public function isAutoload();
*
*/
}
/**
* Standard module interface with all methods.
*
* This interface is not intended to be used for anything other than for code hinting purposes.
*
*/
interface _Module {
public function install();
public function uninstall();
public function upgrade($fromVersion, $toVersion);
/** @return array */
public static function getModuleInfo();
public function init();
public function ready();
public function setConfigData(array $data);
/** @return bool */
public function isSingular();
/** @return bool */
public function isAutoload();
/**
* @param InputfieldWrapper|array|null $data
* @return InputfieldWrapper
*
*/
public function getModuleConfigInputfields($data = null);
/**
* @return array
*
*/
public function getModuleConfigArray();
}
/**
* Interface SearchableModule
*
* Interface for modules that implement a method and expected array return value
* for completing basic text searches (primarily for admin search engine).
*
* It is optional to add this interface to "implements" section of the module class definition.
* However, you must specify a "searchable: name" property in your getModuleInfo() method in
* order for ProcessWire to recognize the module is searchable. See below for more info:
*
* ~~~~~~
* public static function getModuleInfo() {
* return array(
* 'searchable' => 'name',
*
* // You'll need the above 'searchable' property returned by your getModuleInfo().
* // The value of 'name' should be the name by which search results should be referred to
* // if the user wants to limit the search to this module. For instance, if your module
* // was called “ProcessWidgets”, youd probably choose the name “widgets” for this.
* // If the module represents an API variable, the name should be the same as the API variable.
* // ...
* );
* }
* ~~~~~
*
*/
interface SearchableModule {
/**
* Search for items containing $text and return an array representation of them
*
* You may also implement this method as hookable, i.e. ___search(), but note that youll
* want to skip the "implements SearchableModule" in your class definition.
*
* Must return PHP array in the format below. For each item in the 'items' array, Only the 'title'
* and 'url' properties are required for each item (the rest are optional).
*
* $result = array(
* 'title' => 'Title of these items',
* 'total' => 999, // total number of items found, or omit if pagination not supported or active
* 'url' => '', // optional URL to view all items, or omit for a PW-generated one
* 'properties' => array(), // optional list of supported search properties, only looked for if $options['info'] === true;
* 'items' => array(
* [0] => array(
* 'id' => 123, // Unique ID of item (optional)
* 'name' => 'Name of item', // (optional)
* 'title' => 'Title of item', // (*required)
* 'subtitle' => 'Secondary/subtitle of item', // (optional)
* 'summary' => 'Summary or description of item', // (optional)
* 'url' => 'URL to view or edit the item', // (*required)
* 'icon' => 'Optional icon name to represent the item, i.e. "gear" or "fa-gear"', // (optional)
* 'group' => 'Optionally group with other items having this group name, overrides $result[title]', // (optional)
* 'status' => int, // refers to Page status, omit if not a Page item (optional)
* 'modified' => int, // modified date of item as unix timestamp (optional)
* [1] => array(
* ...
* ),
* ),
* );
*
* PLEASE NOTE:
* When ProcessWire calls this method, if the module is not already loaded (autoload),
* it instantiates the module but DOES NOT call the init() or ready() methods. Thats because the
* search method is generally self contained. If you need either of those methods to be called,
* and your module is not autoload, you should call the method(s) from your search() method.
*
* About the optional “properties” index:
* If ProcessWire calls your search() method with $options['info'] == true; then it is likely wanting to see
* what properties are available for search. For instance, properties for a Module search might be:
* [ 'name', 'title', 'summary' ]. Implementation of the properties index is optional, and for PWs informational
* purposes only.
*
* @param string $text Text to search for
* @param array $options Options array provided to search() calls:
* - `edit` (bool): True if any 'url' returned should be to edit rather than view items, where access allows. (default=true)
* - `multilang` (bool): If true, search all languages rather than just current (default=true).
* - `start` (int): Start index (0-based), if pagination active (default=0).
* - `limit` (int): Limit to this many items, or 0 for no limit. (default=0).
* - `type` (string): If search should only be of a specific type, i.e. "pages", "modules", etc. then it is
* specified here. This corresponds with the getModuleInfo()['searchable'] name or item 'group' property.
* Note that ProcessWire wont call your search() method if the type cannot match this search.
* - `operator` (string): Selector operator type requested, if more than one is supported (default is %=).
* - `property` (string): If search should limit to a particular property/field, it is named here.
* - `verbose` (bool): True if output can optionally be more verbose, false if not. (default=false)
* - `debug` (bool): True if DEBUG option was specified in query. (default=false)
* - `help` (bool): True if we are just querying for help/info and are not using the search results. (default=false)
* @return array
*
*/
public function search($text, array $options = array());
}