Modul:Foundationclass/doc

This is a Template for Class Modules. It implements a class in Lua using Module:Middleclass and provides serveral static and public methods, commonly used in the typical form>page>store process.

Usage

This is in a way an abstract class. It provides some static and public methods for resuse, and also maintains a store of private properties. If can be used to fast and easily create a typical class module that can handle:

• creating an appropriate form
• supplying your respective template with functionalities for
  • object initialization via template parameters, arguments, and datastore (self initialization)
  • general data assesment (basic plausibility tests)
  • data storage (supported are cargo and semantic media wiki)
  • error and warnings management
  • output and rendering
• creating a template documentation

You can and should adjust the module in this methods:

• individual attribute adjustment for the semantic forms fields
• individual plausibility testing
• individual data initialization
• individual data store adjustments before stashing

You can access the objects core data store with getCoreData() and its uid with getUid().

How-To

This is, what you have to do (see Useful templates for content of the corresponding pages):

1. create your base module Module:Name
2. create your class module Module:Name/class. For this, copy lua sample code below this list and apply the following changes:
   1. change all occurences of className into your class name
   2. change the highlighted lines and replace 'Name' with the Name of your module
   3. implement the abstract methods:
      1. myAgumentProcessing(coreData)
      2. myDataAdjustments(data)
      3. myPlausibilityTest(args)
      4. myStashAdjustments(stash)
      5. static:mySfDynamicFieldAttribute(fieldname, attribute, value)
   4. for the usual output generation, implement (shells given in sample code)
      1. addInfobox()
      2. addPageBody()
3. create and fill your configuration Module:Name/config
4. create your template Template:Name
5. create your form Form:Name
6. if applicable, create your category page Category:Name
7. fill in documentation:
   1. of your base module (place one invoke below the first comment and before the includeonly)
   2. of your class module (new docu for your own public, static and private methods (which you can probably copy from other classes) and one invoke to show the inheritance. Sample code provided in Useful templates
   3. of your class module's configuration (just copy content)
   4. of your template (one invoke below the first comment and before the includeonly)

Useful templates

show base module:
⧼classengine-template-module-page⧽

show base module's documentation page:
⧼classengine-template-module-documentation-page⧽

show class module:
⧼classengine-template-module-class-page⧽

show class module's documentation page:
⧼classengine-template-module-class-documentation-page⧽

show class configuration (sample file):

local superglobal = mw.loadData( 'Module:Foundationclass/globalconfig' ) local form = { enable = true, -- Do you want to create a form for this class? Note: When you don't want to have a form _page_, but need this to be a part of another form (as a holds-template form), set this to true! name = '', -- The name of the form, i.e. the form will be placed an page [[Form:Formname]]. If you don't need an actual form page, leave this empty (e.g. if this is a prot of another form as holds-template or such). teaserText = '', -- This is the text displayed on the form:name page (before you see the actual form)) typeCreateLink = 'none', -- This field lets you choose, what kind of object create link is provided to the user on the form page: is there none, a formlink, or a forminput field? possible values are: 'none' (default), 'forminput', 'formlink' createInfotext = '', -- This is the short text that appears right above the input field. Short being the important part. Please limit yourself to a short sentence. createInputPlaceholder = '', -- Placeholder text that is shwon in the form create input field createInputQueryString = '', -- You can use this option to pass information to the form; this information generally takes the form of ''templateName[fieldName]=value''. It should look like a typical URL query string; an example would be "query string=namespace=User&User[Is_employee]=yes". createLinkPageName = '', -- With this, you can have the name of the page created by the form to be set automatically. You can use any of the parameters ''<template-name[field-name]>'' or ''<unique number>''. The latter takes options start=x, unique, random, and a number (length of id string, default 6). -- IMPORTANT: If you want to use the one step process with a createLinkPageName, you have to add the output if your class's sfGenerateFormInfoTag() in comments to your form page!!! -- this is a workaround for a semantic forms bug. see https://phabricator.wikimedia.org/T123230 for more information createLinkQueryString = '', -- You can use this option to pass information to the form; this information generally takes the form of ''templateName[fieldName]=value''. It should look like a typical URL query string; an example would be "query string=namespace=User&User[Is_employee]=yes". createLinkType = 'plain', -- This field lets you choose, what kind of form link is used to link to the form page: is it a plain link or a button (with parameter submission via get or post), possible values are nil, 'plain', 'button', 'post button' labelCreate = '', -- label for create entity labelEdit = '', -- label for edit entity headerText = '', -- this is the text displayed above the form notification = '', -- this notification will be displayed above your form sectionList = {}, -- if you want to have hl2 sections of text after the datafields and before the freetext, name them here. Use strings for names of section headlines allowsFreeText = false, -- will the form have a free text field? freeTextPreload = nil, -- when this is set your free text will have a preload=<freeTextPreload> statement. of course only when allowsFreeText is set to true buttons = {'save', 'preview', 'changes', 'cancel'}, -- which buttons should appera below the form fieldSize = 80, -- what is the default size= for the form fields textareaAttributes = { -- the defaults for your textarea fields cols = 80, rows = 4, autogrow = true, editor = 'wikieditor', -- other values would be false or 'none'... }, fieldOrder = { -- the order in which the form fields appear. NOTE: a parameter not in this list, will not appear in the form!! -- YOU HAVE TO FILL THIS TABLE! Put in here all parameters, that are used in the form, even if you have your own sfGenerateForm() implemented using a different table. -- Reason: This is also be used in plausibility tests '', }, } local global = { cargoTable = '', -- if you use dataStore cargo, name the table here. if you do not name a table, no persistant cargo data will be stored for that class category = '', -- the mediawiki category, the entity is placed into delimiter = ',', -- see to it, that the delimiter is not a character, that will be encoded by mw.text.encode. CargoUtil.store encodes the data for security reasons description = '', -- a short description of the entity. will be displayed on the template documentation page for example entityTitle = '', -- generic title for the entity gardeningCategory = superglobal.gardeningCategory, -- the category, objects with erroneous/inplausible data will be put into namespace = '', -- if you put this entity on a special namespace, name it here. NOTE: You have to be precise. This is case sensitive. But omit the colon. smwIsSubobject = false, -- when using datastore smw: is this stored as subobject (and not as normal data)? smwUseStorage = true, -- if you use dataStore smw, set this to true if you actually want persistant smw data to be stored for that class } local parameter = { -- this is your list of parameters. you put all data here, that you would like to handle -- * parameters of your form (and thus your template) -- * when you fill td_type, your parameter will be shown on the template documentation page -- * when you add the parameter name to form.fieldOrder, it will be added to the form and processed in plausibility tests -- * add also data, that you only want to store (omit these from form.fieldOrder and leave the sf table, probably best, to leave td_type unset, too). -- * hint: if you need a row in your table as information, add pseudo parameter w/o entry in fieldOrder, w/o sf table, w/o td_type, and w/o cargo/property entries name = { cardinality = 'single|list', cargo_hidden = false, -- takes no value. If set, the field is not listed in either Special:ViewTable or Special:Drilldown, although it is still queriable. cargo_size = nil, -- for fields of type "Text", sets the size of this field, i.e. the number of characters; default is 300 cargo_type = '', description = '', label = '', property_name = '', -- please use underscores (_) instead of spaces property_type = '', -- possible values are: Annotation URI, Boolean, Code, Date, Email, Number, Page (default), Quantity, Telephone Number, Temperature, Text, URL severity = 'mandatory|suggested', sf = { -- note: this list is incomplete. see [[Module:SFfield/config]] for a complete list of supported attributes -- note also: mandatory, list, property and values are derived form fields "above" this table -- IMPORTANT: If you want this to be a regular form parameter, you have to add this table. even, if you leave it empty. -- also: keep in mind that a parameter appears in the form only if you add its name to form.fieldOrder above cargo_field = '', cargo_table = '', class = '', default = '', default_filename = '', existing_values_only = true, hidden = true, image_preview = true, input_type = '', mapping_cargo_field = '', mapping_cargo_table = '', mapping_template = '', max_values = 0, maxlength = 0, placeholder = '', restricted = '', -- e.g.: restricted = superglobal.restrictionRole, show_on_select = {}, -- takes either a string (in case of input type checkbox) or a table. table must be of format "selected value" : "field shown" size = 0, unique = true, unique_for_category = true, unique_for_namespace = true, uploadable = true, values_dependent_on = '', values_from_category = '', values_from_namespace = '', }, td_default = '', td_type = '', values = {}, }, } local template = { name = 'nameOfYourTemplate', -- the name of your template. e.g.: your template can be found on the page [[Template:nameOfYourTemplate]] templateDocumentationSeeAlso = {'List', 'of', 'similar', 'or', 'related', 'templates'} -- used in the see also-section of your template documentation } return { form = form, global = global, parameter = parameter, template = template, }

show configuration documentation page:
⧼classengine-template-module-config-documentation-page⧽

show template:
⧼classengine-template-template-page⧽

show template documentation page:
⧼classengine-template-template-documentation-page⧽

show form:
⧼classengine-template-form-page⧽

show category:
⧼classengine-template-category-page⧽

show gardening category:
⧼classengine-template-gardeningcategory-page⧽

private, public, class or instance

Zugriffsmatrix

-	public	private
instance	function MyClass:publicMethod() MyClass.publicProperty	local _privateMethod = function (self, var) _private[self]._privateProperty
class	function MyClass.static:staticMethod() MyClass.static.staticProperty -- accessing MyClass.staticProperty -- being "outside": MyClass:staticMethod() -- being inside a static method self:staticMethod() -- being inside a public method self.class:staticMethod()	local _privateMethod = function (self, var) local _privateProperty

private

property

you can declare a property private in one of two ways:

1. anywhere, preferably before your constructor, declare a local var to have a private propery, this is not recommended, but it allows you to declare a private property, that can be used by your static methods. thus being somewhat private static
2. for your instances, you can use the table _private[self] as a private store. it is available after your construrctor has been called (since this is an instance attribute)

method

a private method is declared thus: local _privateMethod = function(self, var). If you want to use the method in an public/static/other private method before it is declared (aka: the calling method is on a lower line number than your private method's declaration), decare it ahead and define it later:

local _privateImportantMethod
..
privateImportantMethod = function(self, var)

private class and instance methods are basically the same.

public

property

can be dclared via class.property. DONT DO THIS. It is bad style!

method

Declare them class:publicMethod(var). They are, after all, public

NOTE: public methods can be called by an instance, but also as static method:

function Class:public()
	return 'public: ' .. tostring(self)
end

local me = Class:new()
me.public()	-- returns "public: Instance of class Class"
Class:public()	-- returns "public: class Class"

static

property

Declare a static property like this: class.static.myProperty = 'Hello World'. This produces a public property, that can be accessed by the class, childclasses or instances via *.myProperty (replace * with class, object, childclass, ...)

method

Much the same as static properties, but you should use the colon operator: function Class.static:staticMethod() when definig the method. On accessig this method, you should use the dot-notation: function Class.staticMethod(self)

NOTE: Other than public methods, they can only be called by the class, but not by an instance:

function Class.static:static()
	return 'static: ' .. tostring(self)
end

local me = Class:new()
me.static()	-- returns "error:  attempt to call method 'static' (a nil value)"
Class:static()	-- returns "static: class Class"
Class.static(self)	-- this is not called via colon (:) operator as to preserve the childClass's scope when inheriting from this class

Methods

private methods

These private Methods can not be used by child classes!

_amIPlausible(self)

Returs true or false, whether the object is plausible or not (i.e. has no errors or 1+)

self

object, me

return

boolean, whether the object is plausible or not

_debug(self, level, text)

Adds output to the internal debug log.

self

object, me

level

int; mandatory

debug level for the message

text

string; mandatory

debug message text

return

void

_plausibilityTest(self, args)

Checks, if input provided via template is plausible enough, to represent the object (to be stored and displayed). Also fills the list of errors and does some argument preparation.

self

object, me

args

table, mandatory

arguments passed to the template to be checked

return

boolean, whether the object is plausible or not

Properties

private

Note: all private properties are stored in table _private[self]. _private is a static array that is indexed by self, so the table _private[self] holds all properties for instance self.

categories

table, holds the objects categories

coreData

table, holds the objects data ofter initializing

dbg

object, my instance of Module:Debug/class for debugging purposes

errors

table, a list of errors that occurred

fullpagename

string, name of currentpage including namespace

initialized

boolean, is this object properly initialized

loadedDataFromDataStore

boolean, did this object get its data from the data store

output

object of type mw.html, holds all output to be rendered()

pagename

string, name of current page (or current page's super page) w/o namespace

uid

string, uinique identifier ('NIL' if unset)

warnings

table, a list of warnings that came up

Configuration Data

This class holds gets its control data from the child class. Also, there is some global configuration data in Module:Foundationclass/globalconfig, that applies to all classes.

Dependencies

If you want to use Module:Foundationclass, you also need the following items (and their doc pages!):

• Module:Middleclass
• Module:Foundationclass/config
• Module:Foundationclass/classDoc
• Module:Foundationclass/globalconfig
• Module:CargoUtil and Extension:Cargo if you want to use it as a data store
• Module:SmwUtil and Extension:Semantic MediaWiki if you want to use it as a data store

also

• Module:Arguments
• Module:Collapse
• Module:Debug/class
• Module:Error
• Module:Infobox
• Module:Lua banner
• Module:Message box
• Module:SFfield
• Module:SFfield
• Module:TableTools
• Module:Yesno
• {{code}}
• Extension:TemplateData

and of course Extension:Semantic Forms

Also, have a look at the extended functionality of the Class engine.

Interface messages

To generate the Useful_templates, Foundationclass makes use of the following interface messages:

• MediaWiki:Classengine-content-documentation-methods
• MediaWiki:Classengine-content-documentation-properties
• MediaWiki:Classengine-template-module-page
• MediaWiki:Classengine-template-module-documentation-page
• MediaWiki:Classengine-template-module-class-page
• MediaWiki:Classengine-template-module-class-documentation-page
• MediaWiki:Classengine-template-module-config-documentation-page
• MediaWiki:Classengine-template-template-page
• MediaWiki:Classengine-template-template-documentation-page
• MediaWiki:Classengine-template-form-page
• MediaWiki:Classengine-template-category-page
• MediaWiki:Classengine-template-gardeningcategory-page
• MediaWiki:Classengine-template-property-page

Next in dev queue

1. have foundation class try to detect integer inputs (by td_type or cargo_type) and run a regexp in _plausibilityTest
2. have foundationclass use mw message system for printouts instead of hardcoded text
3. a template or page, that #autogenerates all categories, defined in Module:Foundationclass/globalconfig