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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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2004-02-21 19:27:12 +00:00
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<meta http-equiv="content-type"
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content="text/html; charset=ISO-8859-15">
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2004-02-17 21:08:08 +00:00
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<title>Module specification</title>
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</head>
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<body>
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<h1 style="text-align: center;">This document describes the module
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interface for LDAP Account Manager</h1>
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<br>
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<br>
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<h2>1. Location and naming of modules</h2>
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All LAM modules are placed in lib/modules/ and are named "<class
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name>.inc".<br>
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E.g. if you create a new module and its class name is "qmail" then the
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filename would be "qmail.inc".<br>
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<br>
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The class name of a module must contain only a-z, A-Z, 0-9, -, and _.<br>
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<br>
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<br>
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<h2>2. Class functions</h2>
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<h3>2.1. Static functions</h3>
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These functions are called without instanciating an object of the
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module class. They must not depend on class variables and are only
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allowed to call other static functions.<br>
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<br>
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<h3>2.1.1. get_alias</h3>
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<br>
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<table cellpadding="2" cellspacing="2" border="0"
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style="text-align: left; width: 300px;">
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<tbody>
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<tr>
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<td
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style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;"><span
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style="font-weight: bold;">function get_alias($scope)</span><br>
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</td>
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</tr>
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</tbody>
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</table>
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<br>
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This function returns a more descriptive string than the class name.
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Alias names are used for the buttons of the account pages and the
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module selection of the configuration wizard.<br>
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Please take care that your alias name is not too long. It may contain
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a-z, A-Z, 0-9, -, _ and spaces.<br>
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The <span style="font-weight: bold;">$scope</span> parameter defines
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the account type ("user", "group", "host" at this time).<br>
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<br>
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<h3>2.1.2. is_base_module</h3>
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<br>
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<table cellpadding="2" cellspacing="2" border="0"
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style="text-align: left; width: 300px; height: 30px;">
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<tbody>
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<tr>
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<td
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style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;"><span
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style="font-weight: bold;">function is_base_module($scope)</span><br>
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</td>
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</tr>
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</tbody>
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</table>
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<br>
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Returns <span style="font-weight: bold;">true</span> if your module is
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a base module and otherwise <span style="font-weight: bold;">false</span>.<br>
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<span style="font-weight: bold;">$scope</span> is the account type
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("user", "group", "host" at this time).<br>
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<br>
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Every account type needs at least one base module. A base module
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defines a full qualified account.<br>
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E.g. modules that use the object class posixAccount may be base modules
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as it makes sense to manage these Unix accounts. On the other hand the
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quota module is no base module as it needs posixAccount.<br>
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<br>
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<h3>2.1.3. get_ldap_filter</h3>
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<br>
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<table cellpadding="2" cellspacing="2" border="0"
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style="text-align: left; width: 300px; height: 30px;">
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<tbody>
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<tr>
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<td
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style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;"><span
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style="font-weight: bold;">function get_ldap_filter($scope)</span><br>
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</td>
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</tr>
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</tbody>
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</table>
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<br>
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Returns a string that can be used as part of a LDAP filter. Usually
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used to filter object classes.<br>
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<span style="font-weight: bold;">$scope</span> is the account type
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("user", "group", "host" at this time).<br>
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<br>
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All filter parts of the base modules are combined with OR and used to
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find the accounts for the lists.<br>
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<br>
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<span style="font-weight: bold;">Example: <span
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style="font-style: italic;">return "(objectClass=posixAccount)"</span></span><br>
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<br>
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<span style="font-weight: bold; color: rgb(255, 0, 0);">This function
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is only used for base modules. Standard modules do not need to
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implement it.</span><br>
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<br>
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<h3>2.1.4. get_dependencies</h3>
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<br>
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<table style="text-align: left; width: 300px; font-weight: bold;"
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border="0" cellspacing="2" cellpadding="2">
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<tbody>
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<tr>
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<td
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style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">function
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get_dependencies($scope)<br>
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</td>
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</tr>
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</tbody>
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</table>
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<br>
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This function returns a list of modules it depends on.<br>
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The <span style="font-weight: bold;">$scope</span> parameter defines
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the account type ("user", "group", "host" at this time).<br>
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<br>
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The return value is an array with two sub arrays, <span
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style="font-weight: bold;">"depends"</span> and <span
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style="font-weight: bold;">"conficts"</span>.<br>
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All values of the conflict array are string values with module names.<br>
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All values of the depends array are either string values with module
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names or arrays which include only string values with module names. If
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an element of the depends array is itself an array, this means that
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your module depends on one of these modules.<br>
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<br>
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<span style="font-weight: bold;">Example: </span><span
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style="font-weight: bold; font-style: italic;">return array("depends"
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=> array("posixAccount", array("qmail", "sendmail")), "conflicts"
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=> array("exim"));</span><br
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style="font-weight: bold; font-style: italic;">
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<br>
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<h3>2.1.5. get_profileOptions</h3>
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<br>
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<table cellpadding="2" cellspacing="2" border="0"
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style="text-align: left; width: 300px; height: 30px;">
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<tbody>
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<tr>
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<td
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style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;"><span
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style="font-weight: bold;">function get_profileOptions($scope)</span><br>
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</td>
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</tr>
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</tbody>
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</table>
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<br>
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This function defines what attributes will be used in the account
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profiles and their appearance in the profile editor.<br>
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<br>
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<span style="font-weight: bold;">$scope</span> is the account type
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("user", "group", "host" at this time).<br>
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The return value is an array that contains <span
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style="font-weight: bold;">meta HTML code</span>.<br>
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<br>
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The type "fieldset" is not allowed here.<br>
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<br>
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<br>
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<h3>2.2. Class functions</h3>
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<h3>2.2.1. Constructor</h3>
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<br>
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<table style="text-align: left; width: 300px; height: 30px;" border="0"
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cellspacing="2" cellpadding="2">
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<tbody>
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<tr>
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<td
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style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;"><span
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style="font-weight: bold;">function <module name> ($base)</span><br>
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</td>
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</tr>
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</tbody>
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</table>
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<br>
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Every module needs a constructor that has an<span
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style="font-style: italic;"> <span style="font-weight: bold;">account
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container</span></span> as argument $base.<br>
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With this account container you can interact with other modules and use
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several helper functions.<br>
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<br>
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<h3>2.2.2. module_ready</h3>
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<br>
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<table style="text-align: left; width: 300px; height: 30px;" border="0"
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cellspacing="2" cellpadding="2">
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<tbody>
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<tr>
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<td
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style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;"><span
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style="font-weight: bold;">function module_ready()</span><br>
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</td>
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</tr>
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</tbody>
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</table>
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<br>
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Your module might depend on input of other modules. This function
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determines if the module button on the account page is active or not.<br>
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The return value is <span style="font-weight: bold;">true</span> if
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your module accepts input, otherwise <span style="font-weight: bold;">false</span>.<br>
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<br>
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<h3>2.2.3. module_complete</h3>
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<br>
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<table cellpadding="2" cellspacing="2" border="0"
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style="text-align: left; width: 300px; height: 30px;">
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<tbody>
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<tr>
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<td
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style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;"><span
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style="font-weight: bold;">function module_complete()</span><br>
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</td>
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</tr>
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</tbody>
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</table>
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<br>
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This function is called after your module has processed the POST input
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data.<br>
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If there was an input error and you want to display a page again then
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return <span style="font-weight: bold;">false</span>. If <span
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style="font-weight: bold;">true</span> is returned the next module
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page will be displayed.<br>
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<br>
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<h3><br>
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</h3>
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<h2>3. Meta HTML code</h2>
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The modules are not allowed to display HTML code directly but return
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meta HTML code. This allows to have a common design for all module
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pages.<br>
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Meta HTML code is always returned as a three dimensional <span
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style="font-weight: bold;">array[a][b][c]</span> where <span
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style="font-weight: bold;">a</span> is the row number, <span
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style="font-weight: bold;">b</span> is the coumn number and <span
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style="font-weight: bold;">c</span> is is a <span
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style="font-style: italic;">data elememt</span>.<br>
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<br>
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<span style="font-weight: bold;">Format for <span
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style="font-style: italic;">data elements</span>:</span><br>
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<br>
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A <span style="font-style: italic;">data element</span> is an array
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which contains the data to display.<br>
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All <span style="font-style: italic;">data elements</span> must
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contail a value <span style="font-weight: bold;">"kind"</span> which
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defines what kind of element should be displayed.<br>
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<br>
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These are the possibilies for <span style="font-weight: bold;">kind</span>
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and what other options are implicated:<br>
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<br>
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<ul>
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<li><span style="font-weight: bold;">fieldset:</span> Inserts a
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fieldset.</li>
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<ul>
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<li><span style="font-weight: bold;">legend:</span> The legend of
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the fieldset.</li>
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<li><span style="font-weight: bold;">value:</span> A <span
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style="font-style: italic;">data element</span>. Can be used
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recursively.</li>
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</ul>
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<li><span style="font-weight: bold;">help:</span> Adds a help link.</li>
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<ul>
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<li><span style="font-weight: bold;">value:</span> The help number
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for the help entry.</li>
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</ul>
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<li><span style="font-weight: bold;">input:</span> Adds a HTML input
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element.</li>
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<ul>
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<li><span style="font-weight: bold;">name:</span> The name of the
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element, will be used later as variable name when user input is
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returned.</li>
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<li><span style="font-weight: bold;">type:</span> allowed values:
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submit, reset, checkbox, text, password, file, hidden</li>
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<li><span style="font-weight: bold;">checked:</span> Boolean value,
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if true a checkbox will be checked. This value is only needed or
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checkboxes.</li>
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<li><span style="font-weight: bold;">disabled:</span> Boolean
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value, if true the element will be disabled.</li>
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<li><span style="font-weight: bold;">size:</span> The length of the
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input element, only used for text, password and file.</li>
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<li><span style="font-weight: bold;">maxlength:</span> The maximum
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size of the input element, only used for text, password and file.</li>
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<li><span style="font-weight: bold;">value:</span> The element will
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have this value as default. Button elements will have this as caption.</li>
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</ul>
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<li><span style="font-weight: bold;">select:</span> This will add a
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select field.</li>
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<ul>
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<li><span style="font-weight: bold;">name:</span> The name of the
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element, will be used later as variable name when user input is
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returned.</li>
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<li><span style="font-weight: bold;">multiple:</span> Boolean
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value, if set to true the user can select more than one entry.</li>
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<li><span style="font-weight: bold;">options:</span> Array of
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|
string. This is the list of option values the user can select.</li>
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|
<li><span style="font-weight: bold;">options_selected:</span> Array
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|
of string. This is the list of pre selected elements, must contain
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values that are also in <span style="font-style: italic;">options</span>.</li>
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<li><span style="font-weight: bold;">size:</span> The size of the
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select field, if set to 1 a dropdown box will be displayed.</li>
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</ul>
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<li><span style="font-weight: bold;">table:</span> Adds a table. Can
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|
be used recursively.</li>
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|
<ul>
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|
<li><span style="font-weight: bold;">value:</span> A <span
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|
style="font-style: italic;">data element</span>. Can be used
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|
recursively.</li>
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|
</ul>
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|
|
<li><span style="font-weight: bold;">text:</span> Inserts a text
|
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|
|
element.</li>
|
|
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|
|
<ul>
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|
<li><span style="font-weight: bold;">text:</span> The text to
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|
display.</li>
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|
</ul>
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</ul>
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<br>
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|
Beneath those values a <span style="font-weight: bold;">"td"</span>
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|
|
value may be added. This has to be an array with one or more of these
|
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|
|
|
options:<br>
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|
|
<br>
|
|
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|
|
<ul>
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|
<li><span style="font-weight: bold;">colspan:</span> Like the HTML
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|
colspan attribute for td elements.</li>
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|
|
<li><span style="font-weight: bold;">rowspan:</span> Like the HTML
|
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|
|
rowspan attribute for td elements.</li>
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|
|
<li><span style="font-weight: bold;">align:</span>
|
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|
|
|
left/center/right/justify Like the HTML align attribute.</li>
|
|
|
|
|
</ul>
|
|
|
|
|
<br>
|
2004-02-18 19:36:10 +00:00
|
|
|
<span style="font-weight: bold;">Example:</span><span
|
|
|
|
|
style="font-family: monospace;"><br>
|
|
|
|
|
<br>
|
|
|
|
|
</span><code>array(<br>
|
|
|
|
|
array(<br>
|
|
|
|
|
array("kind" => "text", "text" => "This is an
|
|
|
|
|
example", "td" => array("colspan" => 3))<br>
|
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|
|
), <br>
|
|
|
|
|
array(<br>
|
|
|
|
|
array("kind" => "text", "text" => "Input:"),<br>
|
|
|
|
|
array("kind" => "input", "name" => "myinput",
|
|
|
|
|
"type" => "text"),<br>
|
|
|
|
|
array("kind" => "help", "value" => "42")<br>
|
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|
|
|
)<br>
|
|
|
|
|
)<br>
|
|
|
|
|
</code><br>
|
2004-02-17 21:08:08 +00:00
|
|
|
<br>
|
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|
|
<br>
|
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|
<br>
|
|
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|
<br>
|
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|
<br>
|
|
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|
|
</body>
|
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</html>
|
