Development:Migrating to 2.0 checklist

These are things that OU developers have found so far to check/do in code we're migrating from Moodle 1.9 to 2.0. All information on the detail of this checklist can be found elsewhere in Moodle Docs, and particularly from the Development:Migrating_contrib_code_to_2.0

Not all these things are essential for a rush job, but if you did all of them, then that'd be great. We should really mark each one with a priority of some sort!

Please add/edit this list!

Database

• Leave empty db/update.php file
• New $DB global objects with functions replace old db functions
• $DB parameters swapped to ?
• Add and strip slashes no longer required
• Remove use of ENUM and ENUMVALUES in install.xml file
• check use of sql_substr()
• Get_records() etc now always returning arrays, empty array in case of no records found.
• Db functions throw errors not return false on error
• DB functions offer strictness parameters e.g MUST_EXIST
• Update version.php numbers (esp required)

Page display

• New $OUTPUT header and footer functions
• Navigation links need to use $PAGE->navbar
• Make sure that you instantiate the moodle form before any call to $OUTPUT->header()
• Create a renderer
• Change the way image urls are displayed (not $CFG->pixpath any more)
• CSS changes
  • Change styles.php to styles.css
  • Change page id to new structure e.g. course-format-studyplan to page-course-view-studyplan

Roles and Permissions:

• array name to $capabilities in access.php
• Remove references to admin in access.php
• Rename legacy to archetypes in access.php
• Add manager archetype in access.php
• Ensure require_login as well as require_capability checks
• isguest() is depreicated, use !isloggedin() || isguestuser() instead

Language strings

• Rename language folder
• Change $a to {$a} in language files
• Change popup help files to _help lang strings and shorten
• Add $string[‘pluginname’] to lang file
• Add $string[‘pluginadministration’] to lang file

Forms

• Param_clean parameter type removed
• type required parameter for optional_and required_param
• Replace file form elements with new filepicker
• Replace htmleditor with editor form field type
• Change setHelpButton to addHelpButton. (You need to change the arguments, but the new ones are simpler.)

General

• Swap config_ files to edit and settings php files
• Fix whitespace & coding style
• rs_fetch_next_record($rs) is deprecated, in favour of the simple foreach($rs as $var). Calls to rs_close() must be replaced by $rs->close();
• Check functions deprecated list: https://docs.moodle.org/en/Development:Deprecated_functions_in_2.0
• Use print_error() or throw new moodle_exception not error()
• Replace all url strings e.g. in redirect() calls with moodle_url instances
• Move install/uninstall functions from lib to db/install.php, lib/uninstall.php
• Move images into pix folder (especially icon.gif), get path by calling $OUTPUT->pix_url('icon', 'local_whatever');
• Update the code template at the top of each file (see Code template guidelines for details
• Add 'supports' function in lib (modname_supports()) for modules (and blocks?).