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82 lines
4.2 KiB
PHP
82 lines
4.2 KiB
PHP
<?php // $Id$
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function choice_upgrade($oldversion) {
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global $CFG;
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// This function does anything necessary to upgrade
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// older versions to match current functionality
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if ($oldversion < 2003010100) {
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execute_sql(" ALTER TABLE `choice` ADD `format` INTEGER DEFAULT '0' NOT NULL AFTER `text` ");
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execute_sql(" ALTER TABLE `choice` ADD `publish` INTEGER DEFAULT '0' NOT NULL AFTER `answer6` ");
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}
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if ($oldversion < 2004010100) {
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table_column("choice", "", "showunanswered", "integer", "4", "unsigned", "0", "", "publish");
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}
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if ($oldversion < 2004021700) {
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modify_database("", "INSERT INTO prefix_log_display VALUES ('choice', 'choose', 'choice', 'name');");
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modify_database("", "INSERT INTO prefix_log_display VALUES ('choice', 'choose again', 'choice', 'name');");
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}
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if ($oldversion < 2004070100) {
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table_column("choice", "", "timeclose", "integer", "10", "unsigned", "0", "", "showunanswered");
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table_column("choice", "", "timeopen", "integer", "10", "unsigned", "0", "", "showunanswered");
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}
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if ($oldversion < 2004070101) {
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table_column("choice", "", "release", "integer", "2", "unsigned", "0", "", "publish");
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table_column("choice", "", "allowupdate", "integer", "2", "unsigned", "0", "", "release");
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}
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if ($oldversion < 2004070102) {
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modify_database("", "UPDATE prefix_choice SET allowupdate = '1' WHERE publish = 0;");
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modify_database("", "UPDATE prefix_choice SET release = '1' WHERE publish > 0;");
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modify_database("", "UPDATE prefix_choice SET publish = publish - 1 WHERE publish > 0;");
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}
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if ($oldversion < 2004111200) { // drop first to avoid conflicts when upgrading from 1.4+
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execute_sql("DROP INDEX {$CFG->prefix}choice_course_idx;",false);
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execute_sql("DROP INDEX {$CFG->prefix}choice_answers_choice_idx;",false);
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execute_sql("DROP INDEX {$CFG->prefix}choice_answers_userid_idx;",false);
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modify_database('','CREATE INDEX prefix_choice_course_idx ON prefix_choice (course);');
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modify_database('','CREATE INDEX prefix_choice_answers_choice_idx ON prefix_choice_answers (choice);');
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modify_database('','CREATE INDEX prefix_choice_answers_userid_idx ON prefix_choice_answers (userid);');
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}
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if ($oldversion < 2005033000){
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execute_sql("ALTER TABLE {$CFG->prefix}choice_answers RENAME TO {$CFG->prefix}choice_responses;");
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execute_sql("CREATE TABLE {$CFG->prefix}choice_answers (id SERIAL PRIMARY KEY, choice integer NOT NULL default '0', answer TEXT, timemodified integer NOT NULL default '0');");
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execute_sql("CREATE INDEX {$CFG->prefix}choice_answers_choice_idx ON {$CFG->prefix}_choice_answers (choice);");
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execute_sql("ALTER TABLE {$CFG->prefix}choice ADD `display` INTEGER DEFAULT '0' NOT NULL AFTER `release` ");
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execute_sql("ALTER TABLE {$CFG->prefix}choice_responses RENAME answer TO answerid");
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//move old answers into new answer table.
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$records = get_records('choice');
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if (!empty($records)) {
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foreach ($records as $thischoice) {
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for ($i = 1; $i < 5; $i++) {
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$instance = new stdClass;
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$instance->choice = $thischoice->id;
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$instance->answerid = $thischoice->{'answer'.$i};
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$instance->timemodified = $thischoice->timemodified;
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$result = insert_record('choice_answers', $instance);
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//now fix all responses to the answers.
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execute_sql("UPDATE {$CFG->prefix}choice_responses SET answerid={$result} WHERE choice={$thischoice->id} AND answerid={$i}");
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}
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}
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}
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//drop old fields
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modify_database('','ALTER TABLE prefix_choice DROP `answer1`;');
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modify_database('','ALTER TABLE prefix_choice DROP `answer2`;');
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modify_database('','ALTER TABLE prefix_choice DROP `answer3`;');
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modify_database('','ALTER TABLE prefix_choice DROP `answer4`;');
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modify_database('','ALTER TABLE prefix_choice DROP `answer5`;');
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modify_database('','ALTER TABLE prefix_choice DROP `answer6`;');
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}
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return true;
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}
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?>
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