MDL-61380 Quiz: quiz_slots schema change

Adding questioncategoryid and includingsubcategories to the quiz_slots table

mod/quiz/db/install.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" ?>
-<XMLDB PATH="mod/quiz/db" VERSION="20150323" COMMENT="XMLDB file for Moodle mod/quiz"
+<XMLDB PATH="mod/quiz/db" VERSION="20180207" COMMENT="XMLDB file for Moodle mod/quiz"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:noNamespaceSchemaLocation="../../../lib/xmldb/xmldb.xsd"
 >
@@ -63,12 +63,16 @@
         <FIELD NAME="page" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false" COMMENT="The page number that this questions appears on. If the question in slot n appears on page p, then the question in slot n+1 must appear on page p or p+1. Well, except that when a quiz is being created, there may be empty pages, which would cause the page number to jump here."/>
         <FIELD NAME="requireprevious" TYPE="int" LENGTH="4" NOTNULL="true" DEFAULT="0" SEQUENCE="false" COMMENT="Set to 1 when current question requires previous one to be answered first."/>
         <FIELD NAME="questionid" TYPE="int" LENGTH="10" NOTNULL="true" DEFAULT="0" SEQUENCE="false" COMMENT="Foreign key references question.id."/>
+        <FIELD NAME="questioncategoryid" TYPE="int" LENGTH="10" NOTNULL="false" SEQUENCE="false" COMMENT="The question category that the random question will be picked from. Will be null if and only if the question is not a random question."/>
+        <FIELD NAME="includingsubcategories" TYPE="int" LENGTH="4" NOTNULL="false" SEQUENCE="false" COMMENT="Whether the random question can be picked from sub categories or not. Will be null if questioncategoryid is null."/>
+        <FIELD NAME="tags" TYPE="text" NOTNULL="false" SEQUENCE="false" COMMENT="Contains data about the tags that a question must have so that it can be selected for this slot. This field is an array in the form of [tagid,tagname] which is stored as JSON. Will be null if questioncategoryid is null."/>
         <FIELD NAME="maxmark" TYPE="number" LENGTH="12" NOTNULL="true" DEFAULT="0" SEQUENCE="false" DECIMALS="7" COMMENT="How many marks this question contributes to quiz.sumgrades."/>
       </FIELDS>
       <KEYS>
         <KEY NAME="primary" TYPE="primary" FIELDS="id"/>
         <KEY NAME="quizid" TYPE="foreign" FIELDS="quizid" REFTABLE="quiz" REFFIELDS="id"/>
         <KEY NAME="questionid" TYPE="foreign" FIELDS="questionid" REFTABLE="question" REFFIELDS="id"/>
+        <KEY NAME="questioncategoryid" TYPE="foreign" FIELDS="questioncategoryid" REFTABLE="questioncategory" REFFIELDS="id"/>
       </KEYS>
       <INDEXES>
         <INDEX NAME="quizid-slot" UNIQUE="true" FIELDS="quizid, slot"/>

mod/quiz/db/upgrade.php

@@ -94,5 +94,39 @@ function xmldb_quiz_upgrade($oldversion) {
     // Automatically generated Moodle v3.4.0 release upgrade line.
     // Put any upgrade step following this.
 
+    if ($oldversion < 2018020700) {
+
+        $table = new xmldb_table('quiz_slots');
+
+        // Define field questioncategoryid to be added to quiz_slots.
+        $field = new xmldb_field('questioncategoryid', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'questionid');
+        // Conditionally launch add field questioncategoryid.
+        if (!$dbman->field_exists($table, $field)) {
+            $dbman->add_field($table, $field);
+        }
+
+        // Define key questioncategoryid (foreign) to be added to quiz_slots.
+        $key = new xmldb_key('questioncategoryid', XMLDB_KEY_FOREIGN, array('questioncategoryid'), 'questioncategory', array('id'));
+        // Launch add key questioncategoryid.
+        $dbman->add_key($table, $key);
+
+        // Define field includingsubcategories to be added to quiz_slots.
+        $field = new xmldb_field('includingsubcategories', XMLDB_TYPE_INTEGER, '4', null, null, null, null, 'questioncategoryid');
+        // Conditionally launch add field includingsubcategories.
+        if (!$dbman->field_exists($table, $field)) {
+            $dbman->add_field($table, $field);
+        }
+
+        // Define field tags to be added to quiz_slots.
+        $field = new xmldb_field('tags', XMLDB_TYPE_TEXT, null, null, null, null, null, 'includingsubcategories');
+        // Conditionally launch add field tags.
+        if (!$dbman->field_exists($table, $field)) {
+            $dbman->add_field($table, $field);
+        }
+
+        // Quiz savepoint reached.
+        upgrade_mod_savepoint(true, 2018020700, 'quiz');
+    }
+
     return true;
 }

mod/quiz/version.php

@@ -24,7 +24,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$plugin->version   = 2017111300;
+$plugin->version   = 2018020700;
 $plugin->requires  = 2017110800;
 $plugin->component = 'mod_quiz';
 $plugin->cron      = 60;