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Merge branch 'wip-MDL-63165-master' of https://github.com/Beedell/moodle
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David Monllao committed Aug 28, 2018
2 parents efbbbf3 + d0a6044 commit 4f855de
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Showing 4 changed files with 114 additions and 21 deletions.
24 changes: 24 additions & 0 deletions lib/questionlib.php
View file
Expand Up @@ -1487,6 +1487,30 @@ function question_categorylist($categoryid) {
return $categorylist;
}

/**
* Get all parent categories of a given question category in decending order.
* @param int $categoryid for which you want to find the parents.
* @return array of question category ids of all parents categories.
*/
function question_categorylist_parents(int $categoryid) {
global $DB;
$parent = $DB->get_field('question_categories', 'parent', array('id' => $categoryid));
if (!$parent) {
return [];
}
$categorylist = [$parent];
$currentid = $parent;
while ($currentid) {
$currentid = $DB->get_field('question_categories', 'parent', array('id' => $currentid));
if ($currentid) {
$categorylist[] = $currentid;
}
}
// Present the list in decending order (the top category at the top).
$categorylist = array_reverse($categorylist);
return $categorylist;
}

//===========================
// Import/Export Functions
//===========================
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21 changes: 21 additions & 0 deletions lib/tests/questionlib_test.php
View file
Expand Up @@ -1986,4 +1986,25 @@ public function test_question_has_capability_on_wrong_param_type() {
$this->expectExceptionMessage('$questionorid parameter needs to be an integer or an object.');
question_has_capability_on('one', 'tag');
}

/**
* Test of question_categorylist_parents function.
*/
public function test_question_categorylist_parents() {
$this->resetAfterTest();
$generator = $this->getDataGenerator();
$questiongenerator = $generator->get_plugin_generator('core_question');
$category = $generator->create_category();
$context = context_coursecat::instance($category->id);
// Create a top category.
$cat0 = question_get_top_category($context->id, true);
// Add sub-categories.
$cat1 = $questiongenerator->create_question_category(['parent' => $cat0->id]);
$cat2 = $questiongenerator->create_question_category(['parent' => $cat1->id]);
// Test the 'get parents' function.
$parentcategories = question_categorylist_parents($cat2->id);
$this->assertEquals($cat0->id, $parentcategories[0]);
$this->assertEquals($cat1->id, $parentcategories[1]);
$this->assertCount(2, $parentcategories);
}
}
88 changes: 68 additions & 20 deletions question/format.php
View file
Expand Up @@ -282,11 +282,10 @@ public function importpreprocess() {
/**
* Process the file
* This method should not normally be overidden
* @param object $category
* @return bool success
*/
public function importprocess($category) {
global $USER, $CFG, $DB, $OUTPUT;
public function importprocess() {
global $USER, $DB, $OUTPUT;

// Raise time and memory, as importing can be quite intensive.
core_php_time_limit::raise();
Expand Down Expand Up @@ -543,10 +542,14 @@ protected function create_category_path($catpath) {
} else if ($category = $DB->get_record('question_categories',
array('name' => $catname, 'contextid' => $context->id, 'parent' => $parent))) {
$parent = $category->id;
} else if ($parent == 0) {
$category = question_get_top_category($context->id, true);
$parent = $category->id;
} else {
if ($catname == 'top') {
// Should not happen, but if it does just move on.
// Occurs when there has been some import/export that has created
// multiple nested 'top' categories (due to old bug solved by MDL-63165).
// Not throwing an error here helps clean up old errors (silently).
continue;
}
require_capability('moodle/question:managecategory', $context);
// create the new category
$category = new stdClass();
Expand All @@ -556,9 +559,8 @@ protected function create_category_path($catpath) {
$category->parent = $parent;
$category->sortorder = 999;
$category->stamp = make_unique_id_code();
$id = $DB->insert_record('question_categories', $category);
$category->id = $id;
$parent = $id;
$category->id = $DB->insert_record('question_categories', $category);
$parent = $category->id;
}
}
return $category;
Expand Down Expand Up @@ -800,7 +802,13 @@ protected function presave_process($content) {
* @return string The content of the export.
*/
public function exportprocess($checkcapabilities = true) {
global $CFG, $OUTPUT, $DB, $USER;
global $CFG, $DB;

// Get the parents (from database) for this category.
$parents = [];
if ($this->category) {
$parents = question_categorylist_parents($this->category->id);
}

// get the questions (from database) in this category
// only get q's with no parents (no cloze subquestions specifically)
Expand All @@ -821,7 +829,17 @@ public function exportprocess($checkcapabilities = true) {
// file if selected. 0 means that it will get printed before the 1st question
$trackcategory = 0;

// iterate through questions
// Array of categories written to file.
$writtencategories = [];

foreach ($parents as $parent) {
$categoryname = $this->get_category_path($parent, $this->contexttofile);
// Create 'dummy' question for category export.
$dummyquestion = $this->create_dummy_question_representing_category($categoryname);
$expout .= $this->writequestion($dummyquestion) . "\n";
$writtencategories[] = $parent;
}

foreach ($questions as $question) {
// used by file api
$contextid = $DB->get_field('question_categories', 'contextid',
Expand All @@ -840,19 +858,33 @@ public function exportprocess($checkcapabilities = true) {

// check if we need to record category change
if ($this->cattofile) {
$addnewcat = false;
if ($question->category != $trackcategory) {
$addnewcat = true;
$trackcategory = $question->category;
$categoryname = $this->get_category_path($trackcategory, $this->contexttofile);

// create 'dummy' question for category export
$dummyquestion = new stdClass();
$dummyquestion->qtype = 'category';
$dummyquestion->category = $categoryname;
$dummyquestion->name = 'Switch category to ' . $categoryname;
$dummyquestion->id = 0;
$dummyquestion->questiontextformat = '';
$dummyquestion->contextid = 0;
}
$trackcategoryparents = question_categorylist_parents($trackcategory);
// Check if we need to record empty parents categories.
foreach ($trackcategoryparents as $trackcategoryparent) {
// If parent wasn't written.
if (!in_array($trackcategoryparent, $writtencategories)) {
// If parent is empty.
if (!count($DB->get_records('question', array('category' => $trackcategoryparent)))) {
$categoryname = $this->get_category_path($trackcategoryparent, $this->contexttofile);
// Create 'dummy' question for parent category.
$dummyquestion = $this->create_dummy_question_representing_category($categoryname);
$expout .= $this->writequestion($dummyquestion) . "\n";
$writtencategories[] = $trackcategoryparent;
}
}
}
if ($addnewcat && !in_array($trackcategory, $writtencategories)) {
$categoryname = $this->get_category_path($trackcategory, $this->contexttofile);
// Create 'dummy' question for category.
$dummyquestion = $this->create_dummy_question_representing_category($categoryname);
$expout .= $this->writequestion($dummyquestion) . "\n";
$writtencategories[] = $trackcategory;
}
}

Expand All @@ -878,6 +910,22 @@ public function exportprocess($checkcapabilities = true) {
return $expout;
}

/**
* Create 'dummy' question for category export.
* @param string $categoryname the name of the category
* @return stdClass 'dummy' question for category
*/
protected function create_dummy_question_representing_category(string $categoryname) {
$dummyquestion = new stdClass();
$dummyquestion->qtype = 'category';
$dummyquestion->category = $categoryname;
$dummyquestion->id = 0;
$dummyquestion->questiontextformat = '';
$dummyquestion->contextid = 0;
$dummyquestion->name = 'Switch category to ' . $categoryname;
return $dummyquestion;
}

/**
* get the category as a path (e.g., tom/dick/harry)
* @param int id the id of the most nested catgory
Expand Down
2 changes: 1 addition & 1 deletion question/import.php
View file
Expand Up @@ -120,7 +120,7 @@
}

// Process the uploaded file
if (!$qformat->importprocess($category)) {
if (!$qformat->importprocess()) {
print_error('cannotimport', '', $thispageurl->out());
}

Expand Down

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