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MDL-65399 mod_quiz: Remove $slots from the \mod_quiz\structure class

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It's enough to have $slotsinorder, and the $slots property
was redundant. There should only be a single source of truth.
This commit is contained in:
Shamim Rezaie 2019-04-12 19:27:38 +10:00
parent 9e5cda1f6c
commit 2a75ea0ec9
1 changed files with 15 additions and 19 deletions
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34
mod/quiz/classes/structure.php
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@ -47,9 +47,6 @@ class structure {
*/
protected $questions = array();
/** @var \stdClass[] quiz_slots.id => the quiz_slots rows for this quiz, agumented by sectionid. */
protected $slots = array();
/** @var \stdClass[] quiz_slots.slot => the quiz_slots rows for this quiz, agumented by sectionid. */
protected $slotsinorder = array();
@ -314,7 +311,7 @@ class structure {
* @return \stdClass[] the slots in this quiz.
*/
public function get_slots() {
return $this->slots;
return array_column($this->slotsinorder, null, 'id');
}
/**
@ -409,12 +406,16 @@ class structure {
* Get a slot by it's id. Throws an exception if it is missing.
* @param int $slotid the slot id.
* @return \stdClass the requested quiz_slots row.
* @throws \coding_exception
*/
public function get_slot_by_id($slotid) {
if (!array_key_exists($slotid, $this->slots)) {
throw new \coding_exception('The \'slotid\' could not be found.');
foreach ($this->slotsinorder as $slot) {
if ($slot->id == $slotid) {
return $slot;
}
return $this->slots[$slotid];
}
throw new \coding_exception('The \'slotid\' could not be found.');
}
/**
@ -425,14 +426,11 @@ class structure {
* @throws \coding_exception
*/
public function get_slot_by_number($slotnumber) {
foreach ($this->slots as $slot) {
if ($slot->slot == $slotnumber) {
return $slot;
}
}
if (!array_key_exists($slotnumber, $this->slotsinorder)) {
throw new \coding_exception('The \'slotnumber\' could not be found.');
}
return $this->slotsinorder[$slotnumber];
}
/**
* Check whether adding a section heading is possible
@ -617,7 +615,6 @@ class structure {
$slots = $this->populate_missing_questions($slots);
$this->questions = array();
$this->slots = array();
$this->slotsinorder = array();
foreach ($slots as $slotdata) {
$this->questions[$slotdata->questionid] = $slotdata;
@ -631,7 +628,6 @@ class structure {
$slot->maxmark = $slotdata->maxmark;
$slot->requireprevious = $slotdata->requireprevious;
$this->slots[$slot->id] = $slot;
$this->slotsinorder[$slot->slot] = $slot;
}
@ -692,7 +688,7 @@ class structure {
*/
protected function populate_question_numbers() {
$number = 1;
foreach ($this->slots as $slot) {
foreach ($this->slotsinorder as $slot) {
if ($this->questions[$slot->questionid]->length == 0) {
$slot->displayednumber = get_string('infoshort', 'quiz');
} else {
@ -720,7 +716,7 @@ class structure {
$this->check_can_be_edited();
$movingslot = $this->slots[$idmove];
$movingslot = $this->get_slot_by_id($idmove);
if (empty($movingslot)) {
throw new \moodle_exception('Bad slot ID ' . $idmove);
}
@ -730,7 +726,7 @@ class structure {
if (empty($idmoveafter)) {
$moveafterslotnumber = 0;
} else {
$moveafterslotnumber = (int) $this->slots[$idmoveafter]->slot;
$moveafterslotnumber = (int) $this->get_slot_by_id($idmoveafter)->slot;
}
// If the action came in as moving a slot to itself, normalise this to
@ -1066,7 +1062,7 @@ class structure {
* Set up this class with the slot tags for each of the slots.
*/
protected function populate_slot_tags() {
$slotids = array_keys($this->slots);
$slotids = array_column($this->slotsinorder, 'id');
$this->slottags = quiz_retrieve_tags_for_slot_ids($slotids);
}