mlantahler:Bugfix: Added checks in DataObjectSet::First() and DataObjectSet::Last() to prevent errors on an empty $items array. (merged from branches/gsoc)
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@41778 467b73ca-7a2a-4603-9d3b-597d59a354a9
This commit is contained in:
Ingo Schommer
parent
898d897c9e
commit
d47e6cf67c
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@ -75,7 +75,7 @@ class DataObjectSet extends ViewableData implements Iterator {
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}
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parent::__construct();
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}
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/**
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* Consolidate the DataObjectSet into an array of arrays
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* The array will contain the field values of the specified fields
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@ -91,7 +91,7 @@ class DataObjectSet extends ViewableData implements Iterator {
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}
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$output[] = $outputRow;
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}
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return $output;
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return $output;
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}
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/**
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@ -102,7 +102,7 @@ class DataObjectSet extends ViewableData implements Iterator {
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public function consolidateString() {
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$fieldList = func_get_args();
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$data = $this->consolidate($fieldList);
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$result = "<p>array (<br >";
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foreach($data as $record) {
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$result .= " array( ";
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@ -140,7 +140,7 @@ class DataObjectSet extends ViewableData implements Iterator {
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return $map;
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}
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/**
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* Convert this DataObjectSet to an array of maps.
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* @param string $index Index the array by this field.
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@ -159,7 +159,7 @@ class DataObjectSet extends ViewableData implements Iterator {
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return $map;
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}
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/**
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* Returns an array of ID => $titleField
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* @param string $index The field you wish to use as a key for the array
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@ -197,7 +197,7 @@ class DataObjectSet extends ViewableData implements Iterator {
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$this->pageLength = $pageLength;
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$this->totalSize = $totalSize;
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}
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/**
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* Use the limit from the given query to add prev/next buttons to this DataObjectSet.
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* @param SQLQuery $query The query used to generate this DataObjectSet
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@ -242,7 +242,7 @@ class DataObjectSet extends ViewableData implements Iterator {
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return ceil($this->totalSize / $this->pageLength);
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}
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/**
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* Return a datafeed of page-links, good for use in search results, etc.
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* $maxPages will put an upper limit on the number of pages to return. It will
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@ -252,11 +252,11 @@ class DataObjectSet extends ViewableData implements Iterator {
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*/
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public function Pages($maxPages = 0){
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$ret = new DataObjectSet();
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if($maxPages) {
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$startPage = ($this->CurrentPage() - floor($maxPages / 2)) - 1;
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$endPage = $this->CurrentPage() + floor($maxPages / 2);
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if($startPage < 0) {
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$startPage = 0;
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$endPage = $maxPages;
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@ -265,7 +265,7 @@ class DataObjectSet extends ViewableData implements Iterator {
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$endPage = $this->TotalPages();
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$startPage = max(0, $endPage - $maxPages);
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}
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} else {
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$startPage = 0;
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$endPage = $this->TotalPages();
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@ -328,17 +328,17 @@ class DataObjectSet extends ViewableData implements Iterator {
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return HTTP::setGetVar($this->paginationGetVar, $this->pageStart + $this->pageLength);
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}
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}
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/**
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* Allows us to use multiple pagination GET variables on the same page (eg. if you have search results and page comments on a single page)
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*
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*
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* Example: @see PageCommentInterface::Comments()
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* @param string $var The variable to go in the GET string (Defaults to 'start')
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*/
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public function setPaginationGetVar($var) {
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$this->paginationGetVar = $var;
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}
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/**
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* Add an item to the DataObject Set.
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* @param DataObject $item Item to add.
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@ -375,7 +375,7 @@ class DataObjectSet extends ViewableData implements Iterator {
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*/
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public function append(DataObjectSet $doset){
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foreach($doset as $item){
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$this->push($item);
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$this->push($item);
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}
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}
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@ -467,12 +467,12 @@ class DataObjectSet extends ViewableData implements Iterator {
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public function getOffset($offset) {
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$keys = array_keys($this->items);
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foreach($keys as $i => $key) {
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if($key == key($this->items)) break;
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if($key == key($this->items)) break;
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}
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$requiredKey = $keys[$i + $offset];
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return $this->items [$requiredKey];
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}
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/**
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* Gets a specific slice of an existing set.
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*
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@ -526,6 +526,9 @@ class DataObjectSet extends ViewableData implements Iterator {
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* @return DataObject
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*/
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public function First() {
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if(count($this->items) < 1)
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return null;
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$keys = array_keys($this->items);
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return sizeof($keys) > 0 ? $this->items[$keys[0]] : null;
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}
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@ -535,6 +538,9 @@ class DataObjectSet extends ViewableData implements Iterator {
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* @return DataObject
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*/
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public function Last() {
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if(count($this->items) < 1)
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return null;
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$keys = array_keys($this->items);
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return $this->items[$keys[sizeof($keys)-1]];
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}
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@ -566,7 +572,7 @@ class DataObjectSet extends ViewableData implements Iterator {
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$result .= "<li onclick=\"location.href = this.getElementsByTagName('a')[0].href\"><a href=\"$item->Link\">$item->Title</a></li>\n";
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}
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$result .= "</ul>\n";
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return $result;
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}
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}
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@ -578,8 +584,8 @@ class DataObjectSet extends ViewableData implements Iterator {
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public function forTemplate() {
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return $this->UL();
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}
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/**
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/**
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* Returns the dataset as an array of ID => "FirstName Surname"
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* @param string $key Field name to index the array.
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* @param array $values An array of fieldnames to insert in array
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@ -599,12 +605,12 @@ class DataObjectSet extends ViewableData implements Iterator {
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$map[$item->$key] = implode(" ", $mapValues);
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}
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}
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return $map;
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return $map;
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}
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/**
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/**
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* Returns the dataset as an array of ID => Title.
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*
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*
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* TODO Duplication from toDropdownMap()
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*
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* @param string $key The field you wish to use as a key for the array
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@ -613,14 +619,14 @@ class DataObjectSet extends ViewableData implements Iterator {
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* @return array
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*/
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public function map($key = "ID", $value = "Title", $includeBlank=null) {
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/* Don't do this, add this locally.
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* Reasons: 1: In some case this blank value don't/mustn't present.
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2: In some case, this balnk value should be customised, such as (Select from below)
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3: In some case, the key need to be explicitly "0", cos "" and "0" need to be treated differently
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*/
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//$map[''] = "(Select)";
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/* Instead do this as an option */
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if($includeBlank) $map[''] = $includeBlank;
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@ -634,7 +640,7 @@ class DataObjectSet extends ViewableData implements Iterator {
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$map[$item->$key] = $item->$value;
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}
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}
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return $map;
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return $map;
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}
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/**
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@ -660,7 +666,7 @@ class DataObjectSet extends ViewableData implements Iterator {
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}
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return $list;
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}
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/**
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* Returns an array of DataObjectSets. The array is keyed by index.
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* @param string $index The field name to index the array by.
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@ -675,7 +681,7 @@ class DataObjectSet extends ViewableData implements Iterator {
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}
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return $result;
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}
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/**
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* Groups the items by a given field.
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* Returns a DataObjectSet suitable for use in a nested template.
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@ -693,13 +699,13 @@ class DataObjectSet extends ViewableData implements Iterator {
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}
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return $groupedAsSet;
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}
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/**
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* Returns a nested unordered list out of a "chain" of DataObject-relations,
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* using the automagic ComponentSet-relation-methods to find subsequent DataObjectSets.
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* The formatting of the list can be different for each level, and is evaluated as an SS-template
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* with access to the current DataObjects attributes and methods.
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*
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*
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* Example: Groups (Level 0, the "calling" DataObjectSet, needs to be queried externally)
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* and their Members (Level 1, determined by the Group->Members()-relation).
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*
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@ -713,11 +719,11 @@ class DataObjectSet extends ViewableData implements Iterator {
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* Format:
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* array(
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* array(
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* "dataclass" => "Root",
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* "dataclass" => "Root",
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* "template" => "<li class=\"\$EvenOdd\"><a href=\"admin/crm/show/\$ID\">\$AccountName</a>"
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* ),
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* array(
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* "dataclass" => "GrantObjects",
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* "dataclass" => "GrantObjects",
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* "template" => "<li class=\"\$EvenOdd\"><a href=\"admin/crm/showgrant/\$ID\">#\$GrantNumber: \$TotalAmount.Nice, \$ApplicationDate.ShortMonth \$ApplicationDate.Year</a>"
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* )
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* );
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@ -728,7 +734,7 @@ class DataObjectSet extends ViewableData implements Iterator {
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public function buildNestedUL($nestingLevels, $ulExtraAttributes = "") {
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return $this->getChildrenAsUL($nestingLevels, 0, "", $ulExtraAttributes);
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}
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/**
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* Gets called recursively on the child-objects of the chain.
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*
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@ -743,13 +749,13 @@ class DataObjectSet extends ViewableData implements Iterator {
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$hasNextLevel = false;
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$ulExtraAttributes = " $ulExtraAttributes";
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$output = "<ul" . eval($ulExtraAttributes) . ">\n";
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$currentNestingLevel = $nestingLevels[$level];
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// either current or default template
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$currentTemplate = (!empty($currentNestingLevel)) ? $currentNestingLevel['template'] : $template;
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$myViewer = SSViewer::fromString($currentTemplate);
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$childrenMethod = $nestingLevels[$level+1]['dataclass'];
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// sql-parts
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@ -760,30 +766,30 @@ class DataObjectSet extends ViewableData implements Iterator {
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$having = ($nestingLevels[$level+1]['having']) ? $nestingLevels[$level+1]['having'] : null;
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foreach($this as $parent) {
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$evenOdd = ($itemCount % 2 == 0) ? "even" : "odd";
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$evenOdd = ($itemCount % 2 == 0) ? "even" : "odd";
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$parent->setField('EvenOdd', $evenOdd);
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$template = $myViewer->process($parent);
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// if no output is selected, fall back to the id to keep the item "clickable"
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$output .= $template . "\n";
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$output .= $template . "\n";
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if($childrenMethod) {
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// workaround for missing groupby/having-parameters in instance_get
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// get the dataobjects for the next level
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$children = $parent->$childrenMethod($filter, $sort, $join, $limit, $having);
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if($children) {
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$output .= $children->getChildrenAsUL($nestingLevels, $level+1, $currentTemplate, $ulExtraAttributes);
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$output .= $children->getChildrenAsUL($nestingLevels, $level+1, $currentTemplate, $ulExtraAttributes);
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}
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}
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$output .= "</li>\n";
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$itemCount++;
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}
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$output .= "</ul>\n";
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return $output;
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}
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/**
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* Returns a new DataObjectSet of the sorted array
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* @param string $fieldname the name of the field on the dataobject that you wish to sort the set by
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@ -794,7 +800,7 @@ class DataObjectSet extends ViewableData implements Iterator {
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column_sort($this->items, $fieldname, $direction, false);
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}
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}
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/**
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* Remove duplicates from this set based on the dataobjects ID.
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* Assumes all items contained in the set all have IDs.
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@ -821,7 +827,7 @@ class DataObjectSet extends ViewableData implements Iterator {
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$val .= "</ul>";
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return $val;
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}
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/**
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* Groups the set by $groupField and returns the parent of each group whose class
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* is $groupClassName. If $collapse is true, the group will be collapsed up until an ancestor with the
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@ -839,28 +845,28 @@ class DataObjectSet extends ViewableData implements Iterator {
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// indexed by it's parent. The parent IDs are later used to find the parents
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// that make up the returned set.
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$groupedSet = array();
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// Array to store the subgroups matching the requirements
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$resultsArray = array();
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// Put this item into the array indexed by $groupField.
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// the keys are later used to retrieve the top-level records
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foreach( $this->items as $item ) {
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$groupedSet[$item->$groupField][] = $item;
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}
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$parentSet = null;
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// retrieve parents for this set
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// TODO How will we collapse the hierarchy to bridge the gap?
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// if collapse is specified, then find the most direct ancestor of type
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// $groupClassName
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if($collapse) {
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// The most direct ancestors with the type $groupClassName
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$parentSet = array();
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// get direct parents
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$parents = DataObject::get( 'SiteTree', "`SiteTree`.`$parentField` IN( " . implode( ",", array_keys( $groupedSet ) ) . ")", $sortParents );
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@ -869,21 +875,21 @@ class DataObjectSet extends ViewableData implements Iterator {
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// store the old parent ID. This is required to change the grouped items
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// in the $groupSet array
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$oldParentID = $parent->ID;
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// get the parental stack
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$parentObjects= $parent->parentStack();
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$parentStack = array();
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foreach( $parentObjects as $parentObj )
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$parentStack[] = $parentObj->ID;
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// is some particular IDs are required, then get the intersection
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if($requiredParents && count($requiredParents)) {
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$parentStack = array_intersect($requiredParents, $parentStack);
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}
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$newParent = null;
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// If there are no parents, the group can be omitted
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if(empty($parentStack)) {
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$newParent = new DataObjectSet();
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@ -896,13 +902,13 @@ class DataObjectSet extends ViewableData implements Iterator {
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foreach( $groupedSet[$oldParentID] as $descendant ) {
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$groupedSet[$newParent->ID][] = $descendant;
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}
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// Add the most direct ancestor of type $groupClassName
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$parentSet[] = $newParent;
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}
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}
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// otherwise get the parents of these items
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} else {
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$requiredIDs = array_keys( $groupedSet );
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if( $requiredParents && cont($requiredParents)) {
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