|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace DNADesign\Elemental\Services; |
|
4
|
|
|
|
|
5
|
|
|
use DNADesign\Elemental\Models\BaseElement; |
|
6
|
|
|
use InvalidArgumentException; |
|
7
|
|
|
use SilverStripe\Core\Convert; |
|
8
|
|
|
use SilverStripe\ORM\DataObject; |
|
9
|
|
|
use SilverStripe\ORM\Queries\SQLUpdate; |
|
10
|
|
|
|
|
11
|
|
|
class ReorderElements |
|
12
|
|
|
{ |
|
13
|
|
|
/** |
|
14
|
|
|
* @var BaseElement $block |
|
15
|
|
|
*/ |
|
16
|
|
|
private $element; |
|
17
|
|
|
|
|
18
|
|
|
public function __construct(BaseElement $element) |
|
19
|
|
|
{ |
|
20
|
|
|
if (!is_subclass_of($element, BaseElement::class)) { |
|
21
|
|
|
throw new InvalidArgumentException(sprintf( |
|
22
|
|
|
'Invalid ' . BaseElement::class . ' passed to ' . __CLASS__ |
|
23
|
|
|
)); |
|
24
|
|
|
} |
|
25
|
|
|
|
|
26
|
|
|
$this->element = $element; |
|
27
|
|
|
} |
|
28
|
|
|
|
|
29
|
|
|
/** |
|
30
|
|
|
* @param |
|
31
|
|
|
*/ |
|
32
|
|
|
public function reorder($elementToBeAfterID = 0) |
|
33
|
|
|
{ |
|
34
|
|
|
$element = $this->element; |
|
35
|
|
|
$parentId = $element->ParentID; |
|
|
|
|
|
|
36
|
|
|
$currentPosition = (int) $element->Sort; |
|
37
|
|
|
$sortAfterPosition = 0; |
|
38
|
|
|
|
|
39
|
|
|
if ($elementToBeAfterID) { |
|
40
|
|
|
/** @var BaseElement $afterBlock */ |
|
41
|
|
|
$afterElement = BaseElement::get()->byID($elementToBeAfterID); |
|
42
|
|
|
|
|
43
|
|
|
if (!$afterElement) { |
|
|
|
|
|
|
44
|
|
|
throw new InvalidArgumentException(sprintf( |
|
45
|
|
|
'%s#%s not found', |
|
46
|
|
|
BaseElement::class, |
|
47
|
|
|
$elementToBeAfterID |
|
48
|
|
|
)); |
|
49
|
|
|
} |
|
50
|
|
|
|
|
51
|
|
|
if ($afterElement->ParentID !== $parentId) { |
|
52
|
|
|
throw new InvalidArgumentException( |
|
53
|
|
|
'Trying to sort element to be placed after an element from a different elemental area' |
|
54
|
|
|
); |
|
55
|
|
|
} |
|
56
|
|
|
|
|
57
|
|
|
$sortAfterPosition = (int) $afterElement->Sort; |
|
58
|
|
|
} |
|
59
|
|
|
|
|
60
|
|
|
// We are updating records with SQL queries to avoid the ORM triggering the creation of new versions |
|
61
|
|
|
// for each element that is affected by this reordering. |
|
62
|
|
|
$tableName = Convert::raw2sql(DataObject::getSchema()->tableName(BaseElement::class)); |
|
63
|
|
|
|
|
64
|
|
|
if ($sortAfterPosition < $currentPosition) { |
|
65
|
|
|
$operator = '+'; |
|
66
|
|
|
$filter = "\"$tableName\".\"Sort\" > $sortAfterPosition AND \"$tableName\".\"Sort\" < $currentPosition"; |
|
67
|
|
|
$newBlockPosition = $sortAfterPosition + 1; |
|
68
|
|
|
} else { |
|
69
|
|
|
$operator = '-'; |
|
70
|
|
|
$filter = "\"$tableName\".\"Sort\" <= $sortAfterPosition AND \"$tableName\".\"Sort\" > $currentPosition"; |
|
71
|
|
|
$newBlockPosition = $sortAfterPosition; |
|
72
|
|
|
} |
|
73
|
|
|
|
|
74
|
|
|
$query = SQLUpdate::create() |
|
75
|
|
|
->setTable("\"$tableName\"") |
|
76
|
|
|
->assignSQL('"Sort"', "\"$tableName\".\"Sort\" $operator 1") |
|
77
|
|
|
->addWhere([$filter, "\"$tableName\".\"ParentID\"" => $parentId]); |
|
78
|
|
|
|
|
79
|
|
|
$query->execute(); |
|
80
|
|
|
|
|
81
|
|
|
// Now use the ORM to write a new version of the record that we are directly reordering |
|
82
|
|
|
$element->Sort = $newBlockPosition; |
|
83
|
|
|
$element->write(); |
|
84
|
|
|
|
|
85
|
|
|
return $element; |
|
86
|
|
|
} |
|
87
|
|
|
} |
|
88
|
|
|
|
dnadesign /
silverstripe-elemental
Loading history...