|
1
|
|
|
<?php |
|
2
|
|
|
namespace TYPO3Fluid\Fluid\ViewHelpers; |
|
3
|
|
|
|
|
4
|
|
|
/* |
|
5
|
|
|
* This file belongs to the package "TYPO3 Fluid". |
|
6
|
|
|
* See LICENSE.txt that was shipped with this package. |
|
7
|
|
|
*/ |
|
8
|
|
|
|
|
9
|
|
|
use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface; |
|
10
|
|
|
use TYPO3Fluid\Fluid\Core\ViewHelper; |
|
11
|
|
|
use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper; |
|
12
|
|
|
use TYPO3Fluid\Fluid\Core\ViewHelper\Traits\CompileWithContentArgumentAndRenderStatic; |
|
13
|
|
|
|
|
14
|
|
|
/** |
|
15
|
|
|
* This ViewHelper counts elements of the specified array or countable object. |
|
16
|
|
|
* |
|
17
|
|
|
* = Examples = |
|
18
|
|
|
* |
|
19
|
|
|
* <code title="Count array elements"> |
|
20
|
|
|
* <f:count subject="{0:1, 1:2, 2:3, 3:4}" /> |
|
21
|
|
|
* </code> |
|
22
|
|
|
* <output> |
|
23
|
|
|
* 4 |
|
24
|
|
|
* </output> |
|
25
|
|
|
* |
|
26
|
|
|
* <code title="inline notation"> |
|
27
|
|
|
* {objects -> f:count()} |
|
28
|
|
|
* </code> |
|
29
|
|
|
* <output> |
|
30
|
|
|
* 10 (depending on the number of items in {objects}) |
|
31
|
|
|
* </output> |
|
32
|
|
|
* |
|
33
|
|
|
* @api |
|
34
|
|
|
*/ |
|
35
|
|
|
class CountViewHelper extends AbstractViewHelper |
|
36
|
|
|
{ |
|
37
|
|
|
use CompileWithContentArgumentAndRenderStatic; |
|
38
|
|
|
|
|
39
|
|
|
/** |
|
40
|
|
|
* @var boolean |
|
41
|
|
|
*/ |
|
42
|
|
|
protected $escapeChildren = false; |
|
43
|
|
|
|
|
44
|
|
|
/** |
|
45
|
|
|
* @var boolean |
|
46
|
|
|
*/ |
|
47
|
|
|
protected $escapeOutput = false; |
|
48
|
|
|
|
|
49
|
|
|
/** |
|
50
|
|
|
* @return void |
|
51
|
|
|
*/ |
|
52
|
|
|
public function initializeArguments() |
|
53
|
|
|
{ |
|
54
|
|
|
parent::initializeArguments(); |
|
55
|
|
|
$this->registerArgument('subject', 'array', 'Countable subject, array or \Countable'); |
|
56
|
|
|
} |
|
57
|
|
|
|
|
58
|
|
|
/** |
|
59
|
|
|
* @param array $arguments |
|
60
|
|
|
* @param \Closure $renderChildrenClosure |
|
61
|
|
|
* @param RenderingContextInterface $renderingContext |
|
62
|
|
|
* @return integer |
|
63
|
|
|
*/ |
|
64
|
|
|
public static function renderStatic(array $arguments, \Closure $renderChildrenClosure, RenderingContextInterface $renderingContext) |
|
65
|
|
|
{ |
|
66
|
|
|
$countable = $renderChildrenClosure(); |
|
67
|
|
|
if ($countable === null) { |
|
68
|
|
|
return 0; |
|
69
|
|
|
} elseif (!$countable instanceof \Countable && !is_array($countable)) { |
|
70
|
|
|
throw new ViewHelper\Exception( |
|
71
|
|
|
sprintf( |
|
72
|
|
|
'Subject given to f:count() is not countable (type: %s)', |
|
73
|
|
|
is_object($countable) ? get_class($countable) : gettype($countable) |
|
74
|
|
|
) |
|
75
|
|
|
); |
|
76
|
|
|
} |
|
77
|
|
|
return count($countable); |
|
78
|
|
|
} |
|
79
|
|
|
} |
|
80
|
|
|
|
TYPO3 /
Fluid
