Paginator.php
4.02 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
<?php
namespace Illuminate\Pagination;
use Countable;
use ArrayAccess;
use JsonSerializable;
use IteratorAggregate;
use Illuminate\Support\Collection;
use Illuminate\Contracts\Support\Jsonable;
use Illuminate\Contracts\Support\Arrayable;
use Illuminate\Contracts\Pagination\Presenter;
use Illuminate\Contracts\Pagination\Paginator as PaginatorContract;
class Paginator extends AbstractPaginator implements Arrayable, ArrayAccess, Countable, IteratorAggregate, JsonSerializable, Jsonable, PaginatorContract
{
/**
* Determine if there are more items in the data source.
*
* @return bool
*/
protected $hasMore;
/**
* Create a new paginator instance.
*
* @param mixed $items
* @param int $perPage
* @param int|null $currentPage
* @param array $options (path, query, fragment, pageName)
* @return void
*/
public function __construct($items, $perPage, $currentPage = null, array $options = [])
{
foreach ($options as $key => $value) {
$this->{$key} = $value;
}
$this->perPage = $perPage;
$this->currentPage = $this->setCurrentPage($currentPage);
$this->path = $this->path != '/' ? rtrim($this->path, '/') : $this->path;
$this->items = $items instanceof Collection ? $items : Collection::make($items);
$this->checkForMorePages();
}
/**
* Get the current page for the request.
*
* @param int $currentPage
* @return int
*/
protected function setCurrentPage($currentPage)
{
$currentPage = $currentPage ?: static::resolveCurrentPage();
return $this->isValidPageNumber($currentPage) ? (int) $currentPage : 1;
}
/**
* Check for more pages. The last item will be sliced off.
*
* @return void
*/
protected function checkForMorePages()
{
$this->hasMore = count($this->items) > ($this->perPage);
$this->items = $this->items->slice(0, $this->perPage);
}
/**
* Get the URL for the next page.
*
* @return string|null
*/
public function nextPageUrl()
{
if ($this->hasMorePages()) {
return $this->url($this->currentPage() + 1);
}
}
/**
* Determine if there are more items in the data source.
*
* @return bool
*/
public function hasMorePages()
{
return $this->hasMore;
}
/**
* Render the paginator using the given presenter.
*
* @param \Illuminate\Contracts\Pagination\Presenter|null $presenter
* @return string
*/
public function links(Presenter $presenter = null)
{
return $this->render($presenter);
}
/**
* Render the paginator using the given presenter.
*
* @param \Illuminate\Contracts\Pagination\Presenter|null $presenter
* @return string
*/
public function render(Presenter $presenter = null)
{
if (is_null($presenter) && static::$presenterResolver) {
$presenter = call_user_func(static::$presenterResolver, $this);
}
$presenter = $presenter ?: new SimpleBootstrapThreePresenter($this);
return $presenter->render();
}
/**
* Get the instance as an array.
*
* @return array
*/
public function toArray()
{
return [
'per_page' => $this->perPage(), 'current_page' => $this->currentPage(),
'next_page_url' => $this->nextPageUrl(), 'prev_page_url' => $this->previousPageUrl(),
'from' => $this->firstItem(), 'to' => $this->lastItem(),
'data' => $this->items->toArray(),
];
}
/**
* Convert the object into something JSON serializable.
*
* @return array
*/
public function jsonSerialize()
{
return $this->toArray();
}
/**
* Convert the object to its JSON representation.
*
* @param int $options
* @return string
*/
public function toJson($options = 0)
{
return json_encode($this->jsonSerialize(), $options);
}
}