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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
<?php
/**
* Elgg Object
*
* Elgg objects are the most common means of storing information in the database.
* They are a child class of ElggEntity, so receive all the benefits of the Entities,
* but also include a title and description field.
*
* An ElggObject represents a row from the objects_entity table, as well
* as the related row in the entities table as represented by the parent
* ElggEntity object.
*
* @internal Title and description are stored in the objects_entity table.
*
* @package Elgg.Core
* @subpackage DataModel.Object
*
* @property string $title The title, name, or summary of this object
* @property string $description The body, description, or content of the object
* @property array $tags Array of tags that describe the object
*/
class ElggObject extends ElggEntity {
/**
* Initialise the attributes array to include the type,
* title, and description.
*
* @return void
*/
protected function initializeAttributes() {
parent::initializeAttributes();
$this->attributes['type'] = "object";
$this->attributes['title'] = NULL;
$this->attributes['description'] = NULL;
$this->attributes['tables_split'] = 2;
}
/**
* Load or create a new ElggObject.
*
* If no arguments are passed, create a new entity.
*
* If an argument is passed, attempt to load a full ElggObject entity.
* Arguments can be:
* - The GUID of an object entity.
* - A DB result object from the entities table with a guid property
*
* @param mixed $guid If an int, load that GUID. If a db row, then will attempt to
* load the rest of the data.
*
* @throws IOException If passed an incorrect guid
* @throws InvalidParameterException If passed an Elgg* Entity that isn't an ElggObject
*/
function __construct($guid = null) {
$this->initializeAttributes();
// compatibility for 1.7 api.
$this->initialise_attributes(false);
if (!empty($guid)) {
// Is $guid is a DB row from the entity table
if ($guid instanceof stdClass) {
// Load the rest
if (!$this->load($guid)) {
$msg = elgg_echo('IOException:FailedToLoadGUID', array(get_class(), $guid->guid));
throw new IOException($msg);
}
// Is $guid is an ElggObject? Use a copy constructor
} else if ($guid instanceof ElggObject) {
elgg_deprecated_notice('This type of usage of the ElggObject constructor was deprecated. Please use the clone method.', 1.7);
foreach ($guid->attributes as $key => $value) {
$this->attributes[$key] = $value;
}
// Is this is an ElggEntity but not an ElggObject = ERROR!
} else if ($guid instanceof ElggEntity) {
throw new InvalidParameterException(elgg_echo('InvalidParameterException:NonElggObject'));
// Is it a GUID
} else if (is_numeric($guid)) {
if (!$this->load($guid)) {
throw new IOException(elgg_echo('IOException:FailedToLoadGUID', array(get_class(), $guid)));
}
} else {
throw new InvalidParameterException(elgg_echo('InvalidParameterException:UnrecognisedValue'));
}
}
}
/**
* Loads the full ElggObject when given a guid.
*
* @param mixed $guid GUID of an ElggObject or the stdClass object from entities table
*
* @return bool
* @throws InvalidClassException
*/
protected function load($guid) {
// Load data from entity table if needed
if (!parent::load($guid)) {
return false;
}
// Only work with GUID from here
if ($guid instanceof stdClass) {
$guid = $guid->guid;
}
// Check the type
if ($this->attributes['type'] != 'object') {
$msg = elgg_echo('InvalidClassException:NotValidElggStar', array($guid, get_class()));
throw new InvalidClassException($msg);
}
// Load missing data
$row = get_object_entity_as_row($guid);
if (($row) && (!$this->isFullyLoaded())) {
// If $row isn't a cached copy then increment the counter
$this->attributes['tables_loaded']++;
}
// Now put these into the attributes array as core values
$objarray = (array) $row;
foreach ($objarray as $key => $value) {
$this->attributes[$key] = $value;
}
// guid needs to be an int http://trac.elgg.org/ticket/4111
$this->attributes['guid'] = (int)$this->attributes['guid'];
return true;
}
/**
* Saves object-specific attributes.
*
* @internal Object attributes are saved in the objects_entity table.
*
* @return bool
*/
public function save() {
// Save ElggEntity attributes
if (!parent::save()) {
return false;
}
// Save ElggObject-specific attributes
return create_object_entity($this->get('guid'), $this->get('title'),
$this->get('description'), $this->get('container_guid'));
}
/**
* Return sites that this object is a member of
*
* Site membership is determined by relationships and not site_guid.d
*
* @todo This should be moved to ElggEntity
* @todo Unimplemented
*
* @param string $subtype Optionally, the subtype of result we want to limit to
* @param int $limit The number of results to return
* @param int $offset Any indexing offset
*
* @return array|false
*/
function getSites($subtype = "", $limit = 10, $offset = 0) {
return get_site_objects($this->getGUID(), $subtype, $limit, $offset);
}
/**
* Add this object to a site
*
* @param int $site_guid The guid of the site to add it to
*
* @return bool
*/
function addToSite($site_guid) {
return add_site_object($this->getGUID(), $site_guid);
}
/*
* EXPORTABLE INTERFACE
*/
/**
* Return an array of fields which can be exported.
*
* @return array
*/
public function getExportableValues() {
return array_merge(parent::getExportableValues(), array(
'title',
'description',
));
}
/**
* Can a user comment on this object?
*
* @see ElggEntity::canComment()
*
* @param int $user_guid User guid (default is logged in user)
* @return bool
* @since 1.8.0
*/
public function canComment($user_guid = 0) {
$result = parent::canComment($user_guid);
if ($result !== null) {
return $result;
}
if ($user_guid == 0) {
$user_guid = elgg_get_logged_in_user_guid();
}
// must be logged in to comment
if (!$user_guid) {
return false;
}
// must be member of group
if (elgg_instanceof($this->getContainerEntity(), 'group')) {
if (!$this->getContainerEntity()->canWriteToContainer($user_guid)) {
return false;
}
}
// no checks on read access since a user cannot see entities outside his access
return true;
}
}
|
