aboutsummaryrefslogtreecommitdiff
path: root/engine/classes/ElggGroup.php
blob: 8721f931bdc8f5ad06bacdeca624e7c46e3f4067 (plain)
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
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
<?php

/**
 * Class representing a container for other elgg entities.
 *
 * @package    Elgg.Core
 * @subpackage Groups
 */
class ElggGroup extends ElggEntity
	implements Friendable {


	/**
	 * Sets the type to group.
	 *
	 * @return void
	 *
	 * @see ElggEntity::initialise_attributes()
	 */
	protected function initialise_attributes() {
		elgg_deprecated_notice('ElggGroup::initialise_attributes() is deprecated by ::initializeAttributes()', 1.8);
		return $this->initializeAttributes();
	}

	/**
	 * Sets the type to group.
	 *
	 * @return void
	 *
	 * @see ElggEntity::initialise_attributes()
	 */
	protected function initializeAttributes() {
		parent::initializeAttributes();

		$this->attributes['type'] = "group";
		$this->attributes['name'] = "";
		$this->attributes['description'] = "";
		$this->attributes['tables_split'] = 2;
	}

	/**
	 * Construct a new user entity, optionally from a given id value.
	 *
	 * @param mixed $guid If an int, load that GUID.
	 * 	If a db row then will attempt to load the rest of the data.
	 *
	 * @throws Exception if there was a problem creating the user.
	 */
	function __construct($guid = null) {
		$this->initialise_attributes();

		if (!empty($guid)) {
			// Is $guid is a DB row - either a entity row, or a user table row.
			if ($guid instanceof stdClass) {
				// Load the rest
				if (!$this->load($guid->guid)) {
					$msg = sprintf(elgg_echo('IOException:FailedToLoadGUID'), get_class(), $guid->guid);
					throw new IOException($msg);
				}

				// Is $guid is an ElggGroup? Use a copy constructor
			} else if ($guid instanceof ElggGroup) {
				elgg_deprecated_notice('This type of usage of the ElggGroup 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 ElggGroup = ERROR!
			} else if ($guid instanceof ElggEntity) {
				throw new InvalidParameterException(elgg_echo('InvalidParameterException:NonElggGroup'));

				// We assume if we have got this far, $guid is an int
			} else if (is_numeric($guid)) {
				if (!$this->load($guid)) {
					throw new IOException(sprintf(elgg_echo('IOException:FailedToLoadGUID'), get_class(), $guid));
				}
			} else {
				throw new InvalidParameterException(elgg_echo('InvalidParameterException:UnrecognisedValue'));
			}
		}
	}

	/**
	 * Add an ElggObject to this group.
	 *
	 * @param ElggObject $object The object.
	 *
	 * @return bool
	 */
	public function addObjectToGroup(ElggObject $object) {
		return add_object_to_group($this->getGUID(), $object->getGUID());
	}

	/**
	 * Remove an object from the containing group.
	 *
	 * @param int $guid The guid of the object.
	 *
	 * @return bool
	 */
	public function removeObjectFromGroup($guid) {
		return remove_object_from_group($this->getGUID(), $guid);
	}

	/**
	 * Returns an attribute or metadata.
	 *
	 * @see ElggEntity::get()
	 *
	 * @param string $name Name
	 *
	 * @return mixed
	 */
	public function get($name) {
		if ($name == 'username') {
			return 'group:' . $this->getGUID();
		}
		return parent::get($name);
	}

	/**
	 * Start friendable compatibility block:
	 *
	 * 	public function addFriend($friend_guid);
		public function removeFriend($friend_guid);
		public function isFriend();
		public function isFriendsWith($user_guid);
		public function isFriendOf($user_guid);
		public function getFriends($subtype = "", $limit = 10, $offset = 0);
		public function getFriendsOf($subtype = "", $limit = 10, $offset = 0);
		public function getObjects($subtype="", $limit = 10, $offset = 0);
		public function getFriendsObjects($subtype = "", $limit = 10, $offset = 0);
		public function countObjects($subtype = "");
	 */

	/**
	 * For compatibility with Friendable.
	 *
	 * Join a group when you friend ElggGroup.
	 *
	 * @param int $friend_guid The GUID of the user joining the group.
	 *
	 * @return bool
	 */
	public function addFriend($friend_guid) {
		return $this->join(get_entity($friend_guid));
	}

	/**
	 * For compatibility with Friendable
	 *
	 * Leave group when you unfriend ElggGroup.
	 *
	 * @param int $friend_guid The GUID of the user leaving.
	 *
	 * @return bool
	 */
	public function removeFriend($friend_guid) {
		return $this->leave(get_entity($friend_guid));
	}

	/**
	 * For compatibility with Friendable
	 *
	 * Friending a group adds you as a member
	 *
	 * @return bool
	 */
	public function isFriend() {
		return $this->isMember();
	}

	/**
	 * For compatibility with Friendable
	 *
	 * @param int $user_guid The GUID of a user to check.
	 *
	 * @return bool
	 */
	public function isFriendsWith($user_guid) {
		return $this->isMember($user_guid);
	}

	/**
	 * For compatibility with Friendable
	 *
	 * @param int $user_guid The GUID of a user to check.
	 *
	 * @return bool
	 */
	public function isFriendOf($user_guid) {
		return $this->isMember($user_guid);
	}

	/**
	 * For compatibility with Friendable
	 *
	 * @param string $subtype The GUID of a user to check.
	 * @param int    $limit   Limit
	 * @param int    $offset  Offset
	 *
	 * @return bool
	 */
	public function getFriends($subtype = "", $limit = 10, $offset = 0) {
		return get_group_members($this->getGUID(), $limit, $offset);
	}

	/**
	 * For compatibility with Friendable
	 *
	 * @param string $subtype The GUID of a user to check.
	 * @param int    $limit   Limit
	 * @param int    $offset  Offset
	 *
	 * @return bool
	 */
	public function getFriendsOf($subtype = "", $limit = 10, $offset = 0) {
		return get_group_members($this->getGUID(), $limit, $offset);
	}

	/**
	 * Get objects contained in this group.
	 *
	 * @param string $subtype Entity subtype
	 * @param int    $limit   Limit
	 * @param int    $offset  Offset
	 *
	 * @return array|false
	 */
	public function getObjects($subtype = "", $limit = 10, $offset = 0) {
		return get_objects_in_group($this->getGUID(), $subtype, 0, 0, "", $limit, $offset, false);
	}

	/**
	 * For compatibility with Friendable
	 *
	 * @param string $subtype Entity subtype
	 * @param int    $limit   Limit
	 * @param int    $offset  Offset
	 *
	 * @return array|false
	 */
	public function getFriendsObjects($subtype = "", $limit = 10, $offset = 0) {
		return get_objects_in_group($this->getGUID(), $subtype, 0, 0, "", $limit, $offset, false);
	}

	/**
	 * For compatibility with Friendable
	 *
	 * @param string $subtype Subtype of entities
	 *
	 * @return array|false
	 */
	public function countObjects($subtype = "") {
		return get_objects_in_group($this->getGUID(), $subtype, 0, 0, "", 10, 0, true);
	}

	/**
	 * End friendable compatibility block
	 */

	/**
	 * Get a list of group members.
	 *
	 * @param int  $limit  Limit
	 * @param int  $offset Offset
	 * @param bool $count  Count
	 *
	 * @return mixed
	 */
	public function getMembers($limit = 10, $offset = 0, $count = false) {
		return get_group_members($this->getGUID(), $limit, $offset, 0, $count);
	}

	/**
	 * Returns whether the current group is public membership or not.
	 *
	 * @return bool
	 */
	public function isPublicMembership() {
		if ($this->membership == ACCESS_PUBLIC) {
			return true;
		}

		return false;
	}

	/**
	 * Return whether a given user is a member of this group or not.
	 *
	 * @param ElggUser $user The user
	 *
	 * @return bool
	 */
	public function isMember($user = 0) {
		if (!($user instanceof ElggUser)) {
			$user = get_loggedin_user();
		}
		if (!($user instanceof ElggUser)) {
			return false;
		}
		return is_group_member($this->getGUID(), $user->getGUID());
	}

	/**
	 * Join an elgg user to this group.
	 *
	 * @param ElggUser $user User
	 *
	 * @return bool
	 */
	public function join(ElggUser $user) {
		return join_group($this->getGUID(), $user->getGUID());
	}

	/**
	 * Remove a user from the group.
	 *
	 * @param ElggUser $user User
	 *
	 * @return void
	 */
	public function leave(ElggUser $user) {
		return leave_group($this->getGUID(), $user->getGUID());
	}

	/**
	 * Override the load function.
	 * This function will ensure that all data is loaded (were possible), so
	 * if only part of the ElggGroup is loaded, it'll load the rest.
	 *
	 * @param int $guid GUID of an ElggGroup entity
	 *
	 * @return true
	 */
	protected function load($guid) {
		// Test to see if we have the generic stuff
		if (!parent::load($guid)) {
			return false;
		}

		// Check the type
		if ($this->attributes['type'] != 'group') {
			$msg = sprintf(elgg_echo('InvalidClassException:NotValidElggStar'), $guid, get_class());
			throw new InvalidClassException($msg);
		}

		// Load missing data
		$row = get_group_entity_as_row($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;
		}

		return true;
	}

	/**
	 * Override the save function.
	 *
	 * @return bool
	 */
	public function save() {
		// Save generic stuff
		if (!parent::save()) {
			return false;
		}

		// Now save specific stuff
		return create_group_entity($this->get('guid'), $this->get('name'), $this->get('description'));
	}

	// EXPORTABLE INTERFACE ////////////////////////////////////////////////////////////

	/**
	 * Return an array of fields which can be exported.
	 *
	 * @return array
	 */
	public function getExportableValues() {
		return array_merge(parent::getExportableValues(), array(
			'name',
			'description',
		));
	}
}