advanced-custom-fields / core / fields / select.php

select.php in Advanced Custom Fields (ACF®) 3.1.4, at core/fields/select.php

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1	<?php
2
3	class acf_Select extends acf_Field
4	{
5
6	/*--------------------------------------------------------------------------------------
7	*
8	* Constructor
9	*
10	* @author Elliot Condon
11	* @since 1.0.0
12	* @updated 2.2.0
13	*
14	-------------------------------------------------------------------------------------/
15
16	function __construct($parent)
17	{
18	parent::__construct($parent);
19
20	$this->name = 'select';
21	$this->title = __("Select",'acf');
22
23	}
24
25
26
27	/*--------------------------------------------------------------------------------------
28	*
29	* create_field
30	*
31	* @author Elliot Condon
32	* @since 2.0.5
33	* @updated 2.2.0
34	*
35	-------------------------------------------------------------------------------------/
36
37	function create_field($field)
38	{
39	// defaults
40	$field['value'] = isset($field['value']) ? $field['value'] : array();
41	$field['multiple'] = isset($field['multiple']) ? $field['multiple'] : false;
42	$field['allow_null'] = isset($field['allow_null']) ? $field['allow_null'] : false;
43	$field['choices'] = isset($field['choices']) ? $field['choices'] : array();
44	$field['optgroup'] = isset($field['optgroup']) ? $field['optgroup'] : false;
45
46
47	// no choices
48	if(empty($field['choices']))
49	{
50	echo '<p>' . __("No choices to choose from",'acf') . '</p>';
51	return false;
52	}
53
54	// multiple select
55	$multiple = '';
56	if($field['multiple'] == '1')
57	{
58	$multiple = ' multiple="multiple" size="5" ';
59	$field['name'] .= '[]';
60	}
61
62	// html
63	echo '<select id="' . $field['name'] . '" class="' . $field['class'] . '" name="' . $field['name'] . '" ' . $multiple . ' >';
64
65	// null
66	if($field['allow_null'] == '1')
67	{
68	echo '<option value="null"> - Select - </option>';
69	}
70
71	// loop through values and add them as options
72	foreach($field['choices'] as $key => $value)
73	{
74	if($field['optgroup'])
75	{
76	// this select is grouped with optgroup
77	if($key != '') echo '<optgroup label="'.$key.'">';
78
79	if($value)
80	{
81	foreach($value as $id => $label)
82	{
83	$selected = '';
84	if(is_array($field['value']) && in_array($id, $field['value']))
85	{
86	// 2. If the value is an array (multiple select), loop through values and check if it is selected
87	$selected = 'selected="selected"';
88	}
89	else
90	{
91	// 3. this is not a multiple select, just check normaly
92	if($id == $field['value'])
93	{
94	$selected = 'selected="selected"';
95	}
96	}
97	echo '<option value="'.$id.'" '.$selected.'>'.$label.'</option>';
98	}
99	}
100
101	if($key != '') echo '</optgroup>';
102	}
103	else
104	{
105	$selected = '';
106	if(is_array($field['value']) && in_array($key, $field['value']))
107	{
108	// 2. If the value is an array (multiple select), loop through values and check if it is selected
109	$selected = 'selected="selected"';
110	}
111	else
112	{
113	// 3. this is not a multiple select, just check normaly
114	if($key == $field['value'])
115	{
116	$selected = 'selected="selected"';
117	}
118	}
119	echo '<option value="'.$key.'" '.$selected.'>'.$value.'</option>';
120	}
121
122
123
124	}
125
126	echo '</select>';
127	}
128
129
130	/*--------------------------------------------------------------------------------------
131	*
132	* create_options
133	*
134	* @author Elliot Condon
135	* @since 2.0.6
136	* @updated 2.2.0
137	*
138	-------------------------------------------------------------------------------------/
139
140	function create_options($key, $field)
141	{
142	// defaults
143	$field['multiple'] = isset($field['multiple']) ? $field['multiple'] : '0';
144	$field['allow_null'] = isset($field['allow_null']) ? $field['allow_null'] : '0';
145	$field['default_value'] = isset($field['default_value']) ? $field['default_value'] : '';
146
147	// implode selects so they work in a textarea
148	if(isset($field['choices']) && is_array($field['choices']))
149	{
150	foreach($field['choices'] as $choice_key => $choice_val)
151	{
152	$field['choices'][$choice_key] = $choice_key.' : '.$choice_val;
153	}
154	$field['choices'] = implode("\n", $field['choices']);
155	}
156	else
157	{
158	$field['choices'] = "";
159	}
160
161	?>
162	<tr class="field_option field_option_<?php echo $this->name; ?>">
163	<td class="label">
164	<label for=""><?php _e("Choices",'acf'); ?></label>
165	<p class="description"><?php _e("Enter your choices one per line<br />
166	<br />
167	Red<br />
168	Blue<br />
169	<br />
170	or<br />
171	<br />
172	red : Red<br />
173	blue : Blue",'acf'); ?></p>
174	</td>
175	<td>
176	<textarea rows="5" name="fields[<?php echo $key; ?>][choices]" id=""><?php echo $field['choices']; ?></textarea>
177	</td>
178	</tr>
179	<tr class="field_option field_option_<?php echo $this->name; ?>">
180	<td class="label">
181	<label><?php _e("Default Value",'acf'); ?></label>
182	</td>
183	<td>
184	<?php
185	$this->parent->create_field(array(
186	'type' => 'text',
187	'name' => 'fields['.$key.'][default_value]',
188	'value' => $field['default_value'],
189	));
190	?>
191	</td>
192	</tr>
193	<tr class="field_option field_option_<?php echo $this->name; ?>">
194	<td class="label">
195	<label><?php _e("Allow Null?",'acf'); ?></label>
196	</td>
197	<td>
198	<?php
199	$this->parent->create_field(array(
200	'type' => 'radio',
201	'name' => 'fields['.$key.'][allow_null]',
202	'value' => $field['allow_null'],
203	'choices' => array(
204	'1' => 'Yes',
205	'0' => 'No',
206	),
207	'layout' => 'horizontal',
208	));
209	?>
210	</td>
211	</tr>
212	<tr class="field_option field_option_<?php echo $this->name; ?>">
213	<td class="label">
214	<label><?php _e("Select multiple values?",'acf'); ?></label>
215	</td>
216	<td>
217	<?php
218	$this->parent->create_field(array(
219	'type' => 'radio',
220	'name' => 'fields['.$key.'][multiple]',
221	'value' => $field['multiple'],
222	'choices' => array(
223	'1' => 'Yes',
224	'0' => 'No',
225	),
226	'layout' => 'horizontal',
227	));
228	?>
229	</td>
230	</tr>
231
232	<?php
233	}
234
235
236	/*--------------------------------------------------------------------------------------
237	*
238	* pre_save_field
239	* - called just before saving the field to the database.
240	*
241	* @author Elliot Condon
242	* @since 2.2.0
243	*
244	-------------------------------------------------------------------------------------/
245
246	function pre_save_field($field)
247	{
248	// defaults
249	$field['choices'] = isset($field['choices']) ? $field['choices'] : '';
250
251	// vars
252	$new_choices = array();
253
254	// explode choices from each line
255	if(strpos($field['choices'], "\n") !== false)
256	{
257	// found multiple lines, explode it
258	$field['choices'] = explode("\n", $field['choices']);
259	}
260	else
261	{
262	// no multiple lines!
263	$field['choices'] = array($field['choices']);
264	}
265
266	// key => value
267	foreach($field['choices'] as $choice)
268	{
269	if(strpos($choice, ' : ') !== false)
270	{
271	$choice = explode(' : ', $choice);
272	$new_choices[trim($choice[0])] = trim($choice[1]);
273	}
274	else
275	{
276	$new_choices[trim($choice)] = trim($choice);
277	}
278	}
279
280	// update choices
281	$field['choices'] = $new_choices;
282
283	// return updated field
284	return $field;
285
286	}
287
288
289	/*--------------------------------------------------------------------------------------
290	*
291	* get_value_for_api
292	*
293	* @author Elliot Condon
294	* @since 3.1.2
295	*
296	-------------------------------------------------------------------------------------/
297
298	function get_value_for_api($post_id, $field)
299	{
300	$value = parent::get_value($post_id, $field);
301
302	if($value == 'null')
303	{
304	$value = false;
305	}
306
307	return $value;
308	}
309
310	}
311
312	?>