loop.php
| 1 | <?php |
| 2 | |
| 3 | if( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly |
| 4 | |
| 5 | if( ! class_exists('acf_loop') ) : |
| 6 | |
| 7 | class acf_loop { |
| 8 | |
| 9 | |
| 10 | /* |
| 11 | * __construct |
| 12 | * |
| 13 | * This function will setup the class functionality |
| 14 | * |
| 15 | * @type function |
| 16 | * @date 5/03/2014 |
| 17 | * @since 5.0.0 |
| 18 | * |
| 19 | * @param n/a |
| 20 | * @return n/a |
| 21 | */ |
| 22 | |
| 23 | function __construct() { |
| 24 | |
| 25 | // vars |
| 26 | $this->loops = array(); |
| 27 | |
| 28 | } |
| 29 | |
| 30 | |
| 31 | /* |
| 32 | * is_empty |
| 33 | * |
| 34 | * This function will return true if no loops exist |
| 35 | * |
| 36 | * @type function |
| 37 | * @date 3/03/2016 |
| 38 | * @since 5.3.2 |
| 39 | * |
| 40 | * @param n/a |
| 41 | * @return (boolean) |
| 42 | */ |
| 43 | |
| 44 | function is_empty() { |
| 45 | |
| 46 | return empty( $this->loops ); |
| 47 | |
| 48 | } |
| 49 | |
| 50 | |
| 51 | /* |
| 52 | * is_loop |
| 53 | * |
| 54 | * This function will return true if a loop exists for the given array index |
| 55 | * |
| 56 | * @type function |
| 57 | * @date 3/03/2016 |
| 58 | * @since 5.3.2 |
| 59 | * |
| 60 | * @param $i (int) |
| 61 | * @return (boolean) |
| 62 | */ |
| 63 | |
| 64 | function is_loop( $i = 0 ) { |
| 65 | |
| 66 | return isset( $this->loops[ $i ] ); |
| 67 | |
| 68 | } |
| 69 | |
| 70 | |
| 71 | /* |
| 72 | * get_i |
| 73 | * |
| 74 | * This function will return a valid array index for the given $i |
| 75 | * |
| 76 | * @type function |
| 77 | * @date 3/03/2016 |
| 78 | * @since 5.3.2 |
| 79 | * |
| 80 | * @param $i (mixed) |
| 81 | * @return (int) |
| 82 | */ |
| 83 | |
| 84 | function get_i( $i = 0 ) { |
| 85 | |
| 86 | // 'active' |
| 87 | if( $i === 'active' ) $i = -1; |
| 88 | |
| 89 | |
| 90 | // 'previous' |
| 91 | if( $i === 'previous' ) $i = -2; |
| 92 | |
| 93 | |
| 94 | // allow negative to look at end of loops |
| 95 | if( $i < 0 ) { |
| 96 | |
| 97 | $i = count($this->loops) + $i; |
| 98 | |
| 99 | } |
| 100 | |
| 101 | |
| 102 | // return |
| 103 | return $i; |
| 104 | |
| 105 | } |
| 106 | |
| 107 | |
| 108 | /* |
| 109 | * add_loop |
| 110 | * |
| 111 | * This function will add a new loop |
| 112 | * |
| 113 | * @type function |
| 114 | * @date 3/03/2016 |
| 115 | * @since 5.3.2 |
| 116 | * |
| 117 | * @param $loop (array) |
| 118 | * @return n/a |
| 119 | */ |
| 120 | |
| 121 | function add_loop( $loop = array() ) { |
| 122 | |
| 123 | // defaults |
| 124 | $loop = wp_parse_args( $loop, array( |
| 125 | 'selector' => '', |
| 126 | 'name' => '', |
| 127 | 'value' => false, |
| 128 | 'field' => false, |
| 129 | 'i' => -1, |
| 130 | 'post_id' => 0, |
| 131 | 'key' => '' |
| 132 | )); |
| 133 | |
| 134 | |
| 135 | // ensure array |
| 136 | $loop['value'] = acf_get_array( $loop['value'] ); |
| 137 | |
| 138 | |
| 139 | // Re-index values if this loop starts from index 0. |
| 140 | // This allows ajax previews to work ($_POST data contains random unique array keys) |
| 141 | if( $loop['i'] == -1 ) { |
| 142 | |
| 143 | $loop['value'] = array_values($loop['value']); |
| 144 | |
| 145 | } |
| 146 | |
| 147 | |
| 148 | // append |
| 149 | $this->loops[] = $loop; |
| 150 | |
| 151 | |
| 152 | // return |
| 153 | return $loop; |
| 154 | |
| 155 | } |
| 156 | |
| 157 | |
| 158 | /* |
| 159 | * update_loop |
| 160 | * |
| 161 | * This function will update a loop's setting |
| 162 | * |
| 163 | * @type function |
| 164 | * @date 3/03/2016 |
| 165 | * @since 5.3.2 |
| 166 | * |
| 167 | * @param $i (mixed) |
| 168 | * @param $key (string) the loop setting name |
| 169 | * @param $value (mixed) the loop setting value |
| 170 | * @return (boolean) true on success |
| 171 | */ |
| 172 | |
| 173 | function update_loop( $i = 'active', $key = null, $value = null ) { |
| 174 | |
| 175 | // i |
| 176 | $i = $this->get_i( $i ); |
| 177 | |
| 178 | |
| 179 | // bail early if no set |
| 180 | if( !$this->is_loop($i) ) return false; |
| 181 | |
| 182 | |
| 183 | // set |
| 184 | $this->loops[ $i ][ $key ] = $value; |
| 185 | |
| 186 | |
| 187 | // return |
| 188 | return true; |
| 189 | |
| 190 | } |
| 191 | |
| 192 | |
| 193 | /* |
| 194 | * get_loop |
| 195 | * |
| 196 | * This function will return a loop, or loop's setting for a given index & key |
| 197 | * |
| 198 | * @type function |
| 199 | * @date 3/03/2016 |
| 200 | * @since 5.3.2 |
| 201 | * |
| 202 | * @param $i (mixed) |
| 203 | * @param $key (string) the loop setting name |
| 204 | * @return (mixed) false on failure |
| 205 | */ |
| 206 | |
| 207 | function get_loop( $i = 'active', $key = null ) { |
| 208 | |
| 209 | // i |
| 210 | $i = $this->get_i( $i ); |
| 211 | |
| 212 | |
| 213 | // bail early if no set |
| 214 | if( !$this->is_loop($i) ) return false; |
| 215 | |
| 216 | |
| 217 | // check for key |
| 218 | if( $key !== null ) { |
| 219 | |
| 220 | return $this->loops[ $i ][ $key ]; |
| 221 | |
| 222 | } |
| 223 | |
| 224 | |
| 225 | // return |
| 226 | return $this->loops[ $i ]; |
| 227 | |
| 228 | } |
| 229 | |
| 230 | |
| 231 | /* |
| 232 | * remove_loop |
| 233 | * |
| 234 | * This function will remove a loop |
| 235 | * |
| 236 | * @type function |
| 237 | * @date 3/03/2016 |
| 238 | * @since 5.3.2 |
| 239 | * |
| 240 | * @param $i (mixed) |
| 241 | * @return (boolean) true on success |
| 242 | */ |
| 243 | |
| 244 | function remove_loop( $i = 'active' ) { |
| 245 | |
| 246 | // i |
| 247 | $i = $this->get_i( $i ); |
| 248 | |
| 249 | |
| 250 | // bail early if no set |
| 251 | if( !$this->is_loop($i) ) return false; |
| 252 | |
| 253 | |
| 254 | // remove |
| 255 | unset($this->loops[ $i ]); |
| 256 | |
| 257 | |
| 258 | // reset keys |
| 259 | $this->loops = array_values( $this->loops ); |
| 260 | |
| 261 | // PHP 7.2 no longer resets array keys for empty value |
| 262 | if( $this->is_empty() ) { |
| 263 | $this->loops = array(); |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | } |
| 268 | |
| 269 | // initialize |
| 270 | acf()->loop = new acf_loop(); |
| 271 | |
| 272 | endif; // class_exists check |
| 273 | |
| 274 | |
| 275 | |
| 276 | /* |
| 277 | * acf_add_loop |
| 278 | * |
| 279 | * alias of acf()->loop->add_loop() |
| 280 | * |
| 281 | * @type function |
| 282 | * @date 6/10/13 |
| 283 | * @since 5.0.0 |
| 284 | * |
| 285 | * @param n/a |
| 286 | * @return n/a |
| 287 | */ |
| 288 | |
| 289 | function acf_add_loop( $loop = array() ) { |
| 290 | |
| 291 | return acf()->loop->add_loop( $loop ); |
| 292 | |
| 293 | } |
| 294 | |
| 295 | |
| 296 | /* |
| 297 | * acf_update_loop |
| 298 | * |
| 299 | * alias of acf()->loop->update_loop() |
| 300 | * |
| 301 | * @type function |
| 302 | * @date 6/10/13 |
| 303 | * @since 5.0.0 |
| 304 | * |
| 305 | * @param n/a |
| 306 | * @return n/a |
| 307 | */ |
| 308 | |
| 309 | function acf_update_loop( $i = 'active', $key = null, $value = null ) { |
| 310 | |
| 311 | return acf()->loop->update_loop( $i, $key, $value ); |
| 312 | |
| 313 | } |
| 314 | |
| 315 | |
| 316 | /* |
| 317 | * acf_get_loop |
| 318 | * |
| 319 | * alias of acf()->loop->get_loop() |
| 320 | * |
| 321 | * @type function |
| 322 | * @date 6/10/13 |
| 323 | * @since 5.0.0 |
| 324 | * |
| 325 | * @param n/a |
| 326 | * @return n/a |
| 327 | */ |
| 328 | |
| 329 | function acf_get_loop( $i = 'active', $key = null ) { |
| 330 | |
| 331 | return acf()->loop->get_loop( $i, $key ); |
| 332 | |
| 333 | } |
| 334 | |
| 335 | |
| 336 | /* |
| 337 | * acf_remove_loop |
| 338 | * |
| 339 | * alias of acf()->loop->remove_loop() |
| 340 | * |
| 341 | * @type function |
| 342 | * @date 6/10/13 |
| 343 | * @since 5.0.0 |
| 344 | * |
| 345 | * @param n/a |
| 346 | * @return n/a |
| 347 | */ |
| 348 | |
| 349 | function acf_remove_loop( $i = 'active' ) { |
| 350 | |
| 351 | return acf()->loop->remove_loop( $i ); |
| 352 | |
| 353 | } |
| 354 | |
| 355 | ?> |