tbl_relation.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Display table relations for viewing and editing
   5  *
   6  * includes phpMyAdmin relations and InnoDB relations
   7  *
   8  * @todo fix name handling: currently names with dots (.) are not properly handled for internal relations (but foreign keys relations are correct)
   9  * @todo foreign key constraints require both fields being of equal type and size
  10  * @todo check foreign fields to be from same type and size, all other makes no sense
  11  * @todo add an link to create an index required for constraints, or an option to do automatically
  12  * @todo if above todos are fullfilled we can add all fields meet requirements in the select dropdown
  13  * @package phpMyAdmin
  14  */
  15
  16 /**
  17  * Gets some core libraries
  18  */
  19 require_once './libraries/common.inc.php';
  20 $GLOBALS['js_include'][] = 'tbl_relation.js';
  21
  22 require_once './libraries/tbl_common.php';
  23 $url_query .= '&amp;goto=tbl_sql.php';
  24
  25
  26 /**
  27  * Gets tables informations
  28  */
  29 require_once './libraries/tbl_info.inc.php';
  30
  31 // Note: in libraries/tbl_links.inc.php we get and display the table comment.
  32 // For InnoDB, this comment contains the REFER information but any update
  33 // has not been done yet (will be done in tbl_relation.php later).
  34 $avoid_show_comment = true;
  35
  36 /**
  37  * Displays top menu links
  38  */
  39 require_once './libraries/tbl_links.inc.php';
  40
  41 $options_array = array(
  42     'CASCADE'   => 'CASCADE',
  43     'SET_NULL'  => 'SET NULL',
  44     'NO_ACTION' => 'NO ACTION',
  45     'RESTRICT'  => 'RESTRICT',
  46 );
  47
  48 /**
  49  * Generate dropdown choices
  50  *
  51  * @param   string   Message to display
  52  * @param   string   Name of the <select> field
  53  * @param   array    Choices for dropdown
  54  * @return  string   The existing value (for selected)
  55  *
  56  * @access  public
  57  */
  58 function PMA_generate_dropdown($dropdown_question, $select_name, $choices, $selected_value)
  59 {
  60     echo htmlspecialchars($dropdown_question) . '&nbsp;&nbsp;';
  61
  62     echo '<select name="' . htmlspecialchars($select_name) . '">' . "\n";
  63
  64     foreach ($choices as $one_value => $one_label) {
  65         echo '<option value="' . htmlspecialchars($one_value) . '"';
  66         if ($selected_value == $one_value) {
  67             echo ' selected="selected" ';
  68         }
  69         echo '>' . htmlspecialchars($one_label) . '</option>' . "\n";
  70     }
  71     echo '</select>' . "\n";
  72 }
  73
  74 /**
  75  * Split a string on backquote pairs
  76  *
  77  * @param   string  original string
  78  * @return  array   containing the elements (and their surrounding backquotes)
  79  *
  80  * @access  public
  81  */
  82 function PMA_backquote_split($text)
  83 {
  84     $elements = array();
  85     $final_pos = strlen($text) - 1;
  86     $pos = 0;
  87     while ($pos <= $final_pos) {
  88         $first_backquote = strpos($text, '`', $pos);
  89         $second_backquote = strpos($text, '`', $first_backquote + 1);
  90         // after the second one, there might be another one which means
  91         // this is an escaped backquote
  92         if ($second_backquote < $final_pos && '`' == $text[$second_backquote + 1]) {
  93             $second_backquote = strpos($text, '`', $second_backquote + 2);
  94         }
  95         if (false === $first_backquote || false === $second_backquote) {
  96             break;
  97         }
  98         $elements[] = substr($text, $first_backquote, $second_backquote - $first_backquote + 1);
  99         $pos = $second_backquote + 1;
 100     }
 101     return($elements);
 102 }
 103
 104 /**
 105  * Gets the relation settings
 106  */
 107 $cfgRelation = PMA_getRelationsParam();
 108
 109
 110 /**
 111  * Updates
 112  */
 113 if ($cfgRelation['relwork']) {
 114     $existrel = PMA_getForeigners($db, $table, '', 'internal');
 115 }
 116 if (PMA_foreignkey_supported($tbl_type)) {
 117     $existrel_foreign = PMA_getForeigners($db, $table, '', 'foreign');
 118 }
 119 if ($cfgRelation['displaywork']) {
 120     $disp     = PMA_getDisplayField($db, $table);
 121 }
 122
 123 // will be used in the logic for internal relations and foreign keys:
 124 $me_fields_name =
 125     isset($_REQUEST['fields_name'])
 126     ? $_REQUEST['fields_name']
 127     : null;
 128
 129 // u p d a t e s   f o r   I n t e r n a l    r e l a t i o n s
 130 if (isset($destination) && $cfgRelation['relwork']) {
 131
 132     foreach ($destination as $master_field_md5 => $foreign_string) {
 133         $upd_query = false;
 134
 135         // Map the fieldname's md5 back to its real name
 136         $master_field = $me_fields_name[$master_field_md5];
 137
 138         if (! empty($foreign_string)) {
 139             $foreign_string = trim($foreign_string, '`');
 140             list($foreign_db, $foreign_table, $foreign_field) =
 141                 explode('.', $foreign_string);
 142             if (! isset($existrel[$master_field])) {
 143                 $upd_query  = 'INSERT INTO ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['relation'])
 144                             . '(master_db, master_table, master_field, foreign_db, foreign_table, foreign_field)'
 145                             . ' values('
 146                             . '\'' . PMA_sqlAddSlashes($db) . '\', '
 147                             . '\'' . PMA_sqlAddSlashes($table) . '\', '
 148                             . '\'' . PMA_sqlAddSlashes($master_field) . '\', '
 149                             . '\'' . PMA_sqlAddSlashes($foreign_db) . '\', '
 150                             . '\'' . PMA_sqlAddSlashes($foreign_table) . '\','
 151                             . '\'' . PMA_sqlAddSlashes($foreign_field) . '\')';
 152             } elseif ($existrel[$master_field]['foreign_db'] . '.' .$existrel[$master_field]['foreign_table'] . '.' . $existrel[$master_field]['foreign_field'] != $foreign_string) {
 153                 $upd_query  = 'UPDATE ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['relation']) . ' SET'
 154                             . ' foreign_db       = \'' . PMA_sqlAddSlashes($foreign_db) . '\', '
 155                             . ' foreign_table    = \'' . PMA_sqlAddSlashes($foreign_table) . '\', '
 156                             . ' foreign_field    = \'' . PMA_sqlAddSlashes($foreign_field) . '\' '
 157                             . ' WHERE master_db  = \'' . PMA_sqlAddSlashes($db) . '\''
 158                             . ' AND master_table = \'' . PMA_sqlAddSlashes($table) . '\''
 159                             . ' AND master_field = \'' . PMA_sqlAddSlashes($master_field) . '\'';
 160             } // end if... else....
 161         } elseif (isset($existrel[$master_field])) {
 162             $upd_query      = 'DELETE FROM ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['relation'])
 163                             . ' WHERE master_db  = \'' . PMA_sqlAddSlashes($db) . '\''
 164                             . ' AND master_table = \'' . PMA_sqlAddSlashes($table) . '\''
 165                             . ' AND master_field = \'' . PMA_sqlAddSlashes($master_field) . '\'';
 166         } // end if... else....
 167         if ($upd_query) {
 168             PMA_query_as_controluser($upd_query);
 169         }
 170     } // end while
 171 } // end if (updates for internal relations)
 172
 173 // u p d a t e s    f o r    f o r e i g n    k e y s
 174 // (for now, one index name only; we keep the definitions if the
 175 // foreign db is not the same)
 176 // I use $sql_query to be able to display directly the query via
 177 // PMA_showMessage()
 178
 179 if (isset($_REQUEST['destination_foreign'])) {
 180     $display_query = '';
 181     $seen_error = false;
 182     foreach ($_REQUEST['destination_foreign'] as $master_field_md5 => $foreign_string) {
 183
 184         // Map the fieldname's md5 back to it's real name
 185         $master_field = $me_fields_name[$master_field_md5];
 186
 187         if (! empty($foreign_string)) {
 188             list($foreign_db, $foreign_table, $foreign_field) = PMA_backquote_split($foreign_string);
 189             if (! isset($existrel_foreign[$master_field])) {
 190                 // no key defined for this field
 191
 192                 // The next few lines are repeated below, so they
 193                 // could be put in an include file
 194                 // Note: I tried to enclose the db and table name with
 195                 // backquotes but MySQL 4.0.16 did not like the syntax
 196                 // (for example: `base2`.`table1`)
 197
 198                 $sql_query  = 'ALTER TABLE ' . PMA_backquote($table)
 199                             . ' ADD FOREIGN KEY ('
 200                             . PMA_backquote($master_field) . ')'
 201                             . ' REFERENCES '
 202                             . $foreign_db . '.'
 203                             . $foreign_table . '('
 204                             . $foreign_field . ')';
 205
 206                 if (! empty($_REQUEST['on_delete'][$master_field_md5])) {
 207                     $sql_query .= ' ON DELETE ' . $options_array[$_REQUEST['on_delete'][$master_field_md5]];
 208                 }
 209                 if (! empty($_REQUEST['on_update'][$master_field_md5])) {
 210                     $sql_query .= ' ON UPDATE ' . $options_array[$_REQUEST['on_update'][$master_field_md5]];
 211                 }
 212                 $sql_query .= ';';
 213                 $display_query .= $sql_query . "\n";
 214                 // end repeated code
 215
 216             } elseif (PMA_backquote($existrel_foreign[$master_field]['foreign_db']) != $foreign_db
 217                 || PMA_backquote($existrel_foreign[$master_field]['foreign_table']) != $foreign_table
 218                 || PMA_backquote($existrel_foreign[$master_field]['foreign_field']) != $foreign_field
 219                 || ($_REQUEST['on_delete'][$master_field_md5] != (!empty($existrel_foreign[$master_field]['on_delete']) ? $existrel_foreign[$master_field]['on_delete'] : ''))
 220                 || ($_REQUEST['on_update'][$master_field_md5] != (!empty($existrel_foreign[$master_field]['on_update']) ? $existrel_foreign[$master_field]['on_update'] : ''))
 221                    ) {
 222                 // another foreign key is already defined for this field
 223                 // or
 224                 // an option has been changed for ON DELETE or ON UPDATE
 225
 226                 // remove existing key
 227                 $sql_query  = 'ALTER TABLE ' . PMA_backquote($table)
 228                             . ' DROP FOREIGN KEY '
 229                             . PMA_backquote($existrel_foreign[$master_field]['constraint']) . ';';
 230
 231                 // I tried to send both in one query but it failed
 232                 PMA_DBI_query($sql_query);
 233                 $display_query .= $sql_query . "\n";
 234
 235                 // add another
 236                 $sql_query  = 'ALTER TABLE ' . PMA_backquote($table)
 237                             . ' ADD FOREIGN KEY ('
 238                             . PMA_backquote($master_field) . ')'
 239                             . ' REFERENCES '
 240                             . $foreign_db . '.'
 241                             . $foreign_table . '('
 242                             . $foreign_field . ')';
 243
 244                 if (! empty($_REQUEST['on_delete'][$master_field_md5])) {
 245                     $sql_query   .= ' ON DELETE '
 246                         . $options_array[$_REQUEST['on_delete'][$master_field_md5]];
 247                 }
 248                 if (! empty($_REQUEST['on_update'][$master_field_md5])) {
 249                     $sql_query   .= ' ON UPDATE '
 250                         . $options_array[$_REQUEST['on_update'][$master_field_md5]];
 251                 }
 252                 $sql_query .= ';';
 253                 $display_query .= $sql_query . "\n";
 254
 255             } // end if... else....
 256         } elseif (isset($existrel_foreign[$master_field])) {
 257             $sql_query  = 'ALTER TABLE ' . PMA_backquote($table)
 258                     . ' DROP FOREIGN KEY '
 259                     . PMA_backquote($existrel_foreign[$master_field]['constraint']);
 260             $sql_query .= ';';
 261             $display_query .= $sql_query . "\n";
 262         } // end if... else....
 263
 264         if (! empty($sql_query)) {
 265             PMA_DBI_try_query($sql_query);
 266             $tmp_error = PMA_DBI_getError();
 267             if (! empty($tmp_error)) {
 268                 $seen_error = true;
 269             }
 270             if (substr($tmp_error, 1, 4) == '1216'
 271             ||  substr($tmp_error, 1, 4) == '1452') {
 272                 PMA_mysqlDie($tmp_error, $sql_query, false, '', false);
 273                 echo PMA_showMySQLDocu('manual_Table_types', 'InnoDB_foreign_key_constraints') . "\n";
 274             }
 275             if (substr($tmp_error, 1, 4) == '1005') {
 276                 $message = PMA_Message::error( __('Error creating foreign key on %1$s (check data types)'));
 277                 $message->addParam($master_field);
 278                 $message->display();
 279                 echo PMA_showMySQLDocu('manual_Table_types', 'InnoDB_foreign_key_constraints') . "\n";
 280             }
 281             unset($tmp_error);
 282             $sql_query = '';
 283         }
 284     } // end foreach
 285     if (!empty($display_query)) {
 286         if ($seen_error) {
 287             PMA_showMessage(__('Error'), null, 'error');
 288         } else {
 289             PMA_showMessage(__('Your SQL query has been executed successfully'), null, 'success');
 290         }
 291     }
 292 } // end if isset($destination_foreign)
 293
 294
 295 // U p d a t e s   f o r   d i s p l a y   f i e l d
 296
 297 if ($cfgRelation['displaywork'] && isset($display_field)) {
 298     $upd_query = false;
 299     if ($disp) {
 300         if ($display_field != '') {
 301             $upd_query = 'UPDATE ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['table_info'])
 302                        . ' SET display_field = \'' . PMA_sqlAddSlashes($display_field) . '\''
 303                        . ' WHERE db_name  = \'' . PMA_sqlAddSlashes($db) . '\''
 304                        . ' AND table_name = \'' . PMA_sqlAddSlashes($table) . '\'';
 305         } else {
 306             $upd_query = 'DELETE FROM ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['table_info'])
 307                        . ' WHERE db_name  = \'' . PMA_sqlAddSlashes($db) . '\''
 308                        . ' AND table_name = \'' . PMA_sqlAddSlashes($table) . '\'';
 309         }
 310     } elseif ($display_field != '') {
 311         $upd_query = 'INSERT INTO ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['table_info'])
 312                    . '(db_name, table_name, display_field) '
 313                    . ' VALUES('
 314                    . '\'' . PMA_sqlAddSlashes($db) . '\','
 315                    . '\'' . PMA_sqlAddSlashes($table) . '\','
 316                    . '\'' . PMA_sqlAddSlashes($display_field) . '\')';
 317     }
 318
 319     if ($upd_query) {
 320         PMA_query_as_controluser($upd_query);
 321     }
 322 } // end if
 323
 324 // If we did an update, refresh our data
 325 if (isset($destination) && $cfgRelation['relwork']) {
 326     $existrel = PMA_getForeigners($db, $table, '', 'internal');
 327 }
 328 if (isset($destination_foreign) && PMA_foreignkey_supported($tbl_type)) {
 329     $existrel_foreign = PMA_getForeigners($db, $table, '', 'foreign');
 330 }
 331
 332 if ($cfgRelation['displaywork']) {
 333     $disp     = PMA_getDisplayField($db, $table);
 334 }
 335
 336
 337 /**
 338  * Dialog
 339  */
 340
 341 // common form
 342 echo '<form method="post" action="tbl_relation.php">' . "\n";
 343 echo PMA_generate_common_hidden_inputs($db, $table);
 344
 345
 346 // relations
 347
 348 if ($cfgRelation['relwork'] || PMA_foreignkey_supported($tbl_type)) {
 349     // To choose relations we first need all tables names in current db
 350     // and if the main table supports foreign keys
 351     // we use SHOW TABLE STATUS because we need to find other tables of the
 352     // same engine.
 353
 354     if (PMA_foreignkey_supported($tbl_type)) {
 355         $tab_query           = 'SHOW TABLE STATUS FROM ' . PMA_backquote($db);
 356         // [0] of the row is the name
 357         // [1] is the type
 358     } else {
 359         $tab_query           = 'SHOW TABLES FROM ' . PMA_backquote($db);
 360         // [0] of the row is the name
 361     }
 362
 363     $tab_rs              = PMA_DBI_query($tab_query, null, PMA_DBI_QUERY_STORE);
 364     $selectboxall[] = '';
 365     $selectboxall_foreign[] = '';
 366
 367     while ($curr_table = PMA_DBI_fetch_row($tab_rs)) {
 368         $current_table = new PMA_Table($curr_table[0], $db);
 369
 370         // explicitely ask for non-quoted list of indexed columns
 371         $selectboxall = array_merge($selectboxall, $current_table->getUniqueColumns($backquoted = false));
 372
 373         // if foreign keys are supported, collect all keys from other
 374         // tables of the same engine
 375         if (PMA_foreignkey_supported($tbl_type)
 376          && isset($curr_table[1])
 377          && strtoupper($curr_table[1]) == $tbl_type) {
 378              // explicitely ask for non-quoted list of indexed columns
 379              // need to obtain backquoted values to support dots inside values
 380              $selectboxall_foreign = array_merge($selectboxall_foreign, $current_table->getIndexedColumns($backquoted = true));
 381         }
 382     } // end while over tables
 383 } // end if
 384
 385 // Now find out the columns of our $table
 386 // need to use PMA_DBI_QUERY_STORE with PMA_DBI_num_rows() in mysqli
 387 $col_rs    = PMA_DBI_try_query('SHOW COLUMNS FROM ' . PMA_backquote($table) . ';', null, PMA_DBI_QUERY_STORE);
 388
 389 if ($col_rs && PMA_DBI_num_rows($col_rs) > 0) {
 390     while ($row = PMA_DBI_fetch_assoc($col_rs)) {
 391         $save_row[] = $row;
 392     }
 393     $saved_row_cnt  = count($save_row);
 394     ?>
 395     <fieldset>
 396     <legend><?php echo __('Relations'); ?></legend>
 397
 398     <table>
 399     <tr><th><?php echo __('Column'); ?></th>
 400     <?php
 401     if ($cfgRelation['relwork']) {
 402         echo '<th>' . __('Internal relation');
 403         if (PMA_foreignkey_supported($tbl_type)) {
 404             echo PMA_showHint(__('An internal relation is not necessary when a corresponding FOREIGN KEY relation exists.'));
 405         }
 406         echo '</th>';
 407     }
 408     if (PMA_foreignkey_supported($tbl_type)) {
 409         // this does not have to be translated, it's part of the MySQL syntax
 410         echo '<th colspan="2">' . __('Foreign key constraint') . ' (' . $tbl_type . ')';
 411         echo '</th>';
 412     }
 413     ?>
 414     </tr>
 415     <?php
 416     $odd_row = true;
 417     for ($i = 0; $i < $saved_row_cnt; $i++) {
 418         $myfield = $save_row[$i]['Field'];
 419         // Use an md5 as array index to avoid having special characters in the name atttibure (see bug #1746964 )
 420         $myfield_md5 = md5($myfield);
 421         $myfield_html = htmlspecialchars($myfield);
 422         ?>
 423     <tr class="<?php echo $odd_row ? 'odd' : 'even'; $odd_row = ! $odd_row; ?>">
 424         <td align="center">
 425             <strong><?php echo $myfield_html; ?></strong>
 426             <input type="hidden" name="fields_name[<?php echo $myfield_md5; ?>]" value="<?php echo $myfield_html; ?>"/>
 427         </td>
 428         <?php
 429         if ($cfgRelation['relwork']) {
 430             ?>
 431         <td><select name="destination[<?php echo $myfield_md5; ?>]">
 432             <?php
 433             // PMA internal relations
 434             if (isset($existrel[$myfield])) {
 435                 $foreign_field    = $existrel[$myfield]['foreign_db'] . '.'
 436                          . $existrel[$myfield]['foreign_table'] . '.'
 437                          . $existrel[$myfield]['foreign_field'];
 438             } else {
 439                 $foreign_field    = false;
 440             }
 441             $seen_key = false;
 442             foreach ($selectboxall as $value) {
 443                 echo '                '
 444                      . '<option value="' . htmlspecialchars($value) . '"';
 445                 if ($foreign_field && $value == $foreign_field) {
 446                     echo ' selected="selected"';
 447                     $seen_key = true;
 448                 }
 449                 echo '>' . htmlspecialchars($value) . '</option>'. "\n";
 450             } // end while
 451
 452             // if the link defined in relationtable points to a foreign field
 453             // that is not a key in the foreign table, we show the link
 454             // (will not be shown with an arrow)
 455             if ($foreign_field && !$seen_key) {
 456                 echo '                '
 457                     .'<option value="' . htmlspecialchars($foreign_field) . '"'
 458                     .' selected="selected"'
 459                     .'>' . $foreign_field . '</option>'. "\n";
 460             }
 461             ?>
 462             </select>
 463         </td>
 464             <?php
 465         } // end if (internal relations)
 466
 467         if (PMA_foreignkey_supported($tbl_type)) {
 468             echo '<td>';
 469             if (!empty($save_row[$i]['Key'])) {
 470                 ?>
 471             <span class="formelement">
 472             <select name="destination_foreign[<?php echo $myfield_md5; ?>]" class="referenced_column_dropdown">
 473                 <?php
 474                 if (isset($existrel_foreign[$myfield])) {
 475                     // need to backquote to support a dot character inside
 476                     // an element
 477                     $foreign_field    = PMA_backquote($existrel_foreign[$myfield]['foreign_db']) . '.'
 478                              . PMA_backquote($existrel_foreign[$myfield]['foreign_table']) . '.'
 479                              . PMA_backquote($existrel_foreign[$myfield]['foreign_field']);
 480                 } else {
 481                     $foreign_field    = false;
 482                 }
 483
 484                 $found_foreign_field = false;
 485                 foreach ($selectboxall_foreign as $value) {
 486                     echo '                '
 487                          . '<option value="' . htmlspecialchars($value) . '"';
 488                     if ($foreign_field && $value == $foreign_field) {
 489                         echo ' selected="selected"';
 490                         $found_foreign_field = true;
 491                     }
 492                     echo '>' . htmlspecialchars($value) . '</option>'. "\n";
 493                 } // end while
 494
 495                 // we did not find the foreign field in the tables of current db,
 496                 // must be defined in another db so show it to avoid erasing it
 497                 if (!$found_foreign_field && $foreign_field) {
 498                     echo '                '
 499                          . '<option value="' . htmlspecialchars($foreign_field) . '"';
 500                     echo ' selected="selected"';
 501                     echo '>' . $foreign_field . '</option>' . "\n";
 502                 }
 503
 504                 ?>
 505             </select>
 506             </span>
 507             <span class="formelement">
 508                 <?php
 509                 // For ON DELETE and ON UPDATE, the default action
 510                 // is RESTRICT as per MySQL doc; however, a SHOW CREATE TABLE
 511                 // won't display the clause if it's set as RESTRICT.
 512                 PMA_generate_dropdown('ON DELETE',
 513                     'on_delete[' . $myfield_md5 . ']',
 514                     $options_array,
 515                     isset($existrel_foreign[$myfield]['on_delete']) ? $existrel_foreign[$myfield]['on_delete']: 'RESTRICT');
 516
 517                 echo '</span>' . "\n"
 518                     .'<span class="formelement">' . "\n";
 519
 520                 PMA_generate_dropdown('ON UPDATE',
 521                     'on_update[' . $myfield_md5 . ']',
 522                     $options_array,
 523                     isset($existrel_foreign[$myfield]['on_update']) ? $existrel_foreign[$myfield]['on_update']: 'RESTRICT');
 524                 echo '</span>' . "\n";
 525             } else {
 526                 echo __('No index defined!');
 527             } // end if (a key exists)
 528             echo '        </td>';
 529         } // end if (InnoDB)
 530         ?>
 531     </tr>
 532         <?php
 533     } // end for
 534
 535     unset( $myfield, $myfield_md5, $myfield_html);
 536
 537     echo '    </table>' . "\n";
 538     echo '</fieldset>' . "\n";
 539
 540     if ($cfgRelation['displaywork']) {
 541         // Get "display_field" infos
 542         $disp = PMA_getDisplayField($db, $table);
 543         ?>
 544     <fieldset>
 545         <label><?php echo __('Choose column to display') . ': '; ?></label>
 546         <select name="display_field">
 547             <option value="">---</option>
 548         <?php
 549         foreach ($save_row AS $row) {
 550             echo '            <option value="' . htmlspecialchars($row['Field']) . '"';
 551             if (isset($disp) && $row['Field'] == $disp) {
 552                 echo ' selected="selected"';
 553             }
 554             echo '>' . htmlspecialchars($row['Field']) . '</option>'. "\n";
 555         } // end while
 556         ?>
 557         </select>
 558     </fieldset>
 559         <?php
 560     } // end if (displayworks)
 561     ?>
 562     <fieldset class="tblFooters">
 563         <input type="submit" value="<?php echo __('Save'); ?>" />
 564     </fieldset>
 565 </form>
 566     <?php
 567 } // end if (we have columns in this table)
 568
 569 /**
 570  * Displays the footer
 571  */
 572 require './libraries/footer.inc.php';
 573 ?>