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  * @version $Id$
  14  * @package phpMyAdmin
  15  */
  16
  17 /**
  18  * Gets some core libraries
  19  */
  20 require_once './libraries/common.inc.php';
  21 $GLOBALS['js_include'][] = 'tbl_relation.js';
  22
  23 require_once './libraries/tbl_common.php';
  24 $url_query .= '&amp;goto=tbl_sql.php';
  25
  26
  27 /**
  28  * Gets tables informations
  29  */
  30 require_once './libraries/tbl_info.inc.php';
  31
  32 // Note: in libraries/tbl_links.inc.php we get and display the table comment.
  33 // For InnoDB, this comment contains the REFER information but any update
  34 // has not been done yet (will be done in tbl_relation.php later).
  35 $avoid_show_comment = TRUE;
  36
  37 /**
  38  * Displays top menu links
  39  */
  40 require_once './libraries/tbl_links.inc.php';
  41
  42 require_once './libraries/relation.lib.php';
  43
  44 $options_array = array(
  45     'CASCADE'   => 'CASCADE',
  46     'SET_NULL'  => 'SET NULL',
  47     'NO_ACTION' => 'NO ACTION',
  48     'RESTRICT'  => 'RESTRICT',
  49 );
  50
  51 /**
  52  * Generate dropdown choices
  53  *
  54  * @param   string   Message to display
  55  * @param   string   Name of the <select> field
  56  * @param   array    Choices for dropdown
  57  * @return  string   The existing value (for selected)
  58  *
  59  * @access  public
  60  */
  61 function PMA_generate_dropdown($dropdown_question, $select_name, $choices, $selected_value)
  62 {
  63     echo htmlspecialchars($dropdown_question) . '&nbsp;&nbsp;';
  64
  65     echo '<select name="' . htmlspecialchars($select_name) . '">' . "\n";
  66
  67     foreach ($choices as $one_value => $one_label) {
  68         echo '<option value="' . htmlspecialchars($one_value) . '"';
  69         if ($selected_value == $one_value) {
  70             echo ' selected="selected" ';
  71         }
  72         echo '>' . htmlspecialchars($one_label) . '</option>' . "\n";
  73     }
  74     echo '</select>' . "\n";
  75 }
  76
  77 /**
  78  * Split a string on backquote pairs
  79  *
  80  * @param   string  original string
  81  * @return  array   containing the elements (and their surrounding backquotes)
  82  *
  83  * @access  public
  84  */
  85 function PMA_backquote_split($text)
  86 {
  87     $elements = array();
  88     $final_pos = strlen($text) - 1;
  89     $pos = 0;
  90     while ($pos <= $final_pos) {
  91         $first_backquote = strpos($text, '`', $pos);
  92         $second_backquote = strpos($text, '`', $first_backquote + 1);
  93         // after the second one, there might be another one which means
  94         // this is an escaped backquote
  95         if ($second_backquote < $final_pos && '`' == $text[$second_backquote + 1]) {
  96             $second_backquote = strpos($text, '`', $second_backquote + 2);
  97         }
  98         if (false === $first_backquote || false === $second_backquote) {
  99             break;
 100         }
 101         $elements[] = substr($text, $first_backquote, $second_backquote - $first_backquote + 1);
 102         $pos = $second_backquote + 1;
 103     }
 104     return($elements);
 105 }
 106
 107 /**
 108  * Gets the relation settings
 109  */
 110 $cfgRelation = PMA_getRelationsParam();
 111
 112
 113 /**
 114  * Updates
 115  */
 116 if ($cfgRelation['relwork']) {
 117     $existrel = PMA_getForeigners($db, $table, '', 'internal');
 118 }
 119 if (PMA_foreignkey_supported($tbl_type)) {
 120     $existrel_foreign = PMA_getForeigners($db, $table, '', 'foreign');
 121 }
 122 if ($cfgRelation['displaywork']) {
 123     $disp     = PMA_getDisplayField($db, $table);
 124 }
 125
 126 // will be used in the logic for internal relations and foreign keys:
 127 $me_fields_name =
 128     isset($_REQUEST['fields_name'])
 129     ? $_REQUEST['fields_name']
 130     : null;
 131
 132 // u p d a t e s   f o r   I n t e r n a l    r e l a t i o n s
 133 if (isset($destination) && $cfgRelation['relwork']) {
 134
 135     foreach ($destination as $master_field_md5 => $foreign_string) {
 136         $upd_query = false;
 137
 138         // Map the fieldname's md5 back to its real name
 139         $master_field = $me_fields_name[$master_field_md5];
 140
 141         if (! empty($foreign_string)) {
 142             $foreign_string = trim($foreign_string, '`');
 143             list($foreign_db, $foreign_table, $foreign_field) =
 144                 explode('.', $foreign_string);
 145             if (! isset($existrel[$master_field])) {
 146                 $upd_query  = 'INSERT INTO ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['relation'])
 147                             . '(master_db, master_table, master_field, foreign_db, foreign_table, foreign_field)'
 148                             . ' values('
 149                             . '\'' . PMA_sqlAddslashes($db) . '\', '
 150                             . '\'' . PMA_sqlAddslashes($table) . '\', '
 151                             . '\'' . PMA_sqlAddslashes($master_field) . '\', '
 152                             . '\'' . PMA_sqlAddslashes($foreign_db) . '\', '
 153                             . '\'' . PMA_sqlAddslashes($foreign_table) . '\','
 154                             . '\'' . PMA_sqlAddslashes($foreign_field) . '\')';
 155             } elseif ($existrel[$master_field]['foreign_db'] . '.' .$existrel[$master_field]['foreign_table'] . '.' . $existrel[$master_field]['foreign_field'] != $foreign_string) {
 156                 $upd_query  = 'UPDATE ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['relation']) . ' SET'
 157                             . ' foreign_db       = \'' . PMA_sqlAddslashes($foreign_db) . '\', '
 158                             . ' foreign_table    = \'' . PMA_sqlAddslashes($foreign_table) . '\', '
 159                             . ' foreign_field    = \'' . PMA_sqlAddslashes($foreign_field) . '\' '
 160                             . ' WHERE master_db  = \'' . PMA_sqlAddslashes($db) . '\''
 161                             . ' AND master_table = \'' . PMA_sqlAddslashes($table) . '\''
 162                             . ' AND master_field = \'' . PMA_sqlAddslashes($master_field) . '\'';
 163             } // end if... else....
 164         } elseif (isset($existrel[$master_field])) {
 165             $upd_query      = 'DELETE FROM ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['relation'])
 166                             . ' WHERE master_db  = \'' . PMA_sqlAddslashes($db) . '\''
 167                             . ' AND master_table = \'' . PMA_sqlAddslashes($table) . '\''
 168                             . ' AND master_field = \'' . PMA_sqlAddslashes($master_field) . '\'';
 169         } // end if... else....
 170         if ($upd_query) {
 171             PMA_query_as_controluser($upd_query);
 172         }
 173     } // end while
 174 } // end if (updates for internal relations)
 175
 176 // u p d a t e s    f o r    f o r e i g n    k e y s
 177 // (for now, one index name only; we keep the definitions if the
 178 // foreign db is not the same)
 179 // I use $sql_query to be able to display directly the query via
 180 // PMA_showMessage()
 181
 182 if (isset($_REQUEST['destination_foreign'])) {
 183     $display_query = '';
 184     $seen_error = false;
 185     foreach ($_REQUEST['destination_foreign'] as $master_field_md5 => $foreign_string) {
 186
 187         // Map the fieldname's md5 back to it's real name
 188         $master_field = $me_fields_name[$master_field_md5];
 189
 190         if (! empty($foreign_string)) {
 191             list($foreign_db, $foreign_table, $foreign_field) = PMA_backquote_split($foreign_string);
 192             if (!isset($existrel_foreign[$master_field])) {
 193                 // no key defined for this field
 194
 195                 // The next few lines are repeated below, so they
 196                 // could be put in an include file
 197                 // Note: I tried to enclose the db and table name with
 198                 // backquotes but MySQL 4.0.16 did not like the syntax
 199                 // (for example: `base2`.`table1`)
 200
 201                 $sql_query  = 'ALTER TABLE ' . PMA_backquote($table)
 202                             . ' ADD FOREIGN KEY ('
 203                             . PMA_backquote($master_field) . ')'
 204                             . ' REFERENCES '
 205                             . $foreign_db . '.'
 206                             . $foreign_table . '('
 207                             . $foreign_field . ')';
 208
 209                 if (! empty($_REQUEST['on_delete'][$master_field_md5])) {
 210                     $sql_query .= ' ON DELETE ' . $options_array[$_REQUEST['on_delete'][$master_field_md5]];
 211                 }
 212                 if (! empty($_REQUEST['on_update'][$master_field_md5])) {
 213                     $sql_query .= ' ON UPDATE ' . $options_array[$_REQUEST['on_update'][$master_field_md5]];
 214                 }
 215                 $sql_query .= ';';
 216                 $display_query .= $sql_query . "\n";
 217                 // end repeated code
 218
 219             } elseif (PMA_backquote($existrel_foreign[$master_field]['foreign_db']) != $foreign_db
 220                 || PMA_backquote($existrel_foreign[$master_field]['foreign_table']) != $foreign_table
 221                 || PMA_backquote($existrel_foreign[$master_field]['foreign_field']) != $foreign_field
 222                 || ($_REQUEST['on_delete'][$master_field_md5] != (!empty($existrel_foreign[$master_field]['on_delete']) ? $existrel_foreign[$master_field]['on_delete'] : ''))
 223                 || ($_REQUEST['on_update'][$master_field_md5] != (!empty($existrel_foreign[$master_field]['on_update']) ? $existrel_foreign[$master_field]['on_update'] : ''))
 224                    ) {
 225                 // another foreign key is already defined for this field
 226                 // or
 227                 // an option has been changed for ON DELETE or ON UPDATE
 228
 229                 // remove existing key
 230                 $sql_query  = 'ALTER TABLE ' . PMA_backquote($table)
 231                             . ' DROP FOREIGN KEY '
 232                             . PMA_backquote($existrel_foreign[$master_field]['constraint']) . ';';
 233
 234                 // I tried to send both in one query but it failed
 235                 PMA_DBI_query($sql_query);
 236                 $display_query .= $sql_query . "\n";
 237
 238                 // add another
 239                 $sql_query  = 'ALTER TABLE ' . PMA_backquote($table)
 240                             . ' ADD FOREIGN KEY ('
 241                             . PMA_backquote($master_field) . ')'
 242                             . ' REFERENCES '
 243                             . $foreign_db . '.'
 244                             . $foreign_table . '('
 245                             . $foreign_field . ')';
 246
 247                 if (! empty($_REQUEST['on_delete'][$master_field_md5])) {
 248                     $sql_query   .= ' ON DELETE '
 249                         . $options_array[$_REQUEST['on_delete'][$master_field_md5]];
 250                 }
 251                 if (! empty($_REQUEST['on_update'][$master_field_md5])) {
 252                     $sql_query   .= ' ON UPDATE '
 253                         . $options_array[$_REQUEST['on_update'][$master_field_md5]];
 254                 }
 255                 $sql_query .= ';';
 256                 $display_query .= $sql_query . "\n";
 257
 258             } // end if... else....
 259         } elseif (isset($existrel_foreign[$master_field])) {
 260             $sql_query  = 'ALTER TABLE ' . PMA_backquote($table)
 261                     . ' DROP FOREIGN KEY '
 262                     . PMA_backquote($existrel_foreign[$master_field]['constraint']);
 263             $sql_query .= ';';
 264             $display_query .= $sql_query . "\n";
 265         } // end if... else....
 266
 267         if (! empty($sql_query)) {
 268             PMA_DBI_try_query($sql_query);
 269             $tmp_error = PMA_DBI_getError();
 270             if (! empty($tmp_error)) {
 271                 $seen_error = true;
 272             }
 273             if (substr($tmp_error, 1, 4) == '1216'
 274             ||  substr($tmp_error, 1, 4) == '1452') {
 275                 PMA_mysqlDie($tmp_error, $sql_query, FALSE, '', FALSE);
 276                 echo PMA_showMySQLDocu('manual_Table_types', 'InnoDB_foreign_key_constraints') . "\n";
 277             }
 278             if (substr($tmp_error, 1, 4) == '1005') {
 279                 $message = PMA_Message::warning( __('Error creating foreign key on %1$s (check data types)'));
 280                 $message->addParam($master_field);
 281                 $message->display();
 282                 echo PMA_showMySQLDocu('manual_Table_types', 'InnoDB_foreign_key_constraints') . "\n";
 283             }
 284             unset($tmp_error);
 285             $sql_query = '';
 286         }
 287     } // end foreach
 288     if (!empty($display_query)) {
 289         if ($seen_error) {
 290             PMA_showMessage(__('Error'), null, 'error');
 291         } else {
 292             PMA_showMessage(__('Your SQL query has been executed successfully'), null, 'success');
 293         }
 294     }
 295 } // end if isset($destination_foreign)
 296
 297
 298 // U p d a t e s   f o r   d i s p l a y   f i e l d
 299
 300 if ($cfgRelation['displaywork'] && isset($display_field)) {
 301     $upd_query = false;
 302     if ($disp) {
 303         if ($display_field != '') {
 304             $upd_query = 'UPDATE ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['table_info'])
 305                        . ' SET display_field = \'' . PMA_sqlAddslashes($display_field) . '\''
 306                        . ' WHERE db_name  = \'' . PMA_sqlAddslashes($db) . '\''
 307                        . ' AND table_name = \'' . PMA_sqlAddslashes($table) . '\'';
 308         } else {
 309             $upd_query = 'DELETE FROM ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['table_info'])
 310                        . ' WHERE db_name  = \'' . PMA_sqlAddslashes($db) . '\''
 311                        . ' AND table_name = \'' . PMA_sqlAddslashes($table) . '\'';
 312         }
 313     } elseif ($display_field != '') {
 314         $upd_query = 'INSERT INTO ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['table_info'])
 315                    . '(db_name, table_name, display_field) '
 316                    . ' VALUES('
 317                    . '\'' . PMA_sqlAddslashes($db) . '\','
 318                    . '\'' . PMA_sqlAddslashes($table) . '\','
 319                    . '\'' . PMA_sqlAddslashes($display_field) . '\')';
 320     }
 321
 322     if ($upd_query) {
 323         PMA_query_as_controluser($upd_query);
 324     }
 325 } // end if
 326
 327 // If we did an update, refresh our data
 328 if (isset($destination) && $cfgRelation['relwork']) {
 329     $existrel = PMA_getForeigners($db, $table, '', 'internal');
 330 }
 331 if (isset($destination_foreign) && PMA_foreignkey_supported($tbl_type)) {
 332     $existrel_foreign = PMA_getForeigners($db, $table, '', 'foreign');
 333 }
 334
 335 if ($cfgRelation['displaywork']) {
 336     $disp     = PMA_getDisplayField($db, $table);
 337 }
 338
 339
 340 /**
 341  * Dialog
 342  */
 343
 344 // common form
 345 echo '<form method="post" action="tbl_relation.php">' . "\n";
 346 echo PMA_generate_common_hidden_inputs($db, $table);
 347
 348
 349 // relations
 350
 351 if ($cfgRelation['relwork'] || PMA_foreignkey_supported($tbl_type)) {
 352     // To choose relations we first need all tables names in current db
 353     // and if the main table supports foreign keys
 354     // we use SHOW TABLE STATUS because we need to find other tables of the
 355     // same engine.
 356
 357     if (PMA_foreignkey_supported($tbl_type)) {
 358         $tab_query           = 'SHOW TABLE STATUS FROM ' . PMA_backquote($db);
 359         // [0] of the row is the name
 360         // [1] is the type
 361     } else {
 362         $tab_query           = 'SHOW TABLES FROM ' . PMA_backquote($db);
 363         // [0] of the row is the name
 364     }
 365
 366     $tab_rs              = PMA_DBI_query($tab_query, null, PMA_DBI_QUERY_STORE);
 367     $selectboxall[] = '';
 368     $selectboxall_foreign[] = '';
 369
 370     while ($curr_table = PMA_DBI_fetch_row($tab_rs)) {
 371         $current_table = new PMA_Table($curr_table[0], $db);
 372
 373         // explicitely ask for non-quoted list of indexed columns
 374         $selectboxall = array_merge($selectboxall, $current_table->getUniqueColumns($backquoted = false));
 375
 376         // if foreign keys are supported, collect all keys from other
 377         // tables of the same engine
 378         if (PMA_foreignkey_supported($tbl_type)
 379          && isset($curr_table[1])
 380          && strtoupper($curr_table[1]) == $tbl_type) {
 381              // explicitely ask for non-quoted list of indexed columns
 382              // need to obtain backquoted values to support dots inside values
 383              $selectboxall_foreign = array_merge($selectboxall_foreign, $current_table->getIndexedColumns($backquoted = true));
 384         }
 385     } // end while over tables
 386 } // end if
 387
 388 // Now find out the columns of our $table
 389 // need to use PMA_DBI_QUERY_STORE with PMA_DBI_num_rows() in mysqli
 390 $col_rs    = PMA_DBI_try_query('SHOW COLUMNS FROM ' . PMA_backquote($table) . ';', null, PMA_DBI_QUERY_STORE);
 391
 392 if ($col_rs && PMA_DBI_num_rows($col_rs) > 0) {
 393     while ($row = PMA_DBI_fetch_assoc($col_rs)) {
 394         $save_row[] = $row;
 395     }
 396     $saved_row_cnt  = count($save_row);
 397     ?>
 398     <fieldset>
 399     <legend><?php echo __('Relations'); ?></legend>
 400
 401     <table>
 402     <tr><th><?php echo __('Column'); ?></th>
 403     <?php
 404     if ($cfgRelation['relwork']) {
 405         echo '<th>' . __('Internal relation');
 406         if (PMA_foreignkey_supported($tbl_type)) {
 407             echo PMA_showHint(__('An internal relation is not necessary when a corresponding FOREIGN KEY relation exists.'));
 408         }
 409         echo '</th>';
 410     }
 411     if (PMA_foreignkey_supported($tbl_type)) {
 412         // this does not have to be translated, it's part of the MySQL syntax
 413         echo '<th colspan="2">' . __('Foreign key constraint') . ' (' . $tbl_type . ')';
 414         echo '</th>';
 415     }
 416     ?>
 417     </tr>
 418     <?php
 419     $odd_row = true;
 420     for ($i = 0; $i < $saved_row_cnt; $i++) {
 421         $myfield = $save_row[$i]['Field'];
 422         // Use an md5 as array index to avoid having special characters in the name atttibure (see bug #1746964 )
 423         $myfield_md5 = md5($myfield);
 424         $myfield_html = htmlspecialchars($myfield);
 425         ?>
 426     <tr class="<?php echo $odd_row ? 'odd' : 'even'; $odd_row = ! $odd_row; ?>">
 427         <td align="center">
 428             <strong><?php echo $myfield_html; ?></strong>
 429             <input type="hidden" name="fields_name[<?php echo $myfield_md5; ?>]" value="<?php echo $myfield_html; ?>"/>
 430         </td>
 431         <?php
 432         if ($cfgRelation['relwork']) {
 433             ?>
 434         <td><select name="destination[<?php echo $myfield_md5; ?>]">
 435             <?php
 436             // PMA internal relations
 437             if (isset($existrel[$myfield])) {
 438                 $foreign_field    = $existrel[$myfield]['foreign_db'] . '.'
 439                          . $existrel[$myfield]['foreign_table'] . '.'
 440                          . $existrel[$myfield]['foreign_field'];
 441             } else {
 442                 $foreign_field    = FALSE;
 443             }
 444             $seen_key = FALSE;
 445             foreach ($selectboxall as $value) {
 446                 echo '                '
 447                      . '<option value="' . htmlspecialchars($value) . '"';
 448                 if ($foreign_field && $value == $foreign_field) {
 449                     echo ' selected="selected"';
 450                     $seen_key = TRUE;
 451                 }
 452                 echo '>' . htmlspecialchars($value) . '</option>'. "\n";
 453             } // end while
 454
 455             // if the link defined in relationtable points to a foreign field
 456             // that is not a key in the foreign table, we show the link
 457             // (will not be shown with an arrow)
 458             if ($foreign_field && !$seen_key) {
 459                 echo '                '
 460                     .'<option value="' . htmlspecialchars($foreign_field) . '"'
 461                     .' selected="selected"'
 462                     .'>' . $foreign_field . '</option>'. "\n";
 463             }
 464             ?>
 465             </select>
 466         </td>
 467             <?php
 468         } // end if (internal relations)
 469
 470         if (PMA_foreignkey_supported($tbl_type)) {
 471             echo '<td>';
 472             if (!empty($save_row[$i]['Key'])) {
 473                 ?>
 474             <span class="formelement">
 475             <select name="destination_foreign[<?php echo $myfield_md5; ?>]" class="referenced_column_dropdown">
 476                 <?php
 477                 if (isset($existrel_foreign[$myfield])) {
 478                     // need to backquote to support a dot character inside
 479                     // an element
 480                     $foreign_field    = PMA_backquote($existrel_foreign[$myfield]['foreign_db']) . '.'
 481                              . PMA_backquote($existrel_foreign[$myfield]['foreign_table']) . '.'
 482                              . PMA_backquote($existrel_foreign[$myfield]['foreign_field']);
 483                 } else {
 484                     $foreign_field    = FALSE;
 485                 }
 486
 487                 $found_foreign_field = FALSE;
 488                 foreach ($selectboxall_foreign as $value) {
 489                     echo '                '
 490                          . '<option value="' . htmlspecialchars($value) . '"';
 491                     if ($foreign_field && $value == $foreign_field) {
 492                         echo ' selected="selected"';
 493                         $found_foreign_field = TRUE;
 494                     }
 495                     echo '>' . htmlspecialchars($value) . '</option>'. "\n";
 496                 } // end while
 497
 498                 // we did not find the foreign field in the tables of current db,
 499                 // must be defined in another db so show it to avoid erasing it
 500                 if (!$found_foreign_field && $foreign_field) {
 501                     echo '                '
 502                          . '<option value="' . htmlspecialchars($foreign_field) . '"';
 503                     echo ' selected="selected"';
 504                     echo '>' . $foreign_field . '</option>' . "\n";
 505                 }
 506
 507                 ?>
 508             </select>
 509             </span>
 510             <span class="formelement">
 511                 <?php
 512                 // For ON DELETE and ON UPDATE, the default action
 513                 // is RESTRICT as per MySQL doc; however, a SHOW CREATE TABLE
 514                 // won't display the clause if it's set as RESTRICT.
 515                 PMA_generate_dropdown('ON DELETE',
 516                     'on_delete[' . $myfield_md5 . ']',
 517                     $options_array,
 518                     isset($existrel_foreign[$myfield]['on_delete']) ? $existrel_foreign[$myfield]['on_delete']: 'RESTRICT');
 519
 520                 echo '</span>' . "\n"
 521                     .'<span class="formelement">' . "\n";
 522
 523                 PMA_generate_dropdown('ON UPDATE',
 524                     'on_update[' . $myfield_md5 . ']',
 525                     $options_array,
 526                     isset($existrel_foreign[$myfield]['on_update']) ? $existrel_foreign[$myfield]['on_update']: 'RESTRICT');
 527                 echo '</span>' . "\n";
 528             } else {
 529                 echo __('No index defined!');
 530             } // end if (a key exists)
 531             echo '        </td>';
 532         } // end if (InnoDB)
 533         ?>
 534     </tr>
 535         <?php
 536     } // end for
 537
 538     unset( $myfield, $myfield_md5, $myfield_html);
 539
 540     echo '    </table>' . "\n";
 541     echo '</fieldset>' . "\n";
 542
 543     if ($cfgRelation['displaywork']) {
 544         // Get "display_field" infos
 545         $disp = PMA_getDisplayField($db, $table);
 546         ?>
 547     <fieldset>
 548         <label><?php echo __('Choose column to display') . ': '; ?></label>
 549         <select name="display_field">
 550             <option value="">---</option>
 551         <?php
 552         foreach ($save_row AS $row) {
 553             echo '            <option value="' . htmlspecialchars($row['Field']) . '"';
 554             if (isset($disp) && $row['Field'] == $disp) {
 555                 echo ' selected="selected"';
 556             }
 557             echo '>' . htmlspecialchars($row['Field']) . '</option>'. "\n";
 558         } // end while
 559         ?>
 560         </select>
 561     </fieldset>
 562         <?php
 563     } // end if (displayworks)
 564     ?>
 565     <fieldset class="tblFooters">
 566         <input type="submit" value="<?php echo __('Save'); ?>" />
 567     </fieldset>
 568 </form>
 569     <?php
 570 } // end if (we have columns in this table)
 571
 572 /**
 573  * Displays the footer
 574  */
 575 require_once './libraries/footer.inc.php';
 576 ?>