classes/pltableeditor.php

   1 <?php
   2 /***************************************************************************
   3  *  Copyright (C) 2003-2011 Polytechnique.org                              *
   4  *  http://opensource.polytechnique.org/                                   *
   5  *                                                                         *
   6  *  This program is free software; you can redistribute it and/or modify   *
   7  *  it under the terms of the GNU General Public License as published by   *
   8  *  the Free Software Foundation; either version 2 of the License, or      *
   9  *  (at your option) any later version.                                    *
  10  *                                                                         *
  11  *  This program is distributed in the hope that it will be useful,        *
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
  14  *  GNU General Public License for more details.                           *
  15  *                                                                         *
  16  *  You should have received a copy of the GNU General Public License      *
  17  *  along with this program; if not, write to the Free Software            *
  18  *  Foundation, Inc.,                                                      *
  19  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA                *
  20  ***************************************************************************/
  21
  22 class PLTableEditor
  23 {
  24     // the plat/al name of the page
  25     public $pl;
  26     // the table name
  27     public $table;
  28     // joint tables to delete when deleting an entry
  29     public $jtables = array();
  30     /** joint tables to add optional infos
  31      * associative array : keys are the tables names, values are the joint
  32      * clauses
  33      * @see add_option_fields
  34      */
  35     public $otables = array();
  36     /** optional fields
  37      * These fields are used to display additionnal infos in listing (an only
  38      * there). The additionnal infos are retreived from other tables. This var
  39      * is an associative array : keys are the sql name of the fields
  40      * (table.field) where table must be in $otables, values are a list of the
  41      * name used in $vars, the description and the type of the field, and the
  42      * var it should precede.
  43      */
  44     public $ofields = array();
  45     // sorting field
  46     public $sort = array();
  47     // the id field
  48     public $idfield;
  49     // possibility to edit the field
  50     public $idfield_editable;
  51     // vars
  52     public $vars;
  53     // number of displayed fields
  54     public $nbfields;
  55     // a where clause to restrict table
  56     public $whereclause;
  57     /** Forced values
  58      * This is an associative array of (field, value) to enforce.
  59      * Only rows where each of the fields has the specified value will
  60      * be selected; and added values will use these values for these fields:
  61      *
  62      * $forced_values = array('foo', 'bar')
  63      * => Selects rows with WHERE foo = 'bar'
  64      * => Insertions are done with SET foo = 'bar'
  65      */
  66     public $forced_values = array();
  67
  68     // the field for sorting entries
  69     public $sortfield;
  70     public $sortdesc = false;
  71     // action to do to delete row:
  72     // null => delete effectively, false => no deletion, SQL
  73     public $delete_action;
  74     public $delete_message;
  75     // Should "Save" button return to the list view
  76     public $auto_return = true;
  77
  78     /* table editor for platal
  79      * $plname : the PLname of the page, ex: admin/payments
  80      * $table : the table to edit, ex: profile_medals
  81      * $idfield : the field of the table which is the id, ex: id
  82      * $editid : is the id editable or not (if not, it is considered as an int)
  83      */
  84     public function __construct($plname, $table, $idfield, $editid = false, $idfield2 = false)
  85     {
  86         $this->pl = $plname;
  87         $this->table = $table;
  88         $this->idfield = $idfield;
  89         $this->idfield2 = $idfield2;
  90         $this->sortfield = $idfield;
  91         $this->idfield_editable = $editid;
  92         $this->whereclause = '1';
  93         $r = XDB::iterator("SHOW FULL COLUMNS FROM $table");
  94         $this->vars = array();
  95         while ($a = $r->next()) {
  96             // desc will be the title of the column
  97             $a['desc'] = $a['Field'];
  98             // display_list decides whether to display the field in 'list' mode
  99             $a['display_list'] = true;
 100             // display_item decides whether a field is displayed in 'item edition' mode
 101             $a['display_item'] = true;
 102
 103             if (substr($a['Type'],0,8) == 'varchar(') {
 104                 // limit editing box size
 105                 $a['Size'] = $a['Maxlength'] = substr($a['Type'], 8, strlen($a['Type']) - 9);
 106                 if ($a['Size'] > 40) $a['Size'] = 40;
 107                 // if too big, put a textarea
 108                 $a['Type'] = ($a['Maxlength']<200)?'varchar':'varchar200';
 109             }
 110             elseif ($a['Type'] == 'text' || $a['Type'] == 'mediumtext')
 111                 $a['Type'] = 'textarea';
 112             elseif (substr($a['Type'],0,4) == 'set(') {
 113                 // get the list of options
 114                 $a['List'] = explode('§',str_replace("','","§",substr($a['Type'], 5, strlen($a['Type']) - 7)));
 115                 if (count($a['List']) == 1) {
 116                     $a['Type'] = 'checkbox';
 117                     $a['Value'] = $a['List'][0];
 118                 } else {
 119                     $a['Type'] = 'set';
 120                 }
 121             }
 122             elseif (substr($a['Type'],0,5) == 'enum(') {
 123                 // get the list of options
 124                 $a['List'] = explode('§',str_replace("','","§",substr($a['Type'], 6, strlen($a['Type']) - 8)));
 125                 $a['Type'] = 'enum';
 126             }
 127             elseif (substr($a['Type'],0,10) == 'timestamp(' || $a['Type'] == 'datetime') {
 128                 $a['Type'] = 'timestamp';
 129             }
 130             elseif ($a['Comment'] == 'ip_address') {
 131                 $a['Type']='ip_address';
 132             }
 133
 134             $this->vars[$a['Field']] = $a;
 135         }
 136         $this->vars[$idfield]['desc'] = 'id';
 137     }
 138
 139     // called before creating a new entry
 140     private function prepare_new()
 141     {
 142         $entry = array();
 143         foreach ($this->vars as $field => $descr) {
 144             $entry[$field] = $descr['Default'];
 145         }
 146         return $this->prepare_edit($entry);
 147     }
 148
 149     // called before editing $entry
 150     private function prepare_edit(&$entry)
 151     {
 152         foreach ($this->vars as $field => $descr) {
 153             if ($descr['Type'] == 'set') {
 154                 // get the list of options selected
 155                 $selected = explode(',', $entry[$field]);
 156                 $entry[$field] = array();
 157                 foreach ($selected as $option)
 158                     $entry[$field][$option] = 1;
 159             }
 160             if ($descr['Type'] == 'timestamp') {
 161                 // set readable timestamp
 162                 $date =& $entry[$field];
 163                 $date = preg_replace('/([0-9]{4})([0-9]{2})([0-9]{2})([0-9]{2})([0-9]{2})([0-9]{2})/', '\3/\2/\1 \4:\5:\6', $date);
 164             }
 165             if ($descr['Type'] == 'date') {
 166                 $date =& $entry[$field];
 167                 $date = preg_replace('/([0-9]{4})-?([0-9]{2})-?([0-9]{2})/', '\3/\2/\1', $date);
 168             }
 169             if ($descr['Type'] == 'ip_address') {
 170                 $ip = & $entry[$field];
 171                 $ip = long2ip($ip);
 172             }
 173         }
 174         foreach ($this->forced_values as $field => $value) {
 175             $entry[$field] = $value;
 176         }
 177         return $entry;
 178     }
 179
 180     // set whether the save button show redirect to list view or edit view
 181     public function list_on_edit($var)
 182     {
 183         $this->auto_return = $var;
 184     }
 185
 186     // change display of a field
 187     public function describe($name, $desc, $display_list, $display_item=true)
 188     {
 189         $this->vars[$name]['desc'] = $desc;
 190         $this->vars[$name]['display_list'] = $display_list;
 191         $this->vars[$name]['display_item'] = $display_item;
 192     }
 193
 194     // add a join table, when deleting a row corresponding entries will be deleted in these tables
 195     public function add_join_table($name,$joinid,$joindel,$joinextra="")
 196     {
 197         if ($joindel)
 198             $this->jtables[$name] = array("joinid" => $joinid,"joinextra" => $joinextra?(" AND ".$joinextra):"");
 199     }
 200
 201     /** Add optional table
 202      * @see add_option_field
 203      * @param $name the table sql name
 204      * @param $jointclause the full joint clause. Use t as main table alias
 205      * name.
 206      */
 207     public function add_option_table($name, $jointclause)
 208     {
 209         $this->otables[$name] = $jointclause;
 210     }
 211
 212     /** Add optional field
 213      * These fields are used to display additionnal infos in listing (and only
 214      * there). The additionnal infos are retreived from other tables.
 215      * @param $sqlname is the full sql name (table.field) where table must be
 216      * added with add_option_table
 217      * @param $name the name used for sort (please make it different from
 218      * other fields in main table or subtables)
 219      * @param $desc the description displayed as column header
 220      * @param $type the typed used for display
 221      */
 222     public function add_option_field($sqlname, $name, $desc, $type = null, $nextvar = null)
 223     {
 224         $this->ofields[$sqlname] = array($name, $desc, $type, $nextvar);
 225     }
 226
 227     // add a sort key
 228     public function add_sort_field($key, $desc = false, $default = false)
 229     {
 230         if ($default) {
 231             $this->sortfield = $key . ($desc ? ' DESC' : '');
 232         } else {
 233             $this->sort[] = $key . ($desc ? ' DESC' : '');
 234         }
 235     }
 236
 237     // force the value of a field in select and add
 238     public function force_field_value($field, $value)
 239     {
 240         $this->forced_values[$field] = $value;
 241     }
 242
 243     // add a where clause to limit table listing
 244     public function set_where_clause($whereclause="1")
 245     {
 246         $this->whereclause = $whereclause;
 247     }
 248
 249     // set an action when trying to delete row
 250     public function on_delete($action = NULL, $message = NULL)
 251     {
 252         $this->delete_action = $action;
 253         $this->delete_message = $message;
 254     }
 255
 256     /** Retrieve the 'WHERE' clause to use for this PlTableEditor.
 257      * Takes into account $this->whereclause and $this->forced_values.
 258      *
 259      * @param $extra_clause optional extra clause to add to the WHERE
 260      * @return The WHERE clause to use
 261      */
 262     protected function get_where_clause($extra_clause=null)
 263     {
 264         $parts = array();
 265         $parts[] = $this->whereclause;
 266         if ($extra_clause !== null) {
 267             $parts[] = $extra_clause;
 268         }
 269         foreach ($this->forced_values as $field => $val) {
 270             $parts[] = XDB::format("$field = {?}", $val);
 271         }
 272         return implode(' AND ', $parts);
 273     }
 274
 275     // call when done
 276     public function apply(PlPage $page, $action, $id = false, $id2 = false)
 277     {
 278         $page->coreTpl('table-editor.tpl');
 279         $list = true;
 280         if ($action == 'delete' && $id !== false) {
 281             S::assert_xsrf_token();
 282
 283             if (!isset($this->delete_action)) {
 284                 foreach ($this->jtables as $table => $j)
 285                     XDB::execute("DELETE FROM {$table} WHERE {$j['joinid']} = {?}{$j['joinextra']}", $id);
 286                 $where = XDB::format("{$this->idfield} = {?}", $id);
 287                 if ($this->idfield2) {
 288                     $where .= XDB::format(" AND {$this->idfield2} = {?}", $id2);
 289                 }
 290                 XDB::rawExecute("DELETE FROM {$this->table} WHERE " . $this->get_where_clause($where));
 291                 $page->trigSuccess("L'entrée " . $id . (($id2) ? '-' . $id2 : '') . ' a été supprimée.');
 292             } else if ($this->delete_action) {
 293                 XDB::execute($this->delete_action, $id);
 294                 if (isset($this->delete_message)) {
 295                     $page->trigSuccess($this->delete_message);
 296                 } else {
 297                     $page->trigSuccess("L'entrée ".$id." a été supprimée.");
 298                 }
 299             } else {
 300                 $page->trigError("Impossible de supprimer l'entrée.");
 301             }
 302         }
 303         if ($action == 'edit' && $id !== false) {
 304             $r = XDB::query("SELECT * FROM {$this->table} WHERE {$this->idfield} = {?} AND " . $this->get_where_clause(), $id);
 305             $entry = $r->fetchOneAssoc();
 306             $page->assign('entry', $this->prepare_edit($entry));
 307             $page->assign('id', $id);
 308             $list = false;
 309         }
 310         if ($action == 'massadd') {
 311             $importer = new CSVImporter($this->table, $this->idfield_editable ? $this->idfield : null);
 312             $fields   = array();
 313             foreach ($this->vars as $field=>$descr) {
 314                 if ($this->idfield_editable || $field != $this->idfield) {
 315                     $fields[] = $field;
 316                     $importer->describe($field, @$descr['desc']);
 317                 }
 318             }
 319             foreach ($this->forced_values as $field => $value) {
 320                 $importer->forceValue($field, $value);
 321             }
 322             $page->assign('massadd', true);
 323             $importer->apply($page, $this->pl . '/massadd', $fields);
 324             $list = false;
 325         }
 326         if ($action == 'new') {
 327             if (!$this->idfield_editable) {
 328                 $page->assign('entry', $this->prepare_new());
 329             }
 330             $list = false;
 331         }
 332         if ($action == 'update') {
 333             S::assert_xsrf_token();
 334
 335             $cancel = false;
 336             $values = array();
 337             $new = false;
 338             foreach ($this->vars as $field => $descr) {
 339                 $val = null;
 340                 $new = ($id === false || $id === null);
 341                 if ($field == $this->idfield && !$this->idfield_editable) {
 342                     if ($new) {
 343                         $val = XDB::fetchOneCell("SELECT MAX({$field}) + 1
 344                                                     FROM {$this->table}");
 345                     } else {
 346                         continue;
 347                     }
 348                 } elseif (array_key_exists($field, $this->forced_values)) {
 349                     $val = $this->forced_values[$field];
 350                 } elseif ($descr['Type'] == 'set') {
 351                     $val = new PlFlagset();
 352                     if (Post::has($field)) {
 353                         foreach (Post::v($field) as $option) {
 354                             $val->addFlag($option);
 355                         }
 356                     }
 357                 } elseif ($descr['Type'] == 'checkbox') {
 358                     $val = Post::has($field)? $descr['Value'] : "";
 359                 } elseif (Post::has($field)) {
 360                     $val = Post::v($field);
 361                     if ($descr['Type'] == 'timestamp') {
 362                         $val = preg_replace('/([0-9]{1,2})\/([0-9]{1,2})\/([0-9]{4}) ([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2})/', '\3\2\1\4\5\6', $val);
 363                     } else if ($descr['Type'] == 'date') {
 364                         $val = preg_replace('/([0-9]{1,2})\/([0-9]{1,2})\/([0-9]{4})/', '\3-\2-\1', $val);
 365                     } elseif ($descr['Type'] == 'ip_address') {
 366                         $val = ip2long($val);
 367                     }
 368                 } elseif ($descr['display_item']) {
 369                     $cancel = true;
 370                     $page->trigError("Il manque le champ ".$field);
 371                 }
 372                 $values[$field] = XDB::escape($val);
 373             }
 374             if (!$cancel) {
 375                 if (!$new) {
 376                     $update = array();
 377                     foreach ($values as $field => $value) {
 378                         $update[] = $field . ' = ' . $value;
 379                     }
 380                     $update = implode(', ', $update);
 381                     XDB::rawExecute("UPDATE {$this->table}
 382                                         SET {$update}
 383                                       WHERE {$this->idfield} = " . XDB::escape($id) . "
 384                                       AND " . $this->get_where_clause());
 385                 } else {
 386                     $fields = implode(', ', array_keys($values));
 387                     $values = implode(', ', $values);
 388                     XDB::rawExecute("INSERT INTO  {$this->table} ({$fields})
 389                                           VALUES  ({$values})");
 390                 }
 391                 if ($id !== false && $id !== null) {
 392                     $page->trigSuccess("L'entrée ".$id." a été mise à jour.");
 393                 } else {
 394                     $page->trigSuccess("Une nouvelle entrée a été créée.");
 395                     $id = XDB::insertId();
 396                 }
 397             } else {
 398                 $page->trigError("Impossible de mettre à jour.");
 399             }
 400             if (!$this->auto_return) {
 401                 return $this->apply($page, 'edit', $id);
 402             }
 403         }
 404         if ($action == 'sort') {
 405             $this->sortfield = $id;
 406         }
 407         if ($action == 'sortdesc') {
 408             $this->sortfield = $id.' DESC';
 409         }
 410         if ($list) {
 411             // user can sort by field by clicking the title of the column
 412             if (isset($this->sortfield)) {
 413                 // add this sort order after the others (chosen by dev)
 414                 $this->add_sort_field($this->sortfield);
 415                 if (substr($this->sortfield,-5) == ' DESC') {
 416                     $this->sortfield = substr($this->sortfield,0,-5);
 417                     $this->sortdesc = true;
 418                 }
 419             }
 420             if (count($this->sort) > 0) {
 421                 $sort = 'ORDER BY ' . join($this->sort, ',');
 422             }
 423             // optional infos columns
 424             $optional_fields = '';
 425             if (count($this->ofields)) {
 426                 $order = array();
 427                 foreach ($this->vars as $i => $aliasname) {
 428                     $order[sprintf('%f',count($order))] = $i;
 429                 }
 430                 // delta for indexing optional columns between existing ones
 431                 $changeorder = 0.5;
 432                 foreach ($this->ofields as $sqlname => $ofieldvalues) {
 433                     list($aliasname, $desc, $type, $nextvar) = $ofieldvalues;
 434                     $optional_fields .= ', '.$sqlname.' AS '.$aliasname;
 435                     $this->describe($aliasname, $desc, true);
 436                     $this->vars[$aliasname]['optional'] = true;
 437                     if (isset($type)) {
 438                         $this->vars[$aliasname]['Type'] = $type;
 439                     }
 440                     if (isset($nextvar) && isset($this->vars[$nextvar]) && $nextvar != $aliasname) {
 441                         $nextkey = array_search($nextvar, $order);
 442                         $order[sprintf('%f',$nextkey - $changeorder)] = $aliasname;
 443                         $changeorder = $changeorder / 2;
 444                     } else {
 445                         $order[sprintf('%f',count($order))] = $aliasname;
 446                     }
 447                     $this->vars[$aliasname]['Field'] = $aliasname;
 448                 }
 449                 if ($changeorder != 0.5) {
 450                     ksort($order);
 451                     $orderedvars = array();
 452                     foreach ($order as $aliasname) {
 453                         $orderedvars[$aliasname] = $this->vars[$aliasname];
 454                     }
 455                     $this->vars = $orderedvars;
 456                 }
 457             }
 458             $optional_joints = '';
 459             foreach ($this->otables as $tablename => $jointclause) {
 460                 $optional_joints .= ' LEFT JOIN '.$tablename.' ON ('.$jointclause.')';
 461             }
 462             $it = XDB::iterator("SELECT t.* {$optional_fields} FROM {$this->table} AS t {$optional_joints} WHERE " . $this->get_where_clause() . " $sort");
 463             $this->nbfields = 0;
 464             foreach ($this->vars as $field => $descr)
 465                 if ($descr['display_list']) $this->nbfields++;
 466             $page->assign('list', $it);
 467         }
 468         $page->assign('t', $this);
 469     }
 470 }
 471
 472 // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8:
 473 ?>