/usr/share/awl/inc/classEditor.php is in libawl-php 0.55-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/**
* Class for editing a record using a templated form.
*
* @package awl
* @subpackage classEditor
* @author Andrew McMillan <andrew@mcmillan.net.nz>
* @copyright Catalyst IT Ltd, Morphoss Ltd <http://www.morphoss.com/>
* @license http://gnu.org/copyleft/gpl.html GNU GPL v2
*/
require_once("DataUpdate.php");
require_once("DataEntry.php");
/**
* A class for the fields in the editor
* @package awl
*/
class EditorField
{
var $Field;
var $Sql;
var $Value;
var $Attributes;
var $LookupSql;
var $OptionList;
/**
* Creates an EditorField for use in the Editor, possibly initialising the SQL for calculating it's
* value, and lookup_sql for use in drop-down lists.
*
* @param unknown $field
* @param string $sql
* @param string $lookup_sql
*/
function __construct( $field, $sql="", $lookup_sql="" ) {
global $session;
$this->Field = $field;
$this->Sql = $sql;
$this->LookupSql = $lookup_sql;
$this->Attributes = array();
}
function Set($value) {
$this->Value = $value;
}
/**
* Set the SQL used for this field, if it is more than just a field name.
* @param unknown $sql
*/
function SetSql( $sql ) {
$this->Sql = $sql;
}
/**
* Set the lookup SQL to use to populate a SELECT for this field.
* @param string $lookup_sql
*/
function SetLookup( $lookup_sql ) {
$this->LookupSql = $lookup_sql;
}
/**
* Set the SELECT values explicitly, if they are not available in SQL.
*
* For example:
*
* SetOptionList(array('M' => 'Male', 'F' => 'Female', 'O' => 'Other'), 'F', array('maxwidth' => 6, 'translate' => true));
*
* This would present Male/Female/Other drop-down, when in another language the values
* would be translated (if available), e.g. in German as Männlich/Weiblich/Andere, except
* that in this case Männli/Weibli/Andere, since the values would be truncated to maxwidth.
*
* @param array $options An array of key => value pairs
* @param string $current The currently selected key
* @param string $parameters An array of parameters (maxwidth & translate are the only valid parameters)
*/
function SetOptionList( $options, $current = null, $parameters = null) {
if ( gettype($options) == 'array' ) {
$this->OptionList = '';
if ( is_array($parameters) ) {
if ( isset($parameters['maxwidth']) ) $maxwidth = max(4,intval($parameters['maxwidth']));
if ( isset($parameters['translate']) ) $translate = true;
}
foreach( $options AS $k => $v ) {
if (is_array($current)) {
$selected = ( ( in_array($k,$current,true) || in_array($v,$current,true)) ? ' selected="selected"' : '' );
}
else {
$selected = ( ( "$k" == "$current" || "$v" == "$current" ) ? ' selected="selected"' : '' );
}
if ( isset($translate) ) $v = translate( $v );
if ( isset($maxwidth) ) $v = substr( $v, 0, $maxwidth);
$this->OptionList .= "<option value=\"".htmlspecialchars($k)."\"$selected>".htmlspecialchars($v)."</option>";
}
}
else {
$this->OptionList = $options;
}
}
function GetTarget() {
if ( $this->Sql == "" ) return $this->Field;
return "$this->Sql AS $this->Field";
}
/**
* Add some kind of attribute to this field, such as a 'class' => 'fancyinputthingy'
*
* @param string $k The attribute name
* @param string $v The attribute value
*/
function AddAttribute( $k, $v ) {
$this->Attributes[$k] = $v;
}
/**
* Render a LABEL around something. In particular it is useful to render a label around checkbox fields to include their labels and make them clickable.
*
* The label value itself must be in the '_label' attribute, and the field must also have an 'id' attribute.
*
* @param string $wrapme The rendered field to be wrapped
* @return string
*/
function RenderLabel( $wrapme ) {
if ( !isset($this->Attributes['_label']) || !isset($this->Attributes['id'])) return $wrapme;
$class = (isset($this->Attributes['class']) ? $this->Attributes['class'] : 'entry');
$title = (isset($this->Attributes['title']) ? ' title="'.str_replace('"', ''', $this->Attributes['title']) . '"' : '');
return( sprintf( '<label for="%s" class="%s"%s>%s %s</label>',
$this->Attributes['id'], $class, $title, $wrapme, $this->Attributes['_label']) );
}
/**
* Render the array of attributes for inclusion in the input tag.
* @return string
*/
function RenderAttributes() {
$attributes = "";
if ( count($this->Attributes) == 0 ) return $attributes;
foreach( $this->Attributes AS $k => $v ) {
if ( $k == '_label' ) continue;
$attributes .= " $k=\"" . str_replace('"', ''', $v) . '"';
}
return $attributes;
}
}
/**
* The class for the Editor form in full
* @package awl
*/
class Editor
{
var $Title;
var $Action;
var $Fields;
var $OrderedFields;
var $BaseTable;
var $Joins;
var $Where;
var $NewWhere;
var $Order;
var $Limit;
var $Query;
var $Template;
var $RecordAvailable;
var $Record;
var $SubmitName;
var $Id;
/**
* Constructs an editor widget, with a title and fields.
*
* The second parameter maybe passed as a string, to be interpreted as the name of a table, from
* which all fields will be included, or as an array of specific fields, in which case you should
* make sure to call SetBaseTable('tablename') so the editor knows where to find those fields!
*
* @param string $title
* @param array or string $fields See above
*/
function __construct( $title = "", $fields = null ) {
global $c, $session, $form_id_increment;
$this->Title = $title;
$this->Order = "";
$this->Limit = "";
$this->Template = "";
$this->RecordAvailable = false;
$this->SubmitName = 'submit';
$form_id_increment = (isset($form_id_increment)? ++$form_id_increment : 1);
$this->Id = 'editor_'.$form_id_increment;
if ( isset($fields) ) {
if ( is_array($fields) ) {
foreach( $fields AS $k => $v ) {
$this->AddField($v);
}
}
else if ( is_string($fields) ) {
// We've been given a table name, so get all fields for it.
$this->BaseTable = $fields;
$field_list = get_fields($fields);
foreach( $field_list AS $k => $v ) {
$this->AddField($k);
}
}
}
@dbg_error_log( 'editor', 'DBG: New editor called %s', $title);
}
/**
* Creates a new field in the Editor, possibly initialising the SQL for calculating it's
* value, and lookup_sql for use in drop-down lists.
*
* @param string $field The name for the field.
* @param string $sql The SQL for the target list. Think: "$sql AS $field"
* @param string $lookup_sql The SQL for looking up a list of possible stored values and displayed values.
*/
function &AddField( $field, $sql="", $lookup_sql="" ) {
$this->Fields[$field] = new EditorField( $field, $sql, $lookup_sql );
$this->OrderedFields[] = $field;
return $this->Fields[$field];
}
/**
* Set the SQL for this field for the target list. Think: "$sql AS $field"
* @param string $field
* @param string $sql
*/
function SetSql( $field, $sql ) {
$this->Fields[$field]->SetSql( $sql );
}
/**
* Set the SQL for looking up a list of possible stored values and displayed values.
* @param string $field
* @param string $lookup_sql
*/
function SetLookup( $field, $lookup_sql ) {
if (is_object($this->Fields[$field])) {
$this->Fields[$field]->SetLookup( $lookup_sql );
}
}
/**
* Gets the value of a field in the record currently assigned to this editor.
* @param string $value_field_name
*/
function Value( $value_field_name ) {
if ( !isset($this->Record->{$value_field_name}) ) return null;
return $this->Record->{$value_field_name};
}
/**
* Assigns the value of a field in the record currently associated with this editor.
* @param string $value_field_name
* @param string $new_value
*/
function Assign( $value_field_name, $new_value ) {
if ( !isset($this->Record) ) $this->Record = (object) array();
$this->Record->{$value_field_name} = $new_value;
}
/**
* Sets or returns the form ID used for differentiating this form from others in the page.
* @param string $id
*/
function Id( $id = null ) {
if ( isset($id) ) $this->Id = preg_replace( '#[^a-z0-9_+-]#', '', $id);
return $this->Id;
}
/**
* Set the explicit options & parameters for a list of stored/displayed values. See the
* description under EditorField::SetOptionList() for full details.
*
* @param string $field
* @param array $options A key => value array of valid store => display values.
* @param string $current The key of the current row
* @param string $parameters Set maxwidth & whether displayed values are translated.
*/
function SetOptionList( $field, $options, $current = null, $parameters = null) {
$this->Fields[$field]->SetOptionList( $options, $current, $parameters );
}
/**
* Add an attribute to this field.
* @param unknown $field
* @param unknown $k
* @param unknown $v
*/
function AddAttribute( $field, $k, $v ) {
$this->Fields[$field]->AddAttribute($k,$v);
}
/**
* Set the base table for the row query.
* @param unknown $base_table
*/
function SetBaseTable( $base_table ) {
$this->BaseTable = $base_table;
}
/**
* Set any joins
* @param unknown $join_list
*/
function SetJoins( $join_list ) {
$this->Joins = $join_list;
}
/**
* Accessor for the Title for the editor, which could set the title also.
*
* @param string $new_title The new title for the browser
* @return string The current title for the browser
*/
function Title( $new_title = null ) {
if ( isset($new_title) ) $this->Title = $new_title;
return $this->Title;
}
/**
* Set the name of the SUBMIT button
* @param unknown $new_submit
*/
function SetSubmitName( $new_submit ) {
$this->SubmitName = $new_submit;
}
function IsSubmit() {
return isset($_POST[$this->SubmitName]);
}
/**
* Magically knows whether you are in the processing the result of an update or a create.
* @return boolean
*/
function IsUpdate() {
$is_update = $this->Available();
if ( isset( $_POST['_editor_action']) && isset( $_POST['_editor_action'][$this->Id]) ) {
$is_update = ( $_POST['_editor_action'][$this->Id] == 'update' );
@dbg_error_log( 'editor', 'Checking update: %s => %d', $_POST['_editor_action'][$this->Id], $is_update );
}
return $is_update;
}
/**
* The opposite of IsUpdate. Really.
* @return boolean
*/
function IsCreate() {
return ! $this->IsUpdate();
}
/**
* Set the row selection criteria
* @param unknown $where_clause
*/
function SetWhere( $where_clause ) {
$this->Where = $where_clause;
}
/**
* Set the criteria used to find the new row after it got created.
* @param unknown $where_clause
*/
function WhereNewRecord( $where_clause ) {
$this->NewWhere = $where_clause;
}
/**
* Append more stuff to the WHERE clause
* @param unknown $operator
* @param unknown $more_where
*/
function MoreWhere( $operator, $more_where ) {
if ( $this->Where == "" ) {
$this->Where = $more_where;
return;
}
$this->Where = "$this->Where $operator $more_where";
}
function AndWhere( $more_where ) {
$this->MoreWhere("AND",$more_where);
}
function OrWhere( $more_where ) {
$this->MoreWhere("OR",$more_where);
}
/**
* Set this to be the form display template. It's better to use Layout($template) in general.
*
* @deprecated
* @param string $template
*/
function SetTemplate( $template ) {
deprecated('Editor::SetTemplate');
$this->Template = $template;
}
/**
* Like SetTemplate($template) except it surrounds the template with a ##form## ... </form> if
* there is not a form already in the template.
*
* @param string $template
*/
function Layout( $template ) {
if ( strstr( $template, '##form##' ) === false && stristr( $template, '<form' ) === false )
$template = '##form##' . $template;
if ( stristr( $template, '</form' ) === false ) $template .= '</form>';
$this->Template = $template;
}
/**
* Returns 'true' if we have read a row from the database (or set one through SetRecord()), 'false' otherwise.
*
* @return boolean
*/
function Available( ) {
return $this->RecordAvailable;
}
/**
* Set a database row to load the field values from.
*
* @param object $row
* @return object The row that was passed in.
*/
function SetRecord( $row ) {
$this->Record = $row;
$this->RecordAvailable = is_object($this->Record);
return $this->Record;
}
/**
* Set some particular values to the ones from the array.
*
* @param array $values An array of fieldname / value pairs
*/
function Initialise( $values ) {
$this->RecordAvailable = false;
if ( !isset($this->Record) ) $this->Record = (object) array();
foreach( $values AS $fname => $value ) {
$this->Record->{$fname} = $value;
}
}
/**
* This will assign $_POST values to the internal Values object for each
* field that exists in the Fields array.
*/
function PostToValues( $prefix = '' ) {
foreach ( $this->Fields AS $fname => $fld ) {
@dbg_error_log( 'editor', ":PostToValues: %s => %s", $fname, $_POST["$prefix$fname"] );
if ( isset($_POST[$prefix.$fname]) ) {
$this->Record->{$fname} = $_POST[$prefix.$fname];
@dbg_error_log( 'editor', ":PostToValues: %s => %s", $fname, $_POST["$prefix$fname"] );
}
}
}
/**
* Read the record from the database, optionally overriding the WHERE clause.
*
* @param string $where (optional) An SQL WHERE clause to override any previous SetWhere call.
* @return object The row that was read from the database.
*/
function GetRecord( $where = "" ) {
global $session;
$target_fields = "";
foreach( $this->Fields AS $k => $column ) {
if ( $target_fields != "" ) $target_fields .= ", ";
$target_fields .= $column->GetTarget();
}
if ( $where == "" ) $where = $this->Where;
$sql = sprintf( "SELECT %s FROM %s %s WHERE %s %s %s",
$target_fields, $this->BaseTable, $this->Joins, $where, $this->Order, $this->Limit);
$this->Query = new AwlQuery( $sql );
@dbg_error_log( 'editor', "DBG: EditorGetQry: %s", $sql );
if ( $this->Query->Exec("Browse:$this->Title:DoQuery") ) {
$this->Record = $this->Query->Fetch();
$this->RecordAvailable = is_object($this->Record);
}
if ( !$this->RecordAvailable ) {
$this->Record = (object) array();
}
return $this->Record;
}
/**
* Replace parts into the form template. Parts that are replaceable are listed below:
* ##form## A <form ...> tag. You should close this with </form> or use Layout($template) which will take care of it for you.
* ##submit## A <input type="submit" ...> tag for the form.
* ##f.options## A list of options explicitly specified
* ##f.select## A select list from the lookup SQL specified
* ##f.checkbox## A checkbox, perhaps with a "_label" attribute
* ##f.input## A normal input field.
* ##f.file## A file upload field.
* ##f.money## A money input field.
* ##f.date## A date input field.
* ##f.textarea## A textarea
* ##f.hidden## A hidden input field
* ##f.password## An input field for entering passwords without them being echoed to the screen
* ##f.enc## Just print the value with special chars escaped for use in URLs.
* ##f.submit## An <input type="submit" where you specify the field name.
*
* Most of these begin with "f", which should be replaced by the name of the field. Many also take an option
* after the name as well, so (for example) you can force the current value in ##options## or ##select## by
* setting ##field.select.current##. The input, file, money & date all accept the third parameter as a size
* value, so ##fieldname.date.14## would be a 14-character-wide date field. Similarly a textarea allows for
* a COLSxROWS value, so ##myfield.textarea.80x5## would be an 80-column textarea, five rows high.
*
* For ##fieldname.password.fakevalue## you can set the 'fake' value used to populate the password field so
* that you can check for this on submit to be able to tell whether the password field has been edited.
*
* Other attributes are added to the <input ...> tag based on any SetAttributes() that may have been applied.
*
* @param array $matches The matches found which preg_replace_callback is calling us for.
* @return string What we want to replace this match with.
*/
function ReplaceEditorPart($matches)
{
global $session;
// $matches[0] is the complete match
switch( $matches[0] ) {
case "##form##": /** @todo It might be nice to construct a form ID */
return sprintf('<form method="POST" enctype="multipart/form-data" class="editor" id="%s">', $this->Id);
case "##submit##":
$action = ( $this->RecordAvailable ? 'update' : 'insert' );
$submittype = ($this->RecordAvailable ? translate('Apply Changes') : translate('Create'));
return sprintf('<input type="hidden" name="_editor_action[%s]" value="%s"><input type="submit" class="submit" name="%s" value="%s">',
$this->Id, $action, $this->SubmitName, $submittype );
}
// $matches[1] the match for the first subpattern
// enclosed in '(...)' and so on
$field_name = $matches[1];
$what_part = (isset($matches[3]) ? $matches[3] : null);
$part3 = (isset($matches[5]) ? $matches[5] : null);
$value_field_name = $field_name;
if ( substr($field_name,0,4) == 'xxxx' ) {
// Sometimes we will prepend 'xxxx' to the field name so that the field
// name differs from the column name in the database. We also remove it
// when it's submitted.
$value_field_name = substr($field_name,4);
}
$attributes = "";
if ( isset($this->Fields[$field_name]) && is_object($this->Fields[$field_name]) ) {
$field = $this->Fields[$field_name];
$attributes = $field->RenderAttributes();
}
$field_value = (isset($this->Record->{$value_field_name}) ? $this->Record->{$value_field_name} : null);
switch( $what_part ) {
case "options":
$currval = $part3;
if ( ! isset($currval) && isset($field_value) )
$currval = $field_value;
if ( isset($field->OptionList) && $field->OptionList != "" ) {
$option_list = $field->OptionList;
}
else {
@dbg_error_log( 'editor', "DBG: Current=%s, OptionQuery: %s", $currval, $field->LookupSql );
$opt_qry = new AwlQuery( $field->LookupSql );
$option_list = EntryField::BuildOptionList($opt_qry, $currval, "FieldOptions: $field_name" );
$field->OptionList = $option_list;
}
return $option_list;
case "select":
$currval = $part3;
if ( ! isset($currval) && isset($field_value) )
$currval = $field_value;
if ( isset($field->OptionList) && $field->OptionList != "" ) {
$option_list = $field->OptionList;
}
else {
@dbg_error_log( 'editor', 'DBG: Current=%s, OptionQuery: %s', $currval, $field->LookupSql );
$opt_qry = new AwlQuery( $field->LookupSql );
$option_list = EntryField::BuildOptionList($opt_qry, $currval, 'FieldOptions: '.$field_name );
$field->OptionList = $option_list;
}
return '<select class="entry" name="'.$field_name.'"'.$attributes.'>'.$option_list.'</select>';
case "checkbox":
if ( !isset($field) ) {
@dbg_error_log("ERROR","Field '$field_name' is not defined.");
return "<p>Error: '$field_name' is not defined.</p>";
}
if ( $field_value === true ) {
$checked = ' CHECKED';
}
else {
switch ( $field_value ) {
case 'f':
case 'off':
case 'false':
case '':
case '0':
$checked = "";
break;
default:
$checked = ' CHECKED';
}
}
return $field->RenderLabel('<input type="hidden" value="off" name="'.$field_name.'"><input class="entry" type="checkbox" value="on" name="'.$field_name.'"'.$checked.$attributes.'>' );
case "input":
$size = (isset($part3) ? $part3 : 6);
return "<input class=\"entry\" value=\"".htmlspecialchars($field_value)."\" name=\"$field_name\" size=\"$size\"$attributes>";
case "file":
$size = (isset($part3) ? $part3 : 30);
return "<input type=\"file\" class=\"entry\" value=\"".htmlspecialchars($field_value)."\" name=\"$field_name\" size=\"$size\"$attributes>";
case "money":
$size = (isset($part3) ? $part3 : 8);
return "<input class=\"money\" value=\"".htmlspecialchars(sprintf("%0.2lf",$field_value))."\" name=\"$field_name\" size=\"$size\"$attributes>";
case "date":
$size = (isset($part3) ? $part3 : 10);
return "<input class=\"date\" value=\"".htmlspecialchars($field_value)."\" name=\"$field_name\" size=\"$size\"$attributes>";
case "textarea":
list( $cols, $rows ) = explode( 'x', $part3);
return "<textarea class=\"entry\" name=\"$field_name\" rows=\"$rows\" cols=\"$cols\"$attributes>".htmlspecialchars($field_value)."</textarea>";
case "hidden":
return sprintf( "<input type=\"hidden\" value=\"%s\" name=\"$field_name\">", htmlspecialchars($field_value) );
case "password":
return sprintf( "<input type=\"password\" value=\"%s\" name=\"$field_name\" size=\"10\">", htmlspecialchars($part3) );
case "encval":
case "enc":
return htmlspecialchars($field_value);
case "submit":
$action = ( $this->RecordAvailable ? 'update' : 'insert' );
return sprintf('<input type="hidden" name="_editor_action[%s]" value="%s"><input type="submit" class="submit" name="%s" value="%s">',
$this->Id, $action, $this->SubmitName, $value_field_name );
default:
return str_replace( "\n", "<br />", $field_value );
}
}
/**
* Render the templated component. The heavy lifting is done by the callback...
*/
function Render( $title_tag = null ) {
@dbg_error_log( 'editor', "classEditor", "Rendering editor $this->Title" );
if ( $this->Template == "" ) $this->DefaultTemplate();
$html = sprintf('<div class="editor" id="%s">', $this->Id);
if ( isset($this->Title) && $this->Title != "" ) {
if ( !isset($title_tag) ) $title_tag = 'h1';
$html = "<$title_tag>$this->Title</$title_tag>\n";
}
// Stuff like "##fieldname.part## gets converted to the appropriate value
$replaced = preg_replace_callback("/##([^#.]+)(\.([^#.]+))?(\.([^#.]+))?##/", array(&$this, "ReplaceEditorPart"), $this->Template );
$html .= $replaced;
$html .= '</div>';
return $html;
}
/**
* Write the record. You might want to consider calling Editor::WhereNewRecord() before this if it might be creating a new record.
* @param boolean $is_update Explicitly tell the write whether it's an update or insert. Generally it should be able to figure it out though.
*/
function Write( $is_update = null ) {
global $c, $component;
@dbg_error_log( 'editor', 'DBG: Writing editor %s', $this->Title);
if ( !isset($is_update) ) {
if ( isset( $_POST['_editor_action']) && isset( $_POST['_editor_action'][$this->Id]) ) {
$is_update = ( $_POST['_editor_action'][$this->Id] == 'update' );
}
else {
/** @todo Our old approach will not work for translation. We need to have a hidden field
* containing the submittype. Probably we should add placeholders like ##form##, ##script## etc.
* which the editor can use for internal purposes.
*/
// Then we dvine the action by looking at the submit button value...
$is_update = preg_match( '/(save|update|apply)/i', $_POST[$this->SubmitName] );
dbg_error_log('WARN', $_SERVER['REQUEST_URI']. " is using a deprecated method for controlling insert/update" );
}
}
$this->Action = ( $is_update ? "update" : "create" );
$qry = new AwlQuery( sql_from_post( $this->Action, $this->BaseTable, "WHERE ".$this->Where ) );
if ( !$qry->Exec("Editor::Write") ) {
$c->messages[] = "ERROR: $qry->errorstring";
return 0;
}
if ( $this->Action == "create" && isset($this->NewWhere) ) {
$this->GetRecord($this->NewWhere);
}
else {
$this->GetRecord($this->Where);
}
return $this->Record;
}
}
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