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- added support for 1:N relations to history logging

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--> added documentation for 1:N relations and general usage
- created a public method to determine if a record is changed,
  which can be called before an application to determine if
  saving is necessary (it's result can then be passed on to
  bo_tracking::track() to not compute the changed fields again)
This commit is contained in:
Ralf Becker 2009-08-21 12:57:12 +00:00
parent ff7aff5207
commit fdbf3b207b
2 changed files with 219 additions and 34 deletions
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187
etemplate/inc/class.bo_tracking.inc.php
View File

@ -6,7 +6,7 @@
* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
* @package etemplate
* @subpackage api
* @copyright (c) 2007/8 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
* @copyright (c) 2007-9 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @version $Id$
*/
@ -22,6 +22,51 @@
* 3. implement the required methods: get_config, get_details
* 4. optionally re-implement: get_title, get_subject, get_body, get_attachments, get_link, get_notification_link, get_message
* They are all documented in this file via phpDocumentor comments.
*
* Translate field-name to history status field:
* As history status was only char(2) prior to EGroupware 1.6, a mapping was necessary.
* Now it's varchar(64) and a mapping makes no sense for new applications, just list
* all fields to log as key AND value!
*
* History login supports now 1:N relations on a base record. To use that you need:
* - to have the 1:N relation as array of arrays with the values of that releation, eg:
* $data = array(
* 'id' => 123,
* 'title' => 'Something',
* 'date' => '2009-08-21 14:42:00',
* 'participants' => array(
* array('account_id' => 15, 'name' => 'User Hugo', 'status' => 'A', 'quantity' => 1),
* array('account_id' => 17, 'name' => 'User Bert', 'status' => 'U', 'quantity' => 3),
* ),
* );
* - set field2history as follows
* $field2history = array(
* 'id' => 'id',
* 'title' => 'title',
* 'participants' => array('uid','status','quantity'),
* );
* - set content for history log widget:
* $content['history'] = array(
* 'id' => 123,
* 'app' => 'calendar',
* 'status-widgets' => array(
* 'title' => 'label', // no need to set, as default is label
* 'date' => 'datetime',
* 'participants' = array(
* 'select-account',
* array('U' => 'Unknown', 'A' => 'Accepted', 'R' => 'Rejected'),
* 'integer',
* ),
* ),
* );
* - set lables for history:
* $sel_options['status'] = array(
* 'title' => 'Title',
* 'date' => 'Starttime',
* 'participants' => 'Participants: User, Status, Quantity', // a single label!
* );
*
* The above is also an example for using regular history login in EGroupware (by skipping the 'participants' key).
*/
abstract class bo_tracking
{
@ -57,7 +102,7 @@ abstract class bo_tracking
*/
var $check2pref;
/**
* Translate field-name to 2-char history status
* Translate field-name to history status field (see comment in class header)
*
* @var array
*/
@ -125,6 +170,12 @@ abstract class bo_tracking
*/
var $html_content_allow = false;
/**
* Separator for 1:N relations
*
*/
const ONE2N_SEPERATOR = '~|~';
/**
* Constructor
*
@ -153,7 +204,7 @@ abstract class bo_tracking
* @param array $old=null old/last state of the entry or null for a new entry
* @return mixed
*/
function get_config($name,$data,$old=null)
protected function get_config($name,$data,$old=null)
{
return null;
}
@ -165,9 +216,10 @@ abstract class bo_tracking
* @param array $old=null old/last state of the entry or null for a new entry
* @param int $user=null user who made the changes, default to current user
* @param boolean $deleted=null can be set to true to let the tracking know the item got deleted or undelted
* @return int/boolean false on error, integer number of changes logged or true for new entries ($old == null)
* @param array $changed_fields=null changed fields from ealier call to $this->changed_fields($data,$old), to not compute it again
* @return int|boolean false on error, integer number of changes logged or true for new entries ($old == null)
*/
function track($data,$old=null,$user=null,$deleted=null)
public function track(array $data,array $old=null,$user=null,$deleted=null,array $changed_fields=null)
{
$this->user = !is_null($user) ? $user : $GLOBALS['egw_info']['user']['account_id'];
@ -175,7 +227,7 @@ abstract class bo_tracking
if ($old && $this->field2history)
{
$changes = $this->save_history($data,$old,$deleted);
$changes = $this->save_history($data,$old,$deleted,$changed_fields);
}
// do not run do_notifications if we have no changes
if ($changes && !$this->do_notifications($data,$old,$deleted))
@ -192,26 +244,110 @@ abstract class bo_tracking
* @param array $data current entry
* @param array $old=null old/last state of the entry or null for a new entry
* @param boolean $deleted=null can be set to true to let the tracking know the item got deleted or undelted
* @param array $changed_fields=null changed fields from ealier call to $this->changed_fields($data,$old), to not compute it again
* @return int number of log-entries made
*/
function save_history($data,$old,$deleted=null)
protected function save_history(array $data,array $old=null,$deleted=null,array $changed_fields=null)
{
$changes = 0;
foreach($this->field2history as $name => $status)
{
if ($old[$name] != $data[$name] && !(!$old[$name] && !$data[$name]))
if (is_null($changed_fields))
{
$changed_fields = self::changed_fields($data,$old);
}
if (!$changed_fields) return 0;
if (!is_object($this->historylog) || $this->historylog->user != $this->user)
{
$this->historylog = new historylog($this->app,$this->user);
}
foreach($changed_fields as $name)
{
$status = $this->field2history[$name];
if (is_array($status)) // 1:N relation --> remove common rows
{
self::compact_1_N_relation($data[$name],$status);
self::compact_1_N_relation($old[$name],$status);
$added = array_diff($data[$name],$old[$name]);
$removed = array_diff($old[$name],$data[$name]);
$n = max(array(count($added),count($removed)));
for($i = 0; $i < $n; ++$i)
{
$this->historylog->add($name,$data[$this->id_field],$added[$i],$removed[$i]);
}
}
else
{
$this->historylog->add($status,$data[$this->id_field],
is_array($data[$name]) ? implode(',',$data[$name]) : $data[$name],
is_array($old[$name]) ? implode(',',$old[$name]) : $old[$name]);
++$changes;
}
}
return $changes;
return count($changed_fields);
}
/**
* Compute changes between new and old data
*
* Can be used to check if saving the data is really necessary or user just pressed save
*
* @param array $data
* @param array $old=null
* @return array of keys with different values in $data and $old
*/
public function changed_fields(array $data,array $old=null)
{
if (is_null($old)) return array_keys($data);
$changed_fields = array();
foreach($this->field2history as $name => $status)
{
if (is_array($status)) // 1:N relation
{
self::compact_1_N_relation($data[$name],$status);
self::compact_1_N_relation($old[$name],$status);
}
if ($old[$name] != $data[$name] && !(!$old[$name] && !$data[$name]))
{
// normalize arrays, we do NOT care for the order of multiselections
if (is_array($data[$name]) || is_array($old[$name]))
{
if (!is_array($data[$name])) $data[$name] = explode(',',$data[$name]);
if (!is_array($old[$name])) $old[$name] = explode(',',$old[$name]);
if (count($data[$name]) == count($old[$name]))
{
sort($data[$name]);
sort($old[$name]);
if ($data[$name] == $old[$name]) continue;
}
}
$changed_fields[] = $name;
}
}
return $changed_fields;
}
/**
* Compact (spezified) fields of a 1:N relation into an array of strings
*
* @param array $rows rows of the 1:N relation
* @param array $cols field names as values
*/
private static function compact_1_N_relation(array &$rows,array $cols)
{
if (empty($rows)) $rows = array();
if (!is_array($rows))
{
throw new egw_exception_assertion_failed(__METHOD__.'('.array2string($rows).','.array2string($cols).') $rows is NO array!');
}
foreach($rows as $key => &$row)
{
$values = array();
foreach($cols as $col)
{
$values[] = $row[$col];
}
$row = implode(self::ONE2N_SEPERATOR,$values);
}
}
/**
@ -223,7 +359,7 @@ abstract class bo_tracking
* @param boolean $deleted=null can be set to true to let the tracking know the item got deleted or undelted
* @return boolean true on success, false on error (error messages are in $this->errors)
*/
function do_notifications($data,$old,$deleted=null)
protected function do_notifications($data,$old,$deleted=null)
{
$this->errors = $email_sent = array();
@ -322,7 +458,7 @@ abstract class bo_tracking
* @param boolean $assignment_changed=true the assignment of the user $user_or_lang changed
* @return boolean true on success or false on error (error-message is in $this->errors)
*/
function send_notification($data,$old,$email,$user_or_lang,$check=null,$assignment_changed=true)
protected function send_notification($data,$old,$email,$user_or_lang,$check=null,$assignment_changed=true)
{
//error_log("bo_trackering::send_notification(,,'$email',$user_or_lang,$check)");
if (!$email) return false;
@ -393,9 +529,10 @@ abstract class bo_tracking
*
* @param int $timestamp
* @param boolean $do_time=true true=allways (default), false=never print the time, null=print time if != 00:00
* @todo implement timezone handling via 'tz' pref
* @return string
*/
function datetime($timestamp,$do_time=true)
protected function datetime($timestamp,$do_time=true)
{
if (is_null($do_time))
{
@ -420,7 +557,7 @@ abstract class bo_tracking
* @param bool $prefer_id returns the userid rather than email
* @return string or userid
*/
function get_sender($data,$old,$prefer_id=false)
protected function get_sender($data,$old,$prefer_id=false)
{
$sender = $this->get_config('sender',$data,$old);
//echo "<p>bo_tracking::get_sender() get_config('sender',...)='".htmlspecialchars($sender)."'</p>\n";
@ -451,7 +588,7 @@ abstract class bo_tracking
* @param array $old
* @return string
*/
function get_title($data,$old)
protected function get_title($data,$old)
{
return egw_link::title($this->app,$data[$this->id_field]);
}
@ -465,7 +602,7 @@ abstract class bo_tracking
* @param array $old
* @return string
*/
function get_subject($data,$old)
protected function get_subject($data,$old)
{
return egw_link::title($this->app,$data[$this->id_field]);
}
@ -479,7 +616,7 @@ abstract class bo_tracking
* @param array $old
* @return string
*/
function get_message($data,$old)
protected function get_message($data,$old)
{
return '';
}
@ -494,7 +631,7 @@ abstract class bo_tracking
* @param string $allow_popup=false if true return array(link,popup-size) incl. session info an evtl. partial url (no host-part)
* @return string/array string with link (!$allow_popup) or array(link,popup-size), popup size is something like '640x480'
*/
function get_link($data,$old,$allow_popup=false)
protected function get_link($data,$old,$allow_popup=false)
{
if (($link = $this->get_config('link',$data,$old)))
{
@ -534,7 +671,7 @@ abstract class bo_tracking
* @param array $old
* @return array with link
*/
function get_notification_link($data,$old)
protected function get_notification_link($data,$old)
{
if($view = egw_link::view($this->app,$data[$this->id_field])) {
return array( 'text' => $this->get_title($data,$old),
@ -554,7 +691,7 @@ abstract class bo_tracking
* @param boolean $integrate_link to have links embedded inside the body
* @return string
*/
function get_body($html_email,$data,$old,$integrate_link = true)
protected function get_body($html_email,$data,$old,$integrate_link = true)
{
$body = '';
if ($html_email)
@ -600,7 +737,7 @@ abstract class bo_tracking
* @param string $link=null
* @return string
*/
function format_line($html_mail,$type,$modified,$line,$link=null)
protected function format_line($html_mail,$type,$modified,$line,$link=null)
{
$content = '';
@ -680,7 +817,7 @@ abstract class bo_tracking
* @param array $old
* @return array with values for either 'content' or 'path' and optionally 'mimetype', 'filename' and 'encoding'
*/
function get_attachments($data,$old)
protected function get_attachments($data,$old)
{
return array();
}

58
etemplate/inc/class.historylog_widget.inc.php
View File

@ -20,6 +20,10 @@
* - 'status-widgets' array with status-values as key and widget names or array with select-options as value,
* all not set stati are displayed via a label-widget - just as text
* You can set $sel_options['status'] to translate the status-values to meaningful labels.
* If status is already used for a field, you can also set options to an other name, eg. 'labels' or 'fields'
*
* If you have a 1:N relation the 'status-widget' entry should be an array with widget types as values (corresponding
* to order and fields used in bo_tracking's field2history array).
*
* @package etemplate
* @subpackage extensions
@ -41,19 +45,51 @@ class historylog_widget
// 'historylog-helper' => '',
);
/**
* pre-processing of the history logging extension
*
* @param string $name form-name of the control
* @param mixed &$value value / existing content, can be modified
* @param array &$cell array with the widget, can be modified for ui-independent widgets
* @param array &$readonlys names of widgets as key, to be made readonly
* @param mixed &$extension_data data the extension can store persisten between pre- and post-process
* @param object &$tmpl reference to the template we belong too
* @return boolean true if extra label is allowed, false otherwise
*/
function pre_process($name,&$value,&$cell,&$readonlys,&$extension_data,&$tmpl)
{
$status_widgets =& $GLOBALS['egw_info']['flags']['etemplate']['historylog-helper'];
static $status_widgets;
if ($cell['type'] == 'historylog-helper')
{
if (empty($value) && (string)$value !== '0')
{
$cell = etemplate::empty_cell();
return true;
}
//echo $value.'/'.$cell['size']; _debug_array($status_widgets);
$cell = array('type' => isset($status_widgets[$cell['size']]) ? $status_widgets[$cell['size']] : 'label','readonly' => true);
if (is_array($cell['type']))
$type = isset($status_widgets[$cell['size']]) ? $status_widgets[$cell['size']] : 'label';
$cell = etemplate::empty_cell($type,$cell['name'],array('readonly' => true));
if (is_array($type))
{
if (isset($type[0])) // numeric indexed array --> multiple values of 1:N releation
{
$cell['type'] = 'vbox';
$cell['size'] = '0,,0,0';
$value = explode(bo_tracking::ONE2N_SEPERATOR,$value);
foreach($type as $n => $t)
{
$child = etemplate::empty_cell($t,$cell['name']."[$n]",array('readonly' => true,'no_lang' => true));
etemplate::add_child($cell,$child);
unset($child);
}
}
else
{
$cell['sel_options'] = $cell['type'];
$cell['type'] = 'select';
}
}
if ($cell['type'] == 'label') $cell['no_lang'] = 'true';
return true;
}
@ -80,14 +116,26 @@ class historylog_widget
$tpl->new_cell(1,'label','New value');
$tpl->new_cell(1,'label','Old value');
$status = 'status';
// allow to set a diffent name for status (field-name), eg. because status is already used for something else
if (!empty($cell['size']) && isset($tmpl->sel_options[$cell['size']]))
{
$status = $cell['size'];
foreach($value as &$row)
{
$row[$status] = $row['status'];
}
}
if ($value) // autorepeated data-row only if there is data
{
$tpl->new_cell(2,'date-time','','${row}[user_ts]',array('readonly' => true));
$tpl->new_cell(2,'select-account','','${row}[owner]',array('readonly' => true));
// if $sel_options[status] is set, use them and a readonly selectbox
if (isset($tmpl->sel_options['status']))
if (isset($tmpl->sel_options[$status]))
{
$tpl->new_cell(2,'select','','${row}[status]',array('readonly' => true));
$tpl->new_cell(2,'select','','${row}['.$status.']',array('readonly' => true));
}
else
{