Developing a component for Joomla v2.5, I'm using a table with a mysql timestamp column.
One of the component's settings is the "Timezone". I don't want to use server timezone, as code will run on different servers/timezones and I want to be indepedent. So the idea is to store timestamps in mysql, and display the correct date/time according to the component's parameter. The main drawback is the timezone that mysql server uses, that make the whole situation complicated. So, is there a way to store current timestamp in an universal format in MySQL and display it in the correct way?
The ultimate goal is for the component to be able to display the correct date/time based on the component's parameter, eg. user changes the parameter on the fly, no modification on the database take place, only on the "View"
In order to display the date in the correct timezone I use this:
JHtml::date($date_from_mysql , 'd/m/Y H:i:s', $my_component_timezone_parameter)
Please share your thoughts.
try
jimport ('joomla.utilities.date');
$date = new JDate($mydate);
$curdate = $date->toFormat('%Y-%m-%d %H:%M:%S');
for timezone settings
try http://docs.joomla.org/JDate::setTimezone/1.6
http://www.webamoeba.co.uk/site/index.php/articles-joomla-date-time
or try to override the store method in your table class:
public function store($updateNulls = false)
{
// get date
$date = JFactory::getDate();
// set variable for timestamp
$this->myDate = $date->toMySQL();
return parent::store($updateNulls);
}
Related
In my application, a user can specify a date in a form, via a datepicker. Doing so, the date has this format : "2018-05-16T12:45:30Z".
Then, I want to store it in a MySql database, in a TIMESTAMP column.
Later, the user can edit his data. Consequently, the datepicker has to be initialized with the date coming from the server, previously saved.
To manage this, I created an accessor and a mutator :
public function setDateNameInputAttribute($value)
{
$this->attributes['date_name_input'] = Carbon::createFromFormat('Y-m-d\TH:i:s\Z', $value);
}
public function getDateNameInputAttribute($value)
{
return Carbon::parse($value)->format('Y-m-d\TH:i:s\Z');
}
This code works fine : my front-end reads UTC (Zulu) dates and I can insert timestamps in my database.
However, it's not perfect.
Let's say I need for whatever reason to add one hour to a stored date
$myObject = MyClass::find(1);
$theDate = $myObject->dateNameInput;
Now $theDate is a "T Z format" string, because of the accessor. I could recreate a Carbon object to do my addition, but I think this Carbon -> string -> Carbon transition would be ugly. How can I make a nice operation ?
If my applications contains a lot of input dates, with many different model names, is there a way to generalize my accessor and my mutator ?
Actually, is my first approach good ?
Thanks for reading !
Its confusing me. I've a property in my Model which is annotated with DateTime. In my Database its stored as timestamp. In Frontend I use the f:format.date viewhelper to output this property.
When I create a new record, and add f.e. 01.06.2017 10:00 in this field, in my database is stored the timestamp for 01.06.2017 08:00. In Frontend the output is correct. Until here everything is fine.
The last timechange in March lead to a + of two hours in output. I assume in October that will change again and the output will be than this: 01.06.2017 08:00.
How can I prevent this. Its definitely a problem when these dates change, because its important for the business.
How can I test what will happen in October?
The Problem occurs as TYPO3 saves times normalized as UTC. for normalization (and afterwards denormalization) it respects the timezone-settings of the server. Or settings given in LocalConfiguration.php.
Up to 6.2 there were two settings [SYS][serverTimeZone] and [SYS][phpTimeZone].
With 7.6 it is only [SYS][phpTimeZone] as the servertimezone is detected from php itself.
You now have the option to fake the timezone of your server to "UTC" by setting [SYS][phpTimeZone] to the string "UTC". In this way no times should be changed any more.
TYPO3 9.5 and newer
Use the environment (documentation)
// use TYPO3\CMS\Core\Utility\GeneralUtility;
// use TYPO3\CMS\Core\Context\Context;
$context = GeneralUtility::makeInstance(Context::class);
// Reading the current data instead of $GLOBALS
$currentTimezone = $context->getPropertyFromAspect('date', 'timezone');
$currentTstamp = $context->getPropertyFromAspect('date', 'timestamp');
$current = new DateTime('#'.$currentTstamp);
$current->setTimezone(new DateTimeZone($currentTimezone) );
In Fluid you may use a DateTime-Object:
// in PHP-ode of Viewhelper
//...
$this->registerArgument('date', 'mixed', 'Either an object implementing DateTimeInterface or a string that is accepted by DateTime constructor');
// ...
In HTML
{dateTimeObject -> f:format.date()}
<f:format.date format="d.m.Y">{dateTimeObject}</f:format.date>
i have a website available in multiple languages and i would like to know how to display the correct time zone based on the current location.
is there any function i could use or time Api?
If by current location you mean the physical timezone of the user's machine, you can just use Javascript's Date object:
myDiv.innerHTML = new Date().toString()
<div id="myDiv"></div>
If by current location you mean some arbitrary language/country that the user can select, you could also use the Date object in combination with the toLocaleString function:
myDiv.innerHTML = 'Time in Jakarta: ' + new Date().toLocaleString('en-US', {
timeZone: 'Asia/Jakarta'
})
<div id='myDiv'></div>
There are a lot of functions/methods that you can use, i think the best thing to start with is to check out & experiment with what's listed in the Date object reference.
Thanks to outsourced development, each row in many of my tables has an undocumented field called ts with values such as 1428881039. This is in addition to an actual created_at timestamp field with values such as 2015-04-12 17:23:59 MDT.
These values are passed to this function before displaying it on the web page:
public static function display($ts, $created_at, $format = self::FORMAT_DETAILS){
if ($ts && Session::has('tz_offset')){
$adminTzOffset = Session::get('tz_offset');
$final = (int)$ts - (int)$adminTzOffset;
return date($format, $final);
}else{
return $created_at;
}
}
I understand that it has something to do with possibly making sure that the date shown is for the user's correct timezone, but it doesn't even seem to work; it ends up showing the wrong time. Obviously I could just display the created_at timestamp, but I understand what this is trying to do here.
Any ideas of what this ts field represents?
Based on the info garnered from the comments, I would say that the ts field is an attempt to record UTC time - since it appears it is 6 hours ahead of your created_at field.
The code itself looks like it is using this $ts value to calculate a corrected timezone based off a session variable. If you're getting incorrect times, maybe the logged in user has an incorrect timezone setup?
I created a service and callResponder (Via Generate Service Call and Generate Form in Flash Builder 4) that query a MySQL database for a name and a birth date.
My problem is so simple I guess but I haven't been able to find the solution...
When I have an empty date in MySQL (0000-00-00), my binded DateField indicates 1899-11-30
I tried almost everything possible... A custom labelFunction, a custom function called straight after the call to my service to try to handle my data like this.. :
protected function parseDate(date:Date):void
{
if (date.getFullYear() == -1) {
friendbirthdate.selectedDate = null;
} else {
var df:DateFormatter = new DateFormatter;
df.formatString = 'YYYY-MM-DD';
friendbirthdate.selectedDate = date;
}
}
Unfortunately, this works only partially. When I try to update this same form in the database I get disconnected. I'm missing something here and would greatly appreciate a tip or two :-)
THANKS!
I recommend that you store NULL for unknown dates, as opposed to '0000-00-00'. NULL is a more accurate value in this case.
If you want to store it as NULL and display it as a different value you can do something like this:
SELECT COALESCE(date_column,'0000-00-00') as formatted_date
FROM your_table
Don't know if it will help somebody but I had trouble to insert values from a form, containing a DateField. That Form has been generated through the Flash Builder Generate Form tool.
The problem is that the service generated by Flash Builder expect a Date Object, no matter what... If you submit the form without selecting a date in the DateField, the service call crashes.
Let's have a look at a part of the generated sample service (Create and Update functions), we can see that PHP is expecting to transform a Date Object to a String like this :
mysqli_stmt_bind_param($stmt, 'sss', $item->friendname, $item->friendlastname, $item->friendbirth->toString('YYYY-MM-dd HH:mm:ss'));
First of all, be sure that your Date field in MySQL has as NULL default value.
Then alter the create and update functions like this :
if ($item->friendbirth == null)
$friendbirth = null;
else
$friendbirth = $item->friendbirth->toString('yyyy-MM-dd HH:mm:ss');
mysqli_stmt_bind_param($stmt, 'sss', $item->friendname, $item->friendnickname, $friendbirth);
This way, the service call script won't try to do kinda null->toString('...')