টেমপ্লেট:Date-mf
 | এই টেমপ্লেটটিতে সিনট্যাক্সের জটিল ব্যবহার হয়েছে।
টেমপ্লেটটিতে সম্পাদনা করার আগে আপনাকে এটির সেটাপ ও পার্সার ফাংশন সম্পর্কে ভালো ধারণা নেবার জন্য উৎসাহিত করা হচ্ছে। যদি আপনার সম্পাদনা কোনো সমস্যার সৃষ্টি করে তবে তা বাতিল করুন, কারণ টেমপ্লেটটি অনেকগুলো পাতায় ব্যবহৃত হতে পারে, যা সবখানে সমস্যার সৃষ্টি করবে। মনে রাখবেন, আপনি যদি কোনো পরীক্ষা-নিরীক্ষা করতে চান, তবে এখানে প্রয়োগ করার আগে তা সাধারণ টেমপ্লেট খেলাঘর বা আপনার ব্যবহারকারী উপপাতায় প্রয়োগ করে দেখতে পারেন। |
Function: Helper function for {{start-date}} and {{end-date}}. This template is of interest to template writers only. This template emits a dtstart or dtend date sequence as described by the hcalendar spec at the microformats community site.
Overview/Vision The main reason for existence of this template is to expose dates associated with events or people to the internet. The standards are called Microformats, and the next major release of browsers such as internet explorer and Firefox are said to allow use of this information. For example, with address or coordinate data, map icons will activate on the toolbar so that the user may see a satellite image of a place discussed in an article. Historical data might be used by a sort of google earth history- where the user can navigate not just in space, but in time. Human readable encoding of dates will make such data ubiquitous in Wikipedia, establishing it the central repository and preeminent source of semantic information on the web.
Obscure code
[সম্পাদনা]- Function #titleparts is used as a string array, so that I can pass multiple parameters from a single logic point in the front end template. Normally, this would required redundantly copying the same logic if the information were passed in multiple template parameters.
- dates in up-date is in an odd range. This is done because years below 2500 can be interpreted as time by the #time function, and because dates <100 are misinterpreted. This allows a range of 6999BC to 6999AD. We could get an extra 1000 by adding 2500 instead of 3000, but it is easier on debugging if 3000 is used. This template keeps them in a high range for safety and subtract 3000 just before outputting. BC is indicated in ISO8601 with a negative sign preceding the year (see "Annex B.1.1"। Technical Committee ISO/TC 154 | ISO8601-2004। International Organization for Standardization। পৃ. ২৭-৩৩। ৯ ডিসেম্বর ২০০৬ তারিখে মূল থেকে (pdf) আর্কাইভকৃত।). Note that as of 2009-Feb, Operator misreports this as a positive number.
- precision is implemented using #time's formatting.
- the +1 day, + 1 year stuff is for time ranges. According to spec, the time end point must be just outside the range. So that if the event goes from Monday to Wednesday, the dtend date would be Thursday. You add the unit that corresponds to the given precision.
Validating/ debugging
[সম্পাদনা]See Firefox's free Operator toolbar. Check options for debug mode. There is a nice dialog to see the emitted html and the microformats that are recognized.
Splarka gets another cookie
[সম্পাদনা]- Human readable dates are due not to any clever coding in this template. The real work is done by the amazing PHP function strtotime(). Splarka I think is the dude who exposed it in the #time ParserFunction.