New to MatBlazor below
<MatDatePicker #bind-Value="#Date1"></MatDatePicker>
Want to learn how to get date, format the date and get the time
Does this one has time component?
Thanks
Just get the value from variable Date1 from your component.
Example :
<MatDatePicker #bind-Value="#Date1"></MatDatePicker>
#code{
var formattedValue = Date1.ToString("dd mm yyyy");
var dateValue = Date1.Date;
var timeValue = Date1.TimeOfDay;
}
As the current version, the control have implemented ToLocalTime() default.
Please ask 1 question at a time.
MatDatePicker is based upon mat-datepicker
Best would to look into material design and the ui components for answers to your question
Even though it is for Angular, it gets close, for example look at Angular 6 material: how to get date and time from matDatepicker?
Related
This question already has answers here:
Comparing NSDates without time component
(17 answers)
Closed 5 years ago.
I've got a Date object that holds year/month/day and hour/minute/second data. I need to drop the hour/minute/second part as it's making comparing days problematic.
The issue is that the only obvious way I see of doing it is turning the day into a String and then using a DateFormatter with yyyy/mm/dd format to turn it BACK into a Date. This seems like a waste, is it really the only way?
Thanks a lot.
Never convert dates to String and back to Date.
You are looking for the startOfDay function of Calendar:
let date = Date()
let startOfDay = Calendar.current.startOfDay(for: date)
Given a unix timestamp, how can my iOS code know if it is before or after 6am (6am = the most recent 6am that occurred)? Are there time zones involved?
Convert the unix timestamp to a Date. Then use Calendar to get the DateComponents from the Date. By default, these components will be interpreted in the user's current timezone. If you wish to interpret the date in a different timezone, set the calendar's timezone before getting the components from the date.
By looking at the desired components you can make your decision about the hour.
let date = Date(timeIntervalSince1970: someUnixTimeStamp)
let components = Calendar.current.dateComponents(in: TimeZone.current, from: date)
// look at hour as needed
There are other Calendar APIs if you just want a single component or just a smaller subset of components instead of all components from the date.
While querying data from a database I receive the hours a process is started and ended in two separate string fields for example start = "1100" and end = "+0200" which indicate it's hours of operation are from 11am-2am. What is the proper way to represent this in swift so that I can determine the amount of time left from the current time to the end time of the process.
EDIT:
I found an interesting way using the date formatter if I remove any possible prefix of + and use the below code it seems to work correctly; however, the date is not set is their a work around?
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "HHmm"
let date = dateFormatter.dateFromString("1340")
You can create NSDate from components using NSCalendar.currentCalendar().dateWithEra (there are other similar functions, look up NSCalendar for details). You will need to add some logic to determine if the 2AM is today or tomorrow etc.
Then you can compare two NSDate dates. To determine time left to the end you would probably use NSDate method timeIntervalSinceDate. You can also use NSDateComponentsFormatter to get the remaining time nicely formatted.
Before flagging this question as a duplicate, please read on.
I need to compare two NSDates. A date I get from a server with the current date.
From NSDate.date() I get this date 2014-09-25 12:48:23 +0000 which is wrong (the time part). I needed to add 5 hours to get the current time so I did the following.
let formatter = NSDateFormatter()
formatter.dateFormat = "yyyy-MM-dd hh:mm:ss ZZZZZ"
let dateString = formatter.stringFromDate(NSDate.date())
The result is the correct date - 2014-09-25 06:21:56 +05:30
But there's a little hitch. This date is a String, not a NSDate. I need it to be a NSDate object to compare it with another date.
I tried converting it back like this,
let date = formatter.dateFromString(dateString)
And I get a wrong result - 2014-09-25 00:55:53 +0000. I tried passing the date string to a new NSDateFormatter to see if that works but again I still I get the wrong date.
My question is, how can I convert this date string to a NSDate object which also retains the correct time.
Thank you.
You are thoroughly confused about NSDate.
An NSDate is a point in time. It has no time zone information. If we both call [NSDate date] right now, we will get the same NSDate, even when you are in India and I'm in the UK. That's intentional. It's the same time. The time displayed on my watch and on your watch is different, but NSDate is the same. You can't convert NSDate to an "Indian" date.
You use calendars and timezones to convert NSDates to strings that you display to a user, in the way your users expect it. That's what you have done. You got a string that makes sense to Indian users. If an Indian user types a time, you take that string and convert it to an NSDate. The NSDate will be in Universal time. If you and I both typed in the time on our watch right now and converted it, you would type a time that looks like 5 1/2 hours earlier than mine. But it's the same time. If you convert it to NSDate, we will both get the exact same NSDate.
So how do you change your NSDate? Quite simple: You don't. NSDate is absolute time, independent of your location on earth.
Upon further Googling, I came across this post. The method described in it does exactly what I want. The original code is in Objective-C and since my question is in Swift, I'm going to post its Swift translation. \
func toLocalTime() -> NSDate {
let timeZone = NSTimeZone.localTimeZone()
let seconds = timeZone.secondsFromGMTForDate(self)
return NSDate(timeInterval: Double(seconds), sinceDate: self)
}
I added these as extension methods of NSDate so you can simply call them like this.
NSDate.date().toLocalTime()
You can compare two dates using any of the following NSDate functions: compare, earlierDate, laterDate, isEqualToDate. You should not compare date strings (oh, goodness, no, think of the nightmare); convert 'date strings' into 'NSDate' as soon as inputed.
In order to compare two dates that arose from strings correctly, you'll need the date strings to be unambiguous. In practice, that requires the date to have a time zone attached. If your server isn't providing a time zone and can't be modified to provide one, then you'll be forced to assume one (which would typically be the time zone where the server is located, assuming one server).
Is this possible to evaluate the duration between a specified date on a form of a workflow, and the system date ? that what I want to do, in order to show (if this possible too) a short message if 1 day occurs since the specified date above, forbidding the transition of the status Closed to Reopened...
Thanks a lot,
Christophe
I think the Script Runner has a validator that does something like this but I can't find it. Then you could write a post function with the Script Runner. Otherwise it's back to creating a custom validator, as described in my book Practical JIRA Plugins (O'Reilly)
You can use the ScriptRunner plugin in addition with the following script in the validator section for the Reopened transition:
Date now = new Date()
Date cfDate = new Date(cfValues['YourCustomField'].getTime())
new Date(now.getYear(), now.getMonth(), now.getDate()).compareTo(cfDate) <= 0
Replace YourCustomField with the name of your custom field. This will ensure that the transition will check whether the current date is beyond the date set in the custom field, and blocks it if it is.
First of all, thank you for your answer.
It works to allow transition when dates are similar, but my purpose was modified by my responsible. He would like to allow the transition if dates are similar or if the duration between them is only 1 day or less.
Example :
System date is 09/07/2013 (Paris)
My date (dd/mm/yyyy format) Transition allowed Why
07/07/2013 NO my date is former to system date
08/07/2013 NO my date is former to system date
09/07/2013 YES my date and system date equals
10/07/2013 YES only 1 day occur between 2 dates
11/07/2013 NO 2 days occur between 2 dates
Here is the code I wrote in order to do that, but it does'nt work (maybe a Java syntax error?) :
Date now = new Date()
Date cfDate = new Date(cfValues['Date de clôture réelle de la demande'].getTime())
new Boolean(((now.getTime() - cfDate) / 86400000) <= 1) && (now.getTime() >= cfDate ))
Excuse me for my english. I'm french, and I try to improve my English.
Thanks a lot.