I am facing an issue in my Flex application.
I am creating some array collections and storing date objects in it.In the later part of the application I will create 'advanceddatagridcolumns' with these array collections as the data sources.
Initially while creating the Array Col , I do have the 'formats' given by user, for each array collection eg. '1995/06/25' but in the later part I have no access to these formats. I want to display this dates in the data grid in same way as the user has specified. Right now, it displays it in the default format 'Sun Jun 25 00:00:00 GMT+0530 1995' instead of '1995/06/25'.
I have a common 'labelFunction' for these advancedatagridcolumns, and thus I can not use the DateFormatter as I 'formatstring' would be different for different columns.
So is there some way to display/retrieve the date in the same format as stored and not in the default way. Or while creating the date object can't I specify that I would always like it to be returned in some desired format.
The Date class in Flex as far, as my experiences go, is not very versatile. My hunch is that this is by no means possible with the regular framework capabilities.
However, if the date does not need to be changed after the user has input it, you might just want to save it as String and only create a temporary ArrayCollection of Dates for displaying them. This way you don't need to worry about the format changing because you're saving the original value.
How are you parsing the dates anyway? I mean that are you finding out the format yourself with RegExps or such, or using the parse method of the Date class?
just create a labelfunction specific to that column only and then you can use the formatstring
Related
I'm spinning my wheels right now and what I'm pretty sure is an easy answer, I just can't see at the moment. What I'm attempting to do take two sets of converted dates in a database and I want to present them in a grid view as one single date format.
Right now the two date formats are as follows:
YYYYMMDD
mon dd yyyy hh:miAM/PM
I want to convert them all into one format. For giggles, lets just convert them all to 112 (YYYYMMDD).
Now I want to present this all in the same SELECT statement that populates my gridview with other columns of data of various forms lots of text, data entry, long characters, etc.
The thing I haven't been able to wrap my head around is how to put this into a SELECT statement that includes all the rest of the information that populates the gridview.
So a normal SELECT statement (into all nvarchar(max) fields...the table is formed this way because we deal with lots of non standard data importing like Unix) would look like this (this is just a sample database):
SELECT [record_number], [price], [product], [description], [date_of_order], [customer_id] [comments]from sample_database
When presenting the 'date_of_order' field, I figured I need to use a CAST or CONVERT with the proper conversion numbers. However, after looking online I'm scratching my head on how to do this as most of the somewhat relevant information is focused around converting with the GETDATE option instead of leveraging the date that's already written to the database (the information is entered on a different part of the website).
I'm just looking for a pointer or a suggestion in the right direction to use a SELECT statement in my gridview (along with all of the other fields) that can convert any/all of the entries into one common date format. I know I'm missing something simple here but I don't know what.
I should note that I don't want to change them in the Database just when presenting them in the Gridview.
Use the following Convert SQL Function around all of the date fields you require, be warned that this can cause errors if the value is not a correctly formatted date.
CONVERT(datetime, [OldDate], 112)
Found here.
Also look here for more information on the Convert Function
We are in the process of converting a rather large PHP/MySQL project to Angular/Node.js/CouchDB. The main problem I am running into now is that our MySQL queries are rather complicated, using a lot of date functions (like DATE_DIFF, DATE_FORMAT, etc.) and I don't know how to convert them to this new architecture.
How do most devs handle those types of functions in CouchDB? Do they just pull the raw data from the database and leave all of the calculations up to the controller/front-end?
Example query:
SELECT DATE_DIFF(NOW(),table.datefrom) as how_long, DATE_FORMAT(table.datefrom,'%m/%d/%Y') as formatted_date FROM table ORDER BY datefrom
How would that query be handled with CouchDB?
Datetimes are not a "native" type in CouchDB. However, you have several good options that you can choose between depending on the situation.
You can use a "timestamp" numeric value. (either in the native milliseconds, or converted to seconds if needed) You can get a timestamp for "now" with (new Date()).valueOf().
You can also break up the parts of your datetimes into an array. ([ year, month, day, hour, minute, second ]) This will enable you to use grouping to "drill down" into increasingly specific time-frames as well as query based on individual parts of the date.
If you want date manipulation and formatting from a tested library, you can pull in a 3rd party module like moment.js as a CommonJS module that you can use in your view/show/list/etc.
I can see one potential issue with your example query above. You are basically getting a "seconds since" via DATE_DIFF(NOW(), ...). In a view function, you won't be able to use a "transient" value like NOW() since views need to remain unaffected by outside variables/conditions. However, this is solved by adding a list function that can take your view results and transform the output to have "relative" values like what you are trying to achieve, and can also receieve querystring arguments to further add dynamism to your view.
I have been reading all about converting TEXT fields into date formats and ways to use Python to create date objects but my question remains.
My table has a dateTime column that is specified as TEXT, I would like to build a constraint that forces input to be in dateTime format, but as SQLite doesn't do dates (as I would like) I haven't worked out how to do it.
My current ideas: 1. Limit number of characters
2. Set separate attributes for day, month and year and constrain their domains
3. It is silly to do this on the database side just do it in the user interface
I would appreciate your opinions on these or other options.
Thanks :)
I've been trying to solve the same issue and the method I came up with was to use the date/time functions to parse the value and check that it hasn't changed. Essentially the following:
CREATE TABLE dts_test (
dts TEXT CHECK (dts IS datetime(dts))
);
If the default format is not what you want you can use the strftime or similar to design whatever format you want, but it must be something that the built-in date and time functions can parse.
I am using the Dynamic Data framework with scaffolding. Quite nice for a small home database that I am creating.
I notice though that if I create a field in the database of type 'date' (not datetime) the value is shown in the dynamic data site as a datetime. i.e. as this,
1/1/2010 12:00am
I just want it to display 1/1/2010 as the underlying data type is just a date, and I have no need to store times too.
I have the scaffolding set up, is there some kind of attribute I can use to specify the format?
Use DataTypeAttribute(DataType.Date) as your property metadata annotation.
I have bound fields in GridView to some dateTime property of data objects. The fields are displayed to the seconds level. It looks like 2009-2-3 18:00:00 PM.
I just want it displayed to the minutes, e.g 2009-2-3 18:00.
What is the best way to do this?
Edit:
I find use DataFormatString="{0:g}" is fine for me.
The format is 2009-2-3 6:00 PM.
Although you have found a solution, here's some additional information:
You can find a list of all standard date and time format strings (such as "g") on this page in MSDN: Standard DateTime Format Strings.
And if do not want to use one of the predefined formats, there is also a page about Custom Date and Time Format Strings. For example, to get a date exactly in the format you used in your question ("2009-2-3 18:00") you could use the format string "yyyy-M-d HH:mm".
Before using a custom format string, remember that using the standard (predefined) format strings has the advantage that it automatically takes into account the current culture (regional settings). So if you want to display the date to users, probably a predefined format will be the better choice.