Hi I am having a problem in date.
I am having a custom dateChooser.
In the dateChooser component highlights some holidays and at the same time lists the holidays in a container.
The Problem is the date I am displaying in the container is not in ascending order could some one please help.
Link for the demo application with view source enabled
http://125.22.254.206/clients/flexdemos/calendardemo/calendardemo.html
The said logic is implemented in ExtendedDateChooser.as under custome folder.
Are you trying to sort the date in the 'holidayView' vbox?
You cant compare and sort two dates. You can use the date comparison method given below (search the web to find a better one).If the control in the vbox to display holidays is a datagrid, using
<mx:DataGridColumn
headerText="Created Date"
date="createdDt"
sortCompareFunction="date_sortCompareFunc">
</mx:DataGridColumn>
in the tag attribute will result in sortedDate
private function date_sortCompareFunc(itemA:Object, itemB:Object):int
{
/* Date.parse() returns an int, but
ObjectUtil.dateCompare() expects two
Date objects, so convert String to
int to Date. */
var dateA:Date=isoToDate(itemA.createdDt);
var dateB:Date=isoToDate(itemB.createdDt);
return ObjectUtil.dateCompare(dateB, dateA);
}
private function isoToDate(value:String):Date {
var dateStr:String = value;
dateStr = dateStr.replace(/\-/g, "/");
dateStr = dateStr.replace("T", " ");
dateStr = dateStr.replace("Z", " GMT-0000");
return new Date(Date.parse(dateStr));
}
I think, you cant sort by Date.
First, I can't see the container in your app.
My way would be to parse the date in to milliseconds since 1970
parse(date:String):Number
Then you can sort it by some logic.
BR
Frank
Related
last days I have a quite hard time to convince MVC5 project to work with dates as I would like to. After intensive googling I've tried numerous attepmts to make it work properly, but without success.
Here is the problem:
I need to display and edit dates on my webpage in format dd.MM.yyyy (i.e. 15.07.2015). For editing I also need to use jquery ui datepicker. The thing here is that I've been able to successfully set that datepicker to display date in requested format, also the jquery validation is now correctly validating the date in given format. So as for UI so far so good. The problem appeared in moment, when I clicked submit button - there was an error message like:
The value '15.07.2015' is not valid for Start Date.
After brief investigation I've found that when the date is passed to server it has switched format - instead of dd.MM.yyyy the date is treated like MM.dd.yyyy. In other words the error pops up only when the day part of date is higher than 12.
Here are some highlights from my code:
In my model for date I have this:
[Required]
[Display(Name = "Start Date")]
[DataType(DataType.Date)]
[UIHint("Date")]
[DisplayFormat(DataFormatString = "{0:dd.MM.yyyy}", ApplyFormatInEditMode = true)]
public DateTime DateStarts;
Which I believe is everything I need to do to make that date display in specified format and also force users to fill the textbox with date in right format.
As given in [UIHint("Date")], I have my own template for rendering textbox for editing date. The implementation of that template is following:
#model Nullable<DateTime>
#{
DateTime dt = DateTime.Now;
if (Model != null)
{
dt = (System.DateTime)Model;
}
#Html.TextBox("", dt.ToString("dd.MM.yyyy"), new { #class = "form-control datecontrol", type = "text", data_val_date = "Field must have format dd.MM.yyyy" })
<i class="fa fa-calendar form-control-feedback lowerzindex"></i>
}
The jquery datepicker has following implementation:
$('.datecontrol').datepicker({
onClose: function () { $(this).valid(); },
minDate: "-1M",
dateFormat: "dd.mm.yy",
});
So even the datepicker knows how the format should look like.
The last component is the validation by jquery.validation:
$.validator.addMethod(
'date',
function (value, element, params) {
if (this.optional(element)) {
return true;
};
var result = false;
try {
$.datepicker.parseDate('dd.mm.yy', value);
result = true;
} catch (err) {
result = false;
}
return result;
},
''
);
I know that the date is passed to server in some culture neutral format, but I thought that when I decorated code on numerous places with the requested format, this will ensure that the conversion into that culture neutral format will be done right. Or am I missing something else ?
Thanks
Your problem lies in the fact that you have not set proper Culture for your application. Your request end-up executing under culture that has month-day-year order (probably under en-US) causing you a problem.
The easiest solution is to set set the culture that actually has day-month-year order and . as date separator in your web.config, for example:
<configuration>
<system.web>
<globalization uiCulture="de-DE" culture="de-DE" />
...
https://msdn.microsoft.com/en-us/library/bz9tc508%28v=vs.140%29.aspx
The MVC uses current culture when parsing and binding posted data to your models/parameters.
It is advised to use same date separator across entire scope - html, client, javascript, server culture, ...
I got a Problem with my DateChooser. When clicking the control directly it highlights the date as it should.
When selecting the date programmatically it won't show.
var date:Date = notification.getBody() as Date;
_view.dcMiniCalendar.selectedDate = date;
trace tells me, that date and _view.dcMiniCalendar.selectedDate carry the correct values.
I already tried to use _view.dcMiniCalendar.invalidateDisplayList() (and some other invalidate functions as well) but neither with nor without them I get that date to be shown selected in the control.
thx in advance.
x_mtd
Are you sure that notification.getBody() returns a valid date?
Mine works just fine.
<mx:DateChooser id="dateChooser" />
<s:Button click="button1_clickHandler(event)" />
protected function button1_clickHandler(event:MouseEvent):void
{
var myDate:Date = new Date(2012, 11, 21);
dateChooser.selectedDate = myDate;
}
What is the return type of notification.getBody() ? If it is a string, parse it using Date.parse()
I have an AdvancedDataGrid with a HierarchicalCollectionView as its dataProvider. When I view the grid with the dataset I'm working with, and click the header of the column I wish to sort on, everything works perfectly. It sorts it hierarchically exactly how I would expect it to.
What I want to do now is have the grid already be sorted when it is shown to the user. Is there a way to do this programatically? I can't for the life of me figure out how to do this, and clearly it's possible since the AdvancedDataGrid has this built in.
Edit - BTW, I've tried this:
var myData:HierarchicalCollectionView = new HierarchicalCollectionView(theDataSource);
// Works fine using only the line above and clicking the header to sort.
// This is the part that I tried adding:
var sort:Sort = new Sort();
sort.fields = [new SortField("startDate")];
myData.sort = sort;
myData.refresh();
This appears to do something as far as sorting goes, but it doesn't sort it in the same way as clicking the column header. "startDate" is a property of an object in theDataSource by the way.
Looks like you want to sort dates. Sort can't do that out of the box. You have to use a compareFunction.
If your objects are of type Date it's quite easy:
var sortField:SortField = new SortField("startDate");
sortField.compareFunction = ObjectUtil.dateCompare;
In case your column contains dates as strings you'll have to parse them first (code example from http://blog.flexexamples.com/2007/08/12/sorting-date-columns-in-a-datagrid/):
private function date_sortCompareFunc(itemA:Object, itemB:Object):int
{
/* Date.parse() returns an int, but
ObjectUtil.dateCompare() expects two
Date objects, so convert String to
int to Date. */
var dateA:Date = new Date(Date.parse(itemA));
var dateB:Date = new Date(Date.parse(itemB));
return ObjectUtil.dateCompare(dateA, dateB);
}
var sortField:SortField = new SortField("startDate");
sortField.compareFunction = date_sortCompareFunc;
Then just use the sortField like you did in your example. That should work fine.
You can create a new advanced data grid sort event and dispatch it on the grid after the hierarchical data is set on it (unfortunately I've had to use a callLater to give the grid time to deal with the collection internally it seems assignments to the dataProvider of the ADG are sometimes asynchronous)
var advancedDataGridEvent : AdvancedDataGridEvent = new AdvancedDataGridEvent(AdvancedDataGridEvent.SORT, false, true);
advancedDataGridEvent.columnIndex = columnIndex;
advancedDataGridEvent.dataField = dataField;
dispatchEvent(advancedDataGridEvent);
This code is from an extension of ADG so you would want the dispatchEvent to actually be on your instance of the grid if you're not creating an extension.
Also a note from the code:
//setting sortDescending=true on a column does not work as expected. so, until a solution
//is found, this works just as well. the event that is dispatch just tells the column
//to reset. so, one resorts ascending (the default), while a second resorts descending.
//however, this second is only dispatched if defaultSortDesc is true on the grid.
if (defaultSortDesc)
{
dispatchEvent(advancedDataGridEvent);
}
It dispatches the event twice to flip the sort.
I need to format the column with a currency formatter. I know how to do currency formatting I just need an example on how to implement it into the datagrid column.
No need to use an itemRenderer. Just use a labelFunction. Example:
The DataGridColumn:
<mx:DataGridColumn headerText="Total Cost" dataField="TotalCost" labelFunction="LabelFormatter"/>
LabelFormatter label function:
protected function LabelFormatter(item:Object, column:DataGridColumn):String
{
var returnLabel:String = "";
var header:String = column.headerText;
switch (header)
{
case "Total Cost":
returnLabel = currencyFormat.format(item.TotalCost.toString());
break;
}
return returnLabel;
}
The Currency Formatter:
<mx:CurrencyFormatter id="currencyFormat" precision="2" />
Or:
private function formatarValor(item:Object, coluna:DataGridColumn):String{
return realFormatter.format(item[coluna.dataField]);
}
An ActionScript based answer that doesn't require defining an additional function:
var currencyFormatter:CurrencyFormatter = new CurrencyFormatter();
var gridCol:GridColumn = new GridColumn("My Money");
gridCol.dataField = "amount";
gridCol.formatter = currencyFormatter;
From the Adobe docs, the labelFunction property is useful for performing more complex tasks, such as combining two fields from the data provider into one column. But for a simple task such as formatting currency values, the above code is sufficient.
can any one tell me the code to validate the date field in signup form(which shd also validate the leap year and no of days in each month
That depends on the input but suppose you have a string input for the whole date then you could try something like:
try
{
DateTime parsedDate = DateTime.Parse(incomingDateString);
}
catch
{
throw new Exception("Incoming Date string could not be parsed as a DateTime");
}
Alternatively if you have three integers as strings coming in from the form then you would replace the DateTime.Parse with
DateTime parsedDate = new DateTime(Int32.Parse(yearString), Int32.Parse(MonthString), Int32.Parse(DayString));
and allow the DateTime constructor take care of the details of analyzing days of month and leap years. You could be more sophisticated and use Int32.TryParse and provide more specific error messages and checks for null strings if thats what you need.
You can make sure you get a valid date by adding a calendar control or a date picker control. This will avoid having to add extra validation just to validate this field.
If you don't want to use a calendar control or date picker, you can use DateTime.Parse and place it inside a Try, Catch block.
dateString = YourDateField.Text;
try {
dateValue = DateTime.Parse(dateString);
}
catch (FormatException) {
Console.WriteLine("Unable to convert, this is not a valid date '{0}'.", dateString);
}
Hope this helps.