In Vaadin Flow 23.1.x we have a grid with different filter fields in the header.
In the screen below the "Vendorstatus" is a ComboBox and the ValudateCode is a Select component.
What we now see:
If we click in the Vedonrstatus field, the dropdown opens and nothing else happens, which is ok
If we click in the ValutaCode field, the dropdown opens too, but also the "Sort" of the grid is triggered.
So it looks like the select component does not consume/block the ClickEvent from propagating down to the parent components.
Is there a way to prevent the click to trigger the sort of the column grid?
Workarround would be to re-implement my Select based header filter with ComboBox type ones.
The code to generate the filter header:
headerRow.getCell(col).setComponent(createSelectFilter(...));
And the createSelectFilter method:
private static Component createSelectFilter(...) {
VerticalLayout vl= new VerticalLayout();
Label l= new Label("Headername");
vl.add(l);
Select<MyobjClass> select= new Select<>();
select.setItems(...);
select.getElement().addEventListener("click",
event -> {})
.addEventData("event.stopPropagation()");
select.addValueChangeListener( e --> updateDataFilter());
vl add(select);
return vl;
}
This does not stop propagation of the click to open the dropdown and select a value to also trigger a sort "command" on that column
You must use this method to add the listener them you can
select.getElement().addEventListener("click",
event -> ...)
.addEventData("event.stopPropagation()");
I am loading the data in select2 dropdown on page load. On the UI I can see the dropdown being populated but when I clear the dropdown value and reload the value again, it is not getting populated, though I can see the data is available in the dropdown.
I have tried to use val() and then trigger the change. It did not change the value. I have verified that the value which is passed to the dropdown has the value in the dropdown list.
This is how I am trying to assign the value - $('#s1').val(v.Name);
This is how I am clearing the dropdown value - $("#s1").val("");
$scope.vendorlist = d.data;
d.data.forEach(function (v) {
vendors.push({ id: v.Id, text: v.Name });
});
$('#s1').select2({
placeholder: 'Select a field',
data: vendors,
}).on('select2:select', function (e) {
});
The dropdown should show the passed value in the dropdownbox.
I have following code:
var
cbMyCombo: TcxLookupComboBox;
I have a dataset which has following query:
SELECT ID, NAME from MYTABLE;
This query works fine.
Now I have done binding in cbMyCombo in DFM file as following:
object cbMyCombo: TcxLookupComboBox
Properties.KeyFieldNames = 'ID'
Properties.ListColumns = <
item
FieldName = 'NAME'
end>
end
It works fine and combobox is binded. My problem is, nothing is selected by default. I want that initially combobox should contain "View All" option.
I am trying like this:
cbMyCombo.Text := 'View All'
But, this is not setting anything because "View All" is not the part of the list which I have binded to it. I want to manually add "View All" as FieldName and 0 as KeyFieldName and this should be selected by default. How can I do this?
You should add the 'View all', 0 row to your dataset and set the EditValue of your combobox to 0 in your intialization.
Select2 loads all items from my list successful, the issue I found when try to select a specific value when page loads. Example:
:: put select2 in a specific html element, no value is selected even all items are loaded.
$('#my_id').select2();
:: When the page is loaded I'm trying to show a specific item selected, but doesn't work as expected, because even selected, the select2 doesn't show it.
$('#my_id').val('3'); //select the right option, but doesn't render it on page loads.
How to make a selected option to pop up when pages loads?
Thanks in advance.
#UPDATED
:: How I load all select2 items (sorry, its jade, not pure HTML):
label(for='category') Category
span.required *
select(id='category', style='width:230px', name='category')
option(value='') - Select -
each cat in categories
option(value='#{cat.id}') #{cat.description}
P.S.: All items from my list are loaded.
:: How I initialize the select2:
Just put the following line code on my javascript and it does successful:
$('#category').select2();
:: How I'm trying to select a specific value:
First attempt:
$('#category').select2(
{
initSelection: function(element, callback) {
callback($('#field-category').val());
}
}
);
Second attempt:
$('#category').val($('#field-category').val());
P.S.: #field-category has a value its a hidden input field and works OK.
You need to use the initSelection option to set the initial value.
If you are using a pre-defined select element to create the select2, you can use the following method
$('select').select2().select2('val','3')
Demo: Fiddle
add a trigger change after setting val:
$('#my_id').val('3').trigger('change');
A very simple way to tackle this problem is :
//Step1: Here assuming id of your selectbox is my_id, so this will add selected attribute to 1st option
$('#my_id option').eq(0).prop('selected',true);
//Step2: Now reinitialize your select box
//This will work, if you haven't initialized selectbox
$('#my_id').select2();
or
//This will work, if you have initialized selectbox earlier, so destroy it first and initialise it
$('#my_id').select2('destroy').select2();
This may help:
$('#mySelect2').val('1'); // Select the option with a value of '1'
$('#mySelect2').trigger('change'); // Notify any JS components that the value changed
You can find more on details here:
Thanks
Per here initSelection is deprecated in Select2 4.0 and later.
Using Select2 4.0.0 this worked for me:
$('#my_id').select2({val:3});
HT: #Kokizzu
Here is how to make val in select2 just select the corresponding element.
For some reason, select2 doesn't provide the function to look up selections by id.
init:
$("#thing").select2({data:sources, initSelection: function(item, callback) {
// despite select2 having already read the whole sources list when you
// do .val(n) you have to explicitly tell it how to find that item again.
var to_be_selected = null;
$.each(sources, function(index, thing) {
if (thing.id == item.val()) {
to_be_selected = thing;
return;
}
})
callback(to_be_selected);
}})
normal code
// to load the thing with id==3 from the initial sources list.
$("#thing").select2({'val': 3})
For me I was sending selected in the data set still default option was not getting selected. I had to do something like below to make it work -
$(".select").select2({
data: data_names
});
data_names.forEach(function(name) {
if (name.selected) {
$(".select").select2('val', name.id);
}
});
I had a multiple select2 box with multiple selections.
Step 1 was to put my string of school_ids into an array of integers corresponding to the id of each school, and remove a leading zero. I had to do this in a separate script tag.
<script>
var school_ids = <%= raw JSON.parse(#search.school_ids).map{|x| x.to_i} - [0]%>
</script>
Step two was to create the select box, then set the values, then trigger like so:
<script>
$(document).ready(function() {
$('.select2-multiple').select2({
placeholder: "Hit Enter After Selection",
width: 'resolve'
});
$('.select2-multiple').val(school_ids);
$('.select2-multiple').trigger('change');
</script>
trigger just select2 to set the value
$('#my_id').val('3').trigger("change.select2");
and this will trigger select2 with dropdown
$('#my_id').val('3').trigger("change");
I meet with the same problem, this works for me：
Using Select2 > 4.0.0
$('#select_id').val('3').trigger('change');
var option=$(this);
if(option.val()==data.StudentCourses.CourseId)
{
option.setAttribute('Selected');
}
});
i have initilized select2 because i just want few options selected from them.
If you are using select2 v4.0.0 or above, you can check select2 documentation
// Initialize select2 for all select tags
$('select').select2();
// Initialize select2 for a specific id
$('#my-id').select2();
// Initialize select2 for a class
$('.my-class').select2();
// Update the displayed value after changing the selected option.
$('#my-id').trigger('change');
$('.classname').each(function() {
$(this).siblings().find('.select2selection__rendered').text($(this).text())
})
in my case I were dealing with a class then I used this way to set showing content at select2
<option selected value="your_value">your_text</option>
u need to put this at each select box's first option
I am working with Ext.Net 1.5. and I am working with Ext:dataview.
I want to get selected one value of dataview by default.
suggest me how is it possible??
please look at Image
Try to add following JS code:
if ({your_dataview_id}.store.data.length > 0) {
{your_dataview_id}.select(0); // Selects first element in a dataview
}
on a client side when you want to select the first element in the dataview. Just replace {your_dataview_id} with your dataview's id