Develop Reference

Vue- How can I control the behavior of chips in v-autocomplete?

I have a 20-25 names coming from API where I'll need to show them in a drop down box (requirement). I'm using Vue v-autocomplete here to display the selected names on the field. I've used custom item called Select All where the user can select all the names in the drop down list, but what I also need to do when the user clicks on Select All is that I don't want to show all the names in the Autocomplete field including Select All Chip. Only items that are selected individually without Select All should show as Chips.
Here is my code sandbox I've attempted so far. I'm new to Vue js, so I'm hoping to get some thoughts on controlling the chips on v-autocomplete.
v-autocomplete sandbox

Instead of including "Select All" in the array of names, you can use the prepend-item slot to include a separate Select All checkbox.
If you need to differentiate between names selected via individual click and those selected via the Select All checkbox you will probably need a new property in the names array to track that, say a boolean that is true if selected one way and false the other.
You'll also need a slot like selection to customize the display of your chips where you can use v-if to conditionally render a chip based on that new boolean property.
This codesandbox I believe is pretty close to what you're after

Display dynamic items on page after initial page load

I am using ASP.Net mvc to render my html view.
The view contains a dropdown list and a label
I load drop down list using a collection in my view model.
Lets say that the collection is called fruit
IList<Fruit> fruit
Fruit is defined as
FruitId
Name
FruitType
The dropdown list will display each Fruit name and have a value of FruitId
When I change the value of the drop down list I want to have the value of my label display FruitType.
I can think of a couple ways of doing this:
Write out Label tags for all values of FruitType. Give a css class to display the first one on load and add javascript to show/hide labels in the select onchange event
Provide json array of Fruit in the html somewhere (I would serialise the Fruit list on page load and put the resulting script on the page somewhere). I would add javascript to the onchnage event of the select to search the json and change the label value accordingly.
I have 2 questions:
Am I missing something obvious, could this be done in a better way?
If no 2 is a good idea, where should I put the json in the html so that the js can use it?

Another approach is that when you generate the dropdown list, include a data-attribute, say data-fruit-type where you store the FruitType, then when the dropdown value changes, just read the data-fruit-type attribute from the selected item.

How to send value of drop down item to export plugin?

I am new in Grails. I have a drop down box and a button which generates PDF. I am able to generate and download PDF using following tag
<export:formats formats="['excel', 'pdf']" />
But, now I want to select item from drop down and pass that selected item to the export tag like below
<export:formats formats="['excel', 'pdf']" params ="Pass selected item here"/>
I tried a lot but no luck. Does anybody know how to pass selected item value of drop down to the export tag?

In your controller use flash.value = params?.value inside the appropriate method. This will allow you to store the key:value pair for one transaction only.
In the GSP page define the select box value value="${flash?.value}" and give the select box an ID.
Assuming you want to pass the variable into the business logic, in your controller use an if statement to check for the select box value and follow the appropriate logic based on each value.
Flash is a temporary key:value storage mechanism for one request only. For more information on flash check out the documentation.

How to detect change in form if added a new row in prime faces datatable

I have requirements to disable save and cancel buttons in my page on page load. I should enable save and cancel buttons if user changes something in the page. To achieve this, I am using
http://plugins.jquery.com/are-you-sure/
This plugin is working fine but there is need for customization in many scenarios, one like below
I have a page like Item groups which consists of three panels.
LeftPanel : List of item groups in the system
CenterPanel : List of items assigned to a selected item group
RightPanel : List of items to assign to an item group
Now Assume I have a datatable
<p:dataTable var="itms" value="#{myBean.listOfItems}" rows="10"
paginator="true"
paginatorTemplate="{CurrentPageReport}
{FirstPageLink}
{PreviousPageLink}
{PageLinks}
{NextPageLink}
{LastPageLink}
{RowsPerPageDropdown}"
rowsPerPageTemplate="10,50,100">
</p:dataTable>
To assign items to the item group I would select items in the right panel and click on assign button which would add to the listOfItems to show in the center panel
listOfItems.addAll(selectedItems);
I am calling rescan method defined in the plugin on assign button oncomplete to detect the changes and track new records added because I want to consider addition or removal of fields also a change.
Now on page load if an item group is selected and it has 13 items assigned then I could see the first page with 10 records. If any items added then they will be added in the list at back end list. Since I'm in first page and page is having complete rows plugin is unable to find any changes in form.
How to find a change in this scenario.

Since you say you want to consider any addition or removal of fields also a change to make sure that your users save the changes, one way to do it could be like this:
You can have a hidden input:
<h:inputHidden id="hiddenInput" />
And in your assign button oncomplete you mentioned you can add:
oncomplete="$('#hiddenInput').val('dirty').change();"
This would add the 'dirty' string (for example) to the hidden input and call change() to tell the plugin that something changed, and the plugin would mark the form as dirty (changed).
And in the oncomplete of your saving button, all you have to do is clear that value and reinitialize the plugin to start again:
oncomplete="$('#hiddenInput').val('');$('#formId').trigger('reinitialize.areYouSure');"
Also it would be good to add some checking or to do that at the end of the action (link).
NOTE: If you add and delete the same 'item', technically there aren't changes, but you want to keep the form as changed right? This solution will work for that. Correct me if I'm wrong and you want to manage this particular case. You would have to add some logic in which you compare old and new values and clear or dirty the hidden input accordingly.

Store Datatable Client side

I have attached screen shot here. http://imageshack.us/photo/my-images/836/abcpqr.png/. In my 1st 2 column there is drop down with list of items inside it. And third column is output column whose value is depends upon dropdown selected items. I am having all the combinations of 2 dropdown items and its output inside a datatable. Because of requirement i cant use server side processing.
So I want to store that output table client side. And depends on the dropdown seleceted value i want to show output from output table to 3rd column textbox. I want to achieve this using client side(Javascript/Jquery).
So please help me how to achieve this.
Thanks in advance.

you can store content at client side by html5 storage
This means you can start using the API’s sessionStorage and localStorage
here is tutorial to learn how to use
html5 storage

I got the solution. It will be useful for someone else in the future.
I have created hidden listview which contains only itemtempalte with blank span inside it. And assign class to span to differentiate each span and created custom attributes which is having desired output. e.g
<ItemTemplate> <span id="residualMapping" class='<%# string.Format("ABC_{0}_{1}",Eval("firstdropdownValue"),Eval("seconddropdownValue")) %>' output='<%# Eval("output") %>' > </span></ItemTemplate>
And assign classes to each dropdown and label. And finaly i have handled each drodown change event. In this event i am getting selected value of both dropdowns and using this value i am catching span and from span i am getting its custom attribute value. And this value i am assigning to the output label.