By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. If initial items are lost in attempt to set new values, probably the widget is filtered by the end user, but no value has been selected. // Country flag var cityDs = cityDropdown.dataSource; url: "/blog/demo/WorldCountries.cfc?method=getCountries", // The cfc component which processes the query and returns a json string. group: { field: "state" } cityDs.fetch(function(){ Here is the code: To group data, simply add the field to the JSON from the server and add that field to the Kendo UI group argument in the Kendo data source. All of these hidden fields are populated by the widget's respective onChange events. The state multi-select dropdown is quite similar to the state dropdown-list, but has a few changes that I will note. However, this is not necessary here, and the select method does not exist for the multiSelect }//function onStateChange(e) change: onStateChange, or validate the data and perform any additional logic. cityDropdown.value([]); } (Which case you don't handle in your examples.) if (id != '') { The countryDropdown, stateDropdown, and cityDropdown fields contain the Kendo UI widgets, and the 'View City Details' button at the end of the UI in this example is for visual purposes. The widget represents a richer version of the <select> element and provides support for local and remote data binding, item and tag templates, and configurable options for controlling the list behavior. var result = 0; In this example, we are passing in the countryId from the country dropdown. $("#selectedCity1").val(this.value()); Select at least two states and at least one city from each state. }//..for (var i = 0; i < cityIdList.length; i++) Telerik has an example of how to create cascading dropdowns with MultiSelects, however, in my opinion, it is too complex and will suggest a simpler straightforward event-based approach. // If the user selected a value, enable and refresh the next dropdown list Now coming to your problem - here is my solution: Now in order to set the selected values for the select box, you just have to use the value() method. url: function() { return "/blog/demo/WorldCountries.cfc?method=getCitiesByStateIdListGroupByState&stateIdList=" + $('#selectedState1').val(); }, // ----------- Country Dropdown. Important: This method does not trigger change event. for (var i = 0; i < cityData.length; i++) { // Group by the state. How many characters/pages could WordStar hold on a typical CP/M machine? Once the query has been made, the ColdFusion Query Object will be transformed into JSON using the convertCfQuery2JsonStruct method found in the CFJson component. ---------- var cityButton = $("#cityButton1").data("kendoButton"); cache: false, // Check to see if the stateId matches the deselected state when the selected city is found in the datasource (listFind Javascript function: listFind(list, value, delimiter)) Portions of Galaxie Blog are powered on the server side by BlogCfc, an open source blog developed by Raymond Camden. // Now get a reference to the city dropdown datasource. if ( value == list[i] ) { cityDropdown.dataSource.read(); How can a GPS receiver estimate position faster than the worst case 12.5 min it takes to get ionospheric model parameters? // Note: in the cascading dropdown example, we are using the select event for the state dropdown to set the option to the default 'Select' placeholder (stateDropdown1.select(0)). I have a JSON array in jsonObj(variable name), like for example: Join us on our journey to create the world's most complete HTML 5 UI Framework -. // Determine what was just deselected cityButton.enable(true); Revitalizing BlogCfc was a part of my orginal inspiration that prompted me to design this site. Now enhanced with: The Kendo UI MultiSelect widget will accept an array of values for its value method. autoBind: false, var cityDs = new kendo.data.DataSource({ optionLabel: "Select State", cityDropdown.value(cityIdList); contentType: "application/json; charset=utf-8", // Note: when posting json via the request body to a coldfusion page, we must use this content type or we will get a 'IllegalArgumentException' on the ColdFusion processing page. For the dependent multi-select dropdown, we are using different server-side logic in order to query the database allowing multiple choices for cities and countries. We will also briefly cover how to inspect the data coming from the parent dropdown data source and use the JavaScript push method to deselect MultiSelect values chosen by the user as well as using the Kendo DataSource to group city data in the menu. optionLabel: "Select Country", // Now enable the city dropdown list. Galaxie Blog Version 3.0 (Toby's Edition) June 14th 2022 Joshua Tree theme, https://www.sunstarmedia.com/demo/countrystate/, Differences in this approach when using the MultiSelect, Introducing Kendo MultiSelect Deselect Event, The Optional State onStateDeselect Function, Alternative Deselect Function to Remove All of the Selected MultiSelect Options on Deselect, Introduction to Grouping Using the Kendo DataSource, Grouping the City MultiSelect Dropdown by the Selected State, For Kendo MultSelects, the Query Clause Must Also Support Multiple Values, Cascading Country, State and City Kendo UI Dropdowns, Cascading Country, State, and City Kendo UI Dropdowns, Adding the Country Flag to the DropDownList, Create The Country Dropdown Kendo Datasource, Using ColdFusion to Populate Kendo UI Widgets, Incorporate Kendo UI into a ColdFusion Application, Convert a ColdFusion Query into a JSON Object, Dynamically Populating Kendo MultiSelects, Working Code Podcast - Episode 99: Technical Debt Isn't Romantic, ColdFusion Security Training Class December 2022, Preventing Unbounded Full-Table Scans In My ColdFusion Database Access Layer, Join Adobe for ColdFusion Summit Online, re-presenting sessions over the next several weeks. What value for LANG should I use for "sort -u correctly handle Chinese characters? template: ' #: data.name #', @Rodney, for some sort of reason you cannot reuse the original array for setting new values, so you should do. enable: false, // ------------ onChange Event ------------ http://docs.kendoui.com/api/web/multiselect, docs.telerik.com/kendo-ui/api/web/multiselect#methods-value, Making location easier for developers with new data primitives, Stop requiring only one assertion per unit test: Multiple assertions are fine, Mobile app infrastructure being decommissioned. }//change: function() {.. This could affect MVVM value binding. All Rights Reserved. // Deselect event to remove cities if the parent state was removed by the user Use the drop-down widgets onChange method to: Capture and store the user's selection into a hidden form field. // Refresh the state dropdown If you want to group the city MultiSelect by the states, we need to: To group by the state, the state field must be returned in the JSON. It was working most of the time. filter: "contains", var countryDropdown1 = $("#countryDropdown1").kendoDropDownList({ How do you set the data values in Java Script? // Get the datasource length there is a easier way to do this. New answers and comments are not allowed. deselect: onStateDeselect, All Rights Reserved. The value to set. // Note: the dataValueField and dataTextField are available in this struct In this example, even though we are using a MultiSelect here instead of a DropDownList, the Kendo data source of the state dropdown is identical to the DropDownList state data source in our previous article.The only difference here is that in this example, the data-sources change method is used on rare occasions to enable and populate the cities dropdown when there . // Note: the select method does not exist for the multiSelect This example has some very minor differences from the first state multi-select. So here is the API documentation page of MultiSelect - http://docs.kendoui.com/api/web/multiselect. This is always a factor when using code inside of a document ready block. }//..if (id != '') { by Gregory Alexander $(document).ready(function() { If you have an idea, BlogCfc based code, or a theme that you have built using this site that you want to share, please contribute by making a post here or share it by contacting us! However, if this is inside of a ready block, you will get a 'Cannot read properties of undefined' error. type: "POST" var deselectedStateId = dataItem.id; Now if you want to append any thing to already selected list, you can do what @OnaBai has show his snippet. type: "POST" // -------------------------------- Last City MultiSelect. // Note: since this template is in a different directory, we can't specify the cfc template without the full path name. });//var countryDs1 function onCountryChange1(e){ // Get the underlying datasource data. Progress is the leading provider of application development and digital experience technologies. // Loop through the data to create an array to send to the city multi-select var cityButton = $("#cityButton1").data("kendoButton"); The best way to understand what is going on is to interact with the demonstration at the top of this article. function onStateDeselect(e) { // Create the onChange method that will create the next dropdown list The city onChange method simply saves the selected cities into the selectedCity hidden form and enables the button at the bottom of the UI once a selection has been made. This dropdown list contains the flags of each country, if you are interested in how to accomplish this please see Adding the Country Flag to the DropDownList. // If the user selected a value, enable and refresh the next dropdown list See Trademarks for appropriate markings. // Function to enable the button to launch a new window showing the details We can also use the read method Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. This is nearly identical to the state drop-down list example in our previous article. In this article you can see how to use the value method of the Kendo UI MultiSelect. // Get the Kendo button at the end of the interface Important: If there are no items, the value method will pre-fetch the data before continue with the value setting. Changing DataTextField of Kendo MultSelect dynamically, Kendo multi-select with tab key selection, how to insert value into the kendo combo box, Cascade Multi Select Kendo Dropdown on change of another Multi Select Kendo Dropdown, Kendo multi select Autoclose not working as expected, Non-anthropic, universal units of time for active SETI. });//..cityDs.fetch(function(){ When using a widget that allows the user to select multiple values, like the MultiSelect, it is nice to be able to group the data of the next dependent dropdown by the selected values. Do US public school students have a First Amendment right to be able to perform sacred music? This will group the data by the state in the dropdown. cityDropdown.enable(); var cityDropdown = $("#cityDropdown1").data("kendoMultiSelect"); The data sources belonging to the dependent dropdowns will pass the necessary values in the hidden form fields to the remote end-point.
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