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. Does it make sense to say that if someone was hired for an academic position, that means they were the "best"? // If there are no states for this country or validate the data and perform any additional logic. // The function allows the url to become dynamic to append additional arguements. var id = this.value(); Here is the code: // Now get a reference to the city dropdown datasource. // Use the Javascript push method to push the city into our cityIdList array that we will use to repopulate the MultiSelect. }//..if (id != '') { We can also use the read method 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. 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. var cityButton = $("#cityButton1").data("kendoButton"); // Get the Kendo button at the end of the interface for ( var i = 0; i < list.length; i++ ) { // Create the last button. dataSource: stateDs1, // Now enable the city dropdown list. Try our brand new, jQuery-free Angular 2 components. We have covered cascading menus with the dropdown lists, but there are fundamental differences. dataTextField: "name", dataValueField: "id", Note: if this code is not inside of a document ready block, you can use the var that was created when creating the datasource. // Disable the the button // create MultiSelect from select HTML element var required = $ ("#required").kendoMultiSelect ().data ("kendoMultiSelect"); Now in order to set the selected values for the select box, you just have to use the value () method. The state multi-select dropdown is quite similar to the state dropdown-list, but has a few changes that I will note. Progress, Telerik, and certain product names used herein are trademarks or registered trademarks of Progress Software Corporation and/or one of its subsidiaries or affiliates in the U.S. and/or other countries. To set single value: Now to clear the values you just set empty string as the value. dataSource: countryDs1 read: { // Refresh the state dropdown Now enhanced with: Gets or sets the value of the MultiSelect. This entry was posted on October 13, 2022 at 12:29 AM and has received 109 views. transport: { ----------- You face a strange problem when trying to add values to the already selected values. cache: false, This function is used to perform clean-up operations when a state is deselected from the state multi-select. 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 is no state. // Get a reference to the city dropdown. All Telerik .NET tools and Kendo UI JavaScript components in one package. Connect and share knowledge within a single location that is structured and easy to search. } } else { Also, we will not use the select argument and the end of the initialization to default the multi-select to the first value in the list (the multi-select does not have an initial value and thus does not support the select argument). var data = this.data(); // ------------ onChange Event ------------ if (id != '') { This will only fire when there is no data in the Kendo datasource and will enable the city dropdown in order for the user to still be able to pick a city. Since we have already covered this dropdown, I will not share the code or elaborate on the details but will include the links to the original article below: The state multi-select dropdown is dependent on the country dropdown and contains all of the states for the selected country and is a required field. 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. autoBind: false, optionLabel: "Select State", How do you remove all the options of a select box and then add one option and select it with jQuery? This community can only thrive if we continue to work together. Use the drop-down widgets onChange method to: Capture and store the user's selection into a hidden form field. Does a creature have to see to be affected by the Fear spell initially since it is an illusion? });//var cityDs Progress, Telerik, Ipswitch, Chef, Kemp, Flowmon and certain product names used herein are trademarks or registered trademarks of Progress Software Corporation and/or one of its subsidiaries or affiliates in the U.S. and/or other countries. It was working most of the time. Find centralized, trusted content and collaborate around the technologies you use most. Thanks for contributing an answer to Stack Overflow! data.length){.. }//read.. },//transport.., Kendo UI for jQuery . group: { field: "state" } Gregory Alexander either owns the copyright, or has the rights to use, all images and photographs on the site. 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 -. As we previously discussed in our prior article, every widget supports a certain set of events. Please check the following sample and let me know if it helps: Please check the following sample and let me know if it helps: Telerik and Kendo UI are part of Progress product portfolio. Copyright 2022 Progress Software Corporation and/or its subsidiaries or affiliates. // Get the next dropdown list. However, this is not necessary here, and the select method does not exist for the multiSelect //Testing carriage: alert('cityStateId:' + cityStateId + ' deselectedStateId:' + deselectedStateId); The Kendo DataSource takes the values from the hidden selectedState form field and passes the comma-separated list to the getCitiesByStateIdList method. var cityDs = new kendo.data.DataSource({ To perform this cleanup, we are going to use JavaScript to inspect the data coming back from the server and dynamically re-populate the Kendo MultiSelect. ----------- This dropdown is identical to the state dropdown in our Cascading Country, State, and City Kendo UI Dropdowns article. cityDropdown.enable(); Often, an event may be unique to a particular widget, such as the deselect event here with the Kendo MultiSelect. Should we burninate the [variations] tag? The model bound to the widget will not be updated. // Get the cityId All Telerik .NET tools and Kendo UI JavaScript components in one package. cityButton.enable(false); if (cityStateId != deselectedStateId){ 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. 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. var countryDs1 = new kendo.data.DataSource({ var id = this.value(); var deselectedState = dataItem.name; However, we will leave the city of Los Angeles as the state of California was not deselected. // Function to enable the city dropdown when a state does not exist for a selected country. url: function() { return "/blog/demo/WorldCountries.cfc?method=getStates&countryId=" + $('#selectedCountry1').val(); }, list = list.split(delimiter); No, I meant if I have 5 items selected and I want to append a 6th item. The data sources belonging to the dependent dropdowns will pass the necessary values in the hidden form fields to the remote end-point. -------------------------------- var cityId = cityData[i].id; All Rights Reserved. function onStateDeselect(e) { 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. // Get the datasource length Do US public school students have a First Amendment right to be able to perform sacred music? Refresh any dependent dropdowns using the widgets refresh method. enable: false } else { Making statements based on opinion; back them up with references or personal experience. }, It was just when I updated the selection it was causing me issues. All of these hidden fields are populated by the widget's respective onChange events. cityDropdown.enable(); // Get the Kendo button at the end of the interface 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. var cityButton = $("#cityButton1").data("kendoButton"); cityDropdown.value([]); Like the rest of the posts in this series, we will be using ColdFusion on the server side, however, it should be easily understood if you use a different server-side language, and you should be able to follow along. 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. There are some countries that do not have states. if(delimiter == null) delimiter = ','; Add the new field to the group argument in the Kendo DataSource. // Get the Kendo button at the end of the interface // Set a var for the city dropdown list. To clear the value, pass an empty array. // ----------- State Datasource. We are going to change the query in the getCities method in the World component on the server and join the country table to add the state name. Here, we need to use the deselect event to determine if any cities should be removed if the user deselects a given state. 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. Now if you want to append any thing to already selected list, you can do what @OnaBai has show his snippet. You can overcome this behavior by triggering the change event manually using trigger("change") method. if ( value == list[i] ) { This step is completely optional. // Enable the state dropdown ColdFusion and Kendo UI. dataValueField: "id", read: { stateDropdown1.dataSource.read(); // Determine what was just deselected cityDropdown.dataSource.read(); }//function onStateChange(e) Kendo UI UI for jQuery UI for Angular UI for React . var cityButton = $("#cityButton1").kendoButton({ $(document).ready(function() { // Save the id in a hiden form in order to get at it in the next dropdown 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. // Refresh the city dropdown To remove all of the selected options in the Kendo MultiSelect, simply use the following code: This multi-select is dependent upon the chosen values in the country dropdown and the state multi-select. This validation step is necessary as the database query will fail if there are empty or non-numeric values. if (!data.length){ }. All Rights Reserved. After making the selections, deselect one of the states and the associated cities that you selected will also automatically be deselected as well. In the below code, the dataTextField represents which column value needs to be displayed in the dropdown and the dataValueField represents value for each text and important one is group parameter to enable the grouping operation based on the column value. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. cache: false, // Note: we are not disabling the city MultiSelect in an else block if there is no data. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. How do you set the data values in Java Script? You can't simply alter the array returned by .value(). dataTextField: "name", Revitalizing BlogCfc was a part of my orginal inspiration that prompted me to design this site. New answers and comments are not allowed. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. cityButton.enable(true); url: function() { return "/blog/demo/WorldCountries.cfc?method=getCitiesByStateIdListGroupByState&stateIdList=" + $('#selectedState1').val(); }, Not the answer you're looking for? Copyright 2022 Progress Software Corporation and/or its subsidiaries or affiliates. cityDropdown.value(cityIdList); 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. How many characters/pages could WordStar hold on a typical CP/M machine? //Testing carriage: alert('adding cityId ' + cityId + ' back into the dropdown'); Now enhanced with: The Kendo UI MultiSelect widget will accept an array of values for its value method. Now enhanced with: NEW: Design Kits for Figma; Online Training; Document Processing Library; Embedded Reporting for web and desktop; Web. // Loop through the data to create an array to send to the city multi-select var cityDropdown = $("#cityDropdown1").data("kendoMultiSelect"); This example has some very minor differences from the first state multi-select. optionLabel: "Select Country", } How can I select an element by name with jQuery? var cityData = cityDropdown.dataSource.data(); deselect: onStateDeselect, In this example, once a user deselects a state we will call the onStateDeselect function which will be covered later in this article. 2022 Moderator Election Q&A Question Collection. Nearly every Kendo Widget, including the MultiSelect, has the ability to group data. var cityButton = $("#cityButton1").data("kendoButton"); .select() is not a method in version 2013.1.319 of KendoUI. DevCraft. I have the following script: You can use value() method for setting the values. This is fired everytime there is a change to the state datasource If you click on button the multi-value input gets: name1, name2 and name6. //Testing carriage: alert('New cityIdList' + cityIdList); I'm using a Kendo Multi Select. In this example, we will demonstrate how to create cascading menus' with Kendo MultiSelects. }//..if (id != '') // If the city does not reside in the state that was just deselected, add it to cityIdList array using the JS push method result = i + 1; This must be outside of the transport block // On change function that will enable the next dropdown menu if a value is selected. });//var countryDs1 The state MultiSelect widget will either pass one or more numeric values, separated by commas when a selection is made. Here we are setting the the datasource using dropDownVarName.datasource. This is always a factor when using code inside of a document ready block. We are going to use the same method from the World.cfc that we discussed in our Using ColdFusion to Populate Kendo UI Widgets article. cache: false, // ----------- City MultiSelect. change: onCityChange, Gregory's Approach to handle cascading dropdowns: The first dropdown is a Kendo DropDownList widget; I could have made it a multi-select, but the city list is already quite long even when a unique state is selected. } cityDropdown.dataSource.read(); In this article you can see how to use the value method of the Kendo UI MultiSelect. } What does puncturing in cryptography mean, Horror story: only people who smoke could see some monsters. }//..if (id != '') { // City populated by the second state dropdown. var cityDropdown1 = $("#cityDropdown1").kendoMultiSelect({ The value to set. dataType: "json", So here is the API documentation page of MultiSelect - http://docs.kendoui.com/api/web/multiselect. ----------- filter: "contains", If you don't want the complexity of this code you can simply remove the cities whenever something is deselected by keeping the cities in the list or by setting the values of the multi-select to null. }).data("kendoDropDownList");//var countryDropdown1 } ---------- // Disable the button at the bottom of the UI type: "POST" We don't need to pass multiple values as the parent country dropdown is a Kendo DropDownList and not a MultiSelect. // ------------ onDeselect Event ------------ This question is locked. Instead, when a state is deselected; we need to dynamically recreate the values in the MultiSelect. This could affect MVVM value binding. Progress is the leading provider of application development and digital experience technologies. You don't need to use grouping in your SQL- the only thing that you need is the JSON string to return the field that you want to group by, add the field that you want to group by, and the Kendo data source will perform the grouping for you. 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. // Refresh the city dropdown The MultiSelect displays a list of options and allows multiple selections from this list. // Country flag James is a frequent contributor to the ColdFusion community and his elegant demo is used in production environments. Who would I do that? // 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)) This function is fundamentally the same as city dropDownList that we have previously covered, however, the string kendoDropDownList is replaced with kendoMultiSelect, and optionLabel is replaced with placeHolder. // ------------ onChange Event ------------ }, dataType: "json", Once the comma-separated stateIdList string has been validated, we will query the database with these values using the SQL IN keyword. Why does it matter that a group of January 6 rioters went to Olive Garden for dinner after the riot? 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. return result; The client-side HTML is straightforward. The kendo multiselect is in a Kendo Window.What I wanted is if I had "Name" in the "key" portion, then just pick the "values" part and place it in the multiSelect just like the way you said, multiselect.value (jsonObj.values); So, I guess I am not wrong about how to set the values in multiSelect. @Rodney, for some sort of reason you cannot reuse the original array for setting new values, so you should do. If the user then deselects the state of New York, we will want to also remove the city of New York. See the code below. There are many ways to accomplish this, but in this example, I chose to use the justNumericList function as it was modified by James Moberg, and had initially assumed that he modified this function for his own cascading dropdowns that we are replicating. }//change: function() {.. Ok I struggled with is even after I had the answer. Portions of Galaxie Blog are powered on the server side by BlogCfc, an open source blog developed by Raymond Camden. I want to load selected values into the multi select. // Function to enable the last city dropdown menu Components / Editors / MultiSelect. Note, using the cityDs variable that we created above won't work- we need to use the full chained name here. url: "/blog/demo/WorldCountries.cfc?method=getCountries", // The cfc component which processes the query and returns a json string. }//function onStateChange(e) var countryDropdown1 = $("#countryDropdown1").kendoDropDownList({ filter: "contains", // Inspect the transformed JSON JavaScript object from the datasource to determine if we should eliminate certain cities that belonged to the deselected state My Kendo Grid had over 6,000 items to select from. // Group by the state. 5 Answers Sorted by: 4 You can also assign the array, returned from the value () method, directly to the variable, e.g. We are also calling functions via two MultiSelect events- the change event, which we have already covered, and a new deselect event that is specific to the Kendo MultiSelect. autoBind: false, This ColdFusion function takes these comma-separated values and validates the list using the justNumericList custom function to ensure that the values are numeric and do not have any empty values. A String value or an Array of strings is accepted. // Note: since this template is in a different directory, we can't specify the cfc template without the full path name. In our last cascading dropdown article, we reverted all of the child dropdowns to the initial value when a parent dropdown was changed (see the 'stateDropdown.select(0)' line at the very end of the code example of our previous Initializing the second state dropdown article). // save the selected value in a hidden form This grouping is more effective when the data is not as extensive. // Disable the the button ----------- // Fetch the data from the cityDs Kendo datasource. How to set data values on Kendo Multi Select? Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. change: onCountryChange1, If an image is not part of the "Galaxie Blog" open sourced distribution package, and instead is part of a personal blog post or a comment, please contact us and the author of the post or comment to obtain permission if you would like to use a personal image or photograph found on this site. template: ' #: data.name #', Saving for retirement starting at 68 years old. // Enable the button Initialize the dropdowns as you normally would- but add an onChange method. var cityDropdown = $("#cityDropdown1").data("kendoMultiSelect"); // Disable the city button // Enable the city dropdown list. All of the widgets supported events are documented on the Kendo UI site-search for the widget documentation and click on the API button. Can I spend multiple charges of my Blood Fury Tattoo at once? var stateDropdown1 = $("#stateDropdown1").kendoMultiSelect({ Jame's demo uses a different library, Select2 UI, but it uses the same concepts that we want to show here. var stateDs1 = new kendo.data.DataSource({ In this case it would be cityDs. // Create the onChange method that will create the next dropdown list (Which case you don't handle in your examples.) You will need to remove applied filter, before calling value method. change: onStateChange, Here we are sending both the countryId and the stateId. var id = this.value(); Here, we will add grouping to group all of the cities by the chosen states. 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. if (listFind(selectedCities,cityId) > 0){ Here, we need to do something similar when a state is deselected. read: { var cityDs = cityDropdown.dataSource; });// document ready }//..for (var i = 0; i < cityIdList.length; i++) // Get any cities that were selected // If the user selected a value, enable teh button at the end of the interface Add the below script to enable kendoMultiSelect and load the data from database using kendo transport. What value for LANG should I use for "sort -u correctly handle Chinese characters? We are not using the Kendo DropDownList's select argument to set the default value of the Kendo MultiSelect when changes are made to the parent dropdowns. type: "POST" 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. You are not limited to grouping the data by the dropdown value or the label- you can use any field in the JSON that is returned by the server. // Save the selected value in a hidden form Important: If there are no items, the value method will pre-fetch the data before continue with the value setting. //Testing carriage: alert('removing cityId ' + cityId + ' from the dropdown'); transport: { The best way to understand what is going on is to interact with the demonstration at the top of this article. // Create an array in order to populate multiple values transport: { We will use this event to remove any chosen cities when the parent state is deselected by the user. Multiplication table with plenty of comments, Math papers where the only issue is that someone else could've done it but didn't. Make a wide rectangle out of T-Pipes without loops. To learn more, see our tips on writing great answers. // First state dropdown. function onStateChange(e){ 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. function listFind(list, value, delimiter) { Select at least two states and at least one city from each state. We will use this in the loop below to set its items. 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. Just like the onChange method for the Kendo drop-down list, this method saves the selected values into the cityDropdown hidden form field and enables and refreshes the data in the next city multi-select. // Function to enable the button to launch a new window showing the details How to add pre-populated Data to kendo-UI components (multi-select, text, etc)? // The function allows the url to become dynamic to append additional arguements. var cityDropdown = $("#cityDropdown1").data("kendoMultiSelect"); rev2022.11.3.43004. } Once the query has been made, the ColdFusion Query Object will be transformed into JSON using the convertCfQuery2JsonStruct method found in the CFJson component. The user must select either one or more states. $("#selectedCity1").val(this.value()); One of the main differences is that since the user can select multiple states with the multi-select instead of just one when using the drop-down list, the ColdFusion logic on the server side must change to allow for multiple states to be passed in. Add the state name column to the ColdFusion query that generates the JSON. function onCountryChange1(e){ 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! See Trademarks for appropriate markings. });//var kendoMultiSelect optionLabel: "Select City", cityDs.fetch(function(){ dataType: "json", var selectedCities = $("#selectedCity1").val(); });//..cityDs.fetch(function(){ Don't worry about the details of this code yet- we are going to cover this in detail in our next article- just note what the purpose of this code is.
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