You face a strange problem when trying to add values to the already selected values. 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. // The function allows the url to become dynamic to append additional arguements. Add the state name column to the ColdFusion query that generates the JSON. function onCountryChange1(e){ // If the user selected a value, enable and refresh the next dropdown list } // Create the last button. for (var i = 0; i < cityData.length; i++) { } else { In this example, I will try my best to replicate the UI of James Moberg's 'North America Search Demo' found at https://www.sunstarmedia.com/demo/countrystate/. 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. Once the comma-separated stateIdList string has been validated, we will query the database with these values using the SQL IN keyword. // ---------- Country Datasource. if (id != '') { });//var stateDs1 var cityData = cityDropdown.dataSource.data(); Important: The widget will clear the applied filter if a new value is set. This must be outside of the transport block How to add pre-populated Data to kendo-UI components (multi-select, text, etc)? This community can only thrive if we continue to work together. The state MultiSelect widget will either pass one or more numeric values, separated by commas when a selection is made. Product Bundles. All of the widgets supported events are documented on the Kendo UI site-search for the widget documentation and click on the API button. This entry was posted on October 13, 2022 at 12:29 AM and has received 109 views. Saving for retirement starting at 68 years old. 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. }//function onCountryChange1(e) In this example, we are passing in the countryId from the country dropdown. // If the user selected a value, enable teh button at the end of the interface // Get a reference to the city dropdown. }).data("kendoButton"); cityButton.enable(false); dataType: "json", template: ' #: data.name #', deselect: onStateDeselect, // Fetch the data from the cityDs Kendo datasource. //Testing carriage: alert('cityStateId:' + cityStateId + ' deselectedStateId:' + deselectedStateId); if ( value == list[i] ) { How many characters/pages could WordStar hold on a typical CP/M machine? I'm using a Kendo Multi Select. // Enable the state dropdown if (id != '') { Add the new field to the group argument in the Kendo DataSource. enable: false The value to set. for ( var i = 0; i < list.length; i++ ) { url: "/blog/demo/WorldCountries.cfc?method=getCountries", // The cfc component which processes the query and returns a json string. 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. Here is the code: To set single value: required.value ("Laura Fuller") To set multiple value: var cityId = cityData[i].id; The data sources belonging to the dependent dropdowns will pass the necessary values in the hidden form fields to the remote end-point. 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. //Testing carriage: alert('adding cityId ' + cityId + ' back into the dropdown'); This selection is saved into the selectedCity hidden form and passed along using the Kendo DataSource. } // Function to enable the button to launch a new window showing the details function listFind(list, value, delimiter) { 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. Ok I struggled with is even after I had the answer. Find centralized, trusted content and collaborate around the technologies you use most. 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. Thanks for contributing an answer to Stack Overflow! Components / Editors / MultiSelect. Note, using the cityDs variable that we created above won't work- we need to use the full chained name here. How do you set the data values in Java Script? It was just when I updated the selection it was causing me issues. 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. We have already introduced this approach in our previous Cascading Country, State and City Kendo UI Dropdowns article and will briefly cover the major details. transport: { if (id != '') { list = list.split(delimiter); // Create an array in order to populate multiple values We will use this event to remove any chosen cities when the parent state is deselected by the user. This is always a factor when using code inside of a document ready block. Here we are setting the the datasource using dropDownVarName.datasource. dataTextField: "name", result = i + 1; cityDropdown.value(cityIdList); var stateDropdown1 = $("#stateDropdown1").kendoMultiSelect({ To learn more, see our tips on writing great answers. 5 Answers Sorted by: 4 You can also assign the array, returned from the value () method, directly to the variable, e.g. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. rev2022.11.3.43004. 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. // Determine what was just deselected var result = 0; As we previously discussed in our prior article, every widget supports a certain set of events. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. The state multi-select dropdown is quite similar to the state dropdown-list, but has a few changes that I will note. var id = this.value(); // Set a var for the city dropdown list. autoBind: false, See Trademarks for appropriate markings. // Note: since this template is in a different directory, we can't specify the cfc template without the full path name. If you click on button the multi-value input gets: name1, name2 and name6. // Loop through the data to create an array to send to the city multi-select How to set data values on Kendo Multi Select? return result; filter: "contains", However, we will leave the city of Los Angeles as the state of California was not deselected. Now if you want to append any thing to already selected list, you can do what @OnaBai has show his snippet. Here we are sending both the countryId and the stateId. // Disable the city button function onStateChange(e){ 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. cityDropdown.enable(); 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. If the user then deselects the state of New York, we will want to also remove the city of New York. 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. });// document ready I have the following script: You can use value() method for setting the values. Copyright 2022 Progress Software Corporation and/or its subsidiaries or affiliates. 2022 Moderator Election Q&A Question Collection. Doing so would disable the city dropdown if you have made a new city selection. cityDropdown.dataSource.read(); This step is completely optional. 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. 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. Here, we need to use the deselect event to determine if any cities should be removed if the user deselects a given state. Refresh any dependent dropdowns using the widgets refresh method. //Testing carriage: alert('removing cityId ' + cityId + ' from the dropdown'); 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. }//change: function() {.. New answers and comments are not allowed. filter: "contains", All Telerik .NET tools and Kendo UI JavaScript components in one package. cityIdList.push(cityId); Asking for help, clarification, or responding to other answers. var cityButton = $("#cityButton1").data("kendoButton"); cityDs.fetch(function(){ cityDropdown.dataSource.read(); Here, we will add grouping to group all of the cities by the chosen states. dataTextField: "name", 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. dataType: "json", return result; 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. var deselectedStateId = dataItem.id; Often, an event may be unique to a particular widget, such as the deselect event here with the Kendo MultiSelect. This could affect MVVM value binding. It was working most of the time. There are a few differences- we are substituting the string kendoMultiSelect for kendoDropdownList, using placeHolder instead of optionLabel for the hint. @Rodney, for some sort of reason you cannot reuse the original array for setting new values, so you should do. var cityDropdown = $("#cityDropdown1").data("kendoMultiSelect"); Stack Overflow for Teams is moving to its own domain! // Refresh the city dropdown // Save the selected value in a hidden form var cityDs = new kendo.data.DataSource({ if(delimiter == null) delimiter = ','; This validation step is necessary as the database query will fail if there are empty or non-numeric values. Now enhanced with: The Kendo UI MultiSelect widget will accept an array of values for its value method. } cache: false, transport: { }//..for (var i = 0; i < cityIdList.length; i++) cache: false, if (!data.length){ Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. type: "POST" var cityStateId = cityData[i].state_id; This function is used to perform clean-up operations when a state is deselected from the state multi-select. This is nearly identical to the state drop-down list example in our previous article. dataSource: countryDs1 optionLabel: "Select City", // ----------- City MultiSelect. // Note: the select method does not exist for the multiSelect 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. The user must select either one or more states. 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). }. autoBind: false, var cityButton = $("#cityButton1").data("kendoButton"); // 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 . dataTextField: "name", stateDropdown1.dataSource.read(); Do US public school students have a First Amendment right to be able to perform sacred music? Multiplication table with plenty of comments, Math papers where the only issue is that someone else could've done it but didn't. 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. I want to load selected values into the multi select. Important: If there are no items, the value method will pre-fetch the data before continue with the value setting. All of these hidden fields are populated by the widget's respective onChange events. 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. EDIT If you want to add to current selected values then do: NOTE: For some sort of reason you cannot reuse selected array for setting new values, so you should create a new one. } Why does it matter that a group of January 6 rioters went to Olive Garden for dinner after the riot? This would negatively impact the performance of the UI and potentially crash the browser. James is a frequent contributor to the ColdFusion community and his elegant demo is used in production environments. // ------------ onChange Event ------------ Does squeezing out liquid from shredded potatoes significantly reduce cook time? All Rights Reserved. // If the user selected a value, enable and refresh the next dropdown list // 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)). if (cityStateId != deselectedStateId){ // Function to enable the last city dropdown menu filter: "contains", 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. (Which case you don't handle in your examples.) Does it make sense to say that if someone was hired for an academic position, that means they were the "best"? In this example, once a user deselects a state we will call the onStateDeselect function which will be covered later in this article. // 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)) url: function() { return "/blog/demo/WorldCountries.cfc?method=getCitiesByStateIdListGroupByState&stateIdList=" + $('#selectedState1').val(); }, This will group the data by the state in the dropdown. } // Get the next dropdown list. ----------- Who would I do that? enable: false, 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. read: { 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. We are also grouping the data by the state name using group: { field: "state" }. We have covered cascading menus with the dropdown lists, but there are fundamental differences. This is fired everytime there is a change to the state datasource The Kendo DataSource takes the values from the hidden selectedState form field and passes the comma-separated list to the getCitiesByStateIdList method. // ------------ onChange Event ------------ var id = this.value(); How can I select an element by name with jQuery? // save the selected value in a hidden form } The MultiSelect displays a list of options and allows multiple selections from this list. We don't need to pass multiple values as the parent country dropdown is a Kendo DropDownList and not a MultiSelect. // Clear the previous values in the multiSelect // Get the Kendo button at the end of the interface I did not want to have a scenario where cities are shown for multiple states and multiple countries. ColdFusion and Kendo UI. We will use this in the loop below to set its items. //Testing carriage: alert('New cityIdList' + cityIdList); By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. or validate the data and perform any additional logic. 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.

Civil Engineering Drawing, What Is Morphological Analysis Of Words, Terraria Content Folder Not Found, Colorado Mesa Summer Camps 2022, Angular Filter Array By Property, Single Linked List Python, Precast Construction Advantages, Agent-based Modeling Python Book, What Chemical Do Pest Control Companies Use,