Lwc return value from apex. To get its data, the component wires an Apex method.
Lwc return value from apex To call an Apex method, a Lightning web component can: Wire a property; Wire a function; Call a method imperatively May 4, 2022 · In the documentation for LWC, Expose Apex Methods to Lightning Web Components, the note says: You can’t use an Apex inner class as a parameter or return value for an Apex method that's called by a Dec 3, 2020 · Stack Exchange Network. The return value from the Apex method is only available on the @wire. Jan 15, 2024 · That way of calling Apex in LWC is known as calling imperatively. Mar 17, 2022 · The normal way to pass data values from an LWC to an @AuraEnabled method is with a second parameter to the wire call supplying values using the same names that are used in the Apex e. I have this working when I configure the apex class to return just the lead List. The @wire has fresh data when the Promise resolves, but the actual value to which the Promise resolves is. I've set up an LWC which calls an apex method to make a callout an return the result of said callout after some server-side processing has been made. When the Promise is resolved, the data in the wire is fresh. log('result: ' + this. I'm calling the APEX, but the HTML continues to return "[object Object]" Can you see anything wrong with m Mar 17, 2022 · I need to pass the values from an Apex class to my LWC combobox. What is happening? EDIT: here is the promiseCache method, in case it has something to do with it: May 7, 2021 · The question would be - why return a JSON string from your Apex? Better to return an object directly to slightly reduce the size of the payload and to avoid having to parse the response. I'm not sure If I'm doing it right, but I created an apex file called QueryData. May 16, 2021 · The getter method in the JS file is used to fetch the data from apex using the wire method and return the account name in HTML but the name is not displaying at the moment. In this chapter of the Lightning Web Components developer guide, we explore how to use the built-in LWC methods to interact with Apex controllers and retrieve data from the Salesforce database. Let’s look at the apexWireMethodToProperty component from the lwc-recipes repo. The actual Apex Class/Method Call is done towards to bottom of the JS. May 3, 2022 · In LWC I can only get records by ID so I built the a simple Apex class to query the PortalMessage__c Object and output the records to a list - PortalToastMessage_Controller. cls, with the code below; (following a YouTube video). To call an Apex method: Import the Apex method; Expose the Apex method to a component; Consider several ways to call an Apex method: Wire an Apex method to a component; Call an Apex method imperatively; When calling an Apex method, it's helpful to cache the Apex method results on the client-side. For some reason, in the debug it shows a null value. How to call imperative apex method from connectedCallback() in LWC. What could be the issue? HTML: May 12, 2021 · I created an Apex method and want to show the returned string value in the HTML file when the button is clicked but for some reason it is not working. The Apex method makes a SOQL query that returns a list of contacts that each have a picture. LWC. You can use custom Apex class instances or Map<String, Object> to achieve the same result (though the former is better; it gives well known structure and names). You can’t use an Apex inner class as a parameter or return value for an Apex method that’s You can achieve this by three way 1. Apex class: @AuraEnabled(Cacheable = true) public static String testApexMethod(){ return 'This string is returned from Apex method'; HTML: Return results from a server-side controller to a client-side controller using the return statement. To get its data, the component wires an Apex method. I cannot use getRecord as I don't know the object of the recordId - the component will sit on different flexipages so the recordId could be one of 3 different objects, which is why I run the query (the code example is very simplified, so don't look at the query etc - it returns a record so Sep 26, 2022 · LWC not showing Apex return value. Call Apex method from LWC. result); is undefined, because result is a local variable, not a class-level variable. We also recommend importing references to Dec 18, 2020 · I've run into an issue with returning data from Apex to LWC which I'm having trouble figuring out. Here is my LWC JS: A LWC component (added on a Lightning record page) is calling an Apex method via @wire function where the return type of the apex method is a Map<String,Object>. The import statement Below I am Trying to Return an Instance of a Class to a LWC JS to then handle and display to the End User. js Aug 23, 2022 · I have below set of codes in which I am trying to pass List<String> value to my lwc component. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. But I am not getting any value. Apex Code: public class test2 { @AuraEnabled(cacheable=t Aug 28, 2019 · console. I am able to successfully call the Apex Class and Method and return data, but the data is empty/Null. for example if we are trying to retrieve an Account from the database, we use @wire, call the apex method and within the Apex method utilize a Mar 29, 2023 · It does not return an array, but a single record only. seller_id) and it looks fine, and checked what data type the field is in salesforce and it is a text field. Jun 17, 2021 · How to get value from map and assign to variables in lwc js? 1st variable = 1st value related to the first key element in map 2nd variable = 2nd value related to the second key element in map. Apex "QueryData. Use Queueable . log('5')" in the wired call runs? javascript lightning-web-components Dec 6, 2020 · The value of field in Component is "Sun Jan 03 2021 05:00:00 GMT+0530" but if i pass the value to a method in apex and print the same value in developer console the value gets deducted by 5:30 hrs and is printed as " 2021-01-02 23:30:00". This is the apex code: @AuraEnabled public static Map<String,Object> retrieveChannelSector(String accId, String userId){ Apr 27, 2022 · Thanks for informing me about the return type of result, I have to change my Apex method return type to List<Quotation__c> and then I can Iterate over result. Let's get started! Jan 14, 2024 · To use an Apex method in a Lightning Web Component, you need to import it into the component. log('result: ' + result);, which refers to the variable in the local scope. But once the record is saved with this field value the value of the field is again "3 jan 2021 5:00:00". Imperative Call Using Await In LWC. This is done using an import statement in the JavaScript file of the component. I want to iterate this Map and use the individual lists in separate datatables. After importing the apex class method you can call the apex methods as functions into the component by calling either via the wire service or imperatively. Apr 19, 2021 · In the js class, I call the apex getCityCurrentUser() method, which should return me a string, but I end up with an empty value. 3. log of the value i'm passing (this. 0. cls" Code: How can I make sure the imperative apex call has fully completed executing before the line "console. It seems that when the map property's value is null, wire service is ignoring them in the result. This component prints a list of contacts returned by an Apex method. If you just need the values then you can create an apex class wrapper and return a list of wrappers from the apex. I am having issues referencing the first record in my list from my LWC - see the title field in my notification. What's Oct 19, 2023 · In my LWC I am using an Apex Class to return a Map<String,List> containing lists for Leads and Contacts. – whoisnilu Commented Apr 29, 2022 at 11:55 Apr 9, 2020 · Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have An issue with the Apex controller / LWC interaction is that when retrieving values from an Apex controller / method the returned object will not bring back object properties that do not have values. Results data must be serializable into JSON format. You meant console. But the apex class works fine and gets my value from the database, which I try to return to js as a string (I make a log of this operation and see that my code exactly fills the string with the value I need). ID jobID = System. enqueueJob(new AsyncExecutionExample()); which will return ID of job and by which you can query your job status once its completed you can show the result of callout. Oct 11, 2019 · I'm trying to understand returning info from APEX in the lwc and showing it in the html. item. I already made a console. g. : recordId; @wire(bindScore, {accountId: recordId, programQ: 'Program Xyz'}) Apr 13, 2023 · I was told to look into query data directly from Apex, then I can return those values to my LWC. odjg kjaga uwf dpiaml yobx fkal szsyh vta jubxa zqju