I am looking for a simple "Hello world" sample to set the Description of the workorder to "Hello World" through the button and with the use of a AppCustomizations.js


What I am looking for is the equivalent of mbo.setValue("DESCRIPTION","Hello World")
I managed to create an alert("Hello world").

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Vincent Wanders
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Hi Vincent,

There can be few ways to do it. Because of that I suggest you to check MAF_Development_Information.docx chapters: State, Datasource Overview and also review code that was done by IBM (for example WorkOrderCreateController:createWorkorder()).

I think one of the way to solve your requirement can be like this:

app.xml

<button slot="buttons" label="Update Description" on-click="updateDesc" id="test"/>

AppCustomizations.js

async updateDesc() {
      let dsCreateWo = this.app.findDatasource("dsCreateWo");
      if(dsCreateWo) {
        dsCreateWo.item["description"] = "Hello World"; 
      }
}

Another solution is to use on-click-arg

app.xml

<button slot="buttons" label="Update Description" on-click="updateDesc" on-click-arg="{{'item':dsCreateWo.item,'datasource':dsCreateWo,'page':page,'app':app}}" id="test"/>

AppCustomizations.js

async updateDesc(evt) {
      let workorder = evt.item;
      if(workorder) {
        workorder["description"] = "Hello World"; 
      }
 }

Good luck!

Thanks! This is what I was looking for. 
Both examples work like a charm.

I will also look into the document (after my holidays). 
Again, many thanks!

Have a nice weekend.

<button slot="buttons" label="Update Description" on-click="updateDesc" id="test"/>

async updateDesc() {      let dsCreateWo = this.app.findDatasource("dsCreateWo");      if(dsCreateWo) {        dsCreateWo.item["description"] = "Hello World";       }}

<button slot="buttons" label="Update Description" on-click="updateDesc" on-click-arg="{{'item':dsCreateWo.item,'datasource':dsCreateWo,'page':page,'app':app}}" id="test"/>

async updateDesc(evt) {      let workorder = evt.item;      if(workorder) {        workorder["description"] = "Hello World";       } }