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TWEBLOOKUPCOMBOBOX - Error loading the Value property.

WEB TMS WEB Core
#1

I'm using the TWebLookUpComboBox object in my project. I load its content in a procedure where I receive the response from an API and build the pairs using JSON, and this works perfectly. My issue arises when I try, in another procedure, to change the value of this combobox so that the display is altered, but the element doesn't change at all.

I created a test case with 2 buttons and 3 boxes where:

Button 1, when clicked, loads the pairs into the first box's items and successfully sets the value to 5. Button 2, when clicked, sets the value to 1 with three different results:

  • In the first result: Box 1, where the ElementeID is linked to the HTML, is only updated using a JavaScript function to force the update.
  • In the second result: Box 2, where ElementeID is NOT linked, is updated correctly without using an extra function.
  • In the third result: Box 3, where ElementeID is linked to the HTML, is NOT updated as expected when using box3.value := '1'.

Here's the test case.

#2

Was a sample source project supposed to be included?

#3

Could you send me an email address please?

#4

help@tmssoftware.com

#5

The email has been sent

#6

Hi Bruno, how are you? Do you have any predictions about this error?

#7

It is on my todolist, I have been out of office past 4 days...

#8

Alright, thank you

#9

You have this script in your code

  $('.select2bs4').select2({
        theme: 'bootstrap4',
        placeholder: "Selecione uma opção",
    });

and this transforms the HTML SELECT elements into a combination of <UL> and <LI> elements.

When TWebLookupComboBox is linked to a HTML element, it expects a SELECT element with elements, so this JavaScript code you added breaks the linking between TWebLookupComboBox and the SELECT element in the template.

#10

Good morning Bruno,

Do you have any suggestions to make this work?

#11

Remove this piece of JavaScript code and leave the combobox to be a SELECT element

#12

I am attaching an example in Visual Studio Code of using Select2 in conjunction with WebCombobox, I believe it may help others who have the same question. Thanks.
TMSWEBCORE_SELECT2.zip (851.7 KB)

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