I can't get generate code about user custom function

[남승인]

Hello, dears~

There is one strange thing during my project development, so please contact us.

When 'Block' is selected through the 'Blockly.Events.SELECTED' event listener, there are the following parameters.

function OnSelected(event){

          var workspaceId = event.workspaceId;

          var blockId = event.blockId;

          var oldElementId = event.oldElementId; // string

          var newElementId = event.newElementId; // string

          selectedBlock = newElementId;

        }

Most of the parameters are OK, but -

User functions created inside Blockly cannot normally obtain the generated code about next.

let blockCode = Blockly.Lua.blockToCode(workspace.getBlockById(selectedBlock),true);

In most cases, normal generated code is provided as a string in 'blockCode', The user custom function does not give any value.

is this a bug? Or is this a feature not yet supported? or am i doing something wrong?

Thanks and  reguards~

[Neil Fraser]

Correct, the function definition blocks don't return code when calling blockToCode.  Instead, they add the code to a property on `JavaScript.definitions_`, before returning null.  That allows all the function definitions to be generated at the top of the program (something languages such as JavaScript don't care about, but languages such as Python really do).

See here:

https://github.com/google/blockly/blob/develop/generators/javascript/procedures.js#L58

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Neil Fraser, Switzerland
https://neil.fraser.name