Get type of connected output port

[Bart Butenaers]

Hi folks,

I have a block that can accept on its input both Dates or Strings:

Blockly.Blocks['myBlock'] = {
    init: function () {
        this.jsonInit({
            ...
            "args0": [
                {
                    "type": "input_value",
                    "name": "someDate",
                    "check": ["String", "Date"]
                },
            ],
            ...
        });
    }
};

This means that I could connect this input to the output of another block that generates e.g. a Date:

Blockly.Blocks['myOtherBlock'] = {
    init: function () {
        this.jsonInit({
            ...
            "output": "Date",
            ...
        });
    }
};

In my code generator I would like to do some extra stuff when the input is connected to a "Date" output port:

Blockly.JavaScript['myBlock'] = function (block) {
   var code;
   if (output connected to "someDate" input is "Date" ?????????????????? ) ....
   
   return [code, Blockly.JavaScript.ORDER_ATOMIC];
};

Does anybody know how I write this test ???

Could I someway use e.g. getInput("someDate").connection ....

Thanks !!!!

Bart

[Rachel Fenichel]

You're on the right track: get your input by name, then get its connection.  

var myConnection;
var targetConn = myConnection.targetConnection;

Then you can inspect the checks on the target:

var targetTypes = targetConn.checks_;

It's an array, so you will need to check length and/or just grab the first one.

It looks like we don't have a way to expose the checks_ array without just inspecting it directly.  I'll file a bug for that.

Rachel

[Bart Butenaers]

Hi Rachel,

Thanks !!

PS. Once you have created an issue, could you please share the link to it here?

Kind regards,

Bart

[Rachel Fenichel]

Here's the bug, but it's already been fixed on develop thanks to @duzc2.

Cheers,

Rachel