How to check Connected Blocks

[ARYAN]

Hey I have two blocks one is "bot" which is input_statement type and other is "questions" which is dropdown type  So the questions block goes inside the  bot block and I want to check if they are connected or not . here is the definitions of two blocks  . please reply fast it's urgent .

..................Code...................

Blockly.defineBlocksWithJsonArray([

    {

      "type": "bot",

      "message0": "Bot %1",

      "args0": [

        {

          "type": "input_statement",

          "name": "VALUE",

        }

      ],

      "colour": 300

    }

  ]);

Blockly.defineBlocksWithJsonArray([

    {

      "type": "questions",

      "message0": "Question %1 ",

      "args0": [

        {

          "type": "field_dropdown",

          "name": "QUESTION",

          "options": [

            ["What is the date today?", `Today is ${today}`],

            ["What is the time now?", ` It's ${time}` ],

            ["How are you?", "I'm fine sir , How about you ?"],

            ["What is JavaScript?", "JavaScript is a text-based programming language used both on the client-side and server-side that allows you to make web pages interactive"],

            ["What is your name?", "My name is Aryan ."]

          ]

        }

      ],"previousStatement": null,

      "colour": 300

    }

  ]);  

Blockly.JavaScript["bot"] = function(block) {

  var txe="hello";

  var code = `

  var inputTexntValue = "${txe}";

  `;

  return code;

};

Blockly.JavaScript["questions"] = function (block) {

  var text_input = block.getFieldValue("QUESTION");

  var code = `

    var inputTextValue="${text_input}"

  `;

  return code;

};

[Aaron Dodson]

Hi,

There are a few options for doing this; it depends a bit on where in the code you're trying to check, but generally I'd do something along the lines of 

// Get all the question blocks in the workspace

const questionBlocks = Blockly.getMainWorkspace().getBlocksByType('questions');

// Go through the question blocks and check their parent block, ie the one they are attached to. If it's null, the block is not attached;

// If the block is attached, verify that the parent block is a Bot block
for (const block of questionBlocks) {

    const parent = block.getParent();

    console.log(parent && parent.type === 'bot');

}

You could also invert this by looking for Bot blocks and checking their children.

[ARYAN]

Thanks man for helping me out , I really appreciate it.