How to make connection between blocks dynamically though script

[Sujil V.S]

Hello,

I want to plug the dynamically generated blocks to a parent block. Please consider the following image

Here you can see for the same statement block there are 2 connections. I want to attach few of the blocks to "Connection_01" and another block to "Connection_02". Is there any way to do this. 

Please find the code for the block

Block.js

Blockly.Blocks['parallel_actions'] = {

  init: function() {

    this.appendStatementInput("PARALLEL_ACTIONS")

        .setCheck(null)

        .appendField("Do Parallel Execution");

    this.setPreviousStatement(true, null);

    this.setNextStatement(true, null);

    this.setColour(240);

    this.setTooltip('');

    this.setHelpUrl('http://www.example.com/');

  }

};

JavaScript.js

Blockly.JavaScript['parallel_actions'] = function(block) {

  var statements_parallel_actions = Blockly.JavaScript.statementToCode(block, 'PARALLEL_ACTIONS', Blockly.JavaScript.ORDER_ATOMIC);

  // TODO: Assemble JavaScript into code variable.

  var code = ' ';

  if(statements_parallel_actions == '')

  {

    code = ' ';

  }

  else

  {

    statements_parallel_actions = statements_parallel_actions.substring(1, statements_parallel_actions.length - 1);

    statements_parallel_actions = statements_parallel_actions.split('Pause();').join('');

    code = statements_parallel_actions + 'Pause();\n';

  }

  return code;

};

Can any one help me with this?

Thanks in advance

Sujil V S

[Wolfgang Koehler]

I do it like this:

      var parentConnection = parentBlock.getInput(name).connection;
      var childBlock = workspace.newBlock(name);
      childBlock.initSvg();
      childBlock.render();
      var childConnection = childBlock.previousConnection;
      parentConnection.connect(childConnection);

You have .previousConnection, .nextConnection or .getInput(name).connection

[Sujil V.S]

Hello,

PFA,

I have already 2 blocks are there in my works space. Consider the first block as parent block and the next one is child block. How to connect them using script? 

[Sujil V.S]

The block.js contents for Node Head block is:

Blockly.Blocks['node_head'] = {

  init: function() {

    this.appendDummyInput()

        .appendField("Node Head");

    this.setPreviousStatement(true, null);

    this.setNextStatement(true, null);

    this.setColour(50);

    this.setTooltip('');

    this.setHelpUrl('http://www.example.com/');

  }

};

Its appending a DummyInput. So for the following code

  var parentConnection = parentBlock.getInput(name).connection;

what should we given in the place of name?

[Henok Getachew]

A dummy input can't be connected. You have to use one of the other two types of inputs, which provide a 'NAME' attribute, then you can use that 'NAME' attribute to be an argument for getInput. here is an example

Blockly.Blocks['function_a'] = {

  init: function() {

    this.appendDummyInput().appendField("FunctionA");

    this.appendStatementInput("input-name").setCheck(null);

    this.setPreviousStatement(false, null);

    this.setColour(FUNCTION_CATEGORY_COLOR);

    this.setTooltip("");

    this.setHelpUrl("");

  }

};

parentBlock.getInput("input-name").connection;