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AJAX call to get some records

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by Alexandre Ribeiro.  

So i'm trying to use ajax call by the documentation so my js function is:

var promises = ajax.call([{

                methodname: 'block_cdtexpflowchart_get_workflow_steps',

                args: { workflowid: workflowID }

            }]);


        promises[0].done(function (response) {

            console.log('------------response------------');

            console.log(response);

        }).fail(function(ex){

            console.log('------------ ERROR ------------');

            console.log(ex);

        });


i've created a services.php file in db folder of my plugin:


$functions = array(

    'block_cdtexpflowchart_get_workflow_steps' => array(//web service function name

        'classname' => 'block_cdtexpflowchart_external', //class containing the external function

        'methodname' => 'get_workflow_steps', //external function name

        'description' => 'return a list of steps for the given workflow id', //human readable description of the web service function

        'type' => 'read', //database rights of the web service function (read, write)

        'ajax' => true,

        'services' => array(MOODLE_OFFICIAL_MOBILE_SERVICE)    // Optional, only available for Moodle 3.1 onwards. List of built-in services (by shortname) where the function will be included.  Services created manually via the Moodle interface are not supported.

    ),

);


$services = array('Moodle mobile web service' => array('functions' => array('block_cdtexpflowchart_get_workflow_steps')));


and i've created too a function declaration, and _parameters and _return in my external.php file in the root of my plugin


public static function get_workflow_steps($workflowid)

    {

        global $CFG, $DB;


        return $DB->get_records_sql('SELECT stepstable.id, stepstable.workflowid, stepstable.stepno,'

                        . 'stepstable.name, stepstable.instructions, stepstable.onactivescript, stepstable.oncompletescript '

                        . 'FROM block_workflow_steps stepstable '

                        . 'WHERE stepstable.workflowid = ?', array($workflowid));

    }


so, when i test this, i get the error :

Error: missing response(…)




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