celeryjs

JavaScript module for asynchronously handling Celery task results from the browser.

Requirements

At least jQuery 1.5. Not tested in jQuery 2.0.

How it works

celeryjs uses a combination of setTimeout and setInterval with jQuery.ajax and Deferred Object.

Usage

celeryjs exposes a single function CeleryJS that returns a Deferred Object.

var celery = CeleryJS({
    url: '/task/.../status',
    checkInterval: 3000,  // (default) milliseconds
    ajax: {               // (default) options passed to jQuery.ajax
        cache: false,
        dataType: 'json',
    }
});
// Called when task.status is not SUCCESS or FAILURE (e.g. PENDING)
celery.progress(function(task) {
    updateTaskStatus(task.status);
});
// Called when task.status is FAILURE or the ajax request fails
celery.fail(function(task) {
    displayError(task);
});
// Called when task.status is SUCCESS
celery.done(function(task) {
    displayResult(task.result);
});
// Always called
celery.always(function(task) {
    hideLoadingSpinner();
});

Celery task status format

celeryjs expects the URL that you pass to it to return a JSON object that has the format below.

{
    task: {
        status: "SUCCESS"|"FAILURE"|"..."
    }
}

task.status corresponds to AsyncResult.state.

Additional keys and values may be present.

The above JSON object is a subset of the format used by django-celery's celery-task_status URL.