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xblock-drag-and-drop-v2's Introduction

Drag and Drop XBlock v2

This XBlock implements a friendly drag-and-drop style problem, where the learner has to drag items to zones on a target image.

The editor is fully guided. Features include:

  • custom target image
  • free target zone positioning and sizing
  • custom zone labels
  • ability to show or hide zone borders
  • custom text and background colors for items
  • image items
  • items prompting for additional (numerical) input after being dropped
  • decoy items that don't have a zone
  • feedback popups for both correct and incorrect attempts
  • introductory and final feedback

The XBlock supports progressive grading and keeps progress across refreshes. All checking and record keeping is done on the server side.

The following screenshot shows the Drag and Drop XBlock rendered inside the edX LMS before the user starts solving the problem:

Student view start

This screenshot shows the XBlock after the learner successfully completed the Drag and Drop problem:

Student view finish

Installation

Install the requirements into the Python virtual environment of your edx-platform installation by running the following command from the root folder:

$ pip install -r requirements.txt

Theming

The Drag and Drop XBlock ships with an alternate theme called "Apros" that you can enable by adding the following entry to XBLOCK_SETTINGS in lms.env.json:

        "drag-and-drop-v2": {
            "theme": {
                "package": "drag_and_drop_v2",
                "locations": ["public/themes/apros.css"]
            }
        }

You can use the same approach to apply a custom theme:

"package" can refer to any Python package in your virtualenv, which means you can develop and maintain your own theme in a separate package. There is no need to fork or modify this repository in any way to customize the look and feel of your Drag and Drop problems.

"locations" is a list of relative paths pointing to CSS files belonging to your theme. While the XBlock loads, files will be added to it in the order that they appear in this list. (This means that if there are rules with identical selectors spread out over different files, rules in files that appear later in the list will take precedence over those that appear earlier.)

Finally, note that the default (unthemed) appearance of the Drag and Drop XBlock has been optimized for accessibility, so its use is encouraged -- especially for courses targeting large and/or potentially diverse audiences.

Enabling in Studio

You can enable the Drag and Drop XBlock in Studio through the Advanced Settings.

  1. From the main page of a specific course, navigate to Settings -> Advanced Settings from the top menu.
  2. Check for the Advanced Module List policy key, and add "drag-and-drop-v2" to the policy value list.
  3. Click the "Save changes" button.

Usage

The Drag and Drop XBlock features an interactive editor. Add the Drag and Drop component to a lesson, then click the EDIT button.

Edit view

In the first step, you can set some basic properties of the component, such as the title, the maximum score, the problem text to render above the background image, the introductory feedback (shown initially), and the final feedback (shown after the learner successfully completes the drag and drop problem).

Drop zone edit

In the next step, you set the URL and description for the background image and define the properties of the drop zones. For each zone you can specify the text that should be rendered inside it (the "zone label"), how wide and tall it should be, and where it should be placed on the background image. In this step you can also specify whether you would like zone labels to be shown to learners or not, as well as whether or not to display borders outlining the zones. It is possible to define an arbitrary number of drop zones as long as their labels are unique.

Drag item edit

In the final step, you define the background and text color for drag items, as well as the drag items themselves. A drag item can contain either text or an image. You can define custom success and error feedback for each item. The feedback text is displayed in a popup after the learner drops the item on a zone - the success feedback is shown if the item is dropped on the correct zone, while the error feedback is shown when dropping the item on an incorrect drop zone.

Additionally, items can have a numerical value (and an optional error margin) associated with them. When a learner drops an item that has a numerical value on the correct zone, an input field for entering a value is shown next to the item. The value that the learner submits is checked against the expected value for the item. If you also specify a margin, the value entered by the learner will be considered correct if it does not differ from the expected value by more than that margin (and incorrect otherwise).

Zone dropdown

The zone that an item belongs to is selected from a dropdown that includes all drop zones defined in the previous step and a none option that can be used for "decoy" items - items that don't belong to any zone.

You can define an arbitrary number of drag items.

Analytics Events

The following analytics events are provided by this block.

edx.drag_and_drop_v2.loaded

Fired when the Drag and Drop XBlock is finished loading.

Example ("common" fields that are not interesting in this context have been left out):

{
...
    "event": {},
    "event_source": "server",                              --  Common field, contains event source.
    "event_type": "edx.drag_and_drop_v2.loaded",           --  Common field, contains event name.
...

Real event example (taken from a devstack):

{
    "username": "staff",
    "event_type": "edx.drag_and_drop_v2.loaded",
    "ip": "10.0.2.2",
    "agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:43.0) Gecko/20100101 Firefox/43.0",
    "host": "precise64",
    "referer": "http://example.com/courses/course-v1:DnD+DnD+DnD/courseware/ec546c58d2f447b7a9223c57b5de7344/756071f8de7f47c3b0ae726586ebbe16/1?activate_block_id=block-v1%3ADnD%2BDnD%2BDnD%2Btype%40vertical%2Bblock%40d2fc47476ca14c55816c4a1264a27280",
    "accept_language": "en;q=1.0, en;q=0.5",
    "event": {},
    "event_source": "server",
    "context": {
        "course_user_tags": {},
        "user_id": 5,
        "org_id": "DnD",
        "module": {
            "usage_key": "block-v1:DnD+DnD+DnD+type@drag-and-drop-v2+block@6b80ce1e8b78426898b47a834d72ffd3",
            "display_name": "Drag and Drop"
        },
        "course_id": "course-v1:DnD+DnD+DnD",
        "path": "/courses/course-v1:DnD+DnD+DnD/xblock/block-v1:DnD+DnD+DnD+type@drag-and-drop-v2+block@6b80ce1e8b78426898b47a834d72ffd3/handler/publish_event"
    },
    "time": "2016-01-13T01:52:41.330049+00:00",
    "page": "x_module"
}

edx.drag_and_drop_v2.item.picked_up

Fired when a learner picks up a draggable item.

Example ("common" fields that are not interesting in this context have been left out):

{
...
    "event": {
      "item_id": 0,                                        --  ID of the draggable item.
    },
    "event_source": "server",                              --  Common field, contains event source.
    "event_type": "edx.drag_and_drop_v2.picked_up",        --  Common field, contains event name.
...

Real event example (taken from a devstack):

{
    "username": "staff",
    "event_type": "edx.drag_and_drop_v2.item.picked_up",
    "ip": "10.0.2.2",
    "agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:43.0) Gecko/20100101 Firefox/43.0",
    "host": "precise64",
    "referer": "http://example.com/courses/course-v1:DnD+DnD+DnD/courseware/ec546c58d2f447b7a9223c57b5de7344/756071f8de7f47c3b0ae726586ebbe16/1?activate_block_id=block-v1%3ADnD%2BDnD%2BDnD%2Btype%40vertical%2Bblock%40d2fc47476ca14c55816c4a1264a27280",
    "accept_language": "en;q=1.0, en;q=0.5",
    "event": {
        "item_id": 0,
    },
    "event_source": "server",
    "context": {
        "course_user_tags": {},
        "user_id": 5,
        "org_id": "DnD",
        "module": {
            "usage_key": "block-v1:DnD+DnD+DnD+type@drag-and-drop-v2+block@6b80ce1e8b78426898b47a834d72ffd3",
            "display_name": "Drag and Drop"
        },
        "course_id": "course-v1:DnD+DnD+DnD",
        "path": "/courses/course-v1:DnD+DnD+DnD/xblock/block-v1:DnD+DnD+DnD+type@drag-and-drop-v2+block@6b80ce1e8b78426898b47a834d72ffd3/handler/publish_event"
    },
    "time": "2016-01-13T01:58:44.395935+00:00",
    "page": "x_module"
}

edx.drag_and_drop_v2.item.dropped

Fired when a learner drops a draggable item.

This event will be emitted when a learner drops a draggable item.

Example ("common" fields that are not interesting in this context have been left out):

{
...
    "event": {
      "input": null,
      "is_correct": true,                                  --  False if there is an input in the draggable item, and the learner provided the wrong answer. Otherwise true.
      "is_correct_location": true,                         --  Whether the draggable item has been placed in the correct location.
      "item_id": 0,                                        --  ID of the draggable item.
      "location": "The Top Zone",                          --  Name of the location the item was dragged to.
    },
    "event_source": "server",                              --  Common field, contains event source.
    "event_type": "edx.drag_and_drop_v2.dropped",          --  Common field, contains event name.
...

Real event example (taken from a devstack):

{
    "username": "staff",
    "event_type": "edx.drag_and_drop_v2.item.dropped",
    "ip": "10.0.2.2",
    "agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:43.0) Gecko/20100101 Firefox/43.0",
    "host": "precise64",
    "referer": "http://example.com/courses/course-v1:DnD+DnD+DnD/courseware/ec546c58d2f447b7a9223c57b5de7344/756071f8de7f47c3b0ae726586ebbe16/1?activate_block_id=block-v1%3ADnD%2BDnD%2BDnD%2Btype%40vertical%2Bblock%40d2fc47476ca14c55816c4a1264a27280",
    "accept_language": "en;q=1.0, en;q=0.5",
    "event": {
        "is_correct_location": true,
        "is_correct": true,
        "location": "The Top Zone",
        "item_id": 0,
        "input": null
    },
    "event_source": "server",
    "context": {
        "course_user_tags": {},
        "user_id": 5,
        "org_id": "DnD",
        "module": {
            "usage_key": "block-v1:DnD+DnD+DnD+type@drag-and-drop-v2+block@6b80ce1e8b78426898b47a834d72ffd3",
            "display_name": "Drag and Drop"
        },
        "course_id": "course-v1:DnD+DnD+DnD",
        "path": "/courses/course-v1:DnD+DnD+DnD/xblock/block-v1:DnD+DnD+DnD+type@drag-and-drop-v2+block@6b80ce1e8b78426898b47a834d72ffd3/handler/do_attempt"
    },
    "time": "2016-01-13T01:58:45.202313+00:00",
    "page": "x_module"
}

edx.drag_and_drop_v2.feedback.opened

Fired when the feedback pop-up is opened.

Example ("common" fields that are not interesting in this context have been left out):

{
...
    "event": {
      "content": "Correct! This one belongs to The Top Zone.",  --  Content of the feedback popup.
      "truncated": false,                                       --  Boolean indicating whether "content" field was truncated.
    },
    "event_source": "server",                                   --  Common field, contains event source.
    "event_type": "edx.drag_and_drop_v2.feedback.opened",       --  Common field, contains event name.
...

Real event example (taken from a devstack):

{
    "username": "staff",
    "event_type": "edx.drag_and_drop_v2.feedback.opened",
    "ip": "10.0.2.2",
    "agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:43.0) Gecko/20100101 Firefox/43.0",
    "host": "precise64",
    "referer": "http://example.com/courses/course-v1:DnD+DnD+DnD/courseware/ec546c58d2f447b7a9223c57b5de7344/756071f8de7f47c3b0ae726586ebbe16/1?activate_block_id=block-v1%3ADnD%2BDnD%2BDnD%2Btype%40vertical%2Bblock%40d2fc47476ca14c55816c4a1264a27280",
    "accept_language": "en;q=1.0, en;q=0.5",
    "event": {
        "content": "Correct! This one belongs to The Top Zone.",
        "truncated": false,
    },
    "event_source": "server",
    "context": {
        "course_user_tags": {},
        "user_id": 5,
        "org_id": "DnD",
        "module": {
            "usage_key": "block-v1:DnD+DnD+DnD+type@drag-and-drop-v2+block@6b80ce1e8b78426898b47a834d72ffd3",
            "display_name": "Drag and Drop"
        },
        "course_id": "course-v1:DnD+DnD+DnD",
        "path": "/courses/course-v1:DnD+DnD+DnD/xblock/block-v1:DnD+DnD+DnD+type@drag-and-drop-v2+block@6b80ce1e8b78426898b47a834d72ffd3/handler/publish_event"
    },
    "time": "2016-01-13T01:58:45.844986+00:00",
    "page": "x_module"
}

edx.drag_and_drop_v2.feedback.closed

Fired when the feedback popup is closed.

Example ("common" fields that are not interesting in this context have been left out):

{
...
    "event": {
      "content": "No, this item does not belong here. Try again." --  Message of the feedback popup that was closed.
      "manually": true,                                           --  Whether or not the user closed the feedback window manually or if it was auto-closed.
      "truncated": false,                                         --  Boolean indicating whether "content" field was truncated.
    },
    "event_source": "server",                                     --  Common field, contains event source.
    "event_type": "edx.drag_and_drop_v2.feedback.closed",         --  Common field, contains event name.
...

Real event example (taken from a devstack):

{
    "username": "staff",
    "event_type": "edx.drag_and_drop_v2.feedback.closed",
    "ip": "10.0.2.2",
    "agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:43.0) Gecko/20100101 Firefox/43.0",
    "host": "precise64",
    "referer": "http://example.com/courses/course-v1:DnD+DnD+DnD/courseware/ec546c58d2f447b7a9223c57b5de7344/756071f8de7f47c3b0ae726586ebbe16/1?activate_block_id=block-v1%3ADnD%2BDnD%2BDnD%2Btype%40vertical%2Bblock%40d2fc47476ca14c55816c4a1264a27280",
    "accept_language": "en;q=1.0, en;q=0.5",
    "event": {
        "content": "No, this item does not belong here. Try again."
        "manually": true
        "truncated": false,
    },
    "event_source": "server",
    "context": {
        "course_user_tags": {},
        "user_id": 5,
        "org_id": "DnD",
        "module": {
            "usage_key": "block-v1:DnD+DnD+DnD+type@drag-and-drop-v2+block@13d1b859a2304c858e1810ccc23f29b2",
            "display_name": "Drag and Drop"
        },
        "course_id": "course-v1:DnD+DnD+DnD",
        "path": "/courses/course-v1:DnD+DnD+DnD/xblock/block-v1:DnD+DnD+DnD+type@drag-and-drop-v2+block@13d1b859a2304c858e1810ccc23f29b2/handler/publish_event"
    },
    "time": "2016-01-13T02:07:00.988534+00:00",
    "page": "x_module"
}

Testing

Inside a fresh virtualenv, cd into the root folder of this repository (xblock-drag-and-drop-v2) and run

$ sh install_test_deps.sh

You can then run the entire test suite via

$ python run_tests.py

To only run the unit test suite, do

$ python run_tests.py tests/unit/

Similarly, you can run the integration test suite via

$ python run_tests.py tests/integration/

xblock-drag-and-drop-v2's People

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