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Front-end for the Open edX course experience, implemented using React and Paragon.

License: GNU Affero General Public License v3.0

JavaScript 97.94% Makefile 0.15% HTML 0.04% Shell 0.05% SCSS 1.80% CSS 0.01%
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frontend-app-learning's Introduction

frontend-app-learning

codecov license

Purpose

This is the Learning MFE (micro-frontend application), which renders all learner-facing course pages (like the course outline, the progress page, actual course content, etc).

Please tag @edx/engage-squad on any PRs or issues. Thanks.

Getting Started

Prerequisites

The devstack is currently recommended as a development environment for your new MFE. If you start it with make dev.up.lms that should give you everything you need as a companion to this frontend.

Note that it is also possible to use Tutor to develop an MFE. You can refer to the relevant tutor-mfe documentation to get started using it.

To use this application, devstack must be running and you must be logged into it.

Cloning and Startup

1. Clone your new repo:

  ``git clone https://github.com/openedx/frontend-app-learning.git``

2. Use node v18.x.

  The current version of the micro-frontend build scripts support node 18.
  Using other major versions of node *may* work, but this is unsupported.  For
  convenience, this repository includes an .nvmrc file to help in setting the
  correct node version via `nvm <https://github.com/nvm-sh/nvm>`_.

3. Install npm dependencies:

  ``cd frontend-app-learning && npm ci``

4. Start the dev server:

  ``npm start``

Local module development

To develop locally on modules that are installed into this app, you'll need to create a module.config.js file (which is git-ignored) that defines where to find your local modules, for instance:

module.exports = {
  /*
  Modules you want to use from local source code.  Adding a module here means that when this app
  runs its build, it'll resolve the source from peer directories of this app.

  moduleName: the name you use to import code from the module.
  dir: The relative path to the module's source code.
  dist: The sub-directory of the source code where it puts its build artifact.  Often "dist", though you
    may want to use "src" if the module installs React as a peer/dev dependency.
  */
  localModules: [
     { moduleName: '@openedx/paragon/scss', dir: '../paragon', dist: 'scss' },
     { moduleName: '@openedx/paragon', dir: '../paragon', dist: 'dist' },
     { moduleName: '@openedx/frontend-enterprise', dir: '../frontend-enterprise', dist: 'src' },
     { moduleName: '@openedx/frontend-platform', dir: '../frontend-platform', dist: 'dist' },
  ],
};

See https://github.com/openedx/frontend-build#local-module-configuration-for-webpack for more details.

Deployment

The Learning MFE is similar to all the other Open edX MFEs. Read the Open edX Developer Guide's section on MFE applications.

Plugins

This MFE can be customized using Frontend Plugin Framework.

The parts of this MFE that can be customized in that manner are documented here.

Environment Variables

This MFE is configured via environment variables supplied at build time. All micro-frontends have a shared set of required environment variables, as documented in the Open edX Developer Guide under Required Environment Variables.

The learning micro-frontend also supports the following additional variables:

CREDIT_HELP_LINK_URL
A link to resources to help explain what course credit is and how to earn it.
ENABLE_JUMPNAV
Enables the new Jump Navigation feature in the course breadcrumbs, defaulted to the string 'true'. Disable to have simple hyperlinks for breadcrumbs. Setting it to any other value but 'true' ('false','I love flags', 'etc' would disable the Jumpnav). This feature flag is slated to be removed as jumpnav becomes default. Follow the progress of this ticket here: https://openedx.atlassian.net/browse/TNL-8678
SOCIAL_UTM_MILESTONE_CAMPAIGN

This value is passed as the utm_campaign parameter for social-share links when celebrating learning milestones in the course. Optional.

Example: milestone

SUPPORT_URL_CALCULATOR_MATH

A link that explains how to use the in-course calculator. You can use the one in the example below, if you don't want to have your own branded version.

Example: https://support.edx.org/hc/en-us/articles/360000038428-Entering-math-expressions-in-assignments-or-the-calculator

SUPPORT_URL_ID_VERIFICATION

A link that explains how to verify your ID. Shown in contexts where you need to verify yourself to earn a certificate. The example link below is probably too edx.org-specific to use for your own site.

Example: https://support.edx.org/hc/en-us/articles/206503858-How-do-I-verify-my-identity

SUPPORT_URL_VERIFIED_CERTIFICATE

A link that explains what a verified certificate is. You can use the one in the example below, if you don't want to have your own branded version. Optional.

Example: https://support.edx.org/hc/en-us/articles/206502008-What-is-a-verified-certificate

TWITTER_HASHTAG

This value is used in the Twitter social-share link when celebrating learning milestones in the course. Will prefill the suggested post with this hashtag. Optional.

Example: brandedhashtag

TWITTER_URL

A link to your Twitter account. The Twitter social-share link won't appear unless this is set. Optional.

Example: https://twitter.com/edXOnline

Getting Help

If you're having trouble, we have discussion forums at https://discuss.openedx.org where you can connect with others in the community.

Our real-time conversations are on Slack. You can request a Slack invitation, then join our community Slack workspace. Because this is a frontend repository, the best place to discuss it would be in the #wg-frontend channel.

For anything non-trivial, the best path is to open an issue in this repository with as many details about the issue you are facing as you can provide.

https://github.com/openedx/frontend-app-learning/issues

For more information about these options, see the Getting Help page.

Contributing

Contributions are very welcome. Please read How To Contribute for details.

This project is currently accepting all types of contributions, bug fixes, security fixes, maintenance work, or new features. However, please make sure to have a discussion about your new feature idea with the maintainers prior to beginning development to maximize the chances of your change being accepted. You can start a conversation by creating a new issue on this repo summarizing your idea.

The Open edX Code of Conduct

All community members are expected to follow the Open edX Code of Conduct.

License

The code in this repository is licensed under the AGPLv3 unless otherwise noted.

Please see LICENSE for details.

Reporting Security Issues

Please do not report security issues in public. Please email [email protected].

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frontend-app-learning's Issues

Issues with '@edx/frontend-platform/auth'

I am trying to develop a custom MFE with MFE template. I have configured the environment variables following the documentation. However, after running npm start, I have an error message with REFRESH_ACCESS_TOKEN_ENDPOINT when get authenticated and fetch authenticated user. Can anyone help me resolve this issue. I appreciate this a lot!

After resetting I can submit again without selecting a new option and it uses the previous submit value

Expected behavior

The "Submit" button should be disabled after clicking reset option.

Actual behavior

After clicking the "Reset" button, questions are reset, but the "Submit" button stays active and clickable. If the user clicks the "Submit" button without selecting any option, it is marked incorrect.

Reset.Option.Issue.mov

Steps to reproduce

  1. Navigate to a common problem type component (SCQ, MCQ ) in the course.
  2. Attempt a question and submit an incorrect answer.
  3. Click the "Reset" button to reset the question.
  4. Click the submit button without selecting any option.
  5. Observe the behavior.

Additional information

  1. This issue affects all common problem components.

Original issue: openedx/wg-build-test-release#362

Rewrite calculator supported constants

So in calcualtor examples tables in list some constants that are no longer supported:

<FormattedMessage
id="calculator.instruction.table.to.use.constants"
defaultMessage="Constants"
/>
</th>
<td dir="auto">c, e, g, i, j, k, pi, q, T</td>
<td dir="auto">
<ul className="list-unstyled m-0">
<li>20*c</li>
<li>418*T</li>

In calcuator V3 some constants are removed, hence: openedx/openedx-calc@5e75af6

Also this might lead to affiex tip to not work as expected, so may be this also need to be removed:

Incorrect id for a message

Because one of our users complained of a wrong translation, I found something that may be confusing.

In
src/alerts/course-start-alert/CourseStartAlert.jsx
shouldn't
id="learning.outline.alert.end.long" really be
id="learning.outline.alert.start.long" ?

README file broken

Right now the title section has an extra # and caused the readme break.

Untranslatable strings

The Following is a list of strings that are hardcoded, untranslatable

  1. View course in
    <span className="mr-2 mt-1 col-form-label">View course in:</span>
  2. Specific Student...
  3. View this course as:
    <span className="col-auto col-form-label pl-3">View this course as:</span>

Dependency Dashboard

This issue lists Renovate updates and detected dependencies. Read the Dependency Dashboard docs to learn more.

Rate-Limited

These updates are currently rate-limited. Click on a checkbox below to force their creation now.

  • fix(deps): update dependency @edx/frontend-platform to v7.1.4
  • fix(deps): update dependency @edx/openedx-atlas to v0.6.1
  • chore(deps): update dependency sass-loader to v14.2.1
  • fix(deps): update dependency @edx/frontend-component-header to v5.3.3
  • fix(deps): update dependency @edx/frontend-lib-learning-assistant to v2.1.2
  • fix(deps): update dependency @edx/frontend-lib-special-exams to v3.1.0
  • fix(deps): update dependency @edx/react-unit-test-utils to v2.1.1
  • fix(deps): update dependency @openedx/frontend-plugin-framework to v1.2.1
  • fix(deps): update dependency @openedx/paragon to v22.6.0
  • fix(deps): update dependency classnames to v2.5.1
  • fix(deps): update dependency core-js to v3.37.1
  • fix(deps): update dependency joi to v17.13.1
  • fix(deps): update dependency regenerator-runtime to v0.14.1
  • fix(deps): update dependency truncate-html to v1.1.1
  • chore(deps): update actions/checkout action to v4
  • chore(deps): update actions/setup-node action to v4
  • chore(deps): update dependency @openedx/frontend-build to v14
  • chore(deps): update dependency @pact-foundation/pact to v12
  • chore(deps): update dependency copy-webpack-plugin to v12
  • chore(deps): update dependency es-check to v7
  • chore(deps): update dependency husky to v9
  • chore(deps): update dependency jest to v29
  • chore(deps): update dependency node to v20
  • chore(deps): update dependency style-loader to v4
  • chore(deps): update testing-library monorepo (major) (@testing-library/jest-dom, @testing-library/react, @testing-library/user-event)
  • fix(deps): update dependency @edx/frontend-platform to v8
  • fix(deps): update dependency @reduxjs/toolkit to v2
  • fix(deps): update dependency query-string to v9
  • fix(deps): update dependency react-redux to v9
  • fix(deps): update dependency react-share to v5
  • fix(deps): update dependency redux to v5
  • fix(deps): update dependency reselect to v5
  • 🔐 Create all rate-limited PRs at once 🔐

Open

These updates have all been created already. Click a checkbox below to force a retry/rebase of any.

Detected dependencies

github-actions
.github/workflows/add-depr-ticket-to-depr-board.yml
.github/workflows/add-remove-label-on-comment.yml
.github/workflows/commitlint.yml
.github/workflows/lockfileversion-check.yml
.github/workflows/self-assign-issue.yml
.github/workflows/update-browserslist-db.yml
.github/workflows/validate.yml
  • actions/checkout v3
  • actions/setup-node v3
  • codecov/codecov-action v4
npm
package.json
  • @edx/brand ^1.2.2
  • @edx/frontend-component-header ^5.0.2
  • @edx/frontend-lib-learning-assistant ^2.0.0
  • @edx/frontend-lib-special-exams ^3.0.1
  • @edx/frontend-platform ^7.1.2
  • @edx/openedx-atlas ^0.6.0
  • @edx/react-unit-test-utils 2.0.0
  • @fortawesome/fontawesome-svg-core 1.3.0
  • @fortawesome/free-brands-svg-icons 5.15.4
  • @fortawesome/free-regular-svg-icons 5.15.4
  • @fortawesome/free-solid-svg-icons 5.15.4
  • @fortawesome/react-fontawesome ^0.1.4
  • @openedx/frontend-plugin-framework ^1.1.2
  • @openedx/frontend-slot-footer ^1.0.2
  • @openedx/paragon ^22.3.0
  • @popperjs/core 2.11.8
  • @reduxjs/toolkit 1.8.1
  • classnames 2.3.2
  • core-js 3.22.2
  • history 5.3.0
  • joi ^17.11.0
  • js-cookie 3.0.5
  • lodash.camelcase 4.3.0
  • prop-types 15.8.1
  • query-string ^7.1.3
  • react 17.0.2
  • react-dom 17.0.2
  • react-helmet 6.1.0
  • react-redux 7.2.9
  • react-router 6.15.0
  • react-router-dom 6.15.0
  • react-share 4.4.1
  • redux 4.1.2
  • regenerator-runtime 0.13.11
  • reselect 4.1.8
  • truncate-html 1.0.4
  • util 0.12.5
  • @edx/browserslist-config 1.2.0
  • @edx/reactifex 2.2.0
  • @openedx/frontend-build 13.1.4
  • @pact-foundation/pact ^11.0.2
  • @testing-library/jest-dom 5.16.5
  • @testing-library/react 12.1.5
  • @testing-library/react-hooks ^8.0.1
  • @testing-library/user-event 13.5.0
  • axios-mock-adapter 1.20.0
  • copy-webpack-plugin ^11.0.0
  • es-check 6.2.1
  • eslint-import-resolver-webpack ^0.13.8
  • husky 7.0.4
  • jest ^26.6.3
  • jest-console-group-reporter ^1.0.1
  • jest-when ^3.6.0
  • patch-package ^8.0.0
  • postcss-loader ^8.1.1
  • rosie 2.1.1
  • sass ^1.72.0
  • sass-loader ^14.1.1
  • source-map-loader ^5.0.0
  • style-loader ^3.3.4
nvm
.nvmrc
  • node 18

  • Check this box to trigger a request for Renovate to run again on this repository

Sidebar navigation takes over half the width of the page when Indigo theme is used

Steps to Reproduce

  1. Login to an instance using the Indigo theme as an admin user to ensure the courseware.enable_navigation_sidebar waffle flag is enabled
  2. Navigate to an in-course experience page
  3. With the sidebar navigation expanded, view the page

Expected Behavior

  1. The sidebar navigation when expanded takes up much less than half of the page horizontally (see attached image from an in-course experience page using the Open edX theme)
  2. There is a reasonable amount of blank space on either side of the course content/sidebar content
    Screenshot 2024-05-31 at 4 00 48 PM

Expected Behavior

  1. The sidebar navigation when expanded takes up half of the page horizontally (see attached image from an in-course experience page using the Indigo theme)
  2. There is a lot of extra blank space on either side of the course content/sidebar content
    Screenshot 2024-05-31 at 3 58 51 PM

Upgrade React JS to v17

This repo is currently using React JS v16. We need to upgrade it to React 17 before moving to latest React version(v18).
React 17 doesn’t add any new developer-facing features, so its upgrade might not cause any breaking changes. Our end goal is to upgrade React to v18 but v18 no longer support enzyme, so we are upgrading to React 17 and then we’ll migrate from enzyme.

Epic Link

React 17 upgrade

Switch to Ansible-free Docker image

In order to advance implementation of both OEP-45: Configuring and Operating Open edX and openedx/public-engineering#51, we would like to switch devstack from using primarily Docker images built with Ansible code from the configuration repository to images built from Dockerfiles in each service's repository. We hope this will also help simplify Tutor by providing better base images to derive from, with fewer workarounds and duplicated code blocks required in Tutor.

A/C

Ensure that the repo's Dockerfile can create a base image which is appropriate for small production installations
Ensure that the repo's Dockerfile also defines an additional image derived from the base which adds dependencies and configuration changes needed for development environments
Check with the Tutor developers during code review to see if any further changes to the Dockerfile would help simplify Tutor
Automate uploads of both images when code changes are merged
Switch devstack to use the new Ansible-free development image, and do some basic testing to ensure it works before merging

Sidebar weird behavior when course is not completly live/scheduled

Expected behavior

As a user, I want to be able to navigate between sections if I'm on the locked unit so that I can easily return to the section with the prerequisite and finish the assignment

Actual behavior

As a user, I CANNOT navigate between sections if I'm on the locked unit so that I have to return to the outline and spend additional time trying to figure out what is going on

Steps to reproduce

  1. Enrol into the course with subsections with prerequisites (I created this one for test).
  2. Start with any subsection.
  3. Go to the "locked unit" - with the pre-requisite on the subsection.
  4. There are no sections and subsections, just a "course outline".
Screen.Recording.2024-05-23.at.17.22.02.mov

Additional information

I'm testing it with the staff user, through Audit mode (maybe it affects smth).

As a student, this happened: openedx/wg-build-test-release#363 (comment). I don't think this is related to the sidebar itself.

This issue was reported as part of the redwood testing process: #1385

`PUBLIC_PATH` support is not working anymore after react router v6 upgrade

Context:

In the past, The learning MFE used to support subdirectory paths i.e. PUBLIC_PATH. This helps the deployment of learning MFE in subdirectories and accessing it through an exposed PUBLIC_PATH.

Example

Suppose we have a use case where we want to access Learning MFE from a subdirectory on a path e.g. /learn instead of /. To do this in the past, we would add a config variable i.e. PUBLIC_PATH='/learn/' in .env.development (In case of local instance). Once done the learning MFE can be accessed at localhost:2000/learn/course/....

Issue

It looks like after feat: upgrade react router to v6 the PUBLIC_PATH is not working anymore. This could probably be because of some missing configurations in the new ReactRouter version (v6) to support this.

OR

A possible solution is that we have defined routes like HOME: '/course/:courseId/home', Which would not care if there is any PUBLIC_PATH defined. We should probably refactor these to use the PUBLIC_PATH. A reference for how this can be done can be seen in Discussions MFE.

Electronic Sound Experiment (demo course) not working

The Electronic Sound Experiment (demo course - week 2 / lesson 2) gives an error:

TypeError: Cannot set properties of undefined (setting 'diagram') The tool is disabled.

The legacy view works without problems.

Left-sidebar navigation automatically takes over whole screen when the window is minimized

Steps to Reproduce

  1. Login as an admin user to ensure the courseware.enable_navigation_sidebar waffle flag is enabled
  2. Navigate to an in-course experience page
  3. With the sidebar navigation expanded, minimize the browser window
  4. Use your curser to make the window more narrow

Expected Behavior

  1. The sidebar navigation remains expanded until a certain breakpoint (the point at which both the sidebar navigation and the course content can no longer fit side by side)
  2. Once the window gets to the breakpoint described in Expected Behavior 1, the course content takes up the screen and the sidebar navigation expand button appears in the upper corner of the page
  3. When the expand button is clicked, the sidebar navigation can take up the entire width of the window, but must be collapsable

Expected Behavior

  1. The sidebar navigation remains expanded until a certain breakpoint (this current breakpoint feels sooner than the point at which both the sidebar navigation and the course content can no longer fit side by side)
  2. Once the window gets to the breakpoint described in Actual Behavior 2, the sidebar navigation can take up the entire width of the window, but is collapsable

Make nav buttons links under the hood (a11y)

The Next, Previous, and jump-to-unit buttons in the Learning MFE are currently buttons that trigger a JS handler, which triggers a redirect.

It would be more semantically friendly to make these into links (under the hood; they will look the same). We can probably do this by passing the next/prev URLs into the code that renders the sequence.

image

Problem with notes visibility feature

This issue is related to the BTR issue openedx/wg-build-test-release#227 in the context of the Nutmeg release work. The testing of the cases was performed in the BTR Olive instance.

There's a problem due to a discrepancy between the management of the notes visibility in the MFE and the Iframe serving an xblock unit content.

The notes visibility is meant to be controlled by a student preference called "edxnotes_visibility", which is stored in the table courseware_xmodulestudentinfofield. If the preference is not present for the currently logged-in user, the notes visibility is enabled by default. The unit content in a courseware page is loaded through an Iframe inside the MFE, and the preference value determines if the notes are highlighted or not when the unit is loaded.

However, the MFE notes visibility ignores the aforementioned user preference and determines the visibility based on the course metadata info extracted from a courseware API call. This API returns the values for notes in the format below:

notes:
  enabled: true
  visible: true

And this API always returns the visible field with a true value, not taking into account the "edxnotes_visibility" preference of the user. This affects the behavior of the button that toggles the notes visibility, due to the discrepancy between the notes visibility state of the unit Iframe and the MFE.

The notes visibility value in the MFE should be extracted from another source to get the value of the user preference (or make the courseware API in the LMS aware of the user calling it?).

Loading course home when courses' date is in the future fails

Description

After creating a new course in my nightly installation, and then trying to view it live the learning MFE fails:

Screencast.from.22-11-23.14.09.38.webm

This was also reported by a quince release tester: openedx/wg-build-test-release#319
When changing the course start date from Studio the error disappears.

How to reproduce

  1. Create a new course using quince or tutor nightly
  2. View course live
  3. Try accessing: HTTP(s)://<MFE_HOST>/learning/course/<COURSE_ID>/home

Node 20 upgrade

Description

See the parent ticket for the general description and motivation, openedx/public-engineering#267.

Tasks

Analytic event broken

Hi all, it looks like we lost the code that sends analytics events to the LMS when links to external resources are clicked. The platform version of this code is here: https://github.com/openedx/edx-platform/blob/1f3d23250926751acb80aaba6a6bc3b4d7ac3f42/lms/static/js/courseware/courseware_factory.js#L12 but I think it got lost in the MFE transition.

This is an event that we use for analytics and would like to have back. I'm not sure who's maintaining at this point, but I'd like to chat about how we can do that!

Expand All button is not working correctly

"The 'Expand All' button functionality appears to be malfunctioning. Despite expanding all sections, the button label remains as 'Expand All'. Upon clicking the 'Expand All' button, the label changes to 'Collapse All', indicating the intended action. Similar case for vice versa (Collapsing all sections still shows 'Collapse all' text on button instead of 'Expand All'. As in the below image, all sections are collapsed, the button should show 'Expand All' text rather than 'Collapse All'.

Screenshot 2024-03-04 at 4 07 53 PM

Bug: Left-sidebar navigation - Sections and subsections being marked as complete when not all units completed

  1. Steps to Reproduce
  • When I have the left-sidebar navigation enabled on my instance and I navigate to an in-course experience page
  1. Expected Result
  • Then I see that the sections/subsections with all subsections/units completed show a completion checkmark
  1. Actual Result
  • I sometimes (see note) see the completion check mark next to every section and subsection even for sections/subsections containing incomplete units

Note:

  • I am not certain exactly what I did that triggered this behavior. I was testing the left-sidebar navigation, I clicked the progress tab, and went back into the course and saw this behavior. I went back to the dashboard, selected the course I was testing, clicked resume course and saw the behavior went away, went back to the course outline and clicked a course unit in the outline and the behavior returned. Now I can't seem to get it back to normal.
    Screenshot 2024-05-08 at 4 36 17 PM

[RTL] Progress Grade Bar tooltips initial bad positioning

In RTL languages (e.g. Arabic), the grade bar in the progress tab is badly positioned initially.
image

But after scrolling or resizing the window, popperjs auto positioning kicks in to make correction.
image

The goal of this issue is to solve the initial unexplained position shift to the left.
I think popperjs does a great job with positioning, so something might be wrong either with learning MFE or Paragon's code.

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