gitlab-org / gitlab-discussions

GitLab Discussions: Code Overview

File Structure:

  • app/assets/javascripts/discussions/ - Frontend JavaScript code for Discussions.
    • discussions.js - Main entry point for Discussions functionality.
    • components/ - Individual components used for discussions (e.g., DiscussionList.vue, DiscussionForm.vue).
    • utils/ - Helper functions and utilities.
  • app/models/discussion.rb - Ruby model representing a Discussion.
  • app/controllers/discussions_controller.rb - Controller managing CRUD operations for discussions.
  • app/views/discussions/ - View files for rendering Discussions.
  • db/migrate/ - Database migration files for Discussions.
  • spec/ - Test files for Discussions.

Key Functionality:

  • Creating and Managing Discussions: Users can create new discussions on specific issues, merge requests, or other objects. They can also reply to existing discussions and mark them as resolved.
  • Notifications and Mentions: Users receive notifications about new discussions and mentions.
  • Search and Filtering: Discussions can be easily searched and filtered based on various criteria (e.g., author, status).
  • Integration with other GitLab Features: Discussions are seamlessly integrated with GitLab’s issue tracker, merge requests, and other features.

Example Code Snippets:

1. Creating a new discussion:

# app/controllers/discussions_controller.rb
          def create
            @discussion = Discussion.new(discussion_params)
            @discussion.author = current_user
          
            if @discussion.save
              # ...
            else
              # ...
            end
          end

2. Rendering a discussion list:

<!-- app/assets/javascripts/discussions/components/DiscussionList.vue -->
          <template>
            <ul>
              <li v-for="discussion in discussions" :key="discussion.id">
                <a :href="discussion.path">{{ discussion.title }}</a>
              </li>
            </ul>
          </template>

3. Testing discussion creation:

# spec/models/discussion_spec.rb
          describe Discussion do
            it 'is valid with valid attributes' do
              discussion = build(:discussion)
              expect(discussion).to be_valid
            end
          end

Note: This is a simplified overview. The actual codebase is much more complex and includes features for different object types, permissions, and more.

For further information on the codebase, please refer to the GitLab Discussions repository on GitLab: https://gitlab.com/gitlab-org/gitlab-discussions/