Question2Answer Book

Description

This is a plugin for Question2Answer that creates an html e-book of the sites top questions and answers, and provides a built-in Book Viewer for browsing them interactively.

Features

Book Generation

• fully customizable HTML template via admin/plugins
• options for sorting, inclusion exclusion filters, include/exclude answers
• option for static or on-the-fly creation (static requires PHP to write to file)
• option to create PDF file - requires wkhtmltopdf (see below)
• optional widget for displaying download links in sidebar

Book Viewer

• Collapsible TOC sidebar — Categories, topics, and questions in a tree structure
• Lazy AJAX loading — Only the selected section's HTML is fetched; the full file is never sent to the browser
• Client-side caching — Loaded sections are cached so repeat clicks are instant
• Prev/Next topic navigation — Navigate between topics with buttons
• Tag filter — Filter questions by tag (e.g., gatecse-2009); supports multiple tags with AND logic
• Save point — Pin any question with 📌 to save your position (per-book, stored in localStorage)
• MathJax rendering — LaTeX math is rendered after each section loads
• Code prettify — Syntax highlighting via Google Code Prettify
• Click-to-reveal answer keys — Answer badge that reveals on click
• Search/filter — Filter sections by name from the toolbar
• Expand/Collapse All — Toolbar buttons to open or close the entire tree
• Sidebar toggle — Hamburger button to show/hide the sidebar
• Fullscreen mode — Browser fullscreen with sidebar still accessible
• Dark mode — Full dark mode support
• Responsive — Sidebar stacks above content on mobile
• Multi-book support — Drop multiple HTML files in html/; a dropdown lets users switch
• Auto-caching — TOC structure is cached as .toc.json and auto-regenerated when the HTML changes

Lists Integration

• Bookmark / Lists — Each question title shows a ☆ button to add/remove the question from user-defined lists
• Cross-site support — Works across Q2A network sites; the question's origin site is auto-detected from its URL
• Requires the Lists plugin (qa-lists) to be installed; the feature is auto-detected and hidden if unavailable

Notes Integration

• Self notes — Each question title shows a ✎ button to add, edit, or delete a personal note
• Cross-site support — Notes are stored per-user per-question, resolved to the correct network site's DB table
• Requires the Notes plugin (qa-plugin/note) to be installed; auto-detected

Question Status Tracking

• Per-question status — Mark each question as ✔ Completed, ⏭ Skipped, or ✘ Wrong via a status button on the title
• Visual indicators — Questions get a colored left border (green/yellow/red) matching their status
• Filter bar — A filter toolbar below the main toolbar lets you toggle visibility by status (All, Unmarked, Done, Skipped, Wrong)
• Multi-select filters — Click multiple filter buttons to show e.g. Skipped + Wrong together
• Live counts — Each filter button shows a count that updates in real time as you mark questions
• Cross-site support — Statuses are stored with the network site prefix, so they work correctly for cross-site questions
• Stored in the ^book_question_status table, created automatically on first use

Installation

1. Install Question2Answer
2. Get the source code for this plugin from github, either using git, or downloading directly:
   • To download using git, install git and then type git clone git://github.com/gateoverflow/q2a-book.git book at the command prompt (on Linux, Windows is a bit different)
   • To download directly, go to the project page and click Download
3. Navigate to your site, go to Admin -> Plugins on your q2a install, go to the "Book" panel, select options, click "Create".
4. Place your generated book HTML files in qa-plugin/q2a-book/html/
5. Access the Book Viewer at /book/

File Structure

q2a-book/
├── qa-plugin.php              # Plugin registration (book generation + viewer)
├── metadata.json              # Plugin metadata
├── qa-book-admin.php          # Admin panel for book generation + DB table creation
├── qa-book-overrides.php      # Q2A overrides
├── qa-book-widget.php         # Sidebar widget
├── util-book.php              # Utilities
├── wkhtmltopdf.php            # PDF export
├── html/                      # Book HTML files (add your own here)
│   └── *.html
└── book-view/                 # Book Viewer module
    ├── qa-book-page.php       # Page module — renders the viewer UI and builds TOC
    ├── qa-book-ajax.php       # AJAX endpoint — section extraction, lists, notes, question status
    ├── css/
    │   └── book-viewer.css    # All styles including dark mode
    └── js/
        └── book-viewer.js     # Frontend: TOC tree, AJAX loading, search, lists, notes, status

Static Files

To output static files you need to find a location that is writeable by PHP. The default is to write to the plugin dir itself, which is probably not writeable. On Linux, something like this works:

touch book.html touch book.pdf chmod 777 book.html book.pdf

PDF File

To use the PDF export, you need to put the binary of wkhtmltopdf, available here:

http://code.google.com/p/wkhtmltopdf/downloads/list

in the same directory as these plugin files. It works for Linux 64-bit, no guarantees apart from that.

Disclaimer

This is beta code. It is probably okay for production environments, but may not work exactly as expected. Refunds will not be given. If it breaks, you get to keep both parts.

Release

All code herein is Copylefted.

About q2A

Question2Answer is a free and open source platform for Q&A sites. For more information, visit:

http://www.question2answer.org/