Previous Next Questions Plugin for Question2Answer

Adds previous/next question navigation on question pages with per-user placement control, category-based navigation, and integration with the Lists plugin.

Features

• Global navigation — Navigate to the previous/next question by post ID order
• Category navigation — Navigate within the same category (optional)
• List navigation — Navigate within user-created lists from the Lists plugin (optional, per-user)
• Flexible placement — Admin sets the default; each user can override via a dropdown:
  • Widget area (managed via Admin > Layout)
  • After question content
  • After first answer
• Question title preview — Buttons show the first 20 characters of the destination question title
• Keyboard navigation — Optional left/right arrow key shortcuts
• Responsive — Adapts to mobile screens

Requirements

• Question2Answer 1.6+
• Lists plugin (only required if list navigation is enabled)

Installation

1. Copy the prev folder into your qa-plugin directory
2. Go to Admin > Plugins and verify the plugin is listed
3. Go to Admin > Previous Next Questions Settings to configure
4. If using "Widget" placement, also add the widget via Admin > Layout

Configuration (Admin Panel)

Option	Description	Default
Default placement	Where the nav appears (users can override per-browser)	Widget
Show question title	Display truncated title in nav buttons	On
Keyboard navigation	Enable ← → arrow key shortcuts	Off
Enable for categories	Show category-scoped prev/next	On
Enable list navigation	Show prev/next within user lists (requires Lists plugin)	Off
Label options	Customize text for all prev/next buttons	Configurable

Per-User Placement

Each user can choose where the navigation appears using the "Show nav" dropdown rendered below the navigation buttons. The preference is stored in a browser cookie and does not require login. The admin setting serves as the default for new visitors.

File Structure

prev/
├── metadata.json              # Plugin metadata and version
├── qa-plugin.php              # Plugin registration
├── qa-prev-next-admin.php     # Admin settings page
├── qa-prev-next-functions.php # Shared rendering and query functions
├── qa-prev-next-layer.php     # Theme layer (CSS/JS injection, placement hooks)
├── qa-prev-next-widget.php    # Widget module (for widget placement mode)
├── styles.css                 # All styling
└── README.md

License

GPLv2

Author

Arjun Suresh