Redmine Project Tree (Standalone Plugin for Redmine 6)

A modern, standalone version of the original Redmine Project Tree plugin - rebuilt for Redmine 6.0 and designed specifically for environments with large, deeply nested project structures.

🌳 Core Idea

Redmine installations with hundreds or even thousands of projects quickly become hard to navigate - especially when these projects are deeply nested. This plugin solves that problem by providing:

• An interactive, lazily loaded project tree → Only the parts of the tree you expand are loaded
• Smooth navigation even with very large hierarchies → No performance issues when expanding deep structures
• A clear, hierarchical overview at a glance → Much more usable than Redmine's built-in parent/child lists

✨ Features

• Adds a dedicated top-level navigation item ("Project Tree") → leaves Redmine's standard project overview intact
• Lazy loading of subtrees for fast performance
• Clean, interactive visualization of project relations
• Updated to work reliably with Redmine 6.0 / Rails 7
• English and German localization

🧩 Background

This plugin is based on:

UweHeber/redmine-project-tree-plugin Originally developed for Redmine 3.x

This fork:

• modernizes the codebase
• makes the plugin standalone
• restores compatibility with Redmine 6
• improves performance for very large project hierarchies

🚀 Installation

1. Clone into your Redmine plugins/ directory:

cd redmine/plugins
git clone https://github.com/MatthiasPetermann/redmine-project-tree-plugin.git project_tree

2. Restart Redmine:

touch ../tmp/restart.txt

3. A new tab "Project Tree" top menu item will appear.

🖥 Usage

Navigate to:

Project Tree

Each level expands on demand, allowing fast browsing of large hierarchies without rendering the entire tree at once.

🌍 Localization

• English (en.yml)
• German (de.yml)

🛠 Development

Setup helper script:

scripts/setup-dev-environment.sh

Detailed notes in DEVELOPMENT.md.

📜 License

See the included LICENSE file.