This is a Ruby on Rails web application designed for managing personal collections such as books, post-stamps, coins, etc. The application provides features for authenticated users to create, view, and manage their collections and items. Non-authenticated users have read-only access, allowing them to search and view collections and items.

• Users can register and authenticate via site forms.
• Non-authenticated users have read-only access.
• Authenticated users can access all features except admin functionalities.
• Admin users can manage users (view, block, unblock, delete), including granting or revoking admin access.

• Users can create, edit, and delete collections.
• Each collection contains name, description, topic/category, optional image, and customizable fields for items.
• Users can add, edit, and delete items within their collections.
• Items have fixed fields (id, name, tags) and customizable fields selected by the user.

• The application supports full-text search across items.
• Search results display links to items containing the searched text.

• Users can leave comments on items.
• Comments are linear and displayed chronologically.
• Users can like and dislike items.

• Displays the list of latest items, top 5 largest collections, and a tag cloud.
• Clicking on a tag in the tag cloud displays the list of items associated with that tag.

• Users can select their preferred language (English and one other) and theme (light or dark).
• User preferences are saved for future visits.

The database schema includes the following tables:

1. users: Stores user information including email, password, username, role, preferences, and blocked status.
2. collections: Stores information about collections including name, description, topic/category, image URL, and user ID.
3. items: Stores information about items including name, tags, additional customizable fields, and collection ID.
4. comments: Stores comments made by users on items, along with item and user IDs.
5. likes: Stores likes made by users on items, along with item and user IDs.
6. dislikes: Stores dislikes made by users on items, along with item and user IDs.

• Ruby on Rails framework
• Database management system (e.g., PostgreSQL, MySQL)
• Devise for authentication
• Bootstrap or similar CSS framework for styling
• Elasticsearch or native database features for full-text search
• Internationalization (I18n) for supporting multiple languages
• GitHub for version control

• Authentication via social networks
• Custom fields with predefined options
• Export collections to CSV file