Martin Sojka

This snippet lets you generate secure, one-time-use tokens for password resets without Devise. It stores the token in the database, checks its validity, and clears it after use. The send_reset_link action sends the reset link, and the reset action ver

This snippet uses PostgreSQL’s JSONB column to store flexible metadata for orders, making it easy to store dynamic attributes without schema changes. The scopes allow efficient filtering using native SQL JSON functions. The update_metadata method enab

This snippet encourages larger cart values by dynamically showing how much more is needed for free shipping. The logic lives in free-shipping-bar.liquid, and it's rendered inside cart.liquid.

This setup separates the product badge logic into its own snippet product-badge.liquid, making it reusable across different sections like product listings and featured collections. The product-card.liquid section renders the badge alongside the produc

This snippet ensures every article gets a unique, readable slug based on its title, keeping it short and pronounceable. It grabs the first two words of the title and appends a 4-character random string to prevent duplicates. The before_validation call

This snippet stores user IPs efficiently using the PostgreSQL inet type, which optimizes space and lookup speed. The from_same_network scope allows querying users within the same /24 subnet, useful for analytics or security checks. The update_ip metho

This snippet automatically detects and stores a user's timezone by capturing it in JavaScript and saving it in a cookie. On every request, Rails reads this value and updates the user’s timezone in the database if needed. The local_time method then all

This snippet introduces a polymorphic emoji reaction system in Rails, allowing models like Post (or any other) to receive emoji reactions. The Reaction model supports different reactable types via polymorphic: true. A simple emoji regex ensures valid

This snippet defines a custom validator for hex color codes, ensuring that values follow the correct #RGB or #RRGGBB format. By using ActiveModel::EachValidator, the validation logic remains reusable across multiple models. This approach keeps models

The Trackable concern automatically assigns the created_by field when a record is created, using Current.user. This keeps model logic clean while ensuring proper tracking of record ownership. The Post model includes Trackable, to get this functionalit

This custom EmailDomainValidator ensures users can only register with emails from approved domains. It extracts the domain from the email and checks it against a predefined list. The User model applies this validation. A challenge is making the allowe

This snippet ensures usernames are consistently formatted by automatically trimming spaces and converting them to lowercase before saving. The before_save callback in the User model prevents duplicates caused by case differences. The UsersController h