When it comes to extracting data from your database for export or analysis, Ruby on Rails’ ActiveRecord library offers the powerful pluck method to streamline the process.
It’s common when adding images to an email to use the image_tag function like this:
Are you building a Rails application and need to allow users to select days of the week in a form? Rails 7 offers an elegant solution for that with the weekday_options_for_select method. In this article, we’ll explore how to use this method, along with detailing its options and providing practical examples to get you started.
The only_numeric validation, introduced in Rails 7, empowers developers to enforce stricter constraints on model attributes. This ensures that only numeric values are accepted, improving data integrity in various scenarios. Imagine collecting phone numbers or product quantities – only_numeric guarantees user input adheres to the expected format.
Timestamps are a crucial part of any data model, helping track when records were created or modified. ActiveRecord provides convenient methods to manage timestamps: touch and touch_all.
In Rails, the link_to helper is used to generate HTML links. But what if you want a link to only appear if the current page isn’t the one it points to? That’s where link_to_unless_current comes in.
Delegating methods in Ruby on Rails can greatly streamline your code, especially when dealing with associations between objects. One particularly handy method for achieving this is delegate_missing_to. Let’s delve into how it works and explore some examples.
In Ruby on Rails, there are a number of time helpers that can be used to format and manipulate dates and times. We selected a few ones you might not know that can be used to make your code more readable and to provide a better user experience.
Generating URLs within Rails applications can involve specifying parameters for various routes. Prior to Rails 7.1, dealing with scoped routes presented a minor challenge.
ActiveSupport::StringInquirer is a class provided by Rails’ ActiveSupport module that can streamline your code and make it more readable. Let’s dive into what ActiveSupport::StringInquirer is and how it can improve your Ruby on Rails development experience.
In Ruby on Rails, concerns are modules that encapsulate common behaviors that can be shared among different model classes, controllers, or other components of the application. Concerns are used to avoid code repetition and maintain code modularity and organization.
Managing arrays is a common and essential task and when it comes to filtering elements based on specific criteria, a variety of methods are at our disposal. In this post, we’ll highlight some well-known methods along with others that might be less familiar in the Ruby world.
Rails 7.1 introduces a significant enhancement to enum handling through the introduction of the :validate option.
Building performant web applications is crucial so while Rails provides a robust framework, optimizing every piece of code is essential for a smooth user experience. This is where memoization comes in, a powerful technique to enhance your Rails app’s speed and efficiency. In scenarios with frequent database queries, it’s a straightforward yet impactful technique for boosting overall performance.
In Ruby on Rails, there are two main methods for truncating strings provided by Active Support: truncate_words and truncate. Both methods take a string as their argument, but they have different behaviors.
Improve your Rails code readability with these three useful features.
Improve your Rails app’s performance, flexibility, and data integrity with these three useful features.
The :status option provides flexibility in customizing the HTTP status code for a Rails response. By default, Rails generates a response with the appropriate HTTP status code, typically 200 OK for successful requests. However, the :status option allows developers to explicitly set the status code, enabling more granular control over response behavior. This option proves particularly useful when the default status code is not suitable for the response, such as returning a 404 Not Found status code for missing resources.
In Ruby on Rails, there are two main methods for retrieving all records from a model: all and find_each. Both methods return an ActiveRecord::Relation, but they have different performance characteristics.
A curious topic repeated across internet forums and social media is the uncanny parallel between programming and the occult.
Subject allows you to define a common object to be tested in multiple examples in a single test case. It is typically used to represent an instance of the class that you are testing.
Rails 7.1 introduces a new method, generates_token_for, which allows you to generate tokens for specific purposes. These tokens can expire and can also embed record data. When using a token to fetch a record, the data from the token and the current data from the record will be compared. If the two do not match, the token will be treated as invalid.
Ruby has two methods for checking the sign of a number: positive? and negative?. These methods were introduced in Ruby 2.3, and they provide a more concise and readable way to check the sign of a number than using comparison operators.
In Rails 7.1, a new method has been added to the Active Record called normalizes. This method allows developers to normalize values before they are persisted in the database.