Prasanth Chaduvula
I'm a React, Javascript & Rails full-stack Software Engineer. I have been working remotely for the past two years in a remote village. Before joining as a Software Engineer I founded kwiq - a hyperlocal delivery startup to deliver things in remote villages.
Rails uses self-join for UPDATE with outer joins on PostgreSQL and SQLite
Rails no more generates the subqueries as it uses self-join for `UPDATE` with outer joins on PostgreSQL and SQLite.Rails 8 adds built in authentication generator
Rails 8's built-in authentication generator offers a lightweight, secure, and customizable alternative to Devise or Auth0, providing full control over sessions and tokens.Rails stops generating bundler binstub(bin/bundle)
In new Rails applications, the bin/bundle is no longer included by default, as managing the correct Bundler version is now handled directly by RubyGems.Rails 8 Removes Channels From Default App Structure.
With Rails 8, channels folder dropped from default app/ structure as Hotwire is default in Rails.Rails Introduces ActiveModel::Attributes::Normalization
Normalization allows us to define custom normalization rules for attributes in our model. This feature is particularly helpful for ensuring that specific attributes are consistently formatted or transformed before they are saved to the database.Deep Dive Into Rails ActionController Strong Parameters
Explore Rails Strong Parameters, their role in preventing mass assignment vulnerabilities, and how they enhance security and maintainability.Rails 8 Adds A New Script Folder By Default And Scripts Generator.
The new script folder to hold one-off or general purpose scripts, such as data migration scripts, cleanup scripts and a scripts generator.Rails 8 Now Uses ISO 8601 Style Time For TimeWithZone#inspect.
Rails 8 ensures TimeWithZone#inspect aligns with Ruby standards, ensuring time formatting consistency across the board by supporting ISO 8601 Style.What Is New In Ruby 3.4
Ruby 3.4 boasts performance boosts, with advancements in the Garbage Collection, YJIT, default parser (Prism), frozen_string_literal, block parameters, and multiple bug fixes.Rails 8 Adds if_not_exists Option On The add_enum_value.
Rails 8 introduces if_not_exists option on add_enum_value, we can now safely add a new enum value, preventing errors if the value already exists.Filter and Require Params in Rails 8 with Parameters#expect
Learn how Rails 8's Parameters#expect enhances parameter handling to safely filter and require params, improving security and reducing application errors.Rails 8 Allows drop_table To Accept An Array Of Table Names.
Rails 8 allows dropping multiple tables in one call with drop_table by accepting an array of table names in a single migration.Rails 8 Adds Ability To Use Multiple Rate Limits Per Controller.
Rails 8 introduces the ability to define multiple rate limits within a controller, offering better flexibility for traffic management.Rails 7.2 Added Support For Explain Method To ActiveRecord::Relation.
With Rails 7.2, the object returned by explain now responds to pluck, first, last, average, count, maximum, minimum, and sum methods.Rails 7.1 Introduces By Argument For increment_counter And decrement_counter Methods.
With Rails 7.1, we can specify the amount to increment or decrement the value by simply passing the desired number as the `by` argument to increment_counter and decrement_counter.Rails 7.1 Adds Rails.application.deprecators Method
Rails.application.deprecators returns a collection of managed deprecators within our application, and allows us to add and retrieve individual deprecators with ease.Rails 7.2 Prevents Job Scheduling Within Transactions.
In Rails 7.2, ActiveJob delays job enqueuing until the transaction is committed and drops the job if the transaction is rolled back.Rails 7.1 Allows Validators To Accept Lambdas Without Record Argument
With Rails 7.1, we can use lambdas without record argument with ActiveModel validators.Rails 7.1 Adds --parent Option To The Controller Generator.
With Rails 7.1, the controller generator now accepts the --parent option. This allows us to generate a controller that inherits from the specified parent class.Rails 7.1 Added Support For Array#intersect? To ActiveRecord::Relation.
Rails 7.1 added Array#intersect? method which returns true if two ActiveRecord relation objects have at least one element in common, otherwise returns false.Rails 7.1 Raises Error When Generating Model Attributes With Reserved Names.
Rails 7.1 raises error when we generate model with reserved attribute names.Understanding `inverse_of` In Rails Associations.
Explore the inverse_of option in Rails associations, highlighting its benefits in performance, data consistency, and optimizing bi-directional relationships.Rails 7.1 Adds --unused Option To Detect Dormant Routes.
With Rails 7.1, identify and manage unused routes declared in the application by using bin/rails routes --unused option.Rails 7.1 Adds exclude? And extract_value methods To ActionController::Parameters
Rails 7.1 adds exclude?, returning true if a key is missing from parameters. And extract_value, which splits a parameter value by delimiter into an array.Rails 7.1 Supports Descending Order For in_batches Without Block
With Rails 7.1, in_batches method without a block works fine for both `ASC/DESC` order values.Rails 7.1 Adds after_discard Method To ActiveJob For Discarded Jobs.
Rails 7.1 introduces the after_discard method, allowing us to run a callback when a job is about to be discarded.Rails 7.1 Allows Subscribing To ActiveRecord Transaction Events For Instrumentation.
With Rails 7.1, we can subscribe to ActiveRecord transaction events for instrumentation with the help of transaction.active_record.Rails 7.1 Adds Adapter Option To Disallow Foreign Keys.
With Rails 7.1, we can disable foreign key constraints for the entire application by adding foreign_keys false option to database.ymlRails 7.1 Raises Error On Assignment To Readonly Attributes.
Rails 7.1 now raises an ActiveRecord::ReadonlyAttributeError on assignment to readonly attributes.Rails 7.1 Supports Multiple Preview Paths For Mailers.
Rails 7.1 adds support for multiple mailer preview paths, enhancing flexibility and organization by allowing previews across various directories.Rails 7.1 Adds Support For Logging Background Job Enqueue Callers.
Rails 7.1 ActiveJob logs background job enqueue callers with backtraces, showing the file and line number where jobs are triggered.Rails Adds The Ability To Ignore Counter Cache Columns While They Are Backfilling
With Rails 7.2, we can now ignore counter cache columns during backfilling, allowing faster execution by reducing N+1 queries from counter cache column updates.Rails 7.1 Adds Support For Composite Key Multi-Column Ordering In ActiveRecord::Batches
With Rails 7.1, `ActiveRecord::Batches` now supports multi-column ordering for models with composite primary keys, enabling separate ascending or descending order for each key.Rails 7.1 Adds *_deliver Callbacks To ActionMailer
With Rails 7.1, we can hook into the lifecycle of email delivery with the help of ActionMailer before_deliver, around_deliver and after_deliver callbacks.Rails Warns On Tests Without Assertions.
With Rails 7.2, `ActiveSupport::TestCase` now warns when tests do not run any assertions.Rails 7.2 Adds Support For Devcontainer.
In Rails 7.2, use `--devcontainer` flag with `rails new` to add a devcontainer to new apps and run `bin/rails devcontainer` for existing apps.Functional Programming In React
Learn about functional programming and how React implements it using immutable data, pure functions, and composition, along with the benefits of functional programming.CSS units rem, em, px, vh, vw, percentage
Learn differtent types of css units and their usage based on usecases.Understanding Controlled And Uncontrolled Components In React
Learn about controlled and uncontrolled components, the differences between them and and which one to use.Rails Adds SKIP_TEST_DATABASE_TRUNCATE Flag To Speed Up Multi Process Test Runs
Speed up multi-process test runs on large DBs with ENV["SKIP_TEST_DATABASE_TRUNCATE"] flag by skipping the table truncations and running test within default transaction.Puma-dev And Using It With Rails Applications.
Explore what Puma-dev is, why it is beneficial, how to install and use it, and how to configure it within bin/setup.Rails Add ActiveRecord.after_all_transactions_commit Callback
ActiveRecord.after_all_transactions_commit ensures specified actions execute only after all database transactions commit, ensuring reliable post-transaction operations.Rails Adds ActiveRecord::Base.with_connection To Optimize Database Operations.
Efficiently manages database connections by promptly returning them to the pool after use, enabling immediate reuse rather than holding onto connections until the end of the request cycle.Ruby 3.4 Throws SyntaxError As Keyword Arguments Are No Longer Allowed In Index.
Passing keyword arguments in index to an array set methods throws SyntaxError.ActiveRecord::Relation#order Adds Support For Hash Values In Rails 7.2.
With Rails 7.2, ActiveRecord::Relation#order supports hash values where keys are table name, value is a hash of key (column name) and value (order direction).PostgreSQL Adapter Now Decodes Columns Of Type Date To Date Instead Of String In Rails 7.2.
Rails 7.2 added a Date decoder to the postgres adapter to type cast dates at the connection level to type cast columns of type date to Ruby Date instead of String.Ruby 3.4 Throws SyntaxError While Passing Block As Argument In Index.
Passing a block as an argument in index to an array throws SyntaxError in Ruby 3.4 as it is no longer allowed.Strict Loading Using :n_plus_one_only Mode Does Not Eagerly Load Child Associations In Rails 7.2.
In Rails 7.2, with strict loading in :n_plus_one_only mode, associations are eagerly loaded and child associations are lazy loaded.Ruby 3.4, Range#size Now Raises TypeError If The Range Is Not Iterable
Range#size raises TypeError if the begin value of Range is a Float or Rational or Beginless.Ruby 3.4, No More TypeError With **nil As It Is Treated As An Empty Hash.
When double splat ** operator used with nil, it is treated similarly to **{}, which passes no keywords and does not call any conversion methods.Enhancing Data Integrity With validate_foreign_key In Rails
validate_foreign_key validates foreign key constraint and is designed to reduce the impact of adding foreign keys on high-traffic tables in PostgreSQL.Rails Adds GitHub CI Workflow By Default To New Applications
All new applications using Rails 7.2 will have GitHub CI workflow by default.Rails 7.1 Allows ActiveRecord::Relation#explain To Accept Options
Adding analyze and verbose as ActiveRecord::Relation#explain options give us deeper insight into query performance.Rails 7.1 Introduces ActiveRecord regroup Method
With regroup and regroup! methods we can override the group_valuesRails 7.1 allows resetting singular associations
Query database again to retrieve the associated record by resetting the cache on singular associations.Rails 7.1 Introduces Option To Disable All Methods That ActiveRecord.enum Generates
Disable auto generated methods of ActiveRecord.enum with instance_methods by passing false to it.Rails 7.1 Adds path_params Option For url_for Helper Method
path_params allows specified params to be used exclusively for named segments under scoped routing without unnecessarily appending parameters to every URL.Ruby 3.3 Implements Range#reverse_each Method For Very Large or Beginless Ranges And Error Handling For Endless Ranges
Range#reverse_each can now process beginless ranges with an Integer endpoint and raises TypeError for endless ranges.Automate Fly Postgres Database Backup & Store To S3 bucket With GitHub Actions
Discover how GitHub Actions empowers automation to effortlessly backup Fly.io hosted postgres databases, saving backups to a designated S3 bucket.Rails 7.1 Allows ActiveRecord reselect Query Method To Accept Hash
Use of hash syntax for specifying columns and aliases with the ActiveRecord::QueryMethods#reselect method makes it easier for querying.Ruby 3.3 Introduces Range#overlap? method
Compare two ranges and see if they overlap each other. overlap? returns true if two ranges overlap each other, otherwise false.Rails 7.1 Introduces Default Dockerfiles
Dockerfiles facilitate the deployment of Rails applications in production environments using Docker.Rails 7.1 Adds ActiveJob#perform_all_later To Enqueue Multiple Jobs At Once
perform_all_later allows us to enqueue multiple jobs that belong to different classes simultaneously within ActiveJob.Rails 7.1 Expands ActiveRecord API with Async Query Support
With the Active Record API for general async queries we can efficiently query not so fast queries asynchronously to improve the performance.Rails 7.1 Introduces ActiveRecord::Base::generates_token_for
Generate tokens for specific purposes and verify their authenticity.Rails 7.1 Introduces ActiveRecord::Base::Normalization
Normalization allows us to define custom normalization rules for attributes in our model. This feature is particularly helpful for ensuring that specific attributes are consistently formatted or transformed before they are saved to the database.Rails 7.1 Introduces Autoload Lib and Ignore Sub-Directories with config.autoload_lib(ignore:) Method
Autoloading lib directory isn't always straightforward. In this blog post, we'll delve into the autoloading of the lib directory using config.autoload_lib(ignore:).Set And Restore Public Attributes Around a Block Using Object#with
We can use Object#with method as shorthand for the common begin/ensure pattern to save the value of an attribute, setting a new value, and then restoring the previous value.React state management - useReducer vs Redux
This blog explores useReducer vs Redux, delving into their definitions, use cases, code samples and when to choose each for efficient state management.Open Ranges Are Now Supported By The Object#in? Method In Rails
We can use Object#in? method to check open date ranges i.e. beginless and endless ranges.Reduce load times of Rails applications using CloudFront CDN
Delivering static assets and JavaScript files with CDN can significantly improve the performance of our Rails application, resulting in faster load times and a better user experience.When to extract code to React custom hooks?
React custom hooks help us to build reusable logic, and make the code more readable. In this blog, we will talk about when and when not to use react custom hooks.Rails adds the ability to ignore tables in SQL schema dumps via regular expressions
Ignore tables by configuring regular expressions on ActiveRecord::SchemaDumper.Rails now supports routes prefixed with word cable
Rails improved its support for routes which helps us to navigate to routes prefixed with word cable which were throwing 404 errors before.