RailsPanel
Chrome extension for Rails development that displays request information directly in browser developer tools.
What is RailsPanel?
RailsPanel is a Chrome extension for Ruby on Rails development that displays detailed request information directly in the browser's Developer Tools panel. It eliminates the need to tail development.log files by providing insights into database query times, rendering performance, parameters, and rendered views for each request. The extension works alongside the meta_request gem to capture and present Rails application data in a structured format.
Ruby on Rails developers working on web applications who need efficient debugging and performance monitoring tools during development. It's particularly useful for developers who frequently analyze request/response cycles and want to reduce context switching between terminal and browser.
Developers choose RailsPanel because it integrates Rails debugging directly into their existing workflow within Chrome Developer Tools, providing immediate access to request data without terminal commands. Its visual presentation of timing metrics and request details makes performance analysis more intuitive compared to parsing log files.
Overview
Chrome extension for Rails development
Use Cases
Best For
- Debugging Rails application request/response cycles during development
- Analyzing database query performance and N+1 query issues
- Monitoring view rendering times and identifying slow partials
- Inspecting request parameters without console logging
- Understanding Rails application behavior without tailing development.log
- Performance optimization of Rails controllers and views
Not Ideal For
- Production or staging environments where installing development-only gems like meta_request is unsafe
- Development teams using browsers other than Chrome, such as Firefox or Safari
- Projects built with non-Rails Ruby frameworks like Sinatra or Hanami
- Developers who prefer terminal-based debugging tools and have no need for browser integration
Pros & Cons
Pros
Integrates directly into Chrome Developer Tools, eliminating the need to tail development.log files and reducing context switching, as emphasized in the README's philosophy.
Provides comprehensive timing metrics for database queries, rendering, and total requests, helping identify bottlenecks without parsing log files.
Setup requires only adding the meta_request gem to the Gemfile and installing the Chrome extension, which auto-updates from the Chrome Store for maintenance-free use.
Shows complete parameter lists and all rendered views and partials per request, offering clear visibility into application behavior.
Cons
Only available as a Chrome extension, excluding developers on Firefox, Safari, or other browsers, which limits team flexibility.
Requires the meta_request gem and is compatible only with Rails applications, making it useless for other Ruby frameworks or production use.
Lacks advanced debugging features like data export, historical tracking, or integration with external monitoring tools, focusing solely on request-level insights.
Frequently Asked Questions
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