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Diffstat (limited to 'guides/source/debugging_rails_applications.md')
| -rw-r--r-- | guides/source/debugging_rails_applications.md | 56 |
1 files changed, 54 insertions, 2 deletions
diff --git a/guides/source/debugging_rails_applications.md b/guides/source/debugging_rails_applications.md index a788dd48ad..6113a61f4c 100644 --- a/guides/source/debugging_rails_applications.md +++ b/guides/source/debugging_rails_applications.md @@ -242,6 +242,58 @@ The contents of the block, and therefore the string interpolation, is only evaluated if debug is enabled. This performance savings is only really noticeable with large amounts of logging, but it's a good practice to employ. + +Debugging with the `web-console` gem +------------------------------------- + +The web console allows you to create an interactive ruby session in your browser. An interactive +console is launched automatically in case on an error but can also be launched for debugging purposes +by invoking `console` in a view or controller. + +For example in a view: + +```ruby +# new.html.erb +<%= console %> +``` + +Or in a controller: + +```ruby +# posts_controller.rb +class PostsController < ApplicationController + def new + console + @post = Post.new + end +end +``` +###config.web_console.whitelisted_ips + +By default the web console can only be accessed from localhost. `config.web_console.whitelisted_ips` +lets you control which IPs have access to the console. + +For example, to allow access from both localhost and 192.168.0.100: + +```ruby +# config/application.rb +class Application < Rails::Application + config.web_console.whitelisted_ips = %w( 127.0.0.1 192.168.0.100 ) +end +``` + +To allow access from an entire network: + +```ruby +# config/application.rb +class Application < Rails::Application + config.web_console.whitelisted_ips = %w( 127.0.0.1 192.168.0.0/16 ) +end +``` + +Web console is a powerful tool so be careful who you open access to. + + Debugging with the `byebug` gem --------------------------------- @@ -544,7 +596,7 @@ This way an irb session will be started within the context you invoked it. But be warned: this is an experimental feature. The `var` method is the most convenient way to show variables and their values. -Let's let `byebug` to help us with it. +Let's let `byebug` help us with it. ``` (byebug) help var @@ -832,7 +884,7 @@ application. Here is a list of useful plugins for debugging: * [Footnotes](https://github.com/josevalim/rails-footnotes) Every Rails page has footnotes that give request information and link back to your source via TextMate. -* [Query Trace](https://github.com/ntalbott/query_trace/tree/master) Adds query +* [Query Trace](https://github.com/ruckus/active-record-query-trace/tree/master) Adds query origin tracing to your logs. * [Query Reviewer](https://github.com/nesquena/query_reviewer) This rails plugin not only runs "EXPLAIN" before each of your select queries in development, but |