Rails log file viewer

For the complete list of supported Ruby and Rails versions, see the Testing file. This will automatically replace the standard Rails logger with Semantic Logger which will write all log data to the configured Rails log file. Remove all of the following gems since they conflict or duplicate what Rails Semantic Logger already achieves. The log level is usually set with the config setting config. Warning: Either set this to nil to disable it completely or to a high log level :fatal or :error in your production environment otherwise you risk encountering a memory leak due to the very high number of objects allocated when Ruby backtraces are created.

This is best used in development for debugging purposes. Named tags can be added to every log message on a per web request basis, by overriding the Rails built-in config. For example, add the following to application. Beginning in SQL Server By using Registered Servers, you can view the log files when the instances are either online or offline.

For more information about online access, see the procedure "To view online log files from Registered Servers" later in this topic. You can open Log File Viewer in several ways, depending on the information that you want to view. It is a good open source log viewer software in which you can view log records and quickly find desired log records and patterns.

LogViewer is the next free open source log viewer software for Windows. It is also a lightweight and portable log viewer software that you can directly use from a portable storage device as it does not need installation to work. On its multi-tab interface , you can open and view multiple logs files at a time. To find and locate a specific log record, it provides multiple search features.

It is a simple and straightforward log viewer software in which you can easily view and search log records. Tailviewer is a free open source log viewer software for Windows. It is another active log viewer software in which you can view active logs which are constantly updated by their applications.

Plus, other essential logs viewing features are also present in it. Apart from the main viewing features, it also provides a cleanly designed interface that offers a decent log data viewing environment.

In this software, you can load and view multiple log file sources. The good thing about this software is its Threads functionality that divides a log file in multiple threads containing a similar set of records.

Overall, it is another easy to use log viewer in which you can view and analyze large log files. It is another decent open source log viewer software in which you can easily view and search large log records.

LogExpert is yet another free open source log viewer software for Windows. For example, if you are not seeing the appropriate page for a request then you may see the following error:. The router maps URLs and HTTP requests through the appropriate controller so the application can respond by serving the right web page.

Even in their default format, Rails logs provide information that can be very helpful in troubleshooting common application errors. To collect a greater amount of detail, you can add custom logging for Rails. To further enhance the logs your application generates, you can create customized logs with the ActiveSupport::Logger class.

This class is built-in for Rails 5. If you want to log specific attributes about an article when it is selected in the application, you can extend the method to include a custom logging statement:.

The Ruby inspect method prints out all attributes associated with the selected event, including timestamps, ids, and form field values. Now, whenever an article is selected, your application will generate a log similar to this at the debug level:.

As with your Rails environments, you can set any log level to your custom logs. The logger. Both logger.

Rails enables you to create any type of log for your application out-of-the-box and set appropriate log levels. In small applications, Rails manages logs well, so you can easily debug issues without the need for third-party libraries. As your application grows, however, you will need to consider how to better manage the volume of logs it generates. Production applications can generate logs for multiple processes at the same time, mixing the data together and making it harder to piece together information from your logs.

You can manage this complexity by using libraries that transform your Rails logs into a format that is easier to parse and read.

Lograge, for example, is a library that easily cleans up Rails logs and converts them into several possible formats, including JSON. To get started with Lograge, add gem 'lograge' and gem 'lograge-sql' to your Gemfile and install them with:. The lograge-sql gem is an extension of Lograge that adds all database queries generated at the debug log level to your newly formatted JSON logs.

You can easily enable and configure third-party libraries with initializer files, and Rails will include them automatically while serving the application.