Coding⏱️ 2 min read📅 2026-05-31

How to Fix: Get current stack trace in Ruby without raising an exception

Get current stack trace in Ruby without raising an exception

Quick Answer: Use the backtrace module to get the current stack trace and log it manually, e.g. `require 'backtrace'; puts $@;`

In Rails, you can use the `backtrace` method provided by the `BacktraceError` class to get the current stack trace without raising an exception. To do this, you need to create a custom error handler that catches any exceptions and returns the backtrace instead of displaying the original error message.

💡 Implementing Custom Error Handling

  • Open your `config/environments/production.rb` file and add the following code:

Custom Error Handler Code

  1. 1. Create a new file in `lib/` directory, e.g., `backtrace_helper.rb`:
ruby

Backtrace Helper Code (continued)

  1. 2. Add the following code to `backtrace_helper.rb`:
ruby

Backtrace Helper Code (continued)

  1. 3. In your `missing_template.erb` file, include the following code to call the custom error handler:
erb

Wrapping Up

By implementing this custom error handler, you can get the current stack trace in Ruby without raising an exception.

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