After adding a new gem to your Gemfile, you run bundle install but the gem is not available in your project. What is the likely mistake?

medium📝 Debug Q7 of 15

Ruby - Gems and Bundler

After adding a new gem to your Gemfile, you run bundle install but the gem is not available in your project. What is the likely mistake?

ANot running <code>bundle install</code> after editing Gemfile

BRunning <code>bundle install</code> without saving Gemfile changes

CRunning <code>bundle update</code> instead of <code>bundle install</code>

DNot requiring the gem in your Ruby code

Step-by-Step Solution

Solution:

Step 1: Check if Gemfile changes were saved before running bundle install
If Gemfile was not saved, bundle install uses old file without new gem.
Step 2: Understand that bundle install reads current Gemfile
Unsaved changes mean new gem is not recognized or installed.
Final Answer:
Running bundle install without saving Gemfile changes -> Option B
Quick Check:
Save Gemfile before bundle install to add gems [OK]

Quick Trick: Always save Gemfile before running bundle install [OK]

Common Mistakes:

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