Where is the Gemfile located?

Where is the Gemfile located?

The Gemfile is wherever you want it to be – usually in the main directory of your project and the name of the file is Gemfile . It’s convenient to have one because it allows you to use Bundler to manage which gems and which versions of each your project needs to run.

How do you update gems in Gemfile lock?

Update the gems specified (all gems, if none are specified), ignoring the previously installed gems specified in the Gemfile. lock . In general, you should use bundle install(1) to install the same exact gems and versions across machines. You would use bundle update to explicitly update the version of a gem.

Can I update Gemfile lock?

Just running bundle install will not update an existing Gemfile. lock. To do so, you need to run bundle update . All that said, there are no actual changes to the versions in your Gemfile.

How do I set gem version in Gemfile?

There are several ways to specify gem versions: Use a specific version: gem “name-of-gem”, “1.0” . You can find specific versions on Rubygems.org (provided that’s the source you”re using) by searching for your gem and looking at the “Versions” listed. Use a version operator: gem “name-of-gem”, “>1.0” .

How do I change my Gemfile version?

How to update the bundler version in a Gemfile. lock

1. Install the latest bundler version: Copy. gem install bundler Fetching bundler-2.1.2.gem Successfully installed bundler-2.1.2 1 gem installed.
2. Update the bundler version in you Gemfile.lock : Copy. bundle _2.1.2_ update –bundler.

Is Gemfile lock auto generated?

Important! Gemfile. lock is automatically generated when you run bundle install or bundle update . It should never be edited manually.

What’s Gemfile?

A Gemfile is a file we create which is used for describing gem dependencies for Ruby programs. A gem is a collection of Ruby code that we can extract into a “collection” which we can call later. It lets you specify which gems you want to use, and which versions of these gems to use.

Should I specify version in Gemfile?

In short, you should be generally safe using the pessimistic version constraint operator ( ~> ) as rubygems.org advises. Just be sure to re-run your tests after you do a bundle update to make sure nothing breaks. There’s a nice article by Yehuda Katz that has a little more info on Gemfile.

How do I update my Gemfile to a different version of rails?

Since you originally declared a dependency on rails 3.0.0.rc, if you want to update to rails 3.0.0, simply update your Gemfile to gem ‘rails’, ‘3.0.0’ and run: As described above, the bundle install command always does a conservative update, refusing to update gems (or their dependencies) that you have not explicitly changed in the Gemfile.

How is a Gemfile evaluated?

A Gemfile is evaluated as Ruby code, in a context which makes available a number of methods used to describe the gem requirements. At the top of the Gemfile, add a line for the Rubygems source that contains the gems listed in the Gemfile.

Where do I put a Gemfile in Ruby?

Place the Gemfile in the root of the directory containing the associated code. For instance, in a Rails application, place the Gemfile in the same directory as the Rakefile. A Gemfile is evaluated as Ruby code, in a context which makes available a number of methods used to describe the gem requirements.

How do I set the username and password for a Gemfile?

Use bundle config (1) to set the username and password for any of the sources that need it. The command must be run once on each computer that will install the Gemfile, but this keeps the credentials from being stored in plain text in version control.