Ruby on Rails is a widely-used web framework, preferred by many developers due to its intuitive syntax. It is the driving force behind some of the most renowned websites such as Twitter, Shopify and various online news outlets. This framework comes with libraries that can be easily shared by developers, which are referred to as Ruby gems or simply gems. If you are a developer interested in learning how to download and install Ruby gems from your Gemfile, this article is sure to be helpful.
Can you explain the purpose of Ruby stones?
Analogies can be useful for explaining complex concepts, and this is certainly true when it comes to understanding how Ruby gems work. Essentially, Ruby gems are like the libraries used in other programming languages, in that they enable developers to integrate code from one software into another. This makes it possible for them to reuse existing code and build upon it, without having to start from scratch.
The use of rubies enables one to
- Develop a program that runs on the web.
- Integration with third-party APIs and other services is a breeze.
- Integrate a login form into an existing Ruby on Rails project.
Because of its clear file structure and format, Ruby is a breeze to learn. The process is also pretty different.
The Ruby Gems List
RansackThis library stands out among its peers as a full-text search solution for the Rails framework. It offers the flexibility to build custom evaluation and sorting functionalities, while the default behaviour is already quite sensible. Furthermore, adding pagination support and other similar features requires minimal coding effort.
The Girl from the FactoryThis gem provides a factory object to streamline the process of creating factories. This is particularly useful if you need to use production facilities to generate test data. Thanks to its ActiveRecord basis, it allows you to create factories in Ruby instead of having to use SQL or any other specific language.
DevisePopular online projects such as Groupon, Facebook, and NumLooker have all made use of the Devise authentication solution due to its versatility when working with Rails. This authentication solution provides several useful functions straight out of the box, and boasts a lightweight design that makes installation a breeze. Additionally, Devise is a great choice for implementing authentication logic with Ruby.
When deciding on a Ruby version, which one should you use?
Now that you know what Ruby gems are available, we’ll go through the different versions of Ruby so you can make an informed selection.
Use the e -v option to indicate the command’s version number in real time:
Ruby: gem install gemname -v 3.14
When setting version numbers in a Gemfile, you have numerous choices.
- If you call (gem) with no version number, Gem will install the most recent version that is compatible with the other gems in your Gemfile.
- If you specify the exact version of a gem to install using the syntax (gem ‘gemname’, ‘3.14’), it will be installed. However, if that particular version is incompatible with any of the other gems specified in the Gemfile, the installation process will fail.
- By specifying an optimistic minimum version (e.g. gem ‘gemname’, ‘>=3.14’) in the Gemfile, one can ensure that the most up-to-date version of the gem will be installed. However, if none of the gems in the Gemfile have a version equal to or greater than 3.14, the installation process will not be successful.
- If you execute the command `gem ‘gemname’, ‘>3.14’`, the same results will be obtained as if you had run the command `gem ‘gemname’, ‘>=3.14’, ‘4’`, since the minimum version number is not taken into account. This principle effectively limits further increments of the number to only occur after the last digit.
The gold standard to adopt
Using a Ruby version management library, like rvm or rbenv, can be highly beneficial during the development process. These libraries will provide assistance with installing Ruby and its associated dependencies, ensuring that the correct version is being used. This is especially important when working with code that is designed to operate on a specific version of Ruby.
Gemfile downloads for Ruby
STEP 1: You should go online and look for a Ruby download to get started.
STEP 2: A Windows version of Ruby may be downloaded by clicking here (Ruby installer)
STEP 3: Just start the download by clicking the button.
STEP 4: In the new window that opens, choose the version that is compatible with your computer’s OS.
STEP 5: Simply double-click the downloaded file, agree to the terms of the licence, then follow the on-screen instructions to complete the installation.
Utilising Gemfile to set up Ruby gems
Please note that Ruby gems are not automatically included if you are not running Ruby 1.9 or later.
If you want to add a new Ruby extension, type the command into the box.
Just type gem install [gemname]
Any gems required by your project will be recorded in a Gemfile.
Include the following line of code in your project’s Gemfile if you want to install a new gem.
A ‘gemname’ is a ‘gem’
Note: The Gemfile is used by the Bundler gem to install the necessary dependencies for a project. You’ll need to have Bundler set up first.
So, let me show you.
Put in a Gem and Bundler
To use this, save the file and then type in the following command.
Convenient Setup Bundles
How to fix a non-running Ruby program
A missing gem is likely to blame if your Ruby application fails to launch. Make use of Bundler to install Ruby gems locally to fix the issue.
Bundler is an ideal dependency management gem for Ruby development, as it ensures that all the necessary gems and their respective versions are properly tracked and deployed for each project. This eliminates the need for complex reliance chains, ensuring that all required gems remain accessible throughout all stages of development, testing, and deployment.
Follow these steps to install and configure Bundler for usage with your RubyGem project.
Note: These instructions should be carried out once Ruby on Rails has been set up.
Start up a terminal and type in the following command.
Gem install bundler [server]$
Find the directory that contains the starting point of your project and enter it.
Using a Gemfile, you may list the required components.
With this command, you may install the necessary gems from the given locations.
(Server)$ bundle install
Note: By incorporating both the Gemfile.lock and Gemfile into the second command, it ensures that all collaborators working on the same project are utilising the same external libraries. This practice ensures that the project is able to progress with consistency and accuracy.
Use the following code to bring a packaged environment into your program.
needed ‘rubygems’ in need of ‘bundler/setup’
# Do a standard gem need, this time for’multi json’
Note: If you aren’t using RVM, go to the next section.
To launch an executable file that is packaged with a gem, use the following command.
Spec/models: [server]$ bundle exec rspec
Note: It is possible to launch an executable without using the “bundle exec” command if the executable has been previously installed on the system. However, this approach is not reliable and should be avoided as it may not work with incompatible versions of the bundle. While this may appear to be running successfully on the current machine, there is no guarantee that it will work on other machines or in the future.
Use the following command to create a shortcut to the gems in your bundle.
“$ bundle install —binstubs” [server] Specs/models $ bin/rspec
Information to supplement the first reading
Creating Ruby gems is a simple process when using Bundle. With the help of tools such as README, .gemspec, Rakefile and the appropriate directory structure, it is possible to create new Ruby gems with ease.
To what extent is it possible to customise the gem version in Gemfile?You may find older versions of your gem by searching rubygems.org. Gem “name-of-gem,” “>1.0” is the version operator to use.
Can I check the status of a Ruby gem installation?You may check whether the right version of a Ruby gem has been installed by using the gem list command.
Exactly where do you put in RubyGems?A user’s home directory is where Ruby gems are installed.
Where can I get instructions on how to set up gem packages?
- One Must First Set up Ruby.
- Next, Set up Gems.
- Third, set up Rails by use of gems.
- Stage 4: Set up Sqlite3.