![]() ![]() tmp/stack.rb:6:in 'method2': undefined local variable or method 'invalid_variable' for main:Object (NameError) Running this code will give you the following error: If the problem is that your program is crashing, it is important to pay attention to the error message, which usually will contain clues of what’s going wrong. When you are getting an error from the Ruby interpreter or your program is not doing what it should be doing then it’s time to put on your debugging hat. Using the techniques discussed in this article you will learn how to deal with this issue and similar problems! Understanding Errors & Stack Traces This means that a nil value managed to find it’s way into our code. You may be familiar with the following error message: undefined method 'some_method' for nil:NilClass Many times our programs dont’t work like we expect, so we have to use the art of debugging ruby to help us finding out why. You can navigate through this report and fix or suppress specific warnings.How often does your program do exactly what you want the first time around? The inspection results window will show warnings for a whole project. Leave the Whole project option and click OK. In the invoked dialog, you can specify the desired inspection scope. To do this, select Code | Inspect Code in the main menu. You can also check the entire project and display all warnings in a single report. The editor will suggest you fixing all issues related to incorrect gems ordering. Place the caret next to the bcrypt gem and press Alt+Enter. RubyMine will display a Rubocop message that notifies you about necessity to order gems in the alphabetical order (see OrderedGems). Hover the mouse pointer over the warning displayed for the bcrypt gem. Letâs open the Gemfile containing a list of gems used by the application. If this gem not installed, RubyMine will suggest doing this. The RuboCop inspection is enabled in RubyMine by default and requires the RuboCop gem to be installed in the projectâs SDK. RubyMine supports multiple inspection types and, moreover, allows displaying RuboCop offenses inside the IDE. In this part, weâll perform static code analysis and detect problems. Now we can try some features in the editor. In the Bundle Install dialog, click Install. Then, select the bundle install command from the list and press Enter. To install gems, press Ctrl twice again and start typing bundle install. Now you can use Bundler commands within RubyMine. Press Enter and wait until the Bundler gem is installed. To install Bundler, press Ctrl twice and enter the following command: gem install bundler. RubyMine allows you to use Bundler to manage gems. Now, letâs install the gems specified in the Gemfile. You can also use interpreters managed by other version managers or installed using the package management system of your operating system. In this tutorial, we use RVM to manage Ruby interpreters. Press Ctrl+Alt+S to open the Settings/Preferences dialog, go to the Languages & Frameworks | Ruby SDK and Gems page and choose the required interpreter. Select Ruby interpreter and install gem dependenciesĪfter youâve opened the project, it is necessary to select the required Ruby interpreter and install the dependencies specified in the project's Gemfile: Indexing occurs when you open a project for the first time, install dependencies, add new files to a project, get updates from a version control system, or switch branches. This is required for code insight features such as code completion and navigation. ![]() RubyMine indexes your project to analyze its sources and collects the information on available files, class and method definitions, and so on. You can see the progress in the Status Bar. ![]() ![]() RubyMine opens the directory and starts the indexing process. RubyMine will show a progress bar indicating a cloning process.Īfter cloning the repository, you will be prompted to open the directory containing the project. Insert the following address to the URL field:Ĭlick the Clone button. Make sure that Git is selected in the Version control field. In the Get from Version Control dialog, do the following: Run RubyMine and click Get from Version Control on the Welcome Screen. First of all, we need to clone the repository containing the sample application: ![]()
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