1. Opening Several Projects in One Window
Any opened project may become the main project after another one is added. The main project is always placed at the top of the list of projects in all views and in the Settings. So first of all open the project supposed to be the main one (railsapp1).
To add another project (railsapp2) to the main one, go to File | Open... menu, and in the Open Project dialog check the Open in current window -> Add to currently opened projects option:
The railsapp2 project appears in the tree and if you expand the node, you can see the whole structure of the project. The Ruby SDK related to the project is available as well:
Once the project was added you can delete it from the list. To remove any project except the main one navigate to it in the project tree, right-click it and choose the Remove from Project View option:
If the window with several projects was closed you can reopen it with a help of File| Open Recent menu. Multiple projects will be separated by a comma started with the main one:
2. Managing SDK and Gems
To change the settings of Ruby SDK for a project, go to the Settings -> Ruby SDK and Gems. All projects will be displayed in the list. Select a project and then select an SDK:
To add a new SDK, click + under the list:
All SDKs are available with related gemsets in the list. To install/update gems, press + under the list of gems:
3. Navigating Through the Source Code
Files from all opened projects are available for navigation. For example when navigating to a class (Navigate | Class...) the name of the project appears in the right:
4. Using Rails Generators, Bundler Commands, Rake Tasks, Diagrams, etc.
To invoke any action for the project such as Rails generator (Tools | Run Rails Generator...), Rake task (Tools | Run Rake Task...), Bundler command (Tools | Bundler), and others, first you need to set the context. Selecting a context means that a project is selected in the project tree or a file from this project is opened in the editor and has the focus. Navigation bar (View | Navigation Bar) can be a good context prompter as it always shows the context selected:
For example, select the project before invoking the generator's list:
2. Running and Debugging
When several projects are opened in one window run configurations are created with the name of the project as a postfix:
So to run/debug/test the project, use one of the default run configurations or create a new one. Creating a new run configuration requires choosing the context first.
7. Working with Version Control Systems
VCS settings are available for each project:
8. Deploying Several Projects
Deployment settings are defined per project. When you deploy to a remote host, you can set the mapping in Settings for each project if you need:
When you use the Capistrano framework, just select the context and capify the application. Capistrano tasks will be available if the corresponding project have a context.