Angular is a popular framework for building cross-platform applications. RubyMine provides support for Angular and helps you on every step of the development process – from creating a new Angular app and working on the components to debugging and testing it.
Before you start
Download and install Node.js.
Creating a new Angular application
The recommended way to start building a new Angular application is Angular CLI, which RubyMine downloads and runs for you using npx. As a result, your application is bootstrapped with a ready to use TypeScript and Webpack configuration.
Of course, you can download Angular CLI yourself or create an empty RubyMine project and install Angular in it.
In the left-hand pane, choose Angular CLI.
In the right-hand pane:
From the Angular CLI list, select npx --package @angular/cli ng.
Alternatively, for npm version 5.1 and earlier, install the
@angular/clipackage yourself by running
npm install -g @angular/cliin the Terminal Alt+F12. When creating an application, select the folder where the
@angular/clipackage is stored.
Optionally, in the Additional parameters field, specify the extra ng new options to pass to Angular CLI. Code completion is available in this field: as you start typing the name of an option or press Ctrl+Space, RubyMine shows you the available options and their description.
When you click Create, RubyMine generates an Angular-specific project with all the required configuration files and downloads all the newcessary dependencies.
To create an empty RubyMine project
To install Angular in an empty project
Open the empty project where you will use Angular.
npm install @angular/core
That will install the core Angular package with the critical runtime parts of the framework.
You may also need to install other packages that are parts of Angular, see the list of packages.
Starting with an existing Angular application
To continue developing an existing Angular application, open it in RubyMine and download the required dependencies.
To open the application sources that are already on your machine
To check out the application sources from your version control
Click Check out from Version Control on the Welcome screen or select from the main menu.
Select your version control system from the list.
In the VCS-specific dialog that opens, type your credentials and the repository to check out the application sources from.
To download the dependencies
Click Run 'npm install' in the popup:
Running and debugging an Angular application
Also, for applications created with Angular CLI RubyMine generates two run/debug configurations with default settings:
An npm configuration with the default name Angular CLI Server. This configuration runs the
ng servecommand that launches the development server and starts your application in the development mode.
To run an Angular application
For Angular CLI applications, select the Angular CLI Server run configuration from the list on the toolbar and click next to the list.
npm startin the Terminal Alt+F12 or double-click the
starttask in the npm tool window ( ).
Wait till the application is compiled and the Webpack development server is ready. Open your browser at http://localhost:4200/ to view the application.
When the development server is running, your application is automatically reloaded as soon as you change any of the source files and save the updates.
To debug an Angular application
Set the breakpoints in your code.
Start the application in the development mode as described above and wait till the application is compiled and the Webpack development server is ready.
To view the application, open your browser at the URL that is shown in the Run tool window, by default it is http://localhost:4200/.
If you are using another port or your application was not created with Angular CLI, copy the URL address at which your application is actually running, you will later specify this URL in a debug configuration.
If you created your application with Angular CLI and it is running on the default port
4200, RubyMine generates a default Angular Application configuration.
From the list of configurations, select the autogenerated Angular Application configuration or your newly created custom one and start a debugging session by clicking next to the list.
When the first breakpoint is hit, switch to the Debug Tool Window and proceed as usual: step through the program, stop and resume program execution, examine it when suspended, explore the call stack and variables, set watches, evaluate variables, view actual HTML DOM, and so on.
Navigating through an Angular application
Yet another way is the Related Symbol popup.
In an Angular component file, press Ctrl+Alt+Home. RubyMine shows a Related Symbol popup with a list of related files. In a TypeScript component file, the popup also lists all the symbols that were imported into this file.
To open a file, select it and press Enter. Alternatively, use the numbers associated with each file type:
The TypeScript file with the component class
Adding new features to an Angular application using ng add
In projects that use Angular CLI 6 or later, you can use the Angular Dependency action to add new libraries. This action runs the
ng add command which installs the dependency and updates the app with a special installation script. Note that not all libraries support installation with
Select Project tool window, and then select Angular Dependency.from the main menu or press Alt+Insert in the
From the list, select the library to add. The list shows the libraries that can be definitely installed with
ng add. To install a package that is not on the list, scroll to its end and double-click the Install package not listed above link, then specify the package name in the dialog that opens.
The example below illustrates adding Angular Material to a project.
If you manage dependencies manually through your package.json, RubyMine still recognizes packages that support
ng add. When you add such package to package.json, RubyMine suggests installing it with
If such dependency is already installed, you may still want to reinstall it with
ng add. In the package.json file, select the name of the package, press Alt+Enter, and click Reinstall with ng add.
Generating code with Angular Schematics
In Angular CLI 6 projects, RubyMine can generate code using both schematics defined in libraries like
@angular/material and those defined in Angular CLI itself. For earlier versions, RubyMine generates only components, services, and other blueprints defined in Angular CLI.
Select Project tool window, and then select Angular Schematic.from the main menu or press Alt+Insert in the
From the list, select the relevant schematic.
In the dialog that opens, specify the name of the schematic to be generated and additional options, if necessary. RubyMine shows the description of the schematic and provides code completion and description for available options.
Inspecting Angular application code
RubyMine brings a number of Angular-specific inspections that help you find errors as you edit your code and suggest quick-fixes for them.
In the example below, both a
template and a
templateUrl properties are used. RubyMine detects the error, warns you about it, and suggests a quick-fix.
Another example shows how RubyMine warns you about incorrect use of the
*ngFor structural directives.
To see the list of Angular-specific inspections and configure them
Expand the Angular node.
Configure inspection profiles and severity, disable and suppress predefined inspections, and create custom ones as described in Code inspections.
Using Angular Material Design components
RubyMine recognizes Angular Material components and attributes and provides coding assistance for them:
Completion for components
Completion for attributes
Navigation between a component or an attribute and its declaration (press Ctrl+B or selectfrom the context menu).
To install Angular Material
Configuring syntax highlighting
You can configure Angular-aware syntax highlighting according to your preferences and habits.
Select the color scheme, accept the highlighting settings inherited from defaults or customize them as described in Configuring Colors and Fonts.