feat(cli): add repositorymixin and imports by a new switch

add the switch --enableRepository to CLI to automatically add the juggler imports and include
RepositoryMixin in the extended class

fix #1594

Author: marioestradarosa

packages/cli/generators/app/index.js

@@ -11,6 +11,7 @@ module.exports = class AppGenerator extends ProjectGenerator {
   // Note: arguments and options should be defined in the constructor.
   constructor(args, opts) {
     super(args, opts);
+    this.buildOptions.push('enableRepository');
   }
 
   _setupGenerator() {
@@ -21,6 +22,11 @@ module.exports = class AppGenerator extends ProjectGenerator {
       description: 'Application class name',
     });
 
+    this.option('enableRepository', {
+      type: Boolean,
+      description: 'Include repository imports and RepositoryMixin',
+    });
+
     return super._setupGenerator();
   }
 

packages/cli/generators/app/templates/src/application.ts.ejs

@@ -5,9 +5,22 @@ import {MySequence} from './sequence';
 /* tslint:disable:no-unused-variable */
 // Binding and Booter imports are required to infer types for BootMixin!
 import {BootMixin, Booter, Binding} from '@loopback/boot';
+<% if (project.enableRepository) { -%>
+
+// juggler imports are required to infer types for RepositoryMixin!
+import {
+  Class,
+  Repository,
+  RepositoryMixin,
+  juggler,
+} from '@loopback/repository';
+<% } -%>
 /* tslint:enable:no-unused-variable */
 
-export class <%= project.applicationName %> extends BootMixin(RestApplication) {
+export class <%= project.applicationName %> <% if (!project.enableRepository) {-%>extends BootMixin(RestApplication) {<% } else { -%>extends BootMixin(
+  RepositoryMixin(RestApplication),
+) {
+<% } -%>
   constructor(options?: ApplicationConfig) {
     super(options);
 

packages/cli/test/integration/generators/app.integration.js

@@ -31,7 +31,11 @@ describe('app-generator specific files', () => {
     assert.file('src/application.ts');
     assert.fileContent(
       'src/application.ts',
-      /class MyAppApplication extends BootMixin\(RestApplication/,
+      /class MyAppApplication extends BootMixin\(/,
+    );
+    assert.fileContent(
+      'src/application.ts',
+      /RepositoryMixin\(RestApplication\)/,
     );
     assert.fileContent('src/application.ts', /constructor\(/);
     assert.fileContent('src/application.ts', /this.projectRoot = __dirname/);
@@ -66,10 +70,14 @@ describe('app-generator with --applicationName', () => {
       .withPrompts(props);
   });
   it('generates all the proper files', () => {
+    assert.file('src/application.ts');
+    assert.fileContent('src/application.ts', /class MyApp extends BootMixin\(/);
+  });
+  it('generates the application with RepositoryMixin', () => {
     assert.file('src/application.ts');
     assert.fileContent(
       'src/application.ts',
-      /class MyApp extends BootMixin\(RestApplication/,
+      /RepositoryMixin\(RestApplication\)/,
     );
   });
 });
@@ -95,10 +103,14 @@ function testFormat() {
       .withPrompts(props);
   });
   it('generates all the proper files', () => {
+    assert.file('src/application.ts');
+    assert.fileContent('src/application.ts', /class MyApp extends BootMixin\(/);
+  });
+  it('generates the application with RepositoryMixin', () => {
     assert.file('src/application.ts');
     assert.fileContent(
       'src/application.ts',
-      /class MyApp extends BootMixin\(RestApplication/,
+      /RepositoryMixin\(RestApplication\)/,
     );
   });
 }