fix(page): properly handle project selection

Fixes #34

schematics/page/index.ts

@@ -2,9 +2,9 @@ import { Path, join, normalize, strings } from '@angular-devkit/core';
 import { DirEntry, Rule, SchematicsException, Tree, apply, branchAndMerge, chain, filter, mergeWith, move, noop, template, url } from '@angular-devkit/schematics';
 import { findNodes } from '@schematics/angular/utility/ast-utils';
 import { Change, InsertChange } from '@schematics/angular/utility/change';
-import { getWorkspace } from '@schematics/angular/utility/config';
 import { ModuleOptions, buildRelativePath } from '@schematics/angular/utility/find-module';
 import { parseName } from '@schematics/angular/utility/parse-name';
+import { buildDefaultPath, getProject } from '@schematics/angular/utility/project';
 import { validateHtmlSelector, validateName } from '@schematics/angular/utility/validation';
 import * as ts from 'typescript';
 
@@ -151,16 +151,14 @@ function buildSelector(options: PageOptions, projectPrefix: string) {
 
 export default function(options: PageOptions): Rule {
   return (host, context) => {
-    const workspace = getWorkspace(host);
-
     if (!options.project) {
-      options.project = Object.keys(workspace.projects)[0];
+      throw new SchematicsException('Option (project) is required.');
     }
 
-    const project = workspace.projects[options.project];
+    const project = getProject(host, options.project);
 
     if (options.path === undefined) {
-      options.path = `/${project.root}/src/app`;
+      options.path = buildDefaultPath(project);
     }
 
     options.module = findRoutingModuleFromOptions(host, options);