在应用程序中导入时,Angular Library Route Module不起作用 [英] Angular Library Route Module does not work when imported in application
问题描述
我需要有关无法解决的问题的帮助。
我正在研究angular 7库,以便为应用程序添加模块化,但是在库中定义的模块路由在应用程序中安装时似乎无法使用。
I need a help about an issue that I cannot solve. I'm studying angular 7 library in order to add modularization to my application but module routes defined in library seems not work when install it in a application.
我已经创建了一个到github的项目来重现问题:
库测试 foo-lib
外部应用程序 foo-tester
I have created project to github to reproduce problem:
Library test foo-lib
External Applicationfoo-tester
在每个自述文件中,我都描述了如何重现此问题。
In each ReadMe file I have described how to reproduce this issue.
我创建了一个示例库(foo-lib),其路由模块已定义了子路由,然后在同一工作区中的一个简单应用程序中对其进行了构建和测试。
一切正常,并且库路由已正确添加到测试应用程序。
下一步,我导出构建的库,并通过npm link命令将其包含在另一个工作区的另一个应用示例中,并在此应用上运行ng serve命令。
使用这种配置,如果尝试获取库路由路径,就好像没有将它们添加到主路由模块中一样,则会收到错误消息。
I have created an example library (foo-lib) with its routing module with child route defined, then I had builded and tested it in a simple application in the same workspace. All worked fine, and library routing is correctly added to test application. On the next step I exported builded library and included it in another application example in another workspace by npm link command, and runed ng serve command on this app. With this configuration I received an error if try to achieve library route paths, as if they was not added to main route module.
Foo-lib-routing .module.ts
Foo-lib-routing.module.ts
import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
import { MainComponent } from './components/main/main.component';
import { NewFooCmpComponent } from './components/new-foo-cmp/new-foo-cmp.component';
const UP_ROUTES: Routes = [
{ path: 'main_path', component: MainComponent,
children: [
{ path: 'child', component: NewFooCmpComponent }
]
}
];
@NgModule({
imports: [RouterModule.forChild(UP_ROUTES)],
exports: [RouterModule]
})
export class FooLibRoutingModule { }
Foo-lib.module.ts
Foo-lib.module.ts
import { NgModule } from '@angular/core';
import { FooLibRoutingModule } from './foo-lib-routing.module';
import { MainComponent } from './components/main/main.component';
import { FooLibComponent } from './foo-lib.component';
import { NewFooCmpComponent } from './components/new-foo-cmp/new-foo-cmp.component';
@NgModule({
declarations: [
MainComponent,
FooLibComponent,
NewFooCmpComponent],
imports: [
FooLibRoutingModule
],
exports: [
FooLibComponent,
NewFooCmpComponent]
})
export class FooLibModule { }
app.module.ts
app.module.ts
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { RoutingModule } from './routing.module';
import { AppComponent } from './app.component';
import { WelcomeComponent } from './components/welcome/welcome.component';
import { NotFoundComponent } from './components/not-found/not-found.component';
import { FooLibModule } from '@foo/lib';
@NgModule({
declarations: [
AppComponent,
WelcomeComponent,
NotFoundComponent
],
imports: [
BrowserModule,
RoutingModule,
FooLibModule
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }
routing.module.ts
routing.module.ts
import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';
import { WelcomeComponent } from './components/welcome/welcome.component';
import { NotFoundComponent } from './components/not-found/not-found.component';
const APP_ROUTES: Routes = [
{ path: 'welcome', component: WelcomeComponent },
{ path: 'notfound', component: NotFoundComponent },
{ path: '', redirectTo: '/welcome', pathMatch: 'full' },
];
/**
* Main client routing configuration module
*/
@NgModule({
imports: [ RouterModule.forRoot(APP_ROUTES) ],
exports: [ RouterModule ]
})
export class RoutingModule {}
尝试导航到图书馆路线时控制台出现错误
Error show in console when try to navigate to library route
core.js:15714 ERROR Error: Uncaught (in promise): Error: Cannot match any routes. URL Segment: 'main_path/child'
Error: Cannot match any routes. URL Segment: 'main_path/child'
at ApplyRedirects.push../node_modules/@angular/router/fesm5/router.js.ApplyRedirects.noMatchError (router.js:2469)
推荐答案
最后,我建立了一个解决方案。我在下面描述它以帮助社区。
在这种情况下,我们需要在构建部分的主应用程序angular.json中添加 preserveSymlinks:true选项,该应用程序是通过npm link命令导入外部库的。
Finally I founded a solution. I describe it below in order to help community. In this scenario we need to add "preserveSymlinks": true option in build sectionto main application angular.json, the one that imported external library by npm link command.
"architect": {
"build": {
"builder": "@angular-devkit/build-angular:browser",
"options": {
"preserveSymlinks": true,
希望这对以后有帮助。
谢谢
这篇关于在应用程序中导入时,Angular Library Route Module不起作用的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!