Angular（7）扩展原理图

Question

I have several components for wich i wrote some schematics for installing that components. For maintainablility my schematics are in a separate package.

After merging my schematics from Angular6 to Angular7 my schematics cannot be found.

So in my "package.json" of my component:

 { "name": "@my-project/my-component", "version": "4.0.0", "dependencies": { "@my-project/schematics": "^2.0.0", "tslib": "^1.9.0" }, "peerDependencies": { "@angular/common": "^7.0.0", "@angular/core": "^7.0.0" }, "schematics": "./schematics/collection.json", } 

In "./schematics/collection.json":

 { "$schema": "./node_modules/@angular-devkit/schematics/collection-schema.json", "schematics": { "ng-add": { "extends" : "@my-project/schematics:my-component-install" } } } 

The "collections.json" of @my-project/schematics:

 { "$schema": "../node_modules/@angular-devkit/schematics/collection-schema.json", "schematics": { "my-component-install": { "description": "Schematics for installation of @my-project/my-component", "schema": "./my-component/install/schema.json", "factory": "./my-component/install/index" } } } 

So when executing "ng add @my-project/my-component" i get the message: 'Schematic "my-component-install" not found in collection "@my-project/my-comonent".' However in Angular6 this worked.

Can anyone tell me how to fix this?

Answer 1

I am a little confused with your structure, but I'll give my best shot — So if you have a schematics, let's say 'my-schematics' and it has 'ng-add' as a schematic. 'my-schematics' extends angular schematics, so it can do whatever angular schematics can do, but with additional logic. This is what the collection.json of 'my-schematics' would look like -

{
    “$schema”:.....
    “extends”: [
        “@schematics/angular”
    ],
    “schematics”: {
        “ng-add”: { 
            “description”:.., “factory”:..., “schema”:...
         }
     }
}

Now in your project you can call my-schematics:ng-add (and also my-schematics:component or any other angular schematic function)