小编Geo*_*tin的帖子

我希望这张图片能解释我想做的事情。

所以我想做一个共享相同 formControlName 的自定义无线电组件。单击单选按钮时，共享相同 formControlName 的其余组件应更新为活动值。

我该怎么做？

您好，我尝试做一个Web应用程序，但是我遇到了问题。当我从/ oauth / token请求令牌时，收到以下响应：

{"error":"unsupported_grant_type","message":"The authorization grant type is not supported by the authorization server.","hint":"Check the `grant_type` parameter"}

我的代码是：

import { Injectable } from '@angular/core';
import { Http, Response, RequestOptions, Headers } from '@angular/http';
import { Observable } from 'rxjs/Observable';
import 'rxjs/Rx';

@Injectable()
export class UserService {

    private API: string = 'api/';
    private OAuth: string = 'oauth/'

    constructor(private _HTTP: Http) { }

    private get_header(): RequestOptions {
        let headers = new Headers();
        headers.append('Access-Control-Allow-Origin', '*' ); 
        headers.append('Content-Type', 'application/x-www-form-urlencoded' );  
        return new RequestOptions({ …

完整错误：

Exception has occurred.
Illuminate\Contracts\Filesystem\FileNotFoundException: File does not exist at path D:\Projects\shop\back-end\storage\framework/cache/data/9c/1c/9c1c01dc3ac1445a500251fc34a15d3e75a849df

我试过 php artisan cache:clear, php artisan config:cache。没有结果..

我正在尝试在控制器内部执行路由/api/user/signin ，以将 Guzzle HTTP post 发送到/oauth/token。很棒，但是服务器停顿了。我发现了这个：/sf/answers/3244527821/

那我该怎么办呢？如何在没有 HTTP 请求的情况下调用 /oauth/token？我可以“创建”一个请求类并传递给该函数吗？

我开始学习Angular2,但是..我试着在我的组件中创建一个服务并导入,但是我收到了这个错误:

错误TS2339:属性'commentService'在类型'CommentsComponent'上不存在.

comment.service.ts

import { Injectable } from '@angular/core';


@Injectable()
export class CommentService {
    testfunction() {
        return 'valoare';
    }
}

comments.component.ts

import { Component, OnInit } from '@angular/core';
import { CommentService } from '../services/comment.service';

@Component({
  template: 'dadada',
  providers: [CommentService]
})

export class CommentsComponent implements OnInit {
    construct(commentService: CommentService) {
    }

    ngOnInit() { 
        console.log( this.commentService.testfunction() ); 
    }
}

app.component.ts

import { Component } from '@angular/core';
import { ROUTER_DIRECTIVES } from '@angular/router';

@Component({
  selector: '[web-application]',
  templateUrl: 'template/home',
  directives: [ROUTER_DIRECTIVES]
})
export class …

我如何在*ngIf中使用抽象函数？

export abstract class Item
{
    constructor(name: string, url: string, image: string)
    {
        this.name = name;
        this.url = url;
        this.image = image;
    }

    private name?: string;
    private url?: string;
    private image?: string;

    public abstract isText(): boolean;
    public abstract isLink(): boolean;
    public abstract isImage(): boolean;

    public get Name(): string 
    {
        return this.name;
    }

    public get Url(): string 
    {
        return this.url;
    }

    public get Image(): string 
    {
        return this.image;
    }
}

export class Image extends Item 
{
    constructor(url:string, image: string)
    {
        super(undefined, …