javascript - angular material datepicker




Angular 2 Material 2 datepicker日期格式 (8)

Igor的回答对我不起作用,所以我直接询问了 Angular 2 Material的github ,有人给了我那个对我 有用的 答案:

  1. 首先编写自己的适配器:

    import { NativeDateAdapter } from "@angular/material";
    
    
    export class AppDateAdapter extends NativeDateAdapter {
    
        format(date: Date, displayFormat: Object): string {
    
            if (displayFormat === 'input') {
    
                const day = date.getDate();
                const month = date.getMonth() + 1;
                const year = date.getFullYear();
    
                return `${day}-${month}-${year}`;
            }
    
            return date.toDateString();
        }
    }
  2. 创建日期格式:

    export const APP_DATE_FORMATS =
    {
        parse: {
            dateInput: { month: 'short', year: 'numeric', day: 'numeric' },
        },
        display: {
            dateInput: 'input',
            monthYearLabel: { year: 'numeric', month: 'numeric' },
            dateA11yLabel: { year: 'numeric', month: 'long', day: 'numeric' },
            monthYearA11yLabel: { year: 'numeric', month: 'long' },
        }
    };
  3. 将这两个提供给您的模块

    providers: [
            {
                provide: DateAdapter, useClass: AppDateAdapter
            },
            {
                provide: MAT_DATE_FORMATS, useValue: APP_DATE_FORMATS
            }
        ]

这里有 更多的信息

我需要帮助。 我不知道如何更改材料2 datepicker的日期格式。 我已阅读文档,但我不明白我实际需要做什么。 datepicker默认提供的输出日期格式为fe:6/9/2017

我想要实现的是将格式更改为2017年6月9日或其他任何其他格式。

文档 https://material.angular.io/components/component/datepicker 对我没有任何帮助。 提前致谢


Robouste工作得很完美!!

我做了一个简单的(Angular 4“@ angular / material”:“^ 2.0.0-beta.10”)首先制作了datepicker.module.ts



    import { NgModule }  from '@angular/core';
    import { MdDatepickerModule, MdNativeDateModule, NativeDateAdapter, DateAdapter, MD_DATE_FORMATS  }  from '@angular/material';

    class AppDateAdapter extends NativeDateAdapter {
        format(date: Date, displayFormat: Object): string {
            if (displayFormat === 'input') {
                const day = date.getDate();
                const month = date.getMonth() + 1;
                const year = date.getFullYear();
                return `${year}-${month}-${day}`;
            } else {
                return date.toDateString();
            }
        }
    }

    const APP_DATE_FORMATS = {
    parse: {
    dateInput: {month: 'short', year: 'numeric', day: 'numeric'}
    },
    display: {
    // dateInput: { month: 'short', year: 'numeric', day: 'numeric' },
    dateInput: 'input',
    monthYearLabel: {year: 'numeric', month: 'short'},
    dateA11yLabel: {year: 'numeric', month: 'long', day: 'numeric'},
    monthYearA11yLabel: {year: 'numeric', month: 'long'},
    }
    };

    @NgModule({
    declarations:  [ ],
    imports:  [ ],
        exports:  [ MdDatepickerModule, MdNativeDateModule ],
    providers: [
    {
        provide: DateAdapter, useClass: AppDateAdapter
    },
    {
        provide: MD_DATE_FORMATS, useValue: APP_DATE_FORMATS
    }
    ]
    })

    export class DatePickerModule {

    }

只需导入它(app.module.ts)


    import {Component, NgModule, VERSION,  ReflectiveInjector}   from '@angular/core'//NgZone,
    import { CommonModule }              from '@angular/common';
    import {BrowserModule}               from '@angular/platform-browser'
    import { BrowserAnimationsModule }        from '@angular/platform-browser/animations';
    import { FormsModule }              from '@angular/forms';
    import { DatePickerModule }            from './modules/date.picker/datepicker.module';

    @Component({
    selector: 'app-root',
    template: `
    <input (click)="picker.open()" [mdDatepicker]="picker" placeholder="Choose a date" [(ngModel)]="datepicker.SearchDate"  >
    <md-datepicker-toggle mdSuffix [for]="picker"></md-datepicker-toggle>
    <md-datepicker #picker touchUi="true"  ></md-datepicker>
    `,
    })


    export class App{
        datepicker = {SearchDate:new Date()}
        constructor( ) {}

        }

    @NgModule({
    declarations: [ App ],
    imports: [ CommonModule, BrowserModule, BrowserAnimationsModule, FormsModule, DatePickerModule],
    bootstrap: [ App ],
    providers: [   ]//NgZone
    })
    export class AppModule {}

为日期格式创建常量。

export const DateFormat = {
parse: {
  dateInput: 'input',
  },
  display: {
  dateInput: 'DD-MMM-YYYY',
  monthYearLabel: 'MMMM YYYY',
  dateA11yLabel: 'MM/DD/YYYY',
  monthYearA11yLabel: 'MMMM YYYY',
  }
};

并在app模块中使用以下代码

 providers: [
  { provide: DateAdapter, useClass: MomentDateAdapter, deps: [MAT_DATE_LOCALE] },
  { provide: MAT_DATE_FORMATS, useValue: DateFormat }
]

对我有用的工作是:

my.component.html:

<md-input-container>
  <input mdInput disabled [ngModel]="someDate | date:'d-MMM-y'" >
  <input mdInput [hidden]='true' [(ngModel)]="someDate"  
[mdDatepicker]="picker">
  <button mdSuffix [mdDatepickerToggle]="picker"></button>
</md-input-container>
<md-datepicker #picker></md-datepicker> 

my.component.ts :


@Component({...
})
export class MyComponent implements OnInit {
  ....
  public someDate: Date;
  ...

所以现在你可以拥有最适合你的格式(例如'd-MMM-y')。


您很可能已经使用了一个库,它为您提供了一种在JavaScript中操作(解析,验证,显示等)日期和时间的便捷方式。 如果你不这样做,请看看其中一个,例如 moment.js

使用moment.js实现自定义适配器将如下所示。

创建 CustomDateAdapter.ts 并实现如下:

import { NativeDateAdapter } from "@angular/material";
import * as moment from 'moment';

export class CustomDateAdapter extends NativeDateAdapter {
    format(date: Date, displayFormat: Object): string {
        moment.locale('ru-RU'); // Choose the locale
        var formatString = (displayFormat === 'input')? 'DD.MM.YYYY' : 'LLL';
        return moment(date).format(formatString);
    }
}

在你的 app.module.ts中

import { DateAdapter } from '@angular/material';

providers: [
    ...
    {
        provide: DateAdapter, useClass: CustomDateAdapter
    },
    ...
]

而已。 简单,轻松,无需重新发明自行车。


我使用@ igor-janković提出的解决方案并遇到了“错误:未捕获(承诺):TypeError:无法读取未定义的属性'dateInput'”的问题。 我意识到这个问题是因为 MY_DATE_FORMATS 需要声明类似 type MdDateFormats

export declare type MdDateFormats = {
    parse: {
        dateInput: any;
    };
    display: {
        dateInput: any;
        monthYearLabel: any;
        dateA11yLabel: any;
        monthYearA11yLabel: any;
    };
};

因此,声明 MY_DATE_FORMATS 的正确方法是:

const MY_DATE_FORMATS:MdDateFormats = {
   parse: {
       dateInput: {month: 'short', year: 'numeric', day: 'numeric'}
   },
   display: {
       dateInput: 'input',
       monthYearLabel: {year: 'numeric', month: 'short'},
       dateA11yLabel: {year: 'numeric', month: 'long', day: 'numeric'},
       monthYearA11yLabel: {year: 'numeric', month: 'long'},
   }
};

通过上述修改,解决方案适合我。

问候


这是我找到的唯一解决方案:

首先,创建const:

const MY_DATE_FORMATS = {
   parse: {
       dateInput: {month: 'short', year: 'numeric', day: 'numeric'}
   },
   display: {
       // dateInput: { month: 'short', year: 'numeric', day: 'numeric' },
       dateInput: 'input',
       monthYearLabel: {year: 'numeric', month: 'short'},
       dateA11yLabel: {year: 'numeric', month: 'long', day: 'numeric'},
       monthYearA11yLabel: {year: 'numeric', month: 'long'},
   }
};

然后你必须扩展NativeDateADapter:

export class MyDateAdapter extends NativeDateAdapter {
   format(date: Date, displayFormat: Object): string {
       if (displayFormat == "input") {
           let day = date.getDate();
           let month = date.getMonth() + 1;
           let year = date.getFullYear();
           return this._to2digit(day) + '/' + this._to2digit(month) + '/' + year;
       } else {
           return date.toDateString();
       }
   }

   private _to2digit(n: number) {
       return ('00' + n).slice(-2);
   } 
}

在格式化功能中,您可以选择所需的任何格式

最后一步,您必须将其添加到模块提供程序中:

providers: [
    {provide: DateAdapter, useClass: MyDateAdapter},
    {provide: MD_DATE_FORMATS, useValue: MY_DATE_FORMATS},
],

就是这样。 我无法相信没有一些简单的方法可以通过@Input更改日期格式,但我们希望它将在未来版本的材料2(目前为 beta 6 )中实现。


创建一个date.adapter.ts文件

import { NativeDateAdapter, DateAdapter, MAT_DATE_FORMATS, MatDateFormats } from "@angular/material";

export class AppDateAdapter extends NativeDateAdapter {
    parse(value: any): Date | null {
        if ((typeof value === 'string') && (value.indexOf('/') > -1)) {
          const str = value.split('/');
          const year = Number(str[2]);
          const month = Number(str[1]) - 1;
          const date = Number(str[0]);
          return new Date(year, month, date);
        }
        const timestamp = typeof value === 'number' ? value : Date.parse(value);
        return isNaN(timestamp) ? null : new Date(timestamp);
      }
   format(date: Date, displayFormat: string): string {
       if (displayFormat == "input") {
          let day = date.getDate();
          let month = date.getMonth() + 1;
          let year = date.getFullYear();
          return   year + '-' + this._to2digit(month) + '-' + this._to2digit(day)   ;
       } else if (displayFormat == "inputMonth") {
          let month = date.getMonth() + 1;
          let year = date.getFullYear();
          return  year + '-' + this._to2digit(month);
       } else {
           return date.toDateString();
       }
   }
   private _to2digit(n: number) {
       return ('00' + n).slice(-2);
   }
}
export const APP_DATE_FORMATS =
{
   parse: {
       dateInput: {month: 'short', year: 'numeric', day: 'numeric'}
   },
   display: {
       dateInput: 'input',
       monthYearLabel: 'inputMonth',
       dateA11yLabel: {year: 'numeric', month: 'long', day: 'numeric'},
       monthYearA11yLabel: {year: 'numeric', month: 'long'},
   }
}

app.module.ts

  providers: [
    DatePipe,
    {
        provide: DateAdapter, useClass: AppDateAdapter
    },
    {
        provide: MAT_DATE_FORMATS, useValue: APP_DATE_FORMATS
    }
    ]

app.component.ts

import { FormControl } from '@angular/forms';
import { DatePipe } from '@angular/common';
@Component({
  selector: 'datepicker-overview-example',
  templateUrl: 'datepicker-overview-example.html',
  styleUrls: ['datepicker-overview-example.css'],
  providers: [
    DatePipe,
    {
        provide: DateAdapter, useClass: AppDateAdapter
    },
    {
        provide: MAT_DATE_FORMATS, useValue: APP_DATE_FORMATS
    }
    ]
})
export class DatepickerOverviewExample {
  day = new Date();
  public date;
 constructor(private datePipe: DatePipe){
    console.log("anh "," " +datePipe.transform(this.day.setDate(this.day.getDate()+7)));
    this.date = new FormControl(this.datePipe.transform(this.day.setDate(this.day.getDate()+7)));
    console.log("anht",' ' +new Date());
 }
}

app.component.html

<mat-form-field>
  <input matInput [matDatepicker]="picker" placeholder="Choose a date" [formControl]="date">
  <mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
  <mat-datepicker #picker></mat-datepicker>
</mat-form-field>




angular-material2