我对外部化了解不多。我在Angular中创建一个月选择器。在我的typesccript文件中,我有一个数月的硬编码名称:
arr = ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'];
我的上级告诉我将它们外部化到一个单独的json文件中,以便以后可以根据需要轻松对其进行修改。现在,我将向您展示我的代码。
monthpicker.component.ts
import { Component,OnInit } from '@angular/core';
import { TranslateService } from '@ngx-translate/core';
@Component({
...
})
export class MonthpickerComponent implements OnInit {
constructor(private translate: TranslateService){
}
//arr = ['Jan',... 'Nov','Dec'];
monthArray = []; /* USING A DIFFERENT EMPTY ARRAY INSTEAD*/
translateCard(): void {
this.translate
.get([
'Months.January','Months.February',...
'Months.December'
])
.subscribe(translations => {
this.monthArray.push(translations['Months.January']);
this.monthArray.push(translations['Months.February']);
...
this.monthArray.push(translations['Months.December']);
});
console.log(this.monthArray);
}
ngOnInit(): void {
this.translateCard();
}
/* CODE TO READ MONTH NAMES AND RENDER IN HTML*/
n = 4;
matrix: any = Array.from({ length: Math.ceil(this.monthArray.length / this.n) },(_,i) => i).map(i =>
this.monthArray.slice(i * this.n,i * this.n + this.n).map(x => ({
monthName: x,isSelected: false
}))
);
...
}
monthpicker.component.html
<div *ngFor="let row of matrix" class="my-table">
<span *ngFor="let x of row">
<span class="month-name">
{{ x.monthName }}
</span>
</span>
</div>
还有 en-US.json
{
"Months": {
"January": "Jan","February": "Feb",...
"October": "Oct","November": "Nov","December": "Dec"
}
}
这是我所有的代码。控制台上甚至没有一个错误或警告。实际上console.log(this.monthArray[])
也可以正确打印所有月份。但是在前端,我的月选择面板绝对空白。什么都没发生。我认为我的电话在这里是异步的:
ngOnInit(): void {
this.translateCard();
}
我尝试了safely use translate.instant()和许多其他解决方案,但还是空白。请更正我的实现问题。