angular - Angular:我将如何链接 Mat-paginator 的 pageSize 以呈现该数量的项目?
问题描述
我有mat-accordion
多个mat-expansion-panel
. 我想为手风琴应用分页。下面是我的代码:
HTML
<mat-accordion displayMode="flat" multi class="mat-table">
<section class="mat-elevation-z2 mat-header-row">
<span class="mat-header-cell">User Id</span>
<span class="mat-header-cell">Name</span>
<span class="mat-header-cell">Exam Name</span>
<span class="mat-header-cell">Exam Category</span>
</section>
<mat-expansion-panel *ngFor="let result of results">
<mat-expansion-panel-header class="mat-row">
<span class="mat-cell">{{ result.user.id }}</span>
<span class="mat-cell">
{{ result.user.firstName[0].toUpperCase() + result.user.firstName.substr(1).toLowerCase() }}
{{ result.user.middleName!=='' ? ' ' + result.user.middleName[0].toUpperCase() + result.user.middleName.substr(1).toLowerCase() + ' ' : '' }}
{{ ' ' + result.user.lastName[0].toUpperCase() + result.user.lastName.substr(1).toLowerCase()}}
</span>
<span class="mat-cell">{{ result.exam.examName }}</span>
<span class="mat-cell">{{ result.exam.examCategory.examCategoryName }}</span>
</mat-expansion-panel-header>
<div class="row">
<div class="col">
<h3>Personal Details:</h3> <br>
Email: {{ result.user.emailId }} <br>
Phone: {{ result.user.mobileNumber }} <br>
Gender: {{ result.user.gender }} <br>
Age: {{ result.user.age }} <br>
City: {{ result.user.city }} <br>
State: {{ result.user.state }} <br>
Country: {{ result.user.country }}
</div>
<div class="col">
<h3>Education Details:</h3> <br>
College: {{ result.user.college }} <br>
Degree: {{ result.user.degree }} <br>
Graduation Year: {{ result.user.graduationYear }} <br>
Graduation Percentage: {{ result.user.graduationPercentage }} <br>
Skills: {{ result.user.skills }}
</div>
<div class="col" *ngFor="let resultDetail of result.resultDetailSet;">
<h3>
{{ resultDetail.examDetail.questionCategory.questionCategoryName }} -
Marks: {{ resultDetail.examDetail.section.marksPerQuestion }}
</h3> <br>
Number of Questions: {{ resultDetail.examDetail.numberOfQuestions }} <br>
Marks Obtained: {{ resultDetail.obtainedMarks }}/{{ resultDetail.totalMarks }} <br>
</div>
</div>
</mat-expansion-panel>
</mat-accordion>
<mat-paginator #paginator [length]="length" [pageSize]="pageSize" [pageSizeOptions]="pageSizeOptions" (page)="pageEvent = $event" showFirstLastButtons></mat-paginator>
TS
results = [];
length: number;
pageSize = 5;
pageSizeOptions: number[] = [1, 2, 5, 10];
pageEvent: PageEvent;
@ViewChild(MatPaginator, {static: true}) paginator: MatPaginator;
setPageSizeOptions(setPageSizeOptionsInput: string) {
if (setPageSizeOptionsInput) {
this.pageSizeOptions = setPageSizeOptionsInput.split(',').map(str => +str);
}
}
ngOnInit() {
this.adminService.getCandidateResult().subscribe(response => {
this.results = response.resultList;
this.length = this.results.length;
this.isLoading = false;
});
}
根据 Angular Material 中 Paginator 的文档,这是我到目前为止的代码。如果我给出选择,分页器视图将完美地改变,但是我将如何将手风琴与它链接并根据pageSize
输入或前进/后退更改视图?
请给我一个答案。
解决方案
正如我在评论中提到的,最好在服务器端控制分页,但在这里我们认为您在 ngOnInit 中加载所有数据。
HTML:
- 结果 -> 选定结果
- 对于大写的第一个字符,在管道中使用 titlecase
- 将 getData 添加到 mat-paginator 中的 pageEvent
<mat-accordion displayMode="flat" multi class="mat-table">
<section class="mat-elevation-z2 mat-header-row">
<span class="mat-header-cell">User Id</span>
<span class="mat-header-cell">Name</span>
<span class="mat-header-cell">Exam Name</span>
<span class="mat-header-cell">Exam Category</span>
</section>
<mat-expansion-panel *ngFor="let result of selectedResult">
<mat-expansion-panel-header class="mat-row">
<span class="mat-cell">{{ result.user.id }}</span>
<pre>
</pre>
<span class="mat-cell">
{{ result.user.firstName | titlecase }}
{{ result.user.middleName | titlecase }}
{{ result.user.lastName | titlecase }}
</span>
<span class="mat-cell">{{ result.exam.examName }} </span>
<span class="mat-cell">{{ result.exam.examCategory.examCategoryName }} </span>
</mat-expansion-panel-header>
<div class="row">
<div class="col">
<h3>Personal Details:</h3> <br>
Email: {{ result.user.emailId }} <br>
Phone: {{ result.user.mobileNumber }} <br>
Gender: {{ result.user.gender }} <br>
Age: {{ result.user.age }} <br>
City: {{ result.user.city }} <br>
State: {{ result.user.state }} <br>
Country: {{ result.user.country }}
</div>
<div class="col">
<h3>Education Details:</h3> <br>
College: {{ result.user.college }} <br>
Degree: {{ result.user.degree }} <br>
Graduation Year: {{ result.user.graduationYear }} <br>
Graduation Percentage: {{ result.user.graduationPercentage }} <br>
Skills: {{ result.user.skills }}
</div>
<div class="col" *ngFor="let resultDetail of result.resultDetailSet;">
<h3>
{{ resultDetail.examDetail.questionCategory.questionCategoryName }} -
Marks: {{ resultDetail.examDetail.section.marksPerQuestion }}
</h3> <br>
Number of Questions: {{ resultDetail.examDetail.numberOfQuestions }} <br>
Marks Obtained: {{ resultDetail.obtainedMarks }}/{{ resultDetail.totalMarks }} <br>
</div>
</div>
</mat-expansion-panel>
</mat-accordion>
<mat-paginator #paginator [length]="length" [pageSize]="pageSize"
[pageSizeOptions]="pageSizeOptions" (page)="pageEvent = getData($event)" showFirstLastButtons></mat-paginator>
TS:
results = [];
selectedResult = [];
length: number;
pageSize = 5;
pageSizeOptions: number[] = [1, 2, 5, 10];
pageEvent: PageEvent;
// @ViewChild(MatPaginator, {static: true}) paginator: MatPaginator;
setPageSizeOptions(setPageSizeOptionsInput: string) {
if (setPageSizeOptionsInput) {
this.pageSizeOptions = setPageSizeOptionsInput.split(',').map(str => +str);
}
}
getData( event?: PageEvent) {
this.selectedResult = this.results.slice(event.pageIndex * event.pageSize, event.pageIndex * event.pageSize + event.pageSize);
return event;
}
ngOnInit() {
this.adminService.getCandidateResult().subscribe(response => {
this.results = response.resultList;
this.selectedResult = this.results.slice(0, this.pageSize);
this.length = this.results.length;
this.isLoading = false;
});
}
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