Salesforce Apex 自定义排序类(一)

使用【lightning-datatable】表示ListView数据时，当表示Opportunity表中Amount项目，需要排序功能时，可以直接在SOQL中使用ORDER BY进行排序，也可以在自定义Apex中实现。

1.自定义排序类

SortableOpportunityWrapper

代码语言：javascript复制

public class SortableOpportunityWrapper implements Comparable {
    public Opportunity opp;
    public SortableOpportunityWrapper(Opportunity t) {
        opp = t;
    }
    public Integer compareTo(Object compareTo) {
        SortableOpportunityWrapper compareToOpportunity = (SortableOpportunityWrapper) compareTo;
        Integer returnValue = 0;

        if (opp.Amount < compareToOpportunity.opp.Amount) {
            returnValue = -1;
        }
        if (opp.Amount > compareToOpportunity.opp.Amount) {
            returnValue = 1;
        }
        return returnValue;
    }
}

2.调用排序类进行排序

OpportunityListViewController.cls

代码语言：javascript复制

public with sharing class OpportunityListViewController {
    @AuraEnabled(cacheable=true)
    public static List<OpportunityWrapper> getOpportunityListView(){
        List<OpportunityWrapper> inputWappers = new List<OpportunityWrapper>();

        List<Opportunity> resultList = [SELECT Id,
                                            Name,
                                            StageName,
                                            Amount,
                                            CloseDate,
                                            RecordTypeId
                                            FROM Opportunity
                                            ORDER BY LastModifiedDate DESC
                                            LIMIT 10
                                            ];

        List<SortableOpportunityWrapper> oppSortList = new List<SortableOpportunityWrapper>();
        for (Opportunity t : resultList) {
            oppSortList.add(new SortableOpportunityWrapper(t));
        }
        oppSortList.sort();
        for (SortableOpportunityWrapper opSort : oppSortList) {
            OpportunityWrapper wapper = new OpportunityWrapper();
            wapper.id = opSort.opp.Id;
            wapper.idLink = '/opportunity/'  opSort.opp.Id;
            wapper.name = opSort.opp.Name;
            wapper.stageName = opSort.opp.StageName;
            wapper.amount = String.valueOf(opSort.opp.Amount);
            wapper.closeDate = opSort.opp.CloseDate;
            inputWappers.add(wapper);
        }

        return inputWappers;
    }
    public class OpportunityWrapper {
        @AuraEnabled
        public String id;
        @AuraEnabled
        public String idLink;
        @AuraEnabled
        public String name;
        @AuraEnabled
        public String stageName;
        @AuraEnabled
        public String amount;
        @AuraEnabled
        public Date closeDate;
    }
}

opportunityListView.html

代码语言：javascript复制

<template>
    <div class="slds-card__body">
        <lightning-datatable
            key-field="id"
            data={records}
            show-row-number-column
            row-number-offset={rowOffset}
            hide-checkbox-column
            columns={columns}
            >
        </lightning-datatable>
        <template if:false={loaded}>
            <lightning-spinner alternative-text="Loading"></lightning-spinner>
        </template>
    </div>
</template>

opportunityListView.js

代码语言：javascript复制

import { LightningElement, track, wire } from 'lwc';
import getOpportunityListView from '@salesforce/apex/OpportunityListViewController.getOpportunityListView';

const columns = [
    { label: '案件名', fieldName: 'idLink', type: 'url', sortable: true, typeAttributes: { label: { fieldName: 'name' }, target: '_self' }, initialWidth: 300 },
    { label: 'フェーズ', fieldName: 'stageName', type: 'text', editable: true },
    { label: '保険料', fieldName: 'amount', type: 'currency' },
    { label: '完了予定日', fieldName: 'closeDate', type: 'date' },
    ];

export default class OpportunityListView extends LightningElement {

    @track columns = columns;
    @track records;
    @track prospectRecords;

    @track wiredRecordList;
    @track error;
    @track rowOffset = 0;
    @track loaded = false;

    @wire(getOpportunityListView)
    recordList(result) {
        this.wiredRecordList = result;
        if (result.data) {
            this.records = result.data;
            this.error = undefined;
            this.loaded = true;
        } else if (result.error) {
            this.error = result.error;
            this.records = [];
        }
    }
}

unity listview android

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