[英]Lodash - Move object to first place in array than sort by another property
我有一组对象员工
{
"emp1": {
"BusinessPartnerFormattedName": "Aleksandra Lewandowski",
"EmpRoleCode": "BUP003",
"EmpRoleType": "Employee",
"EmployeeID": "E8000",
"isAssigned" : true,
"ObjectID": "00163E0E46241ED7A0EA0590D0655967"
},
"emp2": {
"BusinessPartnerFormattedName": "Aleksandra Lewandowski",
"EmpRoleCode": "BUP003",
"EmpRoleType": "Employee",
"EmployeeID": "E8000",
"isAssigned" : true,
"ObjectID": "00163E0E46241ED7A0EA0590D0655967"
},
"emp3": {
"BusinessPartnerFormattedName": "Aleksandra Lewandowski",
"EmpRoleCode": "BUP003",
"EmpRoleType": "Employee",
"EmployeeID": "E8000",
"isAssigned" : false,
"ObjectID": "00163E0E46241ED7A0EA0590D0655967"
},
"emp4": {
"BusinessPartnerFormattedName": " Lewandowski",
"EmpRoleCode": "BUP803",
"EmpRoleType": "Employee",
"EmployeeID": "BUP803",
"isAssigned" : false,
"ObjectID": "00163E0E46241ED7A0EA0590D0655967"
},
"emp5": {
"BusinessPartnerFormattedName": "Aleksandra",
"EmpRoleCode": "BUP043",
"EmpRoleType": "Employee",
"EmployeeID": "BUP043",
"isAssigned" : false,
"ObjectID": "00163E0E46241ED7A0EA0590D0655967"
},
"emp6": {
"BusinessPartnerFormattedName": "Eva Log",
"EmpRoleCode": "BUP0d03",
"EmpRoleType": "Employee",
"EmployeeID": "BUP0d03",
"isAssigned" : false,
"ObjectID": "00163E0E46241ED7A0EA0590D0655967"
}
}
我想将EmployeeID
等于E8000
的员工放在列表中的第一位,而不是我希望isAssigned
等于true
的员工跟随
到目前为止,我已经做到了:
var sortedItems = _.sortBy(items, function(item) {
return (item.isAssigned === true || item.EmployeeID === "E8000") ? 0 : 1;
});
但是如何确保EmployeeID
等于E8000
的 emp 将始终在最前面?
不知道为什么你需要 lodash:
items.sort((a,b)=>{
if(a.EmployeeID !== b.EmployeeID){
if(a.EmployeeID === 'E8000') return -1;
if(b.EmployeeID === 'E8000') return 1;
};
if(a.isAssigned !== b.isAssigned){
return a.isAssigned ? -1 : 1;
}
//Remaining sort logic...
})
这转化为:
“在决定a
还是b
应该放在第一位时,如果a
和b
的 EmployeeID 值不同,请检查其中一个是否具有E8000
值。如果以太确实具有该值,则将其放在第一位。
否则,检查a
和b
是否具有相同的isAssigned
值,如果它们不相同,则首先将具有true
的值作为isAssigned
值。
最后,如果不满足先验条件,请按照您想要的任何逻辑进行设置。
当然,您必须填写您想要的任何排序逻辑。 例如,如果您想按字母顺序对BusinessPartnerFormattedName
进行排序,您可以使用以下内容填充Remaining sort logic...
块:
if(a.BusinessPartnerFormattedName < b.BusinessPartnerFormattedName) return -1;
if(a.BusinessPartnerFormattedName > b.BusinessPartnerFormattedName) return 1;
return 0;
您链接所需的排序顺序。
var array = [ { name: "E8000 true", EmployeeID: "E8000", isAssigned : true }, { name: "E8000 true", EmployeeID: "E8000", isAssigned : true }, { name: "E8003 false", EmployeeID: "E8003", isAssigned : false }, { name: "E8001 true", EmployeeID: "E8001", isAssigned : true }, { name: "E8002 true", EmployeeID: "E8002", isAssigned : true }, { name: "E8001 false", EmployeeID: "E8001", isAssigned : false } ]; array.sort((a, b) => (b.EmployeeID === 'E8000') - (a.EmployeeID === 'E8000') || b.isAssigned - a.isAssigned ); console.log(array);
.as-console-wrapper { max-height: 100% !important; top: 0; }
用 lodash
var array = [ { name: "E8000 true", EmployeeID: "E8000", isAssigned : true }, { name: "E8000 true", EmployeeID: "E8000", isAssigned : true }, { name: "E8003 false", EmployeeID: "E8003", isAssigned : false }, { name: "E8001 true", EmployeeID: "E8001", isAssigned : true }, { name: "E8002 true", EmployeeID: "E8002", isAssigned : true }, { name: "E8001 false", EmployeeID: "E8001", isAssigned : false } ]; console.log(_.sortBy(array, [ o => o.EmployeeID !== 'E8000', o => !o.isAssigned ]));
.as-console-wrapper { max-height: 100% !important; top: 0; }
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js"></script>
您提供的数据具有很强的误导性,但是我仍然想发布我的解决方案,因为基本上我只是喜欢它。
const items = [{BusinessPartnerFormattedName:"Aleksandra Lewandowski",EmpRoleCode:"BUP003",EmpRoleType:"Employee",EmployeeID:"E7000",isAssigned:!0,ObjectID:"00163E0E46241ED7A0EA0590D0655967"},{BusinessPartnerFormattedName:"Aleksandra Lewandowski",EmpRoleCode:"BUP003",EmpRoleType:"Employee",EmployeeID:"E6000",isAssigned:!1,ObjectID:"00163E0E46241ED7A0EA0590D0655967"},{BusinessPartnerFormattedName:"Aleksandra Lewandowski",EmpRoleCode:"BUP003",EmpRoleType:"Employee",EmployeeID:"E8000",isAssigned:!1,ObjectID:"00163E0E46241ED7A0EA0590D0655967"}]; const helper = (emp) => emp.EmployeeID === 'E8000' ? 2 : +(!!emp.isAssigned); const r = items.sort((a, b) => helper(b) - helper(a)); console.log(r);
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