Filter JSON object - arrays

Question

i would like to ask how i can achieve a result what i want i tried in different ways but i couldn't do, this is the json
[
[
{
"id": "2059623",
"name": "England-Belgium",
"tournament_stageFK": "841049",
"startdate": "2018/06/28 18:00:00",
"status_type": "Not started",
"status_descFK": "1",
"n": "4",
"ut": "2018/06/27 12:31:39",
"tournamentFK": "9731",
"tournament_templateFK": "77",
"sportFK": "1",
"tournament_stage_name": "World Cup Grp. G",
"tournament_name": "2018",
"tournament_template_name": "World Cup",
"sport_name": "Football",
},
{
"id": "2059624",
"name": "Panama-Tunisia",
"tournament_stageFK": "841049",
"startdate": "2018/06/28 18:00:00",
"status_type": "Not started",
"status_descFK": "1",
"n": "7",
"ut": "2018/06/27 12:34:01",
"tournamentFK": "9731",
"tournament_templateFK": "77",
"sportFK": "1",
"tournament_stage_name": "World Cup Grp. G",
"tournament_name": "2018",
"tournament_template_name": "World Cup",
"sport_name": "Football",
},
],
[
{
"id": "2681772",
"name": "Piteaa IF-Vittsjoe GIK",
"tournament_stageFK": "853166",
"startdate": "2018/06/28 17:00:00",
"status_type": "Not started",
"status_descFK": "1",
"n": "1",
"ut": "2017/12/18 15:02:33",
"tournamentFK": "12327",
"tournament_templateFK": "9089",
"sportFK": "1",
"tournament_stage_name": "Damallsvenskan",
"tournament_name": "2018",
"tournament_template_name": "Damallsvenskan",
"sport_name": "Football",
}
],
[
{
"id": "2705231",
"name": "Ifoe Bromoella IF-IFK Haessleholm",
"tournament_stageFK": "853950",
"startdate": "2018/06/28 17:00:00",
"status_type": "Not started",
"status_descFK": "1",
"n": "1",
"ut": "2018/02/12 13:02:19",
"tournamentFK": "12458",
"tournament_templateFK": "170",
"sportFK": "1",
"tournament_stage_name": "2. Division Ostra Gotaland",
"tournament_name": "2018",
"tournament_template_name": "2. Division",
"sport_name": "Football",
}
]
]
if you look closer you will notice that games are grouped by tournamentFK this is good now what i want is to clear a little bit this JSON the result that i want it is like this:
{
"competitionId": "456789",
"competitionName": "World Cup 2018",
"matches":[
{
"matchId":1234,
"teamA":"England",
"teamB":"Poland",
"time":"05:00",
"result":"3-3"
"stadium":"somewhere",
"halfTimeScore":"1-2"
},
{
"matchId":9876,
"teamA":"Spain",
"teamB":"Morocco",
"time":"05:00",
"result":"3-3"
"stadium":"somewhere",
"halfTimeScore":"2-1"
}
]
}
i need to get only one time tournamentFK and tournament_template_name and then to loop inside for each tournament and to make one clearly object.
my code:
fixturesTofilter.forEach((fixture) => {
sameGroup.push(fixture.tournamentFK);
competitionName.push(fixture.tournament_template_name);
});
const groupByTournament = sameGroup.filter((item, pos) => sameGroup.indexOf(item) === pos);
const clearSameCompetition = competitionName.filter((item, pos) => competitionName.indexOf(item) === pos);
// console.log(clearSameCompetition);
groupByTournament.forEach((byTournamentFk, index) => {
const grouped = groupBy(fixturesTofilter, item => item.tournamentFK);
groupedFixtures.push(grouped.get(byTournamentFk));
});
console.log(groupedFixtures);

Answer 1

You can easily flatten this object via lodash. Since the JSON object is flatterned, you can just add the tournamentFK and tournament_template_name. Hope this is what you are looking for.
const _ = require('lodash');
const obj = [
[
{
"id": "2059623",
"name": "England-Belgium",
"tournament_stageFK": "841049",
"startdate": "2018/06/28 18:00:00",
"status_type": "Not started",
"status_descFK": "1",
"n": "4",
"ut": "2018/06/27 12:31:39",
"tournamentFK": "9731",
"tournament_templateFK": "77",
"sportFK": "1",
"tournament_stage_name": "World Cup Grp. G",
"tournament_name": "2018",
"tournament_template_name": "World Cup",
"sport_name": "Football"
},
{
"id": "2059624",
"name": "Panama-Tunisia",
"tournament_stageFK": "841049",
"startdate": "2018/06/28 18:00:00",
"status_type": "Not started",
"status_descFK": "1",
"n": "7",
"ut": "2018/06/27 12:34:01",
"tournamentFK": "9731",
"tournament_templateFK": "77",
"sportFK": "1",
"tournament_stage_name": "World Cup Grp. G",
"tournament_name": "2018",
"tournament_template_name": "World Cup",
"sport_name": "Football"
}
],
[
{
"id": "2681772",
"name": "Piteaa IF-Vittsjoe GIK",
"tournament_stageFK": "853166",
"startdate": "2018/06/28 17:00:00",
"status_type": "Not started",
"status_descFK": "1",
"n": "1",
"ut": "2017/12/18 15:02:33",
"tournamentFK": "12327",
"tournament_templateFK": "9089",
"sportFK": "1",
"tournament_stage_name": "Damallsvenskan",
"tournament_name": "2018",
"tournament_template_name": "Damallsvenskan",
"sport_name": "Football"
}
],
[
{
"id": "2705231",
"name": "Ifoe Bromoella IF-IFK Haessleholm",
"tournament_stageFK": "853950",
"startdate": "2018/06/28 17:00:00",
"status_type": "Not started",
"status_descFK": "1",
"n": "1",
"ut": "2018/02/12 13:02:19",
"tournamentFK": "12458",
"tournament_templateFK": "170",
"sportFK": "1",
"tournament_stage_name": "2. Division Ostra Gotaland",
"tournament_name": "2018",
"tournament_template_name": "2. Division",
"sport_name": "Football"
}
]
]
const formatted = _.flattenDeep(obj)
const res = formatted.map(item => {
const newObj = {
matchId: item.tournamentFK,
teamA: item.name.split("-")[0],
teamB: item.name.split("-")[1],
time: item.startdate,
result:"how ??",
stadium:"somewhere",
halfTimeScore:"How?"
}
return newObj
})
console.log(res)