I have a object
course = [
{
id: 1,
name: 'Computer Science',
country: 'Uinited State',
university:{
id: 1,
name: 'Oxford'
}
},
{
id: 2,
name: 'BBA',
country: 'Uinited State',
university:{
id: 2,
name: 'Starnford'
}
},
{
id: 3,
name: 'BBA',
country: 'Uinited State',
university:{
id: 1,
name: 'Oxford'
}
},
{
id: 4,
name: 'Computer Engineering',
country: 'Uinited State',
university:{
id: 1,
name: 'Oxford'
}
},
{
id: 5,
name: 'MBA',
country: 'Uinited State',
university:{
id: 2,
name: 'Starnford'
}
},
{
id: 6,
name: 'ETE',
country: 'Uinited State',
university:{
id: 1,
name: 'Oxford'
}
}
]
I need to filter this object. I need to filter by university and the filter university can not be 3 length. format like below.
filterData = [
{
uniVersityId: 1,
data: [
{
id: 1,
name: 'Computer Science',
country: 'Uinited State',
university:{
id: 1,
name: 'Oxford'
},
},
{
id: 3,
name: 'BBA',
country: 'Uinited State',
university:{
id: 1,
name: 'Oxford'
}
},
{
id: 4,
name: 'Computer Engineering',
country: 'Uinited State',
university:{
id: 1,
name: 'Oxford'
}
},
],
},
{
uniVersityId: 2,
data: [{
id: 2,
name: 'BBA',
country: 'Uinited State',
university:{
id: 2,
name: 'Starnford'
}
},
{
id: 5,
name: 'MBA',
country: 'Uinited State',
university:{
id: 1,
name: 'Starnford'
}
},
],
}
I have started
course.map(course=>{
if( !mainData.length ){
mainData.country.name.push(course)
}
})
Need to filter the array by university. university will be a array and the university array length can not be 3. if there have more than 3 data ignore.
Its not so much a filter you need, its really grouping by university name, and ensuring there is a maximum of 3 items in each group
const course=[{id:1,name:"Computer Science",country:"Uinited State",university:{id:1,name:"Oxford"}},{id:2,name:"BBA",country:"Uinited State",university:{id:2,name:"Starnford"}},{id:3,name:"BBA",country:"Uinited State",university:{id:1,name:"Oxford"}},{id:4,name:"Computer Engineering",country:"Uinited State",university:{id:1,name:"Oxford"}},{id:5,name:"MBA",country:"Uinited State",university:{id:2,name:"Starnford"}},{id:6,name:"ETE",country:"Uinited State",university:{id:1,name:"Oxford"}}];
const result = Object.entries(course.reduce( (acc,i) => {
acc[i.university.id] = acc[i.university.id] || [];
if(acc[i.university.id].length < 3){
acc[i.university.id].push(i);
}
return acc;
},{})).map ( ([universityId,data]) => ({universityId, data}))
console.log(result);var val = 'Oxford';
var temp= this.temp.filter((d) => {
return d.university.name.toLowerCase().indexOf(val) !== -1 || !val
});