lodash filter array of objects by array Angular 5

Question

Say I have an object like so...

and I have an array with ids like this..

array = ['21d32fwef23fw32f3', '21we3weasdf23rfwfwf3']

how can I return only the objects that have sys.ids that match the ids in the array

Ive tried using lodash like so..

getWeekItems(weekNumber) {
  this.contenfulService.getWeekItems(weekNumber)
    .then((weekOverview) => {
       this.weekOverviewCompleted = _.filter(weekOverview, this.completedIds);
       console.log(this.weekOverviewCompleted);
      }).then(() => console.log(this.weekOverview));
  }

but Im getting an empty array back??

is there a better way to do this??

Vivek Doshi · Accepted Answer · 2018-03-28 04:54:57Z

2

This is how you can get the filtered result :

_.filter(weekOverview, (item) => {
  return this.completedIds.indexOf(item.sys.id) > -1 ;
});

// OR Simple javascript filter function

weekOverview.filter(item => {
  return this.completedIds.indexOf(item.sys.id) > -1 ;    
})

edited Mar 28, 2018 at 4:54

answered Mar 28, 2018 at 4:51

Vivek Doshi

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1 Comment

Smokey Dawson Over a year ago

Hey thanks! Do you know how I could do the opposite? so only return the items that don't match those ids??

user1920925 · Accepted Answer · 2021-08-29 07:43:55Z

0

JS function 'filter' does not work on mobile devices. Use the same function defined in Lodash library.

answered Aug 29, 2021 at 7:43

user1920925

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