Looking to filter an array, but it requires calling the database which returns a promise. Here's the code:
this.arrayToFilter.filter(myObject => {
this.dataBaseService.getSomething(myObject.id).then(something => {
// performing some calculations
return shouldBeFiltered
})
})
What is the best way to access the value of shouldBeFiltered within the filter callback?
Creating an array of Promises and using Promise.all to handle them before applying a filter:
const promiseArray = await Promise.all(
this.arrayToFilter.map(({ id }) => this.dataBaseService.getData(id)
);
const filteredResults = this.arrayToFilter.filter((object, index) => {
const data = promiseArray[index];
// perform some operations
return shouldInclude;
});
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