How do i return the parent based on the value from child key? - lodash

Question

Im trying to find a way of returning the parent(s) in an array. I have tried pickBy and other solutions on stack but it either return the whole parent array, or nothing.
This is how my array looks like, and i want to find the parents based on tags.
{
'fraga': "Question 1",
'svar' : "This is this explanation",
'tags' : ['knowledge'],
},
{
'fraga': "Question 2",
'svar' : "This is this explanation for question 2",
'tags' : ['knowledge', 'code'],
},
So if i want the parents with tag knowledge i would get both "question 1" and "question 2", but if i want the parent with tags code i would only get "question 2".

Answer 1

I wrote a simple wrapper function in case you are calling it multiple times to search for multiple tags separateliy, but you could easily just use the Lodash code from within the function.
const arr = [
{
'fraga': "Question 1",
'svar' : "This is this explanation",
'tags' : ['knowledge'],
},
{
'fraga': "Question 2",
'svar' : "This is this explanation for question 2",
'tags' : ['knowledge', 'code'],
}
];
console.log(getByTag(arr, 'knowledge'));
console.log(getByTag(arr, 'code'));
function getByTag(objectArray, tagName) {
return _.filter(objectArray, (obj) => _.includes(obj.tags, tagName));
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js"></script>