I have a list with both numbers and strings in there.
Each element of the list looks something like:
{
'name': 'Bob',
'number': 234234
}
But, either name or number may be missing.
In my sortBy I did something like this:
_.sortBy(list, function(element) {
if (element.name) {
return element.name;
}
else {
return element.number;
}
});
This sorts the elements with numbers in front of the elements without it. How do I get lodash to deprioritize numbers?
I guess what you mean is simply that _.sortBy ranks in ascending order?
sortBy_.sortBy(list, iteratee, [context]) Returns a (stably) sorted copy of list, ranked in ascending order by the results of running each value through iteratee. iteratee may also be the string name of the property to sort by (eg. length).
http://underscorejs.org/#sortBy
Therefore, as you are prioritizing element.name, it appears last on the sort.
You can simply reverse the resulting array
results = results.reverse();
Or, change the order of your if/else statement.
_.sortBy is using the return value to create an object with a criteria property. That criteria property is the value to compare with the array.sort function and an ad hoc, not configurable comparer function.
I guess you can hack this, returning a value like:
_.sortBy(list, function(element) {
if (element.name) {
return "@" + element.name;
}
else {
return element.number;
}
};
It sounds like it might be easier to split the list, sort the parts and put it back together, i.e.:
_(data) //begin chain
.filter("name") //the entries with names
.sortBy("name") //sorted by name
.concat(_.sortBy(_.reject(data, "name"), "number")) //followed by the entries without name, sorted by number
.value(); //end chain
