data lookup

This Meteor smart package provides a reactive lookup of a field in the object. It matches the behavior of the lookup in Spacebars, so {{foo.bar}} resolves the same as DataLookup.get(dataContext, 'foo.bar').

Adding this package to your Meteor application adds DataLookup class into the global scope.

Both client and server side.

Installation

meteor add peerlibrary:data-lookup

API

DataLookup provides the following static methods:

• lookup(obj, path) – resolves the value by traversing the obj object using the path; if path is a string, it is first split on .; if a value is not found, undefined is returned; if any value on path is a function, it is first called
• get(obj, path, equalsFunc) - same as lookup, but if called inside a reactive computation, it uses ComputedField to minimize invalidations so that the reactive computation is invalided only when the value looked up itself changes, and not every time the input object changes; you can use equalsFunc to use a different equality function to determine when the value has changed