Think of a static
like an "override" of an "existing" method. So pretty much directly from searchable documentation:
AnimalSchema.statics.search = function search (name, cb) {
return this.where('name', new RegExp(name, 'i')).exec(cb);
}
Animal.search('Rover', function (err) {
if (err) ...
})
And this basically puts a different signature on a "global" method, but is only applied when called for this particular model.
Hope that clears things up a bit more.