I am in search of a method to dynamically chain different populate methods for various paths in a Mongoose document. The goal is to efficiently retrieve all necessary fields at once. Below is the current code snippet:
let fields = [path1, path2, ...]
let result = document.findById(id).populate(path1).populate(path2).populate(...)
Any suggestions on how to achieve this magic trick?
let output = fields.reduce((res, item) => res.populate(item), document.findById(id));
To elaborate:
let output = document.findById(id);
for (let index = 0; index < fields.length; index++) {
output = output.populate(fields[index]);
}
Not completely sure if this is what you're searching for:
let search = document.findId(id)
for (const item of fields) {
search = search.populate(item)
}
const results = await search
If you prefer using ES6 .reduce():
const results = await fields.reduce((search, item) => search.populate(item), document.findId(id))
Edit:
Starting from mongoose v3.6 you can also use .populate(fields.join(' '))
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