node.js - How to query for a specific property of a model of a specific model in mongoose? -

i new in mongoose, have 2 models: 1. user: has many todos in array. 2. todo has 1 field userid.

my problem not know how query specific todo specific user?

this code in graphql resolve:

resolve: async (root, args,context) => {         console.log("newtodoid = ", args.newtodoid);          const todoedgeadded = await usermodel.findone({ _id: context.user._id }).populate('todos').findone({_id: args.newtodoid}) // help?         return {           cursor: cursorforobjectinconnection(gettodos(), todo),           node: todo,         };   }, 

for gettodos(), need return todos. thinking of code:

await usermodel.findone({ _id: context.user._id }).populate('todos') 

as newbie in mongoose, appreciate code relevant question or links.