Cast to ObjectId failed for value at path _id for model with getAll during populate - mongodb

Question

I am trying to make a list of permissions for a role,
here's what I am trying to do in my permissions,
const PermissionsSchema = new mongoose.Schema({
name: {
type: String,
index: true,
required: true,
},
createdAt: {
type: Date,
default: Date.now
}
});
PermissionsSchema.statics = {
get(id) {
return this.findById(id)
.exec()
.then((permission) => {
if (permission) {
return permission;
}
const err = new APIError('No such permission exists!', httpStatus.NOT_FOUND);
return Promise.reject(err);
});
},
list({ skip = 0, limit = 50 } = {}) {
return this.find()
.sort({ createdAt: -1 })
.skip(+skip)
.limit(+limit)
.exec();
}
};
module.exports = mongoose.model('Permission', PermissionsSchema);
and this in my roles model.
const RoleSchema = new mongoose.Schema({
name: String,
type: String,
permissions: [{
type: mongoose.Schema.Types.ObjectId,
ref: 'Permission'
}],
createdAt: {
type: Date,
default: Date.now
}
});
RoleSchema.statics = {
get(id) {
// const _id = mongoose.Types.ObjectId.fromString(id);
return this.findById(id)
// .populate('permissions')
.exec()
.then((role) => {
if (role) {
return role;
}
const err = new APIError('No such role exists!', httpStatus.NOT_FOUND);
return Promise.reject(err);
});
},
list({ skip = 0, limit = 50 } = {}) {
return this.find()
.populate('permissions')
.sort({ createdAt: -1 })
.skip(+skip)
.limit(+limit)
.exec();
}
};
module.exports = mongoose.model('Role', RoleSchema);
and when I try to get all, I get this error
Cast to ObjectId failed for value "ADD_USER" at path "_id" for model "Permission"
I've gone through some other posts but they all say I need to pass _id as a string, but I am not querying myself, how would I cast _id?

Answer 1

So I already had some documents in my collection which didn't have any kind of ID in them.