node.js - Any way for Mongoose to continue save if validation fails for some changes? -

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in schema i've set minimum length requirements keys. 

mphone: {type: string, minlength: 1}, hphone: {type: string, minlength: 1}, wphone: {type: string, minlength: 1},

the information above populated through form user submits. when user submits form, following runs save information db.

 var query = sample.where({'sample.email' : username});  query.findone(function(err, sample) {     if(err) {         console.error(err);     }     else {         sample.mphone = req.body.mphone;         sample.hphone = req.body.hphone;         sample.wphone = req.body.wphone;          sample.save(function(err) {             if(err) console.error(err);         });     }

however, if user fills out 1 of fields in form , submits (for instance, fill out mphone), because of validation on schema, whole save operation rejected. there setting allow mongoose reject invalid fields , save, say, mphone? guess test , save each 1 individually, i'd know if there more efficient way.

some operations (e.g. create()) skip validation altogether according docs.

that said, if rule @ least 1 of fields filled out, should use validation middleware. (untested):

sampleschema.pre('validate', function(next){    if(!this.mphone && !this.hphone && !this.wphone) return next(new validationerror('at least 1 type of phone needed!'));     next(); });

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