Mongo findAndUpdate for updating multiple documents

Question

I am attempting to use mongo findAndUpdate to update multiple documents and keep receiving syntax error:

db.forecasts.findAndModify({
   query: {forDate: ISODate("2016-02-25T05:00:00.000+0000")},
   update: {
      { $set: {forDate: ISODate("2016-02-23T05:00:00.000+0000")}}, 
      {multi: true}
     }
   })

Alternately I also tried:

db.forecasts.update({
   {'forDate': ISODate("2016-02-25T05:00:00.000+0000")},
   {'forDate': ISODate("2016-02-23T05:00:00.000+0000")}, 
   {multi: true}  
   })

The error I receive is : Error at line 2 position 3: <missing ')'

Answer 1

findAndModify() doesn't allow {multi: true}. You can only update one document and it returns the original doc (default) or uou can ask for thr updated doc.