Reaching model static methods inside middleware.

[Amir Abu Shareb]

I have a case where each `Customer` `uid, code, companyId` must be unique for each customer,

the only way i can check is via middleware in a pre('save').

But i can't reach the model `.findOne()` or `.count()` or any query methods..

Is there a way to do this ?

[Aaron Heckmann]

this.constructor should work. 

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Aaron

@aaronheckmann

[Andrew Morton]

Any chance of a working example to the original question? I'm trying to trigger statics function inside middleware

PushSchema.statics.doStuff = function(id, cb){

    this.findOne({_id:id}, function(err, push){

        

        // Can't get to this point becauase Pre Fails

    });

}

PushSchema.pre('save', function (next) {

    // this.doStuff(10); // Fails

    // this.statics.doStuff(10); // Fails

    // PushSchema.statics.doStuff(10); // Fails

    // this.doStuff(10); // Fails

    next();

});

[Robert Schütz]

As Aaron pointed out, use 

PushSchema.pre('save', function (next) {

  this.constructor.doStuff(10);
  next();

});

Altenatively, use this ('whatever' should of course be your model name):

PushSchema.pre('save', function (next) {

  mongoose.model('whatever').doStuff(10);
  next();

});