Potential enhancement

[alexpchin]

Create an option to make the field uneditable? At the moment, you'd have to write custom logic to prevent people from sending the incremented field along with a request?

[nodkz]

Will be good improvement 👍

What name should have this option?
Do you have an example of custom logic which prevents changing?

[alexpchin]

We should probably add a readonly: true option? I thought about just adding:

testSchema.path('count').set(function(value) {
    return this.count ? this.count : value;
});

However, this will prevent any editing at all. We could do something like:

counterSchema.path('count').set(function(value) {
    if (value - this.count !== settings.incrementBy) {
      return this.count ? this.count : value;
    } 
    return value;
});

Thoughts?

[nodkz]

It will not work with outputFilter option. So need to find other solution.

Somewhere here https://github.com/nodkz/mongoose-plugin-autoinc/blob/master/src/index.js#L315 we should add check on doc.isModified('counter') and then use doc.$ignore('counter') if readonly: true.

[sp3c1]

To tell the truth its bit too much. no DB protectes you from updating the index that you autoincrement - ever. ^^

So I would vote on dropping this one