database _pk is handled as private

[beebase]

I have a naming collision. My database (ArangoDb) only accepts _key as primary key. When I create a record offline I have to add {_key : uuid} in order to sync with the db when coming online again. if _key is missing in the record, the db will create it's own _key.

The problem is that ObjectModel sees _key as private and strips it when the record is sent to the db server. How can I solve this?

[sylvainpolletvillard]

Hi,

You can customize the convention for private keys. For example:

Model.conventionForPrivate = function(key){ return key.startsWith("private_") }

In the next version of ObjectModel, you will be able to set this convention specifically for one model. Currently it applies on all models.

[beebase]

[edit: ah thanks, I just read your comment above.]

I couldn't find an example in the docs but I guess this is the solution

Model.conventionForPrivate = (key) => { 
    return key[0] === '#'  // only props prefixed with '#' are now handled as private
}

[sylvainpolletvillard]

If you don't want private at all, you can also return false

[beebase]

I just upgraded from 2.6.2 to 3.1 and I'm getting private prop errors again 22:67 Uncaught TypeError: cannot modify private _from

In my code i am doing this:

import { Model } from 'objectmodel'
Model.conventionForPrivate = (key) => { return key[0] === '#' }

Are there any breaking changes perhaps?

[beebase]

ah ok.

Model.conventionForPrivate and Model.conventionForConstant have been moved to Model.prototype so that you can change these conventions specifically by model

[sylvainpolletvillard]

yes, just change Model.conventionForPrivate to Model.prototype.conventionForPrivate

[gotjoshua]

I think a small example in the docs to make this explicit could be helpful. I spent a bit more time that I would have liked to find this hint...