Add default value for a Typescript value

[ahmed-bhs]

Is there a way to add a default value for my typescript model.

information: { /

substances: Array<{ // Paire codes index, ec et cas des substances.
 index: string // code ec. pattern: ^\d{3}-\d{3}-\d{2}-\d{1}$
 ec: string  // code ec. pattern: ^\d{3}-\d{3}-\d$
 cas: string  // code cas. pattern: ^\d{1,5}-\d{2}-\d$
}> 

}

This is my schema:

  Object(
                id="substances",
                description="Paire codes index, ec et cas des substances.",
                attributes=[
                    Text(id="index", description="code ec. pattern: ^\d{3}-\d{3}-\d{2}-\d{1}$"),
                    Text(id="ec", description="code ec. pattern: ^\d{3}-\d{3}-\d$"),
                    Text(id="cas", description="code cas. pattern: ^\d{1,5}-\d{2}-\d$"),
                ],
                default=[],
                many=True
                ),

Expected:

information: { /

 substances: Array<{ // Paire codes index, ec et cas des substances.
  index: string = 'NA' // code ec. pattern: ^\d{3}-\d{3}-\d{2}-\d{1}$
  ec: string = 'NA' // code ec. pattern: ^\d{3}-\d{3}-\d$
  cas: string = 'NA' // code cas. pattern: ^\d{1,5}-\d{2}-\d$
 }> = []

}

Cheers!

[eyurtsev]

No, there isn't, but I also think it'll hurt performance.

The way to achieve the desired behavior is to use Optional in pydantic with a None as the default value. Handle the rest on the python side. a None literal is better to use software side than NA, code can always render it into NA if needed downstream, but keep as None for as long as possible since it's distinct from a string type.