Iter

iter is a zero-based row counter available inside every generator function. It represents the record index currently being generated for a model.

Model

Create a file named users.dg:

users.dg

model users {
    fields {
        id() int
        name() string
    }

    gens {
        func id() {
            return iter + 1
        }

        func name() {
            return Name()
        }
    }
}

Key Points

• iter starts at 0 and increases by 1 for each record.
• The same iter value is used across all fields of a model for a given record.

How to Run

$ datagenc gen . -n 3

Output

users{id:1 name:Eino Mayert}
users{id:2 name:Savannah Casper}
users{id:3 name:Keven Steuber}

Notice how the id field uses iter + 1 to IDs starting from 1, while name generates random names for each record.