Ref

Manifest path: $.models[*].attributes[*].value

Dore allows you to define values of an attribute as being dependent on values on other attributes.

Often times, we would want the value of an attribute to be based on the value of an attribute of a different model. A typical scenario where we might want do this is while generating data in a relational database with Foreign Key dependencies.

Before Dore starts generating records for any model, it analyzes the attribute and model dependencies and creates an iteration order over the models based on topological sorting of their dependencies. By doing this, Dore ensures that records for a model which has other models dependent on it are generated before generating records for the dependent models.

Example

You can consider the E-Commerce schema to understand this better.

Ecommerce schema

In order to generate data for this schema with Dore, we can specify the value config for customer_id in the Ecommerce.Order model as a ref value and provide a reference to the dependent attribute and model, which is the customer_id attribute of the Ecommerce.Customer model like so:

{
  "value": {
    "ref": "Customer.customer_id"
  }
}

Fields

• ref (string) [required]

  Manifest path: $.models[*].attributes[*].value.ref

  A string of the form: modelId.attributeId which specifies the model and attribute ID on which the current attribute's value is dependent / derived from.