hasProperty()

Signature

hasProperty() — returns boolean

Available in: model Category: Miscellaneous Functions

Description

Checks if a given property exists on a model object. It’s useful for safely validating whether a field is defined before accessing it, especially in dynamic code or when working with user input. This method also provides dynamic helpers (e.g., object.hasEmail()) for convenience.

Parameters

Name	Type	Required	Default	Description
property	string	yes	—	Name of property to inspect.

Examples

1. Basic usage with existing property
employee = model("employee").new();
employee.firstName = "Alice";

writeOutput(employee.hasProperty("firstName")); // true

2. Checking a property that does not exist
employee = model("employee").new();

writeOutput(employee.hasProperty("middleName")); // false

3. Using the dynamic helper
employee = model("employee").new();
employee.email = "alice@example.com";

// Equivalent to hasProperty("email")
if (employee.hasEmail()) {
    writeOutput("Email property exists!");
}

4. Before using a property safely
user = model("user").findByKey(1);

// Avoid runtime errors by checking
if (user.hasProperty("phoneNumber")) {
    writeOutput(user.phoneNumber);
} else {
    writeOutput("No phone number property defined.");
}