Custom Field Validation Using VTAP APIs

Validation is a cornerstone of maintaining data integrity within applications. It ensures that only accurate, meaningful, and properly formatted data is entered into systems, reducing errors and enhancing overall reliability. In today’s fast-paced digital environment, robust validation mechanisms are essential for delivering seamless user experiences and ensuring compliance with business rules.

VTAP offers two powerful API methods for developers seeking to implement custom field validations efficiently:

1) VTAP.Field.RegisterValidator – This method validates a specific field by its name.

  • Example: Use RegisterValidator when you need custom validation for individual fields.

2) VTAP.Field.RegisterValidatorForType – This method validates all fields of a particular type.

  • Example: Use RegisterValidatorForType when you want consistent validation across multiple fields of the same type.

Use Case: Employee Onboarding Form

Consider an employee onboarding form that includes the following validation requirements:

  • EmployeeID must be a 6-digit number.
  • Email fields (PersonalEmail, WorkEmail) should belong to the organization's domain (example.com).

By using RegisterValidator for EmployeeID and RegisterValidatorForType for email fields, we can ensure accurate data input across the form without redundant validation logic.

How do the APIs Work?

1) Field-Specific Validation (RegisterValidator)

This approach is used when validation logic is required for a particular field. It allows developers to enforce custom rules on a specific input field without affecting others.

Example:

Suppose we have a form with an ‘EmployeeID’ field that must be exactly 6 digits. We can register a validator as follows:

 

  
VTAP.Field.RegisterValidator(employee_id', 'Employees', (value) => {
    if (!/^\d{6}$/.test(value)) {
        return "Employee ID must be exactly 6 digits.";
    }
});




  
VTAP.Field.RegisterValidator(employee_id', 'Employees', (value) => {
    if (!/^\d{6}$/.test(value)) {
        return "Employee ID must be exactly 6 digits.";
    }
});
 

This ensures that only valid Employee IDs are accepted.

2) Field Type-Based Validation (RegisterValidatorForType)

When multiple fields of the same type require similar validation rules, this method is more efficient. It applies validation to all fields of the specified type.

Example:

We can use the following validation if a form has multiple email fields (e.g., ‘PersonalEmail’ and ‘WorkEmail’), and we want to enforce a rule that email addresses must belong to a specific domain (example.com):
 

This ensures that only valid Employee IDs are accepted.

2) Field Type-Based Validation (RegisterValidatorForType)

When multiple fields of the same type require similar validation rules, this method is more efficient. It applies validation to all fields of the specified type.

Example:

We can use the following validation if a form has multiple email fields (e.g., ‘PersonalEmail’ and ‘WorkEmail’), and we want to enforce a rule that email addresses must belong to a specific domain (example.com):

 

  
VTAP.Field.RegisterValidatorForType('email', 'Contacts', (value) => {
    if (!value.endsWith(‘@example.com’)) {
        return "Email must be from the 'example.com' domain.";
    }
});




  
VTAP.Field.RegisterValidatorForType('email', 'Contacts', (value) => {
    if (!value.endsWith(‘@example.com’)) {
        return "Email must be from the 'example.com' domain.";
    }
});
 

This ensures all email fields conform to the rule without having to define separate validators for each.

By leveraging these VTAP API methods, developers can ensure structured, reusable, and efficient field validation in their applications.

Key Benefits

  • Granular Control: Validate specific fields when needed.
  • Reusability: Apply rules to multiple fields of the same type.
  • Improved Data Integrity: Ensures consistent and accurate data entry.

VTAP APIs are designed to simplify the process of validating data inputs, enabling businesses to enforce specific rules and standards without extensive custom coding. 

We believe these examples will improve your experience with VTAP. We want to ensure that developers and CRM users can mutually share information and knowledge to further the functionality of the CRM. 

Stay tuned for more. Happy Coding!
 

This ensures all email fields conform to the rule without having to define separate validators for each.

By leveraging these VTAP API methods, developers can ensure structured, reusable, and efficient field validation in their applications.

Key Benefits

  • Granular Control: Validate specific fields when needed.
  • Reusability: Apply rules to multiple fields of the same type.
  • Improved Data Integrity: Ensures consistent and accurate data entry.

VTAP APIs are designed to simplify the process of validating data inputs, enabling businesses to enforce specific rules and standards without extensive custom coding. 

We believe these examples will improve your experience with VTAP. We want to ensure that developers and CRM users can mutually share information and knowledge to further the functionality of the CRM. 

Stay tuned for more. Happy Coding!
 
 

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