Built-in Rules Catalog

Ctrovalidate provides a robust suite of validation rules out of the box. Rules are declarative, composable, and highly efficient.

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🏗️ Composition Syntax

Rules are defined in the data-ctrovalidate-rules attribute.

• Use a pipe (|) to separate rules: required|email
• Use a colon (:) for parameters: minLength:8
• Use commas (,) for multiple parameters: between:18,65

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📋 General & Essential Rules

Rule	Description	Usage Example
required	Field cannot be empty. For checkboxes, requires checked.	required
email	Validates standard email formats.	email
minLength	String must be $\ge$ specified length.	minLength:8
maxLength	String must be $\le$ specified length.	maxLength:250
exactLength	String must be exactly $N$ characters.	exactLength:10
sameAs	Must match the value of another field.	sameAs:password

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🔢 Numeric & Counting

Rule	Description	Usage Example
numeric	Allows integers and decimals.	numeric
integer	Allows only whole numbers.	integer
decimal	Requires at least one decimal point.	decimal
min	Number must be $\ge$ target.	min:18
max	Number must be $\le$ target.	max:100
between	Number must be in range min,max.	between:1,10

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🔣 String & Format

Rule	Description	Usage Example
alpha	Only letters (A-Z, a-z).	alpha
alphaNum	Only letters and numbers.	alphaNum
alphaDash	Letters, numbers, -, and _.	alphaDash
url	Standard URL format (requires protocol).	url
phone	General international phone format.	phone
ipAddress	Validates IPv4 format.	ipAddress
json	Validates JSON Object/Array string.	json

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🛡️ Security & Advanced

strongPassword

Ensures a baseline production security level:

• Minimum 8 characters
• At least one uppercase letter
• At least one lowercase letter
• At least one digit

Usage: data-ctrovalidate-rules="required|strongPassword"

creditCard

Validates credit card numbers using the Luhn Algorithm.

NOTE

This checks the format and mathematical validity, not the actual card balance or existence.

Usage: data-ctrovalidate-rules="required|creditCard"

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💡 Pro-Tip: Rule Independence

Ctrovalidate treats rules as independent units. This means you can combine them in any order: required|numeric|min:18 is functionally identical to numeric|min:18|required.

Next Steps

• Conditional Validation — Learn how to apply these rules dynamically.
• Custom Rules — Build your own logic.