Built-in Rules Catalog

Ctrovalidate provides 21 built-in validation rules out of the box. Rules are declarative, composable, and can be combined in any order.

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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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🔣 Format & Pattern Rules

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 and IPv6 formats.	ipAddress
json	Validates JSON Object/Array string.	json
creditCard	Validates credit card using Luhn Algorithm.	creditCard

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💡 Rule Composition

Rules are independent and can be combined in any order:

• required|numeric|min:18 is identical to numeric|min:18|required
• All rules are executed in the order they appear
• Validation stops at the first failing rule

Total: 21 Built-in Rules

• Common Rules (6): required, email, minLength, maxLength, exactLength, sameAs
• Numeric Rules (6): numeric, integer, decimal, min, max, between
• Format Rules (9): alpha, alphaNum, alphaDash, url, phone, ipAddress, json, creditCard

Next Steps

• Conditional Validation — Apply rules dynamically based on other fields
• Custom Rules — Create your own validation logic
• API Reference — Explore all 9 public methods