A required rule verifies that the field specified by the field property has a value that is not a zero-length string.
You cannot use this rule type for file uploading fields. For file uploading fields, use the requiredfile rule type instead.
A requiredfile rule verifies that the field specified by the field property has a file object value.
An email rule verifies that the field specified by the field property is empty or has a valid email address value.
If no format property is specified, a valid email address is an email address that passes the is_email() function’s test.
A url rule verifies that the field specified by the field property is empty or has a valid URL value.
A tel rule verifies that the field specified by the field property is empty or has a telephone number value.
A number rule verifies that the field specified by the field property is empty or has a string value representing a floating-point number.
The definition of a valid floating-point number is according to the HTML5 specification.
A date rule verifies that the field specified by the field property is empty or has a date value in the YYYY-MM-DD format.
A time rule verifies that the field specified by the field property is empty or has a time value in the hh:mm or hh:mm:ss format.
A file rule verifies that the field specified by the field property is empty or has a file object value.
If an accept property is specified, the file type must match one of file types that the property defines.
An enum rule verifies that the field specified by the field property is empty or that it has a value exactly the same as one of the array items specified by the accept property.
A dayofweek rule verifies that the field specified by the field property is empty or has a date value which is on the day of the week specified by the accept property.
The accept property must have an array of integer values representing the day of the week (from 1 through 7, beginning with Monday and ending with Sunday). This weekday numbering is based on ISO 8601.
A minitems rule verifies that the field specified by the field property has values, and the number of values is more than or equal to the number specified by the threshold property.
A maxitems rule verifies that the field specified by the field property has values, and the number of values is less than or equal to the number specified by the threshold property.
A minlength rule verifies that the total number of characters (as UTF-16 code units) in value of the fields specified by the field property is more than or equal to the number specified by the threshold property.
A maxlength rule verifies that the total number of characters (as UTF-16 code units) in value of the fields specified by the field property is less than or equal to the number specified by the threshold property.
A minnumber rule verifies that the numerical value of the field specified by the field property is equal to or greater than the number specified by the threshold property.
A maxnumber rule verifies that the numerical value of the field specified by the field property is equal to or lower than the number specified by the threshold property.
A mindate rule verifies that the date value of the field specified by the field property is not earlier than the date specified by the threshold property.
A maxdate rule verifies that the date value of the field specified by the field property is not later than the date specified by the threshold property.
A minfilesize rule verifies that the size of the file object value of the field specified by the field property is not smaller than the size specified by the threshold property.
A maxfilesize rule verifies that the size of the file object value of the field specified by the field property is not larger than the size specified by the threshold property.
A stepnumber rule verifies that the field specified by the field property is empty or has a numerical value that matches one of the allowed values calculated based on the base and interval properties. Specifically, when the field value is equal to the base value plus an integral multiple of the interval value, the rule is validated.
Both the base and interval properties must have an integer or a floating-point number value. The use of an any keyword, which HTML supports as the step attribute value, is not supported.
An all rule verifies that all of the child rules in the rules property are verified. Child rules are evaluated in order from the top, and if one of the rules fails, the iteration will terminate there.
The failed child rule's error and field properties override the parent's counterparts.
An any rule verifies that any of the child rules in the rules property are verified. Child rules are evaluated in order from the top, and if one of the rules passes, the iteration will terminate there.
This is the meta schema for SWV schemas based on JSON Schema.
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"title": "Contact Form 7 SWV",
"description": "Contact Form 7 SWV meta-schema",
"type": "object",
"properties": {
"version": {
"type": "string"
},
"locale": {
"type": "string"
},
"rules": {
"type": "array",
"items": {
"type": "object",
"properties": {
"rule": {
"type": "string",
"enum": [
"required",
"requiredfile",
"email",
"url",
"tel",
"number",
"date",
"time",
"file",
"enum",
"dayofweek",
"minitems",
"maxitems",
"minlength",
"maxlength",
"minnumber",
"maxnumber",
"mindate",
"maxdate",
"minfilesize",
"maxfilesize",
"stepnumber",
"all",
"any"
]
},
"field": {
"type": "string",
"pattern": "^[A-Za-z][-A-Za-z0-9_:]*$"
},
"error": {
"type": "string"
},
"accept": {
"type": "array",
"items": {
"type": "string"
}
},
"base": {
"type": "string"
},
"interval": {
"type": "number",
"minimum": 0
},
"threshold": {
"type": "string"
}
},
"required": [
"rule"
]
}
}
}
}