Validation rules

Here are some list of validations

Rule	Database	Gives error	Use
required	❌ No	If value is null or empty	{ validator: "required", message: "Your message" }
required_if	❌ No	Makes a field required if another field has a value (or matches a specific value)	{validator: "required_if", message: "Your message", options: { other: "field_name", val: "any/ or not needed" }}
email	❌ No	If value is not a valid email	{ validator: "email", message: "Your message" }
url	❌ No	If value has invalid url	{ validator: "url", message: "Your message" }
alpha	❌ No	If value does not have only alphabets	{ validator: "alpha", message: "Your message" }
alphanumeric	❌ No	If value does not have only alphabets and numbers	{ validator: "alphanumeric", message: "Your message" }
no_spaces	❌ No	If value have spaces	{ validator: "no_spaces", message: "Your message" }
no_special_chars	❌ No	If value have special characters	{ validator: "no_special_chars", message: "Your message" }
equal	❌ No	If value is not equals to given string (allow)	{ validator: "equal", message: "Your message", options: { allow: "Some Text" } }
not_equal	❌ No	If value is equals to given string (disallow)	{ validator: "not_equal", message: "Your message", options: { disallow: "Some Text" } }
uuid	❌ No	If value is not a valid uuid type. Types : v1/v2/v3/v4/v5/v6/v7/v8/any	{ validator: "uuid", message: "Your message", options: { type: "any" } }
slug	❌ No	If value is not a valid slug	{ validator: "slug", message: "Your message" }
regex	❌ No	If value does not matches the pattern	{ validator: "regex", message: "Your message", options: { pattern: "Pattern", flags: "Give the flag of pattern" } }
contain	❌ No	If an element doesnot contain in value	{ validator: "contain", message: "Your message", options: { element: "Some text or array" } }
not_contain	❌ No	If an element contain in value	{ validator: "not_contain", message: "Your message", options: { element: "Some text or array" } }
string_case	❌ No	If value does not matches the case provided. Cases: lower/upper/title	{ validator: "string_case", message: "Your message", options: { case_type: "lower" }}
string_length	❌ No	If length of value does not matches length (at_least(min), at_most(max), equal(exact)	{ validator: "string_length", message: "Your message", options: { length: 3, length_type:"min" } }
starts_with	❌ No	If value does not starts with the given prefix	{ validator: "starts_with", message: "Your message", options: { prefix: "Some Text" } }
ends_with	❌ No	If value does not ends with the given suffix	{ validator: "ends_with", message: "Your message", options: { suffix: "Some Text" } }
ascii	❌ No	If value is not a valid ascii	{ validator: "ascii", message: "Your message" }
json	❌ No	If value is not a valid json	{ validator: "json", message: "Your message" }
array	❌ No	If value is not a valid array	{ validator: "array", message: "Your message" }
gt	❌ No	If value is less than or equals to provided 'val'	{ validator: "gt", message: "Your message", options: { val: 3 } }
gte	❌ No	If value is less than provided 'val'	{ validator: "gte", message: "Your message", options: { val: 3 } }
lt	❌ No	If value is greater than or equals to provided 'val'	{ validator: "lt", message: "Your message", options: { val: 3 } }
lte	❌ No	If value is greater than provided 'val'	{ validator: "lte", message: "Your message", options: { val: 3 } }
number_between	❌ No	If value is not in between 'min' and 'max'	{ validator: "number_between", message: "Your message", options: { min: 5, max: 9 } }
integer	❌ No	If value is not a valid integer	{ validator: "integer", message: "Your message" }
positive	❌ No	If value is not positive	{ validator: "positive", message: "Your message" }
negative	❌ No	If value is not negative	{ validator: "negative", message: "Your message" }
float	❌ No	If value is not float/double	{ validator: "float", message: "Your message" }
numeric	❌ No	If value is not numeric	{ validator: "numeric", message: "Your message" }
even	❌ No	If value is not even	{ validator: "even", message: "Your message" }
odd	❌ No	If value is not odd	{ validator: "odd", message: "Your message" }
boolean	❌ No	If value is not a valid boolean	{ validator: "boolean", message: "Your message" }
is_true	❌ No	If value is not true	{ validator: "is_true", message: "Your message" }
is_false	❌ No	If value is not false	{ validator: "is_false", message: "Your message" }
file_required	❌ No	If file is null or empty	{ validator: "file_required", message: "Your message" }
file_mime	❌ No	If file is not matching the mime type	{ validator: "file_mime", message: "Your message", options: { types: ["image/jpeg","image/png",...] } }
file_storage_size	❌ No	If file storage size not matching (at_least(min), at_most(max), equal(exact)	{ validator: "file_storage_size", message: "Your message", options: { size_bytes: 100000, size_type:"max/min/exact" } }
file_extension	❌ No	If file extension is not matching	{ validator: "file_extension", message: "Your message", options: { extension: [".jpg",".png"] } }
image_dimensions	❌ No	If image dimensions is not matching (height and width)	{ validator: "image_dimensions", message: "Your message", options: { width: 200, height: 100, width_type:"max/min/exact", height_type:"max/min/exact" } }
exists	✅ Yes	If value does not exist in database	{ validator: "exists", message: "Your message", options: { collection: "users", field: "email", exclude: { field: "id", value: 1 } } } ['exclude' is optional, used mainly in update]
unique	✅ Yes	If value is not unique in database	{ validator: "unique", message: "Your message", options: { collection: "users", field: "email", exclude: { field: "id", value: 1 } } } ['exclude' is optional, used mainly in update]