Example 1: sequelize validation empty string
sequelize.define('foo', {
bar: {
type: DataTypes.STRING,
validate: {
is: /^[a-z]+$/i, // matches this RegExp
is: ["^[a-z]+$",'i'], // same as above, but constructing the RegExp from a string
not: /^[a-z]+$/i, // does not match this RegExp
not: ["^[a-z]+$",'i'], // same as above, but constructing the RegExp from a string
isEmail: true, // checks for email format ([email protected])
isUrl: true, // checks for url format (http://foo.com)
isIP: true, // checks for IPv4 (129.89.23.1) or IPv6 format
isIPv4: true, // checks for IPv4 (129.89.23.1)
isIPv6: true, // checks for IPv6 format
isAlpha: true, // will only allow letters
isAlphanumeric: true, // will only allow alphanumeric characters, so "_abc" will fail
isNumeric: true, // will only allow numbers
isInt: true, // checks for valid integers
isFloat: true, // checks for valid floating point numbers
isDecimal: true, // checks for any numbers
isLowercase: true, // checks for lowercase
isUppercase: true, // checks for uppercase
notNull: true, // won't allow null
isNull: true, // only allows null
notEmpty: true, // don't allow empty strings
equals: 'specific value', // only allow a specific value
contains: 'foo', // force specific substrings
notIn: [['foo', 'bar']], // check the value is not one of these
isIn: [['foo', 'bar']], // check the value is one of these
notContains: 'bar', // don't allow specific substrings
len: [2,10], // only allow values with length between 2 and 10
isUUID: 4, // only allow uuids
isDate: true, // only allow date strings
isAfter: "2011-11-05", // only allow date strings after a specific date
isBefore: "2011-11-05", // only allow date strings before a specific date
max: 23, // only allow values <= 23
min: 23, // only allow values >= 23
isCreditCard: true, // check for valid credit card numbers
// Examples of custom validators:
isEven(value) {
if (parseInt(value) % 2 !== 0) {
throw new Error('Only even values are allowed!');
}
}
isGreaterThanOtherField(value) {
if (parseInt(value) <= parseInt(this.otherField)) {
throw new Error('Bar must be greater than otherField.');
}
}
}
}
});
Example 2: Sequelize type email
sequelize.define('foo', {
bar: {
type: DataTypes.STRING,
validate: {
isEmail: true, // checks for email format ([email protected])
// Examples of custom validators:
isEven(value) {
if (parseInt(value) % 2 !== 0) {
throw new Error('Only even values are allowed!');
}
}
isGreaterThanOtherField(value) {
if (parseInt(value) <= parseInt(this.otherField)) {
throw new Error('Bar must be greater than otherField.');
}
}
}
}
});