FieldValidator class
A utility class providing common field validators.
The FieldValidator class contains static methods for common validation tasks,
such as checking if a field is required, validating the length of a string,
or ensuring a field is a number or an email address.
Constructors
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Methods
-
checkByRegexp(
RegExp pattern, {bool isRequired = true}) → ValidatorEvent -
Validator to check if a field matches a given regular expression pattern.
The validator checks whether the provided value matches the specified regex pattern.
If the value does not match the pattern, an error message
'error.field.regex'is returned. Parameters: -
contains(
List values, {bool isRequired = true}) → ValidatorEvent -
fieldLength(
{int? max, int? min}) → ValidatorEvent - Validator to check if a field's length falls within a specified range.
-
hasRelation(
{required DBCollectionFree collectionModel, String relationField = '_id', bool isRequired = true}) → ValidatorEvent -
hasSqlRelation(
{required MySQLConnection db, required String table, required String field, QO operator = QO.EQ, Where? where}) → ValidatorEvent -
Validator to check if a field value has a relation in a SQL database table.
The validator checks whether the provided value exists in the specified table and field.
If the value does not exist, an error message
'error.field.relation'is returned. Parameters: -
isColorField(
) → ValidatorEvent -
Validator to check if a field contains a valid color code.
The color code must be a valid hexadecimal color code.
The validator checks whether the provided value is non-null, is a non-empty
string, and matches the format of a color code. If the validation fails,
an error message
'error.field.color'is returned. -
isDateField(
{bool isRequired = true, bool checkUtc = false}) → ValidatorEvent -
isEmailField(
) → ValidatorEvent - Validator to check if a field contains a valid email address.
-
isNumberDoubleField(
{double? max, double? min, bool isRequired = false}) → ValidatorEvent - Validator to check if a field is a valid number within optional bounds.
-
isNumberField(
{int? max, int? min, bool isRequired = false}) → ValidatorEvent - Validator to check if a field is a valid number within optional bounds.
-
isPasswordField(
) → ValidatorEvent -
Validator to check if a field contains a valid password.
The password must be at least 8 characters long and contain at least one uppercase letter, one lowercase letter, one number, and one special character.
The validator checks whether the provided value is non-null, is a non-empty
string, and matches the format of a password. If the validation fails,
an error message
'error.field.password'is returned. -
isSelectField(
List options) → ValidatorEvent -
Validator to check if a field contains a valid select field.
The select field must be a valid value from the list of options.
The validator checks whether the provided value is non-null, is a non-empty
string, and matches the format of a select field. If the validation fails,
an error message
'error.field.select'is returned. -
isUniqueSQLField(
{required MySQLConnection db, required String table, required String field, QO operator = QO.EQ, Where? where}) → ValidatorEvent -
Validator to check if a field value is unique in a SQL database table.
The validator checks whether the provided value already exists in the specified table and field.
If the value exists, an error message
'error.field.unique'is returned. Parameters: -
requiredField(
) → ValidatorEvent - Validator to check if a field is required (non-null and non-empty).
-
requiredFieldMultiLanguage(
) → ValidatorEvent - Validator to check if a field is required in multiple languages.