- validate_field(+Dict, +Field, -Value, +Options) is det
- True when Value is a valid value for Field from Dict according
to Options. Options is a list of processing steps taken to
convert and validate the value. Defined steps are:
- alnum
- All characters must be alphanumeric
- alnum_and_spaces
- All characters must be alphanumeric or spaces
- atom
- Convert input to an atom
- string
- Convert input to a string
- default(Term)
- Use Term as value if no value appears in the input.
- downcase
- Convert input to lower case
- email
- Input must be a value E-mail address.
- url
- Input must be a valid absolute URL
- url(Scheme)
- Input must be a valid absolute URL of type Scheme. Using
http also allows for https
- float
- Value is converted to a floating point number.
- integer
- Value is converted to an integer.
- length>N
- The value must have at more than N characters
- length>=N
- The value must have at least N characters
- length=<N
- The value must have at most N characters
- length<N
- The value must have at less than N characters
- number
- Value is converted to a number (integer or float)
- oneof(List)
- Input must be a member of List.
- password
- Input must be a reasonable password.
- strip
- Strip leading and trailing white space and normalize
internal white space to a single space.
- term
- Input is parsed as a Prolog term