All predicatesShow sourceform.pl -- Form handling utilities

This module simplifies handling input from forms in the SWISH interface. The values from a form can be turned into an object using notebook.formData(form). The returned dict may be passed to a predicate inside SWISH.

Source validate_form(+Dict, +Fields) is det
Run validate_field/4 on all specified fields, combining the error message. Fields is a list of terms of the form
field(Name, Value, Options)
Source 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
Source validate_step(+Step, +Value0, -Value) is semidet[private]
Source is_url(?Scheme, +URL) is semidet[private]
True if URL looks like a URL that satisfies Scheme.
Source string_value(+String, +Value) is semidet[private]
True if String can be considered the stringified version of Value.

Undocumented predicates

The following predicates are exported, but not or incorrectly documented.

Source input_error(Arg1, Arg2)