Package web2py :: Package gluon :: Module validators

Module validators

This file is part of the web2py Web Framework Copyrighted by Massimo Di Pierro <mdipierro@cs.depaul.edu> License: LGPLv3 (http://www.gnu.org/licenses/lgpl.html)

Thanks to ga2arch for help with IS_IN_DB and IS_NOT_IN_DB on GAE

Classes

[hide private]

Validator
Root for all validators, mainly for documentation purposes.

IS_MATCH
example:

IS_EQUAL_TO
example:

IS_EXPR
example:

IS_LENGTH
Checks if length of field's value fits between given boundaries.

IS_IN_SET
example:

IS_IN_DB
example:

IS_NOT_IN_DB
example:

IS_INT_IN_RANGE
Determine that the argument is (or can be represented as) an int, and that it falls within the specified range.

IS_FLOAT_IN_RANGE
Determine that the argument is (or can be represented as) a float, and that it falls within the specified inclusive range.

IS_DECIMAL_IN_RANGE
Determine that the argument is (or can be represented as) a Python Decimal, and that it falls within the specified inclusive range.

IS_NOT_EMPTY
example:

IS_ALPHANUMERIC
example:

IS_EMAIL
Checks if field's value is a valid email address.

IS_GENERIC_URL
Rejects a URL string if any of the following is true: * The string is empty or None * The string uses characters that are not allowed in a URL * The URL scheme specified (if one is specified) is not valid Based on RFC 2396: http://www.faqs.org/rfcs/rfc2396.html This function only checks the URL's syntax.

IS_HTTP_URL
Rejects a URL string if any of the following is true: * The string is empty or None * The string uses characters that are not allowed in a URL * The string breaks any of the HTTP syntactic rules * The URL scheme specified (if one is specified) is not 'http' or 'https' * The top-level domain (if a host name is specified) does not exist Based on RFC 2616: http://www.faqs.org/rfcs/rfc2616.html This function only checks the URL's syntax.

IS_URL
Rejects a URL string if any of the following is true: * The string is empty or None * The string uses characters that are not allowed in a URL * The string breaks any of the HTTP syntactic rules * The URL scheme specified (if one is specified) is not 'http' or 'https' * The top-level domain (if a host name is specified) does not exist (These rules are based on RFC 2616: http://www.faqs.org/rfcs/rfc2616.html) This function only checks the URL's syntax.

IS_TIME
example:

IS_DATE
example:

IS_DATETIME
example:

IS_DATE_IN_RANGE
example:

IS_DATETIME_IN_RANGE
example:

IS_LIST_OF

IS_LOWER
convert to lower case

IS_UPPER
convert to upper case

IS_SLUG
convert arbitrary text string to a slug

IS_EMPTY_OR
dummy class for testing IS_EMPTY_OR

IS_NULL_OR
dummy class for testing IS_EMPTY_OR

CLEANUP
example:

CRYPT
example:

IS_STRONG
example:

IS_IN_SUBSET

IS_IMAGE
Checks if file uploaded through file input was saved in one of selected image formats and has dimensions (width and height) within given boundaries.

IS_UPLOAD_FILENAME
Checks if name and extension of file uploaded through file input matches given criteria.

IS_IPV4
Checks if field's value is an IP version 4 address in decimal form.

Functions

[hide private]

translate(text)

source code

options_sorter(x, y)

source code

is_empty(value, empty_regex=1)
test empty field

source code

escape_unicode(string)
Converts a unicode string into US-ASCII, using a simple conversion scheme.

source code

unicode_to_ascii_authority(authority)
Follows the steps in RFC 3490, Section 4 to convert a unicode authority string into its ASCII equivalent.

source code

unicode_to_ascii_url(url, prepend_scheme)
Converts the inputed unicode url into a US-ASCII equivalent.

source code

Variables

[hide private]

regex1 = re.compile(r'[\w_]+\.[\w_]+')

regex2 = re.compile(r'%\((?P<name>[^\)]+)\)s')

official_url_schemes = ['aaa', 'aaas', 'acap', 'cap', 'cid', '...

unofficial_url_schemes = ['about', 'adiumxtra', 'aim', 'afp', ...

all_url_schemes = [None, 'aaa', 'aaas', 'acap', 'cap', 'cid', ...

http_schemes = [None, 'http', 'https']

url_split_regex = re.compile(r'^(([^:/\?#]+):)?(//([^/\?#]*))?...

label_split_regex = re.compile(r'[\.\u3002\uff0e\uff61]')

official_top_level_domains = ['ac', 'ad', 'ae', 'aero', 'af', ...

regex_time = re.compile(r'((?P<h>[0-9]+))([^0-9 ]+(?P<m>[0-9 ]...

Function Details

[hide private]

escape_unicode(string)

source code


Converts a unicode string into US-ASCII, using a simple conversion scheme.
Each unicode character that does not have a US-ASCII equivalent is
converted into a URL escaped form based on its hexadecimal value.
For example, the unicode character '\u4e86' will become the string '%4e%86'

:param string: unicode string, the unicode string to convert into an
    escaped US-ASCII form
:returns: the US-ASCII escaped form of the inputted string
:rtype: string

@author: Jonathan Benn

unicode_to_ascii_authority(authority)

source code


Follows the steps in RFC 3490, Section 4 to convert a unicode authority
string into its ASCII equivalent.
For example, u'www.Alliancefrançaise.nu' will be converted into
'www.xn--alliancefranaise-npb.nu'

:param authority: unicode string, the URL authority component to convert,
                  e.g. u'www.Alliancefrançaise.nu'
:returns: the US-ASCII character equivalent to the inputed authority,
         e.g. 'www.xn--alliancefranaise-npb.nu'
:rtype: string
:raises Exception: if the function is not able to convert the inputed
    authority

@author: Jonathan Benn

unicode_to_ascii_url(url, prepend_scheme)

source code


Converts the inputed unicode url into a US-ASCII equivalent. This function
goes a little beyond RFC 3490, which is limited in scope to the domain name
(authority) only. Here, the functionality is expanded to what was observed
on Wikipedia on 2009-Jan-22:

   Component    Can Use Unicode?
   ---------    ----------------
   scheme       No
   authority    Yes
   path         Yes
   query        Yes
   fragment     No

The authority component gets converted to punycode, but occurrences of
unicode in other components get converted into a pair of URI escapes (we
assume 4-byte unicode). E.g. the unicode character U+4E2D will be
converted into '%4E%2D'. Testing with Firefox v3.0.5 has shown that it can
understand this kind of URI encoding.

:param url: unicode string, the URL to convert from unicode into US-ASCII
:param prepend_scheme: string, a protocol scheme to prepend to the URL if
    we're having trouble parsing it.
    e.g. "http". Input None to disable this functionality
:returns: a US-ASCII equivalent of the inputed url
:rtype: string

@author: Jonathan Benn

Variables Details

[hide private]

official_url_schemes

Value:

['aaa',
 'aaas',
 'acap',
 'cap',
 'cid',
 'crid',
 'data',
 'dav',
...

unofficial_url_schemes

Value:

['about',
 'adiumxtra',
 'aim',
 'afp',
 'aw',
 'callto',
 'chrome',
 'cvs',
...

all_url_schemes

Value:

[None,
 'aaa',
 'aaas',
 'acap',
 'cap',
 'cid',
 'crid',
 'data',
...

url_split_regex

Value:

re.compile(r'^(([^:/\?#]+):)?(//([^/\?#]*))?([^\?#]*)(\?([^#]*))?(#(.*
))?')

official_top_level_domains

Value:

['ac',
 'ad',
 'ae',
 'aero',
 'af',
 'ag',
 'ai',
 'al',
...

regex_time

Value:

re.compile(r'((?P<h>[0-9]+))([^0-9 ]+(?P<m>[0-9 ]+))?([^0-9ap ]+(?P<s>
[0-9]*))?((?P<d>[ap]m))?')