API for noir.validation - Noir ()


Usage:
(ns your-namespace
  (:require noir.validation))

Overview

Functions for validating input and setting string errors on fields. 
All fields are simply keys, meaning this can be a general error storage and 
retrieval mechanism for the lifetime of a single request. Errors are not 
persisted and are cleaned out at the end of the request.

Public Variables and Functions



errors?

function
Usage: (errors? & field)
For all fields given return true if any field contains errors. If none of the fields 
contain errors, return false


get-errors

function
Usage: (get-errors field)
Get the errors for the given field. This will return a vector of all error strings or nil.


has-value?

function
Usage: (has-value? v)
Returns true if v is truthy and not an empty string.


has-values?

function
Usage: (has-values? coll)
Returns true if all members of the collection has-value? This works on maps as well.


is-email?

function
Usage: (is-email? v)
Returns true if v is an email address


max-length?

function
Usage: (max-length? v len)
Returns true if v is less than or equal to the given len


min-length?

function
Usage: (min-length? v len)
Returns true if v is greater than or equal to the given len


not-nil?

function
Usage: (not-nil? v)
Returns true if v is not nil


on-error

function
Usage: (on-error field func)
If the given field has an error, execute func and return its value


rule

function
Usage: (rule passed? [field error])
If the passed? condition is not met, add the error text to the given field:
(rule (not-nil? username) [:username "Usernames must have a value."])


set-error

function
Usage: (set-error field error)
Explicitly set an error for the given field. This can be used to 
create complex error cases, such as in a multi-step login process.
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