// LiveValidation 1.3 (prototype.js version) // Copyright (c) 2007-2008 Alec Hill (www.livevalidation.com) // LiveValidation is licensed under the terms of the MIT License var LiveValidation = Class.create(); /*********************************************** LiveValidation class ***********************************/ /*** static ***/ Object.extend(LiveValidation, { VERSION: '1.3 prototype', /*** element types constants ***/ TEXTAREA: 1, TEXT: 2, PASSWORD: 3, CHECKBOX: 4, SELECT: 5, FILE: 6, /** * pass an array of LiveValidation objects and it will validate all of them * * @var validations {Array} - an array of LiveValidation objects * @return {Bool} - true if all passed validation, false if any fail */ massValidate: function(validations){ var returnValue = true; for(var i = 0, len = validations.length; i < len; ++i ){ var valid = validations[i].validate(); if(returnValue) returnValue = valid; } return returnValue; } }); /*** prototype ***/ LiveValidation.prototype = { validClass: 'LV_valid', invalidClass: 'LV_invalid', messageClass: 'LV_validation_message', validFieldClass: 'LV_valid_field', invalidFieldClass: 'LV_invalid_field', /** * constructor for LiveValidation - validates a form field in real-time based on validations you assign to it * * @var element {mixed} - either a dom element reference or the string id of the element to validate * @var optionsObj {Object} - general options, see below for details * * optionsObj properties: * validMessage {String} - the message to show when the field passes validation * (DEFAULT: "Thankyou!") * onValid {Function} - function to execute when field passes validation * (DEFAULT: function(){ this.insertMessage(this.createMessageSpan()s); this.addFieldClass(); } ) * onInvalid {Function} - function to execute when field fails validation * (DEFAULT: function(){ this.insertMessage(this.createMessageSpan()); this.addFieldClass(); }) * insertAfterWhatNode {mixed} - reference or id of node to have the message inserted after * (DEFAULT: the field that is being validated * onlyOnBlur {Boolean} - whether you want it to validate as you type or only on blur * (DEFAULT: false) * wait {Integer} - the time you want it to pause from the last keystroke before it validates (ms) * (DEFAULT: 0) * onlyOnSubmit {Boolean} - whether should be validated only when the form it belongs to is submitted * (DEFAULT: false) */ initialize: function(element, optionsObj){ // set up special properties (ones that need some extra processing or can be overidden from optionsObj) if(!element) throw new Error("LiveValidation::initialize - No element reference or element id has been provided!"); this.element = $(element); if(!this.element) throw new Error("LiveValidation::initialize - No element with reference or id of '" + element + "' exists!"); // properties that could not be initialised above this.elementType = this.getElementType(); this.validations = []; this.form = this.element.form; // overwrite the options defaults with passed in ones this.options = Object.extend({ validMessage: ' ', onValid: function(){ this.insertMessage(this.createMessageSpan()); this.addFieldClass(); }, onInvalid: function(){ this.insertMessage(this.createMessageSpan()); this.addFieldClass(); }, insertAfterWhatNode: this.element, onlyOnBlur: false, wait: 0, onlyOnSubmit: false }, optionsObj || {}); var node = this.options.insertAfterWhatNode || this.element; this.options.insertAfterWhatNode = $(node); Object.extend(this, this.options); // copy the options to the actual object // add to form if it has been provided if(this.form){ this.formObj = LiveValidationForm.getInstance(this.form); this.formObj.addField(this); } // events // event callbacks are cached so they can be stopped being observed this.boundFocus = this.doOnFocus.bindAsEventListener(this); Event.observe(this.element, 'focus', this.boundFocus); if(!this.onlyOnSubmit){ switch(this.elementType){ case LiveValidation.CHECKBOX: this.boundClick = this.validate.bindAsEventListener(this); Event.observe(this.element, 'click', this.boundClick); // let it run into the next to add a change event too case LiveValidation.SELECT: case LiveValidation.FILE: this.boundChange = this.validate.bindAsEventListener(this); Event.observe(this.element, 'change', this.boundChange); break; default: if(!this.onlyOnBlur){ this.boundKeyup = this.deferValidation.bindAsEventListener(this); Event.observe(this.element, 'keyup', this.boundKeyup); } this.boundBlur = this.validate.bindAsEventListener(this); Event.observe(this.element, 'blur', this.boundBlur); } } }, /** * destroys the instance's events and removes it from any LiveValidationForms */ destroy: function(){ if(this.formObj){ // remove the field from the LiveValidationForm this.formObj.removeField(this); // destroy the LiveValidationForm if no LiveValidation fields left in it this.formObj.destroy(); } // remove events Event.stopObserving(this.element, 'focus', this.boundFocus); if(!this.onlyOnSubmit){ switch(this.elementType){ case LiveValidation.CHECKBOX: Event.stopObserving(this.element, 'click', this.boundClick); // let it run into the next to add a change event too case LiveValidation.SELECT: case LiveValidation.FILE: Event.stopObserving(this.element, 'change', this.boundChange); break; default: if(!this.onlyOnBlur) Event.stopObserving(this.element, 'keyup', this.boundKeyup); Event.stopObserving(this.element, 'blur', this.boundBlur); } } this.validations = []; this.removeMessageAndFieldClass(); }, /** * adds a validation to perform to a LiveValidation object * * @var validationFunction {Function} - validation function to be used (ie Validate.Presence ) * @var validationParamsObj {Object} - parameters for doing the validation, if wanted or necessary * @return {Object} - the LiveValidation object itself so that calls can be chained */ add: function(validationFunction, validationParamsObj){ this.validations.push( { type: validationFunction, params: validationParamsObj || {} } ); return this; }, /** * removes a validation from a LiveValidation object - must have exactly the same arguments as used to add it * * @var validationFunction {Function} - validation function to be used (ie Validate.Presence ) * @var validationParamsObj {Object} - parameters for doing the validation, if wanted or necessary * @return {Object} - the LiveValidation object itself so that calls can be chained */ remove: function(validationFunction, validationParamsObj){ this.validations = this.validations.reject(function(v){ return (v.type == validationFunction && v.params == validationParamsObj); }); return this; }, /** * makes the validation wait the alotted time from the last keystroke */ deferValidation: function(e){ if(this.wait >= 300) this.removeMessageAndFieldClass(); if(this.timeout) clearTimeout(this.timeout); this.timeout = setTimeout(this.validate.bind(this), this.wait); }, /** * sets the focused flag to false when field loses focus */ doOnBlur: function(){ this.focused = false; this.validate(); }, /** * sets the focused flag to true when field gains focus and removes old message and field class */ doOnFocus: function(){ this.focused = true; this.removeMessageAndFieldClass(); }, /** * gets the type of element, to check whether it is compatible * * @var validationFunction {Function} - validation function to be used (ie Validate.Presence ) * @var validationParamsObj {Object} - parameters for doing the validation, if wanted or necessary */ getElementType: function(){ switch(true){ case (this.element.nodeName.toUpperCase() == 'TEXTAREA'): return LiveValidation.TEXTAREA; case (this.element.nodeName.toUpperCase() == 'INPUT' && this.element.type.toUpperCase() == 'TEXT'): return LiveValidation.TEXT; case (this.element.nodeName.toUpperCase() == 'INPUT' && this.element.type.toUpperCase() == 'PASSWORD'): return LiveValidation.PASSWORD; case (this.element.nodeName.toUpperCase() == 'INPUT' && this.element.type.toUpperCase() == 'CHECKBOX'): return LiveValidation.CHECKBOX; case (this.element.nodeName.toUpperCase() == 'INPUT' && this.element.type.toUpperCase() == 'FILE'): return LiveValidation.FILE; case (this.element.nodeName.toUpperCase() == 'SELECT'): return LiveValidation.SELECT; case (this.element.nodeName.toUpperCase() == 'INPUT'): throw new Error('LiveValidation::getElementType - Cannot use LiveValidation on an ' + this.element.type + ' input!'); default: throw new Error('LiveValidation::getElementType - Element must be an input, select, or textarea!'); } }, /** * loops through all the validations added to the LiveValidation object and checks them one by one * * @var validationFunction {Function} - validation function to be used (ie Validate.Presence ) * @var validationParamsObj {Object} - parameters for doing the validation, if wanted or necessary * @return {Boolean} - whether the all the validations passed or if one failed */ doValidations: function(){ this.validationFailed = false; for(var i = 0, len = this.validations.length; i < len; ++i){ var validation = this.validations[i]; switch(validation.type){ case Validate.Presence: case Validate.Confirmation: case Validate.Acceptance: this.displayMessageWhenEmpty = true; this.validationFailed = !this.validateElement(validation.type, validation.params); break; default: this.validationFailed = !this.validateElement(validation.type, validation.params); break; } if(this.validationFailed) return false; } this.message = this.validMessage; return true; }, /** * performs validation on the element and handles any error (validation or otherwise) it throws up * * @var validationFunction {Function} - validation function to be used (ie Validate.Presence ) * @var validationParamsObj {Object} - parameters for doing the validation, if wanted or necessary * @return {Boolean} - whether the validation has passed or failed */ validateElement: function(validationFunction, validationParamsObj){ var value = (this.elementType == LiveValidation.SELECT) ? this.element.options[this.element.selectedIndex].value : this.element.value; if(validationFunction == Validate.Acceptance){ if(this.elementType != LiveValidation.CHECKBOX) throw new Error('LiveValidation::validateElement - Element to validate acceptance must be a checkbox!'); value = this.element.checked; } var isValid = true; try{ validationFunction(value, validationParamsObj); } catch(error) { if(error instanceof Validate.Error){ if( value !== '' || (value === '' && this.displayMessageWhenEmpty) ){ this.validationFailed = true; this.message = error.message; isValid = false; } }else{ throw error; } }finally{ return isValid; } }, /** * makes it do the all the validations and fires off the onValid or onInvalid callbacks * * @return {Boolean} - whether the all the validations passed or if one failed */ validate: function(){ if(!this.element.disabled){ var isValid = this.doValidations(); if(isValid){ this.onValid(); return true; }else { this.onInvalid(); return false; } }else{ return true; } }, /** * enables the field * * @return {LiveValidation} - the LiveValidation object for chaining */ enable: function(){ this.element.disabled = false; return this; }, /** * disables the field and removes any message and styles associated with the field * * @return {LiveValidation} - the LiveValidation object for chaining */ disable: function(){ this.element.disabled = true; this.removeMessageAndFieldClass(); return this; }, /** Message insertion methods **************************** * * These are only used in the onValid and onInvalid callback functions and so if you overide the default callbacks, * you must either impliment your own functions to do whatever you want, or call some of these from them if you * want to keep some of the functionality */ /** * makes a span containg the passed or failed message * * @return {HTMLSpanObject} - a span element with the message in it */ createMessageSpan: function(){ var span = document.createElement('span'); var textNode = document.createTextNode(this.message); span.appendChild(textNode); span.innerHTML += ' '; return span; }, /** * inserts the element containing the message in place of the element that already exists (if it does) * * @var elementToIsert {HTMLElementObject} - an element node to insert */ insertMessage: function(elementToInsert){ this.removeMessage(); var className = this.validationFailed ? this.invalidClass : this.validClass; if( (this.displayMessageWhenEmpty && (this.elementType == LiveValidation.CHECKBOX || this.element.value == '')) || this.element.value != '' ){ $(elementToInsert).addClassName( this.messageClass + (' ' + className) ); if( nxtSibling = this.insertAfterWhatNode.nextSibling){ this.insertAfterWhatNode.parentNode.insertBefore(elementToInsert, nxtSibling); }else{ this.insertAfterWhatNode.parentNode.appendChild(elementToInsert); } } }, /** * changes the class of the field based on whether it is valid or not */ addFieldClass: function(){ this.removeFieldClass(); if(!this.validationFailed){ if(this.displayMessageWhenEmpty || this.element.value != ''){ if(!this.element.hasClassName(this.validFieldClass)) this.element.addClassName(this.validFieldClass); } }else{ if(!this.element.hasClassName(this.invalidFieldClass)) this.element.addClassName(this.invalidFieldClass); } }, /** * removes the message element if it exists */ removeMessage: function(){ if( nxtEl = this.insertAfterWhatNode.next('.' + this.messageClass) ) nxtEl.remove(); }, /** * removes the class that has been applied to the field to indicte if valid or not */ removeFieldClass: function(){ this.element.removeClassName(this.invalidFieldClass); this.element.removeClassName(this.validFieldClass); }, /** * removes the message and the field class */ removeMessageAndFieldClass: function(){ this.removeMessage(); this.removeFieldClass(); } } // end of LiveValidation.prototype object /*************************************** LiveValidationForm class ****************************************/ var LiveValidationForm = Class.create(); /*** static ***/ Object.extend(LiveValidationForm, { /** * namespace to hold instances */ instances: {}, /** * gets the instance of the LiveValidationForm if it has already been made or creates it if it doesnt exist * * @var element {HTMLFormElement} - a dom element reference to a form */ getInstance: function(element){ var rand = Math.random() * Math.random(); if(!element.id) element.id = 'formId_' + rand.toString().replace(/\./, '') + new Date().valueOf(); if(!LiveValidationForm.instances[element.id]) LiveValidationForm.instances[element.id] = new LiveValidationForm(element); return LiveValidationForm.instances[element.id]; } }); /*** prototype ***/ LiveValidationForm.prototype = { /** * constructor for LiveValidationForm - handles validation of LiveValidation fields belonging to this form on its submittal * * @var element {HTMLFormElement} - a dom element reference to the form to turn into a LiveValidationForm */ initialize: function(element){ this.element = $(element); this.fields = []; // need to capture onsubmit in this way rather than Event.observe because Rails helpers add events inline // and must ensure that the validation is run before any previous submit events //(hence not using Event.observe, as inline events appear to be captured before prototype events) this.oldOnSubmit = this.element.onsubmit || function(){}; this.element.onsubmit = function(e){ var ret = (LiveValidation.massValidate(this.fields)) ? this.oldOnSubmit.call(this.element, e) !== false : false; if (!ret) Event.stop(e) }.bindAsEventListener(this); }, /** * adds a LiveValidation field to the forms fields array * * @var lvObj {LiveValidation} - a LiveValidation object */ addField: function(lvObj){ this.fields.push(lvObj); }, /** * removes a LiveValidation field from the forms fields array * * @var victim {LiveValidation} - a LiveValidation object */ removeField: function(victim){ this.fields = this.fields.without(victim); }, /** * destroy this instance and its events * * @var force {Boolean} - whether to force the detruction even if there are fields still associated */ destroy: function(force){ // only destroy if has no fields and not being forced if (this.fields.length != 0 && !force) return false; // remove events this.element.onsubmit = this.oldOnSubmit; // remove from the instances namespace LiveValidationForm.instances[this.element.id] = null; return true; } }// end of LiveValidationForm prototype /*************************************** Validate class ****************************************/ /** * This class contains all the methods needed for doing the actual validation itself * * All methods are static so that they can be used outside the context of a form field * as they could be useful for validating stuff anywhere you want really * * All of them will return true if the validation is successful, but will raise a ValidationError if * they fail, so that this can be caught and the message explaining the error can be accessed ( as just * returning false would leave you a bit in the dark as to why it failed ) * * Can use validation methods alone and wrap in a try..catch statement yourself if you want to access the failure * message and handle the error, or use the Validate::now method if you just want true or false */ var Validate = { /** * validates that the field has been filled in * * @var value {mixed} - value to be checked * @var paramsObj {Object} - parameters for this particular validation, see below for details * * paramsObj properties: * failureMessage {String} - the message to show when the field fails validation * (DEFAULT: "Can't be empty!") */ Presence: function(value, paramsObj){ var params = Object.extend({ failureMessage: "" }, paramsObj || {}); if(value === '' || value === null || value === undefined) Validate.fail(params.failureMessage); return true; }, /** * validates that the value is numeric, does not fall within a given range of numbers * * @var value {mixed} - value to be checked * @var paramsObj {Object} - parameters for this particular validation, see below for details * * paramsObj properties: * notANumberMessage {String} - the message to show when the validation fails when value is not a number * (DEFAULT: "Must be a number!") * notAnIntegerMessage {String} - the message to show when the validation fails when value is not an integer * (DEFAULT: "Must be a number!") * wrongNumberMessage {String} - the message to show when the validation fails when is param is used * (DEFAULT: "Must be {is}!") * tooLowMessage {String} - the message to show when the validation fails when minimum param is used * (DEFAULT: "Must not be less than {minimum}!") * tooHighMessage {String} - the message to show when the validation fails when maximum param is used * (DEFAULT: "Must not be more than {maximum}!") * is {Int} - the value must be equal to this numeric value * minimum {Int} - the minimum numeric allowed * maximum {Int} - the maximum numeric allowed * onlyInteger {Boolean} - if true will only allow integers to be valid * (DEFAULT: false) * * NB. can be checked if it is within a range by specifying both a minimum and a maximum * NB. will evaluate numbers represented in scientific form (ie 2e10) correctly as numbers */ Numericality: function(value, paramsObj){ var suppliedValue = value; var value = Number(value); var paramsObj = paramsObj || {}; var params = { notANumberMessage: paramsObj.notANumberMessage || "", notAnIntegerMessage: paramsObj.notAnIntegerMessage || "", wrongNumberMessage: paramsObj.wrongNumberMessage || "", tooLowMessage: paramsObj.tooLowMessage || "", tooHighMessage: paramsObj.tooHighMessage || "", is: ((paramsObj.is) || (paramsObj.is == 0)) ? paramsObj.is : null, minimum: ((paramsObj.minimum) || (paramsObj.minimum == 0)) ? paramsObj.minimum : null, maximum: ((paramsObj.maximum) || (paramsObj.maximum == 0)) ? paramsObj.maximum : null, onlyInteger: paramsObj.onlyInteger || false }; if (!isFinite(value)) Validate.fail(params.notANumberMessage); if (params.onlyInteger && ( ( /\.0+$|\.$/.test(String(suppliedValue)) ) || ( value != parseInt(value) ) ) ) Validate.fail(params.notAnIntegerMessage); switch(true){ case (params.is !== null): if( value != Number(params.is) ) Validate.fail(params.wrongNumberMessage); break; case (params.minimum !== null && params.maximum !== null): Validate.Numericality(value, {tooLowMessage: params.tooLowMessage, minimum: params.minimum}); Validate.Numericality(value, {tooHighMessage: params.tooHighMessage, maximum: params.maximum}); break; case (params.minimum !== null): if( value < Number(params.minimum) ) Validate.fail(params.tooLowMessage); break; case (params.maximum !== null): if( value > Number(params.maximum) ) Validate.fail(params.tooHighMessage); break; } return true; }, /** * validates against a RegExp pattern * * @var value {mixed} - value to be checked * @var paramsObj {Object} - parameters for this particular validation, see below for details * * paramsObj properties: * failureMessage {String} - the message to show when the field fails validation * (DEFAULT: "Not valid!") * pattern {RegExp} - the regular expression pattern * (DEFAULT: /./) * negate {Boolean} - if set to true, will validate true if the pattern is not matched * (DEFAULT: false) * * NB. will return true for an empty string, to allow for non-required, empty fields to validate. * If you do not want this to be the case then you must either add a LiveValidation.PRESENCE validation * or build it into the regular expression pattern */ Format: function(value, paramsObj){ var value = String(value); var params = Object.extend({ failureMessage: "", pattern: /./ , negate: false }, paramsObj || {}); if(!params.negate && !params.pattern.test(value)) Validate.fail(params.failureMessage); // normal if(params.negate && params.pattern.test(value)) Validate.fail(params.failureMessage); // negated return true; }, /** * validates that the field contains a valid email address * * @var value {mixed} - value to be checked * @var paramsObj {Object} - parameters for this particular validation, see below for details * * paramsObj properties: * failureMessage {String} - the message to show when the field fails validation * (DEFAULT: "Must be a number!" or "Must be an integer!") */ Email: function(value, paramsObj){ var params = Object.extend({ failureMessage: "" }, paramsObj || {}); Validate.Format(value, { failureMessage: params.failureMessage, pattern: /^([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})$/i } ); return true; }, /** * validates the length of the value * * @var value {mixed} - value to be checked * @var paramsObj {Object} - parameters for this particular validation, see below for details * * paramsObj properties: * wrongLengthMessage {String} - the message to show when the fails when is param is used * (DEFAULT: "Must be {is} characters long!") * tooShortMessage {String} - the message to show when the fails when minimum param is used * (DEFAULT: "Must not be less than {minimum} characters long!") * tooLongMessage {String} - the message to show when the fails when maximum param is used * (DEFAULT: "Must not be more than {maximum} characters long!") * is {Int} - the length must be this long * minimum {Int} - the minimum length allowed * maximum {Int} - the maximum length allowed * * NB. can be checked if it is within a range by specifying both a minimum and a maximum */ Length: function(value, paramsObj){ var value = String(value); var paramsObj = paramsObj || {}; var params = { wrongLengthMessage: paramsObj.wrongLengthMessage || "", tooShortMessage: paramsObj.tooShortMessage || "", tooLongMessage: paramsObj.tooLongMessage || "", is: ((paramsObj.is) || (paramsObj.is == 0)) ? paramsObj.is : null, minimum: ((paramsObj.minimum) || (paramsObj.minimum == 0)) ? paramsObj.minimum : null, maximum: ((paramsObj.maximum) || (paramsObj.maximum == 0)) ? paramsObj.maximum : null } switch(true){ case (params.is !== null): if( value.length != Number(params.is) ) Validate.fail(params.wrongLengthMessage); break; case (params.minimum !== null && params.maximum !== null): Validate.Length(value, {tooShortMessage: params.tooShortMessage, minimum: params.minimum}); Validate.Length(value, {tooLongMessage: params.tooLongMessage, maximum: params.maximum}); break; case (params.minimum !== null): if( value.length < Number(params.minimum) ) Validate.fail(params.tooShortMessage); break; case (params.maximum !== null): if( value.length > Number(params.maximum) ) Validate.fail(params.tooLongMessage); break; default: throw new Error("Validate::Length - Length(s) to validate against must be provided!"); } return true; }, /** * validates that the value falls within a given set of values * * @var value {mixed} - value to be checked * @var paramsObj {Object} - parameters for this particular validation, see below for details * * paramsObj properties: * failureMessage {String} - the message to show when the field fails validation * (DEFAULT: "Must be included in the list!") * within {Array} - an array of values that the value should fall in * (DEFAULT: []) * allowNull {Bool} - if true, and a null value is passed in, validates as true * (DEFAULT: false) * partialMatch {Bool} - if true, will not only validate against the whole value to check but also if it is a substring of the value * (DEFAULT: false) * caseSensitive {Bool} - if false will compare strings case insensitively * (DEFAULT: true) * negate {Bool} - if true, will validate that the value is not within the given set of values * (DEFAULT: false) */ Inclusion: function(value, paramsObj){ var params = Object.extend({ failureMessage: "", within: [], allowNull: false, partialMatch: false, caseSensitive: true, negate: false }, paramsObj || {}); if(params.allowNull && value == null) return true; if(!params.allowNull && value == null) Validate.fail(params.failureMessage); //if case insensitive, make all strings in the array lowercase, and the value too if(!params.caseSensitive){ var lowerWithin = []; params.within.each( function(item){ if(typeof item == 'string') item = item.toLowerCase(); lowerWithin.push(item); }); params.within = lowerWithin; if(typeof value == 'string') value = value.toLowerCase(); } var found = (params.within.indexOf(value) == -1) ? false : true; if(params.partialMatch){ found = false; params.within.each( function(arrayVal){ if(value.indexOf(arrayVal) != -1 ) found = true; }); } if( (!params.negate && !found) || (params.negate && found) ) Validate.fail(params.failureMessage); return true; }, /** * validates that the value does not fall within a given set of values (shortcut for using Validate.Inclusion with exclusion: true) * * @var value {mixed} - value to be checked * @var paramsObj {Object} - parameters for this particular validation, see below for details * * paramsObj properties: * failureMessage {String} - the message to show when the field fails validation * (DEFAULT: "Must not be included in the list!") * within {Array} - an array of values that the value should not fall in * (DEFAULT: []) * allowNull {Bool} - if true, and a null value is passed in, validates as true * (DEFAULT: false) * partialMatch {Bool} - if true, will not only validate against the whole value to check but also if it is a substring of the value * (DEFAULT: false) * caseSensitive {Bool} - if false will compare strings case insensitively * (DEFAULT: true) */ Exclusion: function(value, paramsObj){ var params = Object.extend({ failureMessage: "", within: [], allowNull: false, partialMatch: false, caseSensitive: true }, paramsObj || {}); params.negate = true;// set outside of params so cannot be overridden Validate.Inclusion(value, params); return true; }, /** * validates that the value matches that in another field * * @var value {mixed} - value to be checked * @var paramsObj {Object} - parameters for this particular validation, see below for details * * paramsObj properties: * failureMessage {String} - the message to show when the field fails validation * (DEFAULT: "Does not match!") * match {String} - id of the field that this one should match */ Confirmation: function(value, paramsObj){ if(!paramsObj.match) throw new Error("Validate::Confirmation - Error validating confirmation: Id of element to match must be provided!"); var params = Object.extend({ failureMessage: "", match: null }, paramsObj || {}); params.match = $(paramsObj.match); if(!params.match) throw new Error("Validate::Confirmation - There is no reference with name of, or element with id of '" + params.match + "'!"); if(value != params.match.value) Validate.fail(params.failureMessage); return true; }, /** * validates that the value is true (for use primarily in detemining if a checkbox has been checked) * * @var value {mixed} - value to be checked if true or not (usually a boolean from the checked value of a checkbox) * @var paramsObj {Object} - parameters for this particular validation, see below for details * * paramsObj properties: * failureMessage {String} - the message to show when the field fails validation * (DEFAULT: "Must be accepted!") */ Acceptance: function(value, paramsObj){ var params = Object.extend({ failureMessage: "" }, paramsObj || {}); if(!value) Validate.fail(params.failureMessage); return true; }, /** * validates against a custom function that returns true or false (or throws a Validate.Error) when passed the value * * @var value {mixed} - value to be checked * @var paramsObj {Object} - parameters for this particular validation, see below for details * * paramsObj properties: * failureMessage {String} - the message to show when the field fails validation * (DEFAULT: "Not valid!") * against {Function} - a function that will take the value and object of arguments and return true or false * (DEFAULT: function(){ return true; }) * args {Object} - an object of named arguments that will be passed to the custom function so are accessible through this object within it * (DEFAULT: {}) */ Custom: function(value, paramsObj){ var params = Object.extend({ against: function(){ return true; }, args: {}, failureMessage: "" }, paramsObj || {}); if(!params.against(value, params.args)) Validate.fail(params.failureMessage); return true; }, /** * validates whatever it is you pass in, and handles the validation error for you so it gives a nice true or false reply * * @var validationFunction {Function} - validation function to be used (ie Validate.Presence ) * @var value {mixed} - value to be checked * @var validationParamsObj {Object} - parameters for doing the validation, if wanted or necessary */ now: function(validationFunction, value, validationParamsObj){ if(!validationFunction) throw new Error("Validate::now - Validation function must be provided!"); var isValid = true; try{ validationFunction(value, validationParamsObj || {}); } catch(error) { if(error instanceof Validate.Error){ isValid = false; }else{ throw error; } }finally{ return isValid } }, Error: function(errorMessage){ this.message = errorMessage; this.name = 'ValidationError'; }, fail: function(errorMessage){ throw new Validate.Error(errorMessage); } } // end of Validate object