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408 lines
13 KiB
408 lines
13 KiB
/* ******************************
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Form Validation Components
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Author: Jack Lukic
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Notes: First Commit April 08, 2012
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Refactored Feb 22, 2012
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Allows you to validate forms based on a form validation object
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Form validation objects are bound by either data-validate="" metadata, or form id or name tags
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****************************** */
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;(function ( $, window, document, undefined ) {
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$.fn.validateForm = function(fields, parameters) {
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var
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$allModules = $(this),
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settings = $.extend(true, {}, $.fn.validateForm.settings, parameters),
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// make arguments available
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query = arguments[0],
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passedArguments = [].slice.call(arguments, 1),
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invokedResponse
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;
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$allModules
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.each(function() {
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var
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$module = $(this),
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$group = $(this).find(settings.selector.group),
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$field = $(this).find(settings.selector.field),
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$errorPrompt = $(this).find(settings.selector.prompt),
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formErrors = [],
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selector = $module.selector || '',
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element = this,
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instance = $module.data('module-' + settings.namespace),
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methodInvoked = (typeof query == 'string'),
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namespace = settings.namespace,
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metadata = settings.metadata,
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className = settings.className,
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errors = settings.errors,
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module
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;
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module = {
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initialize: function() {
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module.verbose('Initializing form validation');
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if(fields !== undefined || !$.isEmptyObject(fields) ) {
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// add default text if set
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if($.fn.defaultText !== undefined) {
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$.each(fields, function(fieldName, field) {
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module.field.add.defaultText(field);
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});
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}
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// attach event handler
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$module
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.on('submit.' + namespace, module.validate.form)
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;
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}
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else {
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module.error(errors.noFields, $module);
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}
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},
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destroy: function() {
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$module
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.off(namespace)
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;
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},
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field: {
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find: function(identifier) {
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var
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$field = $module.find(settings.selector.field)
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;
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if( $field.filter('#' + identifier).size() > 0 ) {
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return $field.filter('#' + identifier);
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}
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else if( $field.filter('[name="' + identifier +'"]').size() > 0 ) {
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return $field.filter('[name="' + identifier +'"]');
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}
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else if( $field.filter('[data-' + metadata.validate + '="'+ identifier +'"]').size() > 0 ) {
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return $field.filter('[data-' + metadata.validate + '="'+ identifier +'"]');
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}
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return $('<input/>');
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},
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add: {
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defaultText: function(field) {
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var
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$field = module.field.find(field.identifier)
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;
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if(field.defaultText !== undefined) {
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$field.defaultText(field.defaultText);
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}
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},
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error: function(field, errors) {
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var
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$field = module.field.find(field.identifier),
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$errorGroup = $field.closest($group),
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$errorPrompt = $group.find($errorPrompt),
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promptExists = ($errorPrompt.size() !== 0)
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;
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$errorGroup
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.addClass(className.error)
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;
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if(settings.inlineError) {
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// create message container on first invalid validation attempt
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if(!promptExists) {
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$errorPrompt = $('<div />')
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.addClass(className.prompt)
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.insertBefore($field)
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;
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}
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// add prompt message
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$errorPrompt
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.html(errors[0])
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.fadeIn(settings.animateSpeed)
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;
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}
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}
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},
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remove: {
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error: function(field) {
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var
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$field = module.field.find(field.identifier),
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$errorGroup = $field.closest($group),
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$errorPrompt = $group.find($errorPrompt)
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;
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$errorGroup
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.removeClass(className.error)
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;
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if(settings.inlineError) {
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$errorPrompt.hide();
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}
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}
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}
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},
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validate: {
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form: function(event) {
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var
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allValid = true
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;
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// reset errors
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formErrors = [];
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$.each(fields, function(fieldName, field){
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// form is invalid after first bad field, but keep checking
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if( !( module.validate.field(field) ) ) {
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allValid = false;
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}
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});
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// Evaluate form callbacks
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return (allValid)
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? $.proxy(settings.onSuccess, this)(event)
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: $.proxy(settings.onFailure, this)(formErrors)
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;
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},
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// takes a validation object and returns whether field passes validation
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field: function(field) {
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var
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$field = module.field.find(field.identifier),
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fieldValid = true,
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fieldErrors = []
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;
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if(field.rules !== undefined) {
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// iterate over all validation types for a certain field
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$.each(field.rules, function(index, rule) {
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if( !( module.validate.rule(field, rule) ) ) {
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module.debug('Field is invalid', field.identifier, rule.type);
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fieldErrors.push(rule.prompt);
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fieldValid = false;
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}
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});
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}
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if(fieldValid) {
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module.field.remove.error(field, fieldErrors);
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settings.onValid($field);
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}
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else {
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formErrors = formErrors.concat(fieldErrors);
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module.field.add.error(field, fieldErrors);
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$.proxy(settings.onInvalid, $field)(fieldErrors);
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return false;
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}
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return true;
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},
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// takes validation rule and returns whether field passes rule
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rule: function(field, validation) {
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var
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$field = module.field.find(field.identifier),
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type = validation.type,
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defaultText = (field.defaultText !== undefined)
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? field.defaultText
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: false,
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value = ($field.val() == defaultText)
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? ''
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: $field.val(),
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bracketRegExp = /\[(.*?)\]/i,
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bracket = bracketRegExp.exec(type),
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isValid = true,
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ancillary,
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functionType
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;
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// if bracket notation is used, pass in extra parameters
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if(bracket !== undefined && bracket != null) {
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ancillary = bracket[1];
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functionType = type.replace(bracket[0], '');
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isValid = $.proxy(settings.rules[functionType], $module)(value, ancillary);
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}
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// normal notation
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else {
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isValid = (type == 'checked')
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? $field.filter(':checked').size() > 0
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: settings.rules[type](value)
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;
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}
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return isValid;
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}
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},
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/* standard module */
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setting: function(name, value) {
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if(value === undefined) {
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return settings[name];
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}
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settings[name] = value;
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},
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verbose: function() {
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if(settings.verbose) {
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module.debug.apply(this, arguments);
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}
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},
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debug: function() {
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var
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output = [],
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message = settings.moduleName + ': ' + arguments[0],
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variables = [].slice.call( arguments, 1 ),
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log = console.info || console.log || function(){}
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;
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log = Function.prototype.bind.call(log, console);
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if(settings.debug) {
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output.push(message);
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log.apply(console, output.concat(variables) );
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}
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},
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error: function() {
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var
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output = [],
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errorMessage = settings.moduleName + ': ' + arguments[0],
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variables = [].slice.call( arguments, 1 ),
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log = console.warn || console.log || function(){}
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;
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log = Function.prototype.bind.call(log, console);
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if(settings.debug) {
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output.push(errorMessage);
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output.concat(variables);
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log.apply(console, output.concat(variables) );
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}
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},
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invoke: function(query, context, passedArguments) {
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var
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maxDepth,
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found
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;
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passedArguments = passedArguments || [].slice.call( arguments, 2 );
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if(typeof query == 'string' && instance !== undefined) {
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query = query.split('.');
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maxDepth = query.length - 1;
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$.each(query, function(depth, value) {
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if( $.isPlainObject( instance[value] ) && (depth != maxDepth) ) {
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instance = instance[value];
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return true;
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}
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else if( instance[value] !== undefined ) {
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found = instance[value];
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return true;
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}
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module.error(errors.method);
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return false;
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});
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}
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if ( $.isFunction( found ) ) {
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return found.apply(context, passedArguments);
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}
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// return retrieved variable or chain
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return found;
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}
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};
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// check for invoking internal method
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if(methodInvoked) {
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invokedResponse = module.invoke(query, this, passedArguments);
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}
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// otherwise initialize
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else {
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module.initialize();
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}
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})
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;
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// chain or return queried method
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return (invokedResponse !== undefined)
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? invokedResponse
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: this
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;
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};
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$.fn.validateForm.settings = {
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// module info
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moduleName : 'Validate Form Module',
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debug : true,
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verbose : false,
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namespace : 'validate',
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animateSpeed : 150,
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inlineError : false,
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onValid : function() {},
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onInvalid : function() {},
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onSuccess : function() { return true; },
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onFailure : function() { return false; },
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metadata : {
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validate: 'validate'
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},
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// errors
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errors: {
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method : 'The method you called is not defined.',
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noFields : 'No validation object specified.'
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},
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selector : {
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group : '.field',
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prompt : '.prompt',
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field : 'input, textarea, select'
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},
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className : {
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error : 'error',
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prompt : 'prompt'
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},
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rules: {
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empty: function(value) {
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return !(value === undefined || '' === value);
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},
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email: function(value){
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var
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emailRegExp = new RegExp("[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?")
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;
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return emailRegExp.test(value);
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},
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length: function(value, requiredLength) {
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return (value !== undefined)
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? (value.length >= requiredLength)
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: false
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;
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},
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not: function(value, notValue) {
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return (value != notValue);
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},
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maxLength: function(value, maxLength) {
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return (value !== undefined)
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? (value.length <= maxLength)
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: false
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;
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},
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match: function(value, matchingField) {
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// use either id or name of field
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var
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$form = $(this),
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matchingValue
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;
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if($form.find('#' + matchingField).size() > 0) {
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matchingValue = $form.find('#' + matchingField).val();
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}
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else if($form.find('[name=' + matchingField +']').size() > 0) {
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matchingValue = $form.find('[name=' + matchingField + ']').val();
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}
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else if( $form.find('[data-validate="'+ matchingField +'"]').size() > 0 ) {
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matchingValue = $form.find('[data-validate="'+ matchingField +'"]').val();
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}
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return (matchingValue !== undefined)
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? ( value.toString() == matchingValue.toString() )
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: false
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;
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},
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url: function(value) {
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var
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urlRegExp = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/
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;
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return urlRegExp.test(value);
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}
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}
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};
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})( jQuery, window , document );
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