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backbone.validation.js
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/
backbone.validation.js
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// Backbone.Validation v0.1.1
//
// Copyright (C)2011 Thomas Pedersen
// Distributed under MIT License
//
// Documentation and full license availabe at:
// http://github.com/thedersen/backbone.validation
// ----------------------------
// Backbone.Validation
// ----------------------------
Backbone.Validation = (function(Backbone, _) {
var patterns = {
number: /^\d$/,
email: /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/,
url: /^(https?|ftp):\/\/(((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:)*@)?(((\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]))|((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?)(:\d*)?)(\/((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)+(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*)?)?(\?((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|[\uE000-\uF8FF]|\/|\?)*)?(\#((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|\/|\?)*)?$/i
};
var builtinValidators = {
required: function(value, attr, msg) {
var isEmptyString = _.isString(value) && $.trim(value) === '';
var isFalseBoolean = _.isBoolean(value) && value === false;
if (_.isNull(value) || _.isUndefined(value) || isEmptyString || isFalseBoolean) {
return msg || attr + ' is required';
}
},
min: function(value, attr, msg, minValue) {
value = parseInt(value, 10);
if(!_.isNumber(value) || value < minValue) {
return msg || attr + ' must be larger than or equal to ' + minValue;
}
},
max: function(value, attr, msg, maxValue) {
value = parseInt(value, 10);
if(!_.isNumber(value) || value > maxValue) {
return msg || attr + ' must be less than or equal to ' + maxValue;
}
},
minLength: function(value, attr, msg, minLength){
value = $.trim(value);
if(_.isString(value) && value.length < minLength){
return msg || attr + ' must be longer than or equal to ' + minLength + ' characters';
}
},
maxLength: function(value, attr, msg, maxLength){
value = $.trim(value);
if(_.isString(value) && value.length > maxLength){
return msg || attr + ' must be shorter than or equal to' + maxLength + ' characters';
}
},
pattern: function(value, attr, msg, pattern){
pattern = patterns[pattern] || pattern;
if (_.isString(value) && !value.match(pattern)) {
return msg || attr + ' is not a valid ' + pattern;
}
}
};
var getValidators = function(view, attr) {
var validation = view.model.validation[attr];
if (_.isFunction(validation)) {
return validation;
} else {
var valdations = [];
for(attr in validation) {
if(attr !== 'msg' && validation.hasOwnProperty(attr)) {
valdations.push({
fn: builtinValidators[attr],
val: validation[attr],
msg: validation['msg']
});
}
}
return valdations;
}
};
var validateAttr = function(view, attr, value){
var validators = getValidators(view, attr);
if(_.isFunction(validators)){
return validators(value);
} else {
var result = '';
for (var i=0; i < validators.length; i++) {
var validator = validators[i];
var res = validator.fn(value, attr, validator.msg, validator.val);
if(res){
result += res;
}
};
return result;
}
};
return {
version: '0.1.1',
valid: function(view, attr) {
view.$('#' + attr).removeClass('invalid');
view.$('#' + attr).removeAttr('data-error');
},
invalid: function(view, attr, error) {
view.$('#' + attr).addClass('invalid');
view.$('#' + attr).attr('data-error', error);
},
addValidator: function(name, fn){
builtinValidators[name] = fn;
},
addPattern: function(name, pattern){
patterns[name] = pattern;
},
bind: function(view, options) {
options = options || {};
var validFn = options.valid || this.valid,
invalidFn = options.invalid || this.invalid,
invalidAttrs = view.model.invalidAttrs = view.model.invalidAttrs || [];
view.model.validate = function(attrs) {
var invalid = false;
for (changedAttr in attrs) {
if(changedAttr === 'isValid'){
return false;
}
var i = _.indexOf(invalidAttrs, changedAttr);
if(i !== -1){
delete invalidAttrs[i];
}
var result = validateAttr(view, changedAttr, attrs[changedAttr]);
if (result) {
invalid = true;
invalidAttrs.push(changedAttr);
invalidFn(view, changedAttr, result);
} else {
validFn(view, changedAttr);
}
}
view.model.set({isValid: _.compact(invalidAttrs).length === 0});
return invalid;
};
},
unbind: function(view){
view.model.validate = undefined;
}
};
} (Backbone, _));