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number.js
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number.js
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/*!
* Module requirements.
*/
var SchemaType = require('../schematype')
, CastError = SchemaType.CastError
, errorMessages = require('../error').messages
, utils = require('../utils')
, Document
/**
* Number SchemaType constructor.
*
* @param {String} key
* @param {Object} options
* @inherits SchemaType
* @api private
*/
function SchemaNumber (key, options) {
SchemaType.call(this, key, options, 'Number');
};
/*!
* Inherits from SchemaType.
*/
SchemaNumber.prototype.__proto__ = SchemaType.prototype;
/**
* Required validator for number
*
* @api private
*/
SchemaNumber.prototype.checkRequired = function checkRequired (value, doc) {
if (SchemaType._isRef(this, value, doc, true)) {
return null != value;
} else {
return typeof value == 'number' || value instanceof Number;
}
};
/**
* Sets a minimum number validator.
*
* ####Example:
*
* var s = new Schema({ n: { type: Number, min: 10 })
* var M = db.model('M', s)
* var m = new M({ n: 9 })
* m.save(function (err) {
* console.error(err) // validator error
* m.n = 10;
* m.save() // success
* })
*
* // custom error messages
* // We can also use the special {MIN} token which will be replaced with the invalid value
* var min = [10, 'The value of path `{PATH}` ({VALUE}) is beneath the limit ({MIN}).'];
* var schema = new Schema({ n: { type: Number, min: min })
* var M = mongoose.model('Measurement', schema);
* var s= new M({ n: 4 });
* s.validate(function (err) {
* console.log(String(err)) // ValidationError: The value of path `n` (4) is beneath the limit (10).
* })
*
* @param {Number} value minimum number
* @param {String} [message] optional custom error message
* @return {SchemaType} this
* @see Customized Error Messages #error_messages_MongooseError-messages
* @api public
*/
SchemaNumber.prototype.min = function (value, message) {
if (this.minValidator) {
this.validators = this.validators.filter(function (v) {
return v[0] != this.minValidator;
}, this);
}
if (null != value) {
var msg = message || errorMessages.Number.min;
msg = msg.replace(/{MIN}/, value);
this.validators.push([this.minValidator = function (v) {
return v === null || v >= value;
}, msg, 'min']);
}
return this;
};
/**
* Sets a maximum number validator.
*
* ####Example:
*
* var s = new Schema({ n: { type: Number, max: 10 })
* var M = db.model('M', s)
* var m = new M({ n: 11 })
* m.save(function (err) {
* console.error(err) // validator error
* m.n = 10;
* m.save() // success
* })
*
* // custom error messages
* // We can also use the special {MAX} token which will be replaced with the invalid value
* var max = [10, 'The value of path `{PATH}` ({VALUE}) exceeds the limit ({MAX}).'];
* var schema = new Schema({ n: { type: Number, max: max })
* var M = mongoose.model('Measurement', schema);
* var s= new M({ n: 4 });
* s.validate(function (err) {
* console.log(String(err)) // ValidationError: The value of path `n` (4) exceeds the limit (10).
* })
*
* @param {Number} maximum number
* @param {String} [message] optional custom error message
* @return {SchemaType} this
* @see Customized Error Messages #error_messages_MongooseError-messages
* @api public
*/
SchemaNumber.prototype.max = function (value, message) {
if (this.maxValidator) {
this.validators = this.validators.filter(function(v){
return v[0] != this.maxValidator;
}, this);
}
if (null != value) {
var msg = message || errorMessages.Number.max;
msg = msg.replace(/{MAX}/, value);
this.validators.push([this.maxValidator = function(v){
return v === null || v <= value;
}, msg, 'max']);
}
return this;
};
/**
* Casts to number
*
* @param {Object} value value to cast
* @param {Document} doc document that triggers the casting
* @param {Boolean} init
* @api private
*/
SchemaNumber.prototype.cast = function (value, doc, init) {
if (SchemaType._isRef(this, value, doc, init)) {
// wait! we may need to cast this to a document
if (null == value) {
return value;
}
// lazy load
Document || (Document = require('./../document'));
if (value instanceof Document) {
value.$__.wasPopulated = true;
return value;
}
// setting a populated path
if ('number' == typeof value) {
return value;
} else if (Buffer.isBuffer(value) || !utils.isObject(value)) {
throw new CastError('number', value, this.path);
}
// Handle the case where user directly sets a populated
// path to a plain object; cast to the Model used in
// the population query.
var path = doc.$__fullPath(this.path);
var owner = doc.ownerDocument ? doc.ownerDocument() : doc;
var pop = owner.populated(path, true);
var ret = new pop.options.model(value);
ret.$__.wasPopulated = true;
return ret;
}
var val = value && value._id
? value._id // documents
: value;
if (!isNaN(val)){
if (null === val) return val;
if ('' === val) return null;
if ('string' == typeof val) val = Number(val);
if (val instanceof Number) return val
if ('number' == typeof val) return val;
if (val.toString && !Array.isArray(val) &&
val.toString() == Number(val)) {
return new Number(val)
}
}
throw new CastError('number', value, this.path);
};
/*!
* ignore
*/
function handleSingle (val) {
return this.cast(val)
}
function handleArray (val) {
var self = this;
return val.map(function (m) {
return self.cast(m)
});
}
SchemaNumber.prototype.$conditionalHandlers =
utils.options(SchemaType.prototype.$conditionalHandlers, {
'$all': handleArray,
'$gt' : handleSingle,
'$gte': handleSingle,
'$in' : handleArray,
'$lt' : handleSingle,
'$lte': handleSingle,
'$ne' : handleSingle,
'$mod': handleArray,
'$nin': handleArray
});
/**
* Casts contents for queries.
*
* @param {String} $conditional
* @param {any} [value]
* @api private
*/
SchemaNumber.prototype.castForQuery = function ($conditional, val) {
var handler;
if (arguments.length === 2) {
handler = this.$conditionalHandlers[$conditional];
if (!handler)
throw new Error("Can't use " + $conditional + " with Number.");
return handler.call(this, val);
} else {
val = this.cast($conditional);
return val == null ? val : val
}
};
/*!
* Module exports.
*/
module.exports = SchemaNumber;