我想使用mongoose自定义验证来验证endDate是否大于startDate。如何访问startDate值?使用 this.startDate 时,它不起作用;我得到了不确定。
var a = new Schema({
startDate: Date,
endDate: Date
});
var A = mongoose.model('A', a);
A.schema.path('endDate').validate(function (value) {
return diff(this.startDate, value) >= 0;
}, 'End Date must be greater than Start Date');
diff
是一个比较两个日期的函数。
答案 0 :(得分:75)
您可以使用Mongoose 'validate'
middleware来执行此操作,以便您可以访问所有字段:
ASchema.pre('validate', function(next) {
if (this.startDate > this.endDate) {
next(new Error('End Date must be greater than Start Date'));
} else {
next();
}
});
请注意,在调用Error
报告验证失败时,必须将验证错误消息包装在JavaScript next
对象中。
答案 1 :(得分:28)
原始问题的已接受答案的替代方法是:
var mongoose = require('mongoose'),
Schema = mongoose.Schema;
// schema definition
var ASchema = new Schema({
startDate: {
type: Date,
required: true
},
endDate: {
type: Date,
required: true,
validate: [dateValidator, 'Start Date must be less than End Date']
}
});
// function that validate the startDate and endDate
function dateValidator(value) {
// `this` is the mongoose document
return this.startDate <= value;
}
答案 2 :(得分:25)
您可以尝试在父对象中嵌套日期戳,然后验证父级。例如:
//create a simple object defining your dates
var dateStampSchema = {
startDate: {type:Date},
endDate: {type:Date}
};
//validation function
function checkDates(value) {
return value.endDate < value.startDate;
}
//now pass in the dateStampSchema object as the type for a schema field
var schema = new Schema({
dateInfo: {type:dateStampSchema, validate:checkDates}
});
答案 3 :(得分:18)
我希望通过点击此内容来扩展@JohnnyHK的坚实答案(谢谢)。无效:
Schema.pre('validate', function (next) {
if (this.startDate > this.endDate) {
this.invalidate('startDate', 'Start date must be less than end date.', this.startDate);
}
next();
});
这会将所有验证错误保留在mongoose.Error.ValidationError错误中。有助于保持错误处理程序的标准化。希望这会有所帮助。
答案 4 :(得分:5)
在验证器中使用'this'对我有用 - 在这种情况下,当检查电子邮件地址的唯一性时,我需要访问当前对象的id,以便我可以将其从计数中排除:
var userSchema = new mongoose.Schema({
id: String,
name: { type: String, required: true},
email: {
type: String,
index: {
unique: true, dropDups: true
},
validate: [
{ validator: validator.isEmail, msg: 'invalid email address'},
{ validator: isEmailUnique, msg: 'Email already exists'}
]},
facebookId: String,
googleId: String,
admin: Boolean
});
function isEmailUnique(value, done) {
if (value) {
mongoose.models['users'].count({ _id: {'$ne': this._id }, email: value }, function (err, count) {
if (err) {
return done(err);
}
// If `count` is greater than zero, "invalidate"
done(!count);
});
}
}
答案 5 :(得分:1)
这是我使用的解决方案(感谢@shakinfree的提示):
var mongoose = require('mongoose'),
Schema = mongoose.Schema;
// schema definition
var ASchema = new Schema({
dateSchema : {
type:{
startDate:{type:Date, required: true},
endDate:{type:Date, required: true}
},
required: true,
validate: [dateValidator, 'Start Date must be less than End Date']
}
});
// function that validate the startDate and endDate
function dateValidator (value) {
return value.startDate <= value.endDate;
}
module.exports = mongoose.model('A', ASchema);