猫鼬扩展默认验证 [英] Mongoose expand default validation

问题描述

我想在猫鼬模式验证规则中构建"minLength"和"maxLength"，当前解决方案是:

I want to build "minLength" and "maxLength" in the mongoose schema validation rules, the current solution is:

var blogSchema = new Schema({
  title: { required: true, type: String }
});

blogSchema.path('title').validate(function(value) {
  if (value.length < 8 || value.length > 32) return next(new Error('length'));
});

但是我认为应该通过添加如下这样的自定义架构规则来简化此操作:

However I think this should be simplified by just adding custom schema rules like so:

var blogSchema = new Schema({
    title: {
        type: String,
        required: true,
        minLength: 8,
        maxLength: 32
    }
});

我该怎么办，这有可能吗?

How can I do this, is this even possible?

推荐答案

检出库 mongoose-validator .它以与您描述的非常相似的方式集成了node-validator库，以便在猫鼬模式中使用.

Check out the library mongoose-validator. It integrates the node-validator library for use within mongoose schemas in a very similar way to which you have described.

具体来说， node-validator len 或 min 和 max 方法应提供您所需的逻辑.

Specifically, the node-validator len or min and max methods should provide the logic you require.

尝试:

var validate = require('mongoose-validator').validate;

var blogSchema = new Schema({
 title: {
    type: String,
    required: true,
    validate: validate('len', 8, 32)
 }
});

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