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我想保存数据库上的点击坐标,但如果x和y是相同的,我不想保存它们。即使我使用复合索引并通过书籍完成任何事情,它仍能保存所有内容。在stackoverflow上有类似的问题,但它不适用于我的代码。即使使用复合索引,为什么重复也会保存? Mongo(Mongoose)
模型架构:
var mongoose = require('mongoose');
var uniqueValidator = require('mongoose-unique-validator');
require('mongoose-double')(mongoose);
var Schema = mongoose.Schema;
var integerValidator = require('mongoose-integer');
var SchemaTypes = mongoose.Schema.Types;
var clickPoint = new Schema({
clicks: [
{
x: {
type: SchemaTypes.Double
},
y: {
type: SchemaTypes.Double
},
value: {
type: Number,
integer: true
}
}
]
});
clickPoint.index({x: 1, y: 1}, {unique: true});
clickPoint.plugin(integerValidator);
clickPoint.plugin(uniqueValidator);
//export model...
module.exports = mongoose.model("ClickPoint", clickPoint);
型号控制器:
var ClickPoint = require('../Models/point');
exports.addPoint = function (click) {
ClickPoint.findOne(function (err, data) {
if(!err) {
if(data) {
data.clicks.push({
x: click.x,
y: click.y,
value: click.value
});
data.save();
}
else {
var entry = new ClickPoint({
x: click.x,
y: click.y,
value: click.value
});
entry.save();
}
}
})
};
难道说所有的记录都存储在一个数组,据我所知,索引允许存储复本中阵列?如果这是问题,而不是如何保持对象在数组中独一无二。
难道是所有的记录存储在一个数组中,据我所知,索引允许在数组中存储重复? – Octtavius