node.js基于mongodb的搜索分页示例

mongodb模糊查询并分页

1.建立数据库

代码如下：

var mongoose = require('mongoose');
var shortid = require('shortid');
var Schema = mongoose.Schema;

var IndexDataSchema = new Schema({
  _id: {
    type: String,
    unique: true,
    'default': shortid.generate
  },
  type: String,
  city: String,
  name:string,
  value: [{name: String, value: String}],
  create: {type: Date, default: Date.now},
  expand: String
});

IndexDataSchema.statics = {
  defaultSort: {'create': 1},
  defaultOptions: {'pageSize': 0}

};


var IndexData = mongoose.model('IndexData', IndexDataSchema);

module.exports = IndexData;

页面布局 这里只需要搜索框和搜索按钮，再点击按钮时，执行search()方法并发送请求

代码如下：

 
   
   搜索
 
 

到数据库查找并返回相应内容

 var formidable = require("formidable");
  var common = require('./common');
  var path = require("path");
  var fs = require('fs');
  var path = require('path');
  var guid = require('guid');
  var shortid = require('shortid');
  
  var AuctionHouse = require('./db/IndexData');


 var funs = {
  getList: function (collectionName, req, res, next) {
    var mainObj = transformCollctionName(collectionName);
    if (!mainObj) {
      next();
    }
    var options = req.query;
    var sort = options.sort || mainObj.defaultSort;
    var pageSize = options.pageSize || mainObj.defaultOptions.pageSize;
    var currentPage = options.currentPage || 1;
    var condition = options.condition || {}
    
    //此部分为查找条件
    mainObj.find(condition).sort(sort).skip((currentPage - 1) * pageSize).limit(pageSize).exec(function (err, docs) {
      if (err) {
 next(err);
      }
      return res.json(common.returnData(true, docs));
    })
  },
  countList: function (collectionName, req, res, next) {
    var mainObj = transformCollctionName(collectionName);
    if (!mainObj) {
      next();
    }
    var condition = req.query.condition || {}
    mainObj.find(condition).count().exec(function (err, docs) {
      if (err) {
 next(err);
      }
      return res.json({'count': docs});
    })
  },
  HandleEvent: function (collectionName, actionsName, req, res, next) {
    var mainFuns = getCollctionFuns(collectionName)
    if (!mainFuns) {
      next();
    }
    var fun = mainFuns[actionsName];
    if (!fun) {
      next();
    }
    fun(req, res, next);
  }

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