node.js基于mongodb的搜索分页示例

varmongoose = require('mongoose');

varshortid = require('shortid');

varSchema = mongoose.Schema;

varIndexDataSchema =newSchema({

  _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}

};

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

module.exports = IndexData;

varformidable = require("formidable");

 varcommon = require('./common');

 varpath = require("path");

 varfs = require('fs');

 varpath = require('path');

 varguid = require('guid');

 varshortid = require('shortid');

 varAuctionHouse = require('./db/IndexData');

varfuns = {

 getList:function(collectionName, req, res, next) {

   varmainObj = transformCollctionName(collectionName);

   if(!mainObj) {

     next();

   }

   varoptions = req.query;

   varsort = options.sort || mainObj.defaultSort;

   varpageSize = options.pageSize || mainObj.defaultOptions.pageSize;

   varcurrentPage = options.currentPage || 1;

   varcondition = 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);

     }

     returnres.json(common.returnData(true, docs));

   })

 },

 countList:function(collectionName, req, res, next) {

   varmainObj = transformCollctionName(collectionName);

   if(!mainObj) {

     next();

   }

   varcondition = req.query.condition || {}

   mainObj.find(condition).count().exec(function(err, docs) {

     if(err) {

       next(err);

     }

     returnres.json({'count': docs});

   })

 },

 HandleEvent:function(collectionName, actionsName, req, res, next) {

   varmainFuns = getCollctionFuns(collectionName)

   if(!mainFuns) {

     next();

   }

   varfun = mainFuns[actionsName];

   if(!fun) {

     next();

   }

   fun(req, res, next);

 }