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：varmongoose=require('mongoose');varshortid=require('shortid'

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：

 <div class="searchPart">
 <input type="text" class="form-control" id="txtSearch" placeholder="请输入项目名称">
 <button class="btn btn-success search_btn" onclick="search()">搜索</button>
 </div>
 <script>
 var paginObj;
 
 //设置每页显示页码
 var pageSize = 20; 
 
 //设置当前页码为1
 var currentPage = 1;
 
 var condition = {'city': currentCityId, 'name': ''}
 jQuery(document).ready(function () {
 refresh();
 });
 
 //获取查找条件
 function getCondition() {
 var name = $('#txtSearch').val();
 if (name && name.trim()) {
 // {'$regex': name, '$options': 'i'}}为模糊查询固定语法，name为参数
 condition = {'city': currentCityId, 'name': {'$regex': name, '$options': 'i'}};
 }
 else {
 condition = {'city': currentCityId}
 }
 return condition;
 }
 
 //刷新页面
 function refresh() {
 
 //查找内容
 $.get('/Manage/list/projects', {
 'pageSize': pageSize,
 'currentPage': currentPage,
 'condition': getCondition()
 }, function (result) {
 appendData(result.data);
 })

//查找个数
 $.get('/Manage/listCount/projects', {'condition': condition}, function (result) {
 paginObj = new DataPagin(document.querySelector('.projects-list'), result.count, {
 'pageSize': pageSize,
 'changePageFun': rquestPageData
 });
 })
 }

//重新分页
 function rquestPageData(currentPage, callback) {
 $.get('/Manage/list/projects', {
 'pageSize': pageSize,
 'currentPage': currentPage,
 'condition': getCondition()
 }, function (result) {
 appendData(result.data);
 })
 if (callback) {
 callback();
 }
 }

//改变页码，显示相应的内容
 function changePage(paginObj, index) {
 paginObj.setPageNumber(index);
 }

 function appendData(data) {
 //debugger;
 var list = $('.projects-list').children('tbody');
 list.html('');
 // 页面显示模板
 for (var i = 0; i < data.length; i++) {
 
 .........
 //此部分自己定义
 
 
 })
 }

 
 //点击搜索按钮执行该方法
 function search() {
 currentPage = 1;
 refresh();
 }


</script>

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);
 }

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。