374 lines
10 KiB
JavaScript
374 lines
10 KiB
JavaScript
var postModel = require('../models/post').PostModel;
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var redisClient = require('../utility/redisClient');
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var tool = require('../utility/tool');
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/**
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* 为首页数据查询构建条件对象
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* @param params 查询参数对象
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* @returns {{}}
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*/
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function getPostsQuery(params) {
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var query = {};
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query.IsActive = true;
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query.IsDraft = false;
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if (params.cateId) {
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query.CategoryId = params.cateId;
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}
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if (params.keyword) {
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switch (params.filterType) {
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case '1':
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query.Title = {"$regex": params.keyword, "$options": "gi"};
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break;
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case '2':
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query.Labels = {"$regex": params.keyword, "$options": "gi"};
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break;
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case '3':
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query.CreateTime = {"$regex": params.keyword, "$options": "gi"};
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break;
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default:
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query.$or = [{
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"Title": {
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"$regex": params.keyword,
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"$options": "gi"
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}
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}, {
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'Labels': {
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"$regex": params.keyword,
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"$options": "gi"
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}
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}, {
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'Summary': {
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"$regex": params.keyword,
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"$options": "gi"
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}
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}, {
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'Content': {
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"$regex": params.keyword,
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"$options": "gi"
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}
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}];
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}
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}
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return query;
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}
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/**
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* 获取首页的文章数据
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* @param params 参数对象
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* @param callback 回调函数
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*/
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exports.getPosts = function (params, callback) {
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var cache_key = tool.generateKey('posts', params);
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redisClient.getItem(cache_key, function (err, posts) {
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if (err) {
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return callback(err);
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}
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if (posts) {
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return callback(null, posts);
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}
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var page = parseInt(params.pageIndex) || 1;
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page = page > 0 ? page : 1;
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var options = {};
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options.skip = (page - 1) * params.pageSize;
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options.limit = params.pageSize;
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options.sort = params.sortBy === 'title' ? 'Title -CreateTime' : '-CreateTime';
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var query = getPostsQuery(params);
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postModel.find(query, {}, options, function (err, posts) {
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if (err) {
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return callback(err);
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}
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if (posts) {
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redisClient.setItem(cache_key, posts, redisClient.defaultExpired, function (err) {
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if (err) {
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return callback(err);
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}
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})
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}
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return callback(null, posts);
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});
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});
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};
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/**
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* 获取首页的文章数
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* @param params 参数对象
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* @param callback 回调函数
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*/
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exports.getPostsCount = function (params, callback) {
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var cache_key = tool.generateKey('posts_count', params);
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redisClient.getItem(cache_key, function (err, pageCount) {
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if (err) {
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return callback(err);
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}
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if (pageCount) {
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return callback(null, pageCount);
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}
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var query = getPostsQuery(params);
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postModel.count(query, function (err, count) {
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if (err) {
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return callback(err);
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}
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var pageCount = count % params.pageSize === 0 ? parseInt(count / params.pageSize) : parseInt(count / params.pageSize) + 1;
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redisClient.setItem(cache_key, pageCount, redisClient.defaultExpired, function (err) {
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if (err) {
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return callback(err);
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}
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});
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return callback(null, pageCount);
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});
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});
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};
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/**
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* 根据alias获取文章
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* @param alias 文章alias
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* @param callback 回调函数
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*/
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exports.getPostByAlias = function (alias, callback) {
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var cache_key = 'article_' + alias;
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//此处不需要等待MongoDB的响应，所以不想传一个回调函数，但如果不传回调函数，则必须在调用Query对象上的exec()方法！
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//postModel.update({"Alias": alias}, {"ViewCount": 1}, function () {});
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postModel.update({"Alias": alias}, {"$inc": {"ViewCount": 1}}).exec();
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redisClient.getItem(cache_key, function (err, article) {
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if (err) {
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return callback(err);
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}
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if (article) {
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return callback(null, article);
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}
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postModel.findOne({"Alias": alias}, function (err, article) {
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if (err) {
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return callback(err);
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}
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if (article) {
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redisClient.setItem(cache_key, article, redisClient.defaultExpired, function (err) {
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if (err) {
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return callback(err);
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}
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});
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}
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return callback(null, article);
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})
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});
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};
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/**
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* 为后台数据查询构建条件对象
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* @param params
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* @returns {{}}
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*/
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function getArticlesQuery(params) {
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var query = {};
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if (params.cateId) {
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query.CategoryId = params.cateId;
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}
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if (params.uniqueId) {
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query._id = params.uniqueId;
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}
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if (params.title) {
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query.Title = {"$regex": params.title, "$options": "gi"};
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}
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if (params.searchText) {
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query.$or = [{
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"Alias": {
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"$regex": params.searchText,
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"$options": "gi"
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}
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}, {
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"Title": {
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"$regex": params.searchText,
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"$options": "gi"
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}
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}, {
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"Summary": {
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"$regex": params.searchText,
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"$options": "gi"
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}
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}, {
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"Content": {
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"$regex": params.searchText,
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"$options": "gi"
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}
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}, {
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"Labels": {
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"$regex": params.searchText,
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"$options": "gi"
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}
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}, {
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"Url": {
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"$regex": params.searchText,
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"$options": "gi"
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}
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}]
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}
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return query;
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}
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/**
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* 获取管理页面的文章数据
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* @param params 参数对象
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* @param callback 回调函数
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*/
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exports.getArticles = function (params, callback) {
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var page = parseInt(params.pageIndex) || 1;
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page = page > 0 ? page : 1;
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var options = {};
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options.skip = (page - 1) * params.pageSize;
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options.limit = params.pageSize;
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switch (params.sortName) {
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case 'ModifyTime':
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options.sort = params.sortOrder === 'desc' ? '-ModifyTime -CreateTime' : 'ModifyTime CreateTime';
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break;
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case 'ViewCount':
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options.sort = params.sortOrder === 'desc' ? '-ViewCount -CreateTime' : 'ViewCount CreateTime';
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break;
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default:
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options.sort = params.sortOrder === 'desc' ? '-CreateTime' : 'CreateTime';
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break;
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}
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var query = getArticlesQuery(params);
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postModel.find(query, {}, options, function (err, posts) {
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if (err) {
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return callback(err);
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}
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return callback(null, posts);
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});
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};
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/**
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* 获取管理页面的文章数
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* @param params 参数对象
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* @param callback 回调函数
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*/
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exports.getArticlesCount = function (params, callback) {
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var query = getArticlesQuery(params);
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postModel.count(query, function (err, count) {
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if (err) {
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return callback(err);
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}
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return callback(null, count);
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});
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};
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/**
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* 判断文章Alias是否唯一
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* @param alias 文章Alias
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* @param articleId 文章Id
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* @param callback 回调函数
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*/
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exports.checkAlias = function (alias, articleId, callback) {
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postModel.findOne({"Alias": alias}, function (err, article) {
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if (err) {
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return callback(err);
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}
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if (!article) {
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return callback(null, true);
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} else {
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if (article._id === articleId) {
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return callback(null, true);
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} else {
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return callback(null, false);
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}
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}
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})
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};
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/**
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* 根据id获取文章
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* @param id 文章id
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* @param callback 回调函数
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*/
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exports.getById = function (id, callback) {
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postModel.findById(id, function (err, article) {
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if (err) {
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return callback(err);
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}
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return callback(null, article);
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});
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};
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/**
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* 新增或更新文章
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* @param params 参数对象
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* @param callback 回调函数
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*/
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exports.save = function (params, callback) {
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var _id = params.UniqueId,
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entity = new postModel({
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Title: params.Title,
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Alias: params.Alias,
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Summary: params.Summary,
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Source: params.Source,
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Content: params.Content,
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CategoryId: params.CategoryId,
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Labels: params.Labels,
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Url: params.Url,
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IsDraft: params.IsDraft === 'True',
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IsActive: true,
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ModifyTime: new Date()
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});
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postModel.findById(_id, function (err, article) {
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if (err) {
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return callback(err);
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}
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if (!article) {
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//新增
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entity._id = _id;
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entity.ViewCount = 0;
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entity.CreateTime = new Date();
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entity.save(function (err) {
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if (err) {
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return callback(err);
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}
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return callback(null);
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});
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} else {
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//更新
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postModel.update({"_id": _id}, entity, function (err) {
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if (err) {
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return callback(err);
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}
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return callback(null);
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});
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}
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})
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};
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/**
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* 软删除文章
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* @param ids 文章id，多个id以逗号分隔
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* @param callback 回调函数
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*/
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exports.delete = function (ids, callback) {
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var idArray = ids.split(','),
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hasErr = false,
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index = 0;
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idArray.forEach(function (id) {
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postModel.update({'_id': id}, {'IsActive': false}, function (err) {
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index++;
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if (err) {
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hasErr = true;
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}
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if (index === idArray.length) {
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if (hasErr) {
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return callback(err);
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}
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return callback(null);
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}
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});
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});
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};
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/**
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* 恢复删除的文章
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* @param id 文章id
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* @param callback 回调函数
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*/
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exports.undo = function (id, callback) {
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postModel.update({'_id': id}, {'IsActive': true}, function (err) {
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if (err) {
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return callback(err);
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}
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return callback(null);
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});
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}; |