获取点赞记录，添加取消点赞功能

app/controllers/mobile/forumInfo.js

@@ -14,6 +14,7 @@ var forumTagService=require('../../service/forumTagService');
 var forumCommentService=require('../../service/forumCommentService');
 var forumThreadAttendService = require('../../service/forumThreadAttendService');
 var httpService = require('../../service/httpService');
+var redisPraiseLog = require('../../utils/redisPraiseLog');
 
 var user = require('../../utils/user');
 
@@ -153,9 +154,10 @@ router.get('/info/:fid/threads', function(req, res, next) {
     var pageNo = req.query.pageNo || 1;
     var pageSize = req.query.pageSize || 10;
     var fid = req.params.fid;
-    var sort = '-top -topTime -created'
+    var sort = '-top -topTime -created';
+    var ent_code = req.session.user.ent_code;
     var conditions = {
-        ent_code: req.session.user.ent_code,
+        ent_code: ent_code,
         level: 1,
         status:1
     };
@@ -192,7 +194,22 @@ router.get('/info/:fid/threads', function(req, res, next) {
                         console.error(err);
                         res.json(returnCode.BUSY);
                     } else {
+                        //判断是否已经点赞
+                        redisPraiseLog.get(ent_code,user.getMobileUser(req),'thread', function(error, docs){
+                            _.forEach(results.items, function(d,i) {
+                                if(results.items[i].toObject){
+                                    results.items[i] = results.items[i].toObject();
+                                }
+                                results.items[i].isPraise = false;
+                                for (var k = docs.length - 1; k >= 0; k--) {
+                                    if(results.items[i]._id == docs[k]){
+                                        results.items[i].isPraise = true;
+                                        break;
+                                    }
+                                };
+                            });
                             res.json(_.assign(results, returnCode.SUCCESS));
+                        });
                     }
                 });
             }
@@ -545,9 +562,9 @@ router.get('/info/:fid/serachThreads', function(req, res, next) {
     var pageNo = req.query.pageNo || 1;
     var pageSize = req.query.pageSize || 10;
     var content = req.query.content;
-
+    var ent_code = req.session.user.ent_code;
     var conditions = {
-        ent_code: req.session.user.ent_code,
+        ent_code: ent_code,
         status:1,
         info: fid
     };
@@ -591,7 +608,22 @@ router.get('/info/:fid/serachThreads', function(req, res, next) {
                         console.error(err);
                         res.json(returnCode.BUSY);
                     } else {
+                        //判断是否已经点赞
+                        redisPraiseLog.get(ent_code,user.getMobileUser(req),'thread', function(error, docs){
+                            _.forEach(results.items, function(d,i) {
+                                if(results.items[i].toObject){
+                                    results.items[i] = results.items[i].toObject();
+                                }
+                                results.items[i].isPraise = false;
+                                for (var k = docs.length - 1; k >= 0; k--) {
+                                    if(results.items[i]._id == docs[k]){
+                                        results.items[i].isPraise = true;
+                                        break;
+                                    }
+                                };
+                            });
                             res.json(_.assign(results, returnCode.SUCCESS));
+                        });
                     }
                 });
             }

app/models/forumPraiseLog.js

@@ -35,6 +35,11 @@ var ForumPraiseLogSchema = new Schema({
 		type: String,
 		require: true
 	},
+	status: { //状态，0点赞，1取消点赞
+		type: Number,
+		require: true,
+		default: 0
+	}, 
 	created: { //点赞时间
 		type: Date,
 		require: true,

app/service/forumPraiseLogService.js

@@ -24,7 +24,7 @@ exports.queryPraiseLog=function(tid,cid,user,type,callback){
 	if(cid){
 		conditions.comment=cid;
 	}
-	ForumPraiseLog.find(conditions).exec(function(err,docs){
+	ForumPraiseLog.findOne(conditions).sort({created : -1}).exec(function(err,docs){
 		if(err){
 			callback(err,null);
 		}else{
@@ -33,6 +33,21 @@ exports.queryPraiseLog=function(tid,cid,user,type,callback){
 	});
 };
 
+//更新
+exports.updatePraiseLog=function(id, status,callback){
+	ForumPraiseLog.findOneAndUpdate({
+        _id: id
+    }, {
+        status: status
+    }, function(err, doc) {
+        if (err) {
+            callback(err, null);
+        } else {
+            callback(null, doc);
+        }
+    });
+};
+
 
 exports.queryPraiseLogV2=function(conditions,callback){
 	ForumPraiseLog.find(conditions).populate('user').exec(function(err,docs){
@@ -43,3 +58,14 @@ exports.queryPraiseLogV2=function(conditions,callback){
 		}
 	});
 };
+
+
+exports.queryPraiseLogV3=function(conditions,callback){
+	ForumPraiseLog.find(conditions).exec(function(err,docs){
+		if(err){
+			callback(err,null);
+		}else{
+			callback(null,docs);
+		}
+	});
+};

app/service/forumThreadService.js

@@ -882,6 +882,28 @@ exports.updateThreadRaiseCount = function(threadId, callback) {
         });
 };
 
+//减少文章点赞数
+exports.updateThreadRaiseCountDec = function(threadId, callback) {
+    ForumThread.update({
+        _id: threadId
+    }, {
+        $inc: {
+            praise_count: -1
+        }
+    }, {
+        w: 1,
+        safe: true
+    },
+    function(err, result) {
+        if (err) {
+            console.error(err);
+            callback(err, null);
+        } else {
+            callback(null, null);
+        }
+    });
+};
+
 //更新文章分享数
 exports.updateThreadShareCount = function(threadId, callback) {
     ForumThread.update({

app/utils/redisPraiseLog.js

+'use strict';
+
+var redis=global.redis;
+var prefix = '_userPraiseLog_';
+var expire = 60*60*12;
+
+
+var _ = require('lodash');
+var then = require('thenjs');
+var forumPraiseLogService=require('../service/forumPraiseLogService');
+
+function getKey(entcode,userId,type){
+	var key = entcode + userId + prefix + type;
+	return key;
+}
+
+function setToRedis(entcode,userId,type,value){
+	var key = getKey(entcode,userId,type);
+	if(!redis){
+		console.log('redis error');
+		return 'error'
+	}
+	redis.set(key, value, function(error, res){
+		redis.expire(key, expire);
+		return 'success'
+	});
+}
+
+exports.get=function(entcode,userId,type,callback){
+	var key = getKey(entcode,userId,type);
+	if(!redis){
+		console.log('redis error');
+		return callback && callback('error');
+	}
+	redis.get(key, function(error, res){
+		if(!res){
+			//不存在，先获取再返回
+			getPraiseLogs(entcode, userId, function(err){
+				redis.get(key, function(error, res){
+					return callback && callback(error, res.split(",") || 0);
+			    });
+			});
+		}else{
+			return callback && callback(error, res.split(",") || 0);
+		}
+    });
+};
+
+exports.set=function(entcode,userId,type,value,callback){
+	var key = getKey(entcode,userId,type);
+	if(!redis){
+		console.log('redis error');
+		return callback && callback('error');
+	}
+	redis.set(key, value, function(error, res){
+		redis.expire(key, expire);
+		return callback && callback(error, 'success');
+	});
+};
+
+
+exports.clear = function(entcode,userId,type,callback){
+	var key = getKey(entcode,userId,type);
+	if(!redis){
+		console.log('redis error');
+		return callback && callback('error');
+	}
+	redis.del(key, function(error, res){
+		return callback && callback(error, !!res);
+    });
+};
+
+
+function getPraiseLogs(ent_code,userId,callback){
+	if(userId && ent_code){
+		var conditions = {
+			user:userId,
+			ent_code:ent_code,
+			status:{$ne : 1}
+		}
+
+		then.parallel([
+	        function(cont) { //查询帖子点赞
+	        	conditions.type = 1;
+	            forumPraiseLogService.queryPraiseLogV3(conditions, function(err, docs){
+	            	var threads = [];
+	            	_.forEach(docs, function(e) {
+                        threads.push(e.thread);
+                    });
+		            cont(err, threads);
+		        });
+	        },
+	        function(cont) { //查询评论点赞
+	        	conditions.type = 2;
+	            forumPraiseLogService.queryPraiseLogV3(conditions, function(err, docs){
+	            	var comments = [];
+	            	_.forEach(docs, function(d) {
+	            		comments.push(d.comment);
+	            	});
+		            cont(err, comments);
+		        });
+	        }
+	    ]).then(function(cont, results) {
+	    	setToRedis(ent_code,userId,'thread',results[0]);
+	    	setToRedis(ent_code,userId,'comment',results[1]);
+	        callback(null);
+	    }).fail(function(cont, err) {
+	        console.error(err);
+	        callback(err);
+	    });
+	}else{
+		callback('err');
+	}
+}
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