目前我有一个存储在数组中的团队 ID 列表teamIds
。我的猫鼬模式中还有一个函数findByKey
,Team
它可以根据其键找到一个团队。正如您从代码中看到的那样,我必须将每个新的都Team.findByKey
放在前一个中,如果我把它放在前一个 findByKey 之外,它就不能正常工作。
我在将Team.findByKey
方法放入某种 for 循环时遇到问题,该循环可以遍历数组teamIds
和数组中的每个循环Team
。我正在开发创建新锦标赛的功能,其想法是您将一组 teamIds 传递到此处,并循环遍历每个 ID,搜索该团队并将其添加到teamsList
数组中以创建锦标赛。
我需要将创建Team
对象数组的最后一点代码放入我的问题的最后一个Team.findByKey
方法中。我将如何解决这个问题,以便我可以传递n
多个团队并找到每个团队并将其存储为数组Teams
?
这是我的代码:
app.get('/tournament', function(req, res){
function genMatches(nTeams) {
var matchArray = [];
while (nTeams > 1) {
nTeams = nTeams >> 1;
var matches = [];
for (var i = 0; i < nTeams; ++i) {
matches.push([]);
}
matchArray.push(matches);
}
return matchArray;
}
var teamIds = [
1364472344972,
1363173222886,
1363007586845,
1363007557484
]
var tournamentName = 'My Tournament';
Team.findByKey(teamIds[0], function(err, team1) {
if(err) {
util.log("Error occured");
}
if(!team1) {
util.log("The team does not exist");
}
Team.findByKey(teamIds[1], function(err, team2) {
if(err) {
return util.log("Error occured");
}
if(!team2) {
return util.log("The team does not exist");
}
Team.findByKey(teamIds[2], function(err, team3) {
if(err) {
return util.log("Error occured");
}
if(!team3) {
return util.log("The team does not exist");
}
Team.findByKey(teamIds[3], function(err, team4) {
if(err) {
return util.log("Error occured");
}
if(!team4) {
return util.log("The team does not exist");
}
var teamList = [
team1._id,
team2._id,
team3._id,
team4._id
];
var numRounds = Math.log(teamList.length)/Math.log(2);
var matches = genMatches(teamList.length);
for(var i = 0; i < matches[0].length; i++){
matches[0][i] = [ teamList[i+i], teamList[i+(i+1)] ]
}
var tournament = new Tournament({
name: tournamentName,
teams: teamList,
rounds: numRounds,
matches: matches
});
res.send(tournament);
});
});
});
});
});
团队架构:
'use strict';
var util = require('util');
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var validatePresenceOf = function(value){
return value && value.length;
};
var toLower = function(string){
return string.toLowerCase();
};
var getId = function(){
return new Date().getTime();
};
/**
* The Team schema. we will use timestamp as the unique key for each team
*/
var Team = new Schema({
'key' : {
unique : true,
type : Number,
default: getId
},
'name' : { type : String,
validate : [validatePresenceOf, 'Team name is required'],
index : { unique : true }
}
});
/**
* Get complete team details for all the teams
*/
Team.statics.getAll = function(cb){
var query = this.find({});
query.sort({key : -1});
return query.exec(cb);
};
Team.statics.findByKey = function(key, cb){
return this.find({'key' : key}, cb);
};
Team.statics.findByName = function(name, cb) {
return this.find({'name' : name}, cb);
};
module.exports = mongoose.model('Team', Team);