Nodejs Array Join joinModel(id_app,model,joinFields,fn)

Method Source Code

Array.prototype.joinModel = function(id_app,model,joinFields,fn){
   var array = this;   
   async.map(array,function(a,callback){
      async.map(joinFields,function(join,callback){
         var akey = join.akey;
         var bkey = join.bkey;
         var avalue = a[akey];
         var query = {id_app:id_app};
         query[bkey] = avalue;/*w  w w. j ava  2 s.  c  o m*/
         model.findOne(query).lean().exec(function(error,b){
            if(error) return callback(error);
            if(b){
               join.fields.forEach(function(map){
                  var name = map.name;
                  var value = map.value;
                  if(b[value]){
                     a[name] = b[value];
                  }
               });
            }
            callback(null);
         });
         
      },function(error,rs){
         if(error) return callback(error);
         callback();
      });
   },function(error,kqs){
      if(error) console.log(error);
      fn(array);
   });
}

Related

1. join()

   function foo(arr)
       var o2 = o;
       var y = 100;
       for (var i =0;i<10;i++)
           y += o2.x + arr;
       WScript.Echo(y);
   ...
   

2. join(separator)

   Array.prototype.join = function(separator) {
     var s = new String();
     for (var i = 0, len = this.length; i < len; i++) {
       s += (i > 0) ? separator : "";
       s += (typeof this[i] == "object" && this[i].constructor === Array) ? this[i].join(separator) : this[i];
     return s;
   };
   

3. joinsub(array, sizediff)

   Array.prototype.joinsub = function (array, sizediff) {
     if (!array)
       return null;
     var match = [];
     for (var i = 0; i < this.length; i++) {
       if (this[i].contains(array, sizediff)) {
         for (var j = 0; j < this[i].length; j++) {
           if (array.indexOf(this[i][j]) == -1) {
               match.push(this[i][j]);
   ...