articlesGist

  self.create = function (blog, user, callback) {
    console.log('ARTICLES_CREATE '+JSON.stringify(blog));
    var article = new Topic();
    article.locator = uuid.newUUID();
    article.instanceOf = self.types.BLOG_TYPE;
    article.creatorId = user._id;
    article.largeIcon = icons.PUBLICATION;
    article.smallIcon = icons.PUBLICATION_SM;
    //we have to take this apart, build the object from scratch
    // because of tags, which are relations.
    var label = blog.title;
    article.label = label;
    var details = blog.body;
    article.details = details;
    // fetch the user for later linking
    console.log('ARTICLES_CREATE-00 '+JSON.stringify(user));
    Topic.findNodeByLocator(user.username, function(err,result) {
      var thisUser = result;
      console.log('ARTICLES_CREATE-0 '+thisUser);
      var tags = blog.tags;
      console.log('ARTICLES_CREATE-1 '+article);
      console.log("ARTICLES_CREATE_1a "+self.TagModel);
      var tagList = tags.split(',');
      //process the tags -- wants the user topic so it can link user to tags
      self.TagModel.processTags(tagList, thisUser, article.locator, label, function(err,result) {
        console.log('NEW_POST '+JSON.stringify(result));
        //result is a structure:
        //{ locators: [],labels: [] }
        //which allows us to store the locators for each tag and the labels.
        //IN FACT: the TopicSchema is not setup to handle this structure,
        // but interestingly, could accept it anyway.
        //PERHAPS that's a better way to pass relations: a locator and some kind of label
        // with which to make an HREF at the browser
        var lox = result.locators;
		var labs = result.labels;
		//see to it that we have some tags
		if (lox) {
          var len = lox.length;
          for (var i=0;i<len;i++) {
            article.addRelation(self.types.SIMPLE_RELATION_TYPE, self.types.TAG_DOCUMENT_RELATION_TYPE, 'Tag-Document Relation', lox[i],labs[i]);
          }
		}
        console.log("ARTICLES_CREATE_2 "+JSON.stringify(article));
        article.addRelation(self.types.SIMPLE_RELATION_TYPE, self.types.DOCUMENT_CREATOR_RELATION_TYPE, 'Document-Creator Relation', user.handle,user.handle);
        article.save(function(err) {
          console.log('ARTICLES_CREATE-3 '+err);	  
          if (!err) {
              console.log('ARTICLES_CREATE-3a '+thisUser);	  
        	  
            thisUser.addRelation(self.types.SIMPLE_RELATION_TYPE, self.types.DOCUMENT_CREATOR_RELATION_TYPE, 'Document-Creator Relation', article.locator,"Blog Post");
            thisUser.save(function(err) {
              console.log('ARTICLES_CREATE-4 '+err);	  
              if (!err) {
                callback(err,article._id);
              } else {
                callback(err,null);
              }
            });
          } else {
            callback(err,null);
          }
        });
      });
    });
  };
};