Call 'structure' to save in postgres using rails - ruby-on-rails

Question

I have a 'publication' data structure, and my table name in postgres is 'publications'. I get a tweet from streaming and parse it according in class TweetFetcher. How do I call publication controller to save it to the database? PublicationController has the standard scrum abilities (new, create, show, edit...), where create is:
def create
#publication = Publications.new(params[:publication])
if #publication.save
redirect_to :action => 'list'
else
#subjects = Subject.find(:all)
render :action => 'new'
end
end
and parte of my twitter code is
class TweetFetcher
def saveTweet(parsedTweet)
pT = JSON.parse(parsedTweet)
#save here. like this?
#PublicationController.create(parsedTweet)
end
end

Answer 1

You shouldn't be using your controller in this situation, instead you can just build your record like this:
class TweetFetcher
def saveTweet(parsedTweet)
pT = JSON.parse(parsedTweet)
publication = Publications.new
publication.sample_field = pT.sample_field
... # set additional attributes
publication.save
end
end
Additionally, here is some advice/information that is not directly related to your question, but are things you should know:
The class name of your models should be singular, so instead of Publications, it should be Publication.
Method and variable names should be in snake case rather than camel case (i.e. save_tweet instead of saveTweet or parsed_tweet instead of parsedTweet).
The new hash syntax is prefered, unless of course you are using a Ruby version below 1.9. This looks like { key: value } instead of { key => value }.
Indentation for Ruby code is typically 2 spaces.
That being said, I would change your code like this:
PublicationsController#create
def create
#publication = Publication.new(params[:publication])
if #publication.save
redirect_to action: 'list'
else
#subjects = Subject.find(:all)
render action: 'new'
end
end
TweeFetcher
class TweetFetcher
def save_tweet(tweet)
parsed_tweet = JSON.parse(tweet)
publication = Publication.new
publication.sample_field = parsed_tweet.sample_field
... # set additional attributes
publication.save
end
end