不确定创建方法的工作原理-Ruby on Rails

Question

Ive created a twitter clone. I eventually found a way to get the create method to work. Im not 100% sure why it works though. I understand the if/else statement, its mainly the @tweet.user = @user i dont get. Could someone run through it? Thanks for any help.

 def create @user = current_user @tweet = Tweet.new(tweet_params) @tweet.user = @user authorize @tweet if @tweet.save redirect_to user_tweets_path else redirect_to user_tweets_path end end 

Answer 1

@tweet.user = @user is setting the user on the tweet. It's essentially creating the relationship between @user and @tweet by setting @tweet.user_id to @user.id .