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# A user has many tweets.. and sometimes we want to retweet. | |
class TweetsController < ApplicationController | |
def retweet | |
@tweet = Tweet.find(params[:id]) | |
if @tweet.user == current_user | |
flash[:notice] = "Sorry, you can't retweet your own tweets" | |
elsif @tweet.retweets.where(:user_id => current_user.id).present? | |
flash[:notice] = "You already retweeted!" | |
else | |
t = Tweet.new | |
t.status = "RT #{@tweet.user.name}: #{@tweet.status}" | |
t.original_tweet = @tweet | |
t.user = current_user | |
t.save | |
flash[:notice] = "Succesfully retweeted" | |
end | |
render :show | |
end | |
end | |
# This is a good example where the logic belongs in a Model. So our controller turns into | |
class TweetsController < ApplicationController | |
def retweet | |
@tweet = Tweet.find(params[:id]) | |
result_message = @tweet.retweet_by(current_user) | |
redirect_to(@tweet, :notice => result_message) | |
end | |
end | |
# And the logic moves to the Model. | |
class Tweet < ActiveRecord::Base | |
def retweet_by(current_user) | |
if self.user == current_user | |
"Sorry, you can't retweet your own tweets" | |
elsif self.retweets.where(:user_id => current_user.id).present? | |
"You already retweeted!" | |
else | |
t = Tweet.new | |
t.status = "RT #{self.user.name}: #{self.status}" | |
t.original_tweet = self | |
t.user = current_user | |
t.save | |
"Succesfully retweeted" | |
end | |
end | |
end |
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