From 8fbf76b4846928556df6093302b19a32b17942cb Mon Sep 17 00:00:00 2001
From: Serge Paquet <srgpqt@gmail.com>
Date: Mon, 23 Dec 2013 22:20:06 -0500
Subject: [PATCH] use activerecord query interface instead of deprecated finder
 methods

---
 app/controllers/application_controller.rb     |  9 +--
 app/controllers/comments_controller.rb        | 57 ++++++++++---------
 app/controllers/filters_controller.rb         |  4 +-
 app/controllers/home_controller.rb            | 23 ++++----
 app/controllers/invitations_controller.rb     |  4 +-
 app/controllers/login_controller.rb           |  2 +-
 app/controllers/messages_controller.rb        |  2 +-
 app/controllers/moderations_controller.rb     |  2 +-
 app/controllers/signup_controller.rb          |  4 +-
 app/controllers/stories_controller.rb         | 29 ++++++----
 app/controllers/users_controller.rb           |  4 +-
 app/models/comment.rb                         |  5 +-
 app/models/invitation.rb                      |  3 +-
 app/models/invitation_request.rb              |  3 +-
 app/models/keystore.rb                        |  2 +-
 app/models/message.rb                         |  2 +-
 app/models/story.rb                           |  6 +-
 app/models/tag.rb                             |  2 +-
 app/models/vote.rb                            | 15 +++--
 .../20121112165212_add_tag_media_types.rb     |  2 +-
 extras/markdowner.rb                          |  2 +-
 script/parse_inbound_mail                     |  4 +-
 22 files changed, 102 insertions(+), 84 deletions(-)

diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index ac763bb..8614bbd 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -9,7 +9,7 @@ class ApplicationController < ActionController::Base
 
   def authenticate_user
     if session[:u]
-      @user = User.find_by_session_token(session[:u].to_s)
+      @user = User.where(:session_token => session[:u].to_s).first
     end
 
     true
@@ -59,8 +59,9 @@ class ApplicationController < ActionController::Base
 
   @_tags_filtered = nil
   def tags_filtered_by_cookie
-    @_tags_filtered ||= cookies[TAG_FILTER_COOKIE].to_s.split(",").map{|t|
-      Tag.find_by_tag(t) }.reject{|tf| !tf }
+    @_tags_filtered ||= Tag.where(
+      :tag => cookies[TAG_FILTER_COOKIE].to_s.split(",")
+    )
   end
 
   def user_is_spider?
@@ -69,7 +70,7 @@ class ApplicationController < ActionController::Base
 
   def find_user_from_rss_token
     if !@user && request[:format] == "rss" && params[:token].to_s.present?
-      @user = User.find_by_rss_token(params[:token].to_s)
+      @user = User.where(:rss_token => params[:token].to_s).first
     end
   end
 end
diff --git a/app/controllers/comments_controller.rb b/app/controllers/comments_controller.rb
index 83c8398..f6b389a 100644
--- a/app/controllers/comments_controller.rb
+++ b/app/controllers/comments_controller.rb
@@ -8,7 +8,7 @@ class CommentsController < ApplicationController
   before_filter :find_user_from_rss_token, :only => [ :index ]
 
   def create
-    if !(story = Story.find_by_short_id(params[:story_id])) || story.is_gone?
+    if !(story = Story.where(:short_id => params[:story_id]).first) || story.is_gone?
       return render :text => "can't find story", :status => 400
     end
 
@@ -18,8 +18,8 @@ class CommentsController < ApplicationController
     comment.user_id = @user.id
 
     if params[:parent_comment_short_id].present?
-      if pc = Comment.find_by_story_id_and_short_id(story.id,
-      params[:parent_comment_short_id])
+      if pc = Comment.where(:story_id => story.id, :short_id =>
+      params[:parent_comment_short_id]).first
         comment.parent_comment_id = pc.id
         # needed for carryng along in comment preview form
         comment.parent_comment_short_id = params[:parent_comment_short_id]
@@ -31,8 +31,8 @@ class CommentsController < ApplicationController
 
     # prevent double-clicks of the post button
     if !params[:preview].present? &&
-    (pc = Comment.find_by_story_id_and_user_id_and_parent_comment_id(story.id,
-    @user.id, comment.parent_comment_id))
+    (pc = Comment.where(:story_id => story.id, :user_id => @user.id,
+      :parent_comment_id => comment.parent_comment_id).first)
       if (Time.now - pc.created_at) < 5.minutes
         comment.errors.add(:comment, "^You have already posted a comment " <<
           "here recently.")
@@ -72,8 +72,7 @@ class CommentsController < ApplicationController
   end
 
   def edit
-    if !((comment = Comment.find_by_short_id(params[:comment_id])) &&
-    comment.is_editable_by_user?(@user))
+    if !((comment = find_comment) && comment.is_editable_by_user?(@user))
       return render :text => "can't find comment", :status => 400
     end
 
@@ -83,8 +82,7 @@ class CommentsController < ApplicationController
   end
 
   def delete
-    if !((comment = Comment.find_by_short_id(params[:comment_id])) &&
-    comment.is_deletable_by_user?(@user))
+    if !((comment = find_comment) && comment.is_deletable_by_user?(@user))
       return render :text => "can't find comment", :status => 400
     end
 
@@ -96,8 +94,7 @@ class CommentsController < ApplicationController
   end
 
   def undelete
-    if !((comment = Comment.find_by_short_id(params[:comment_id])) &&
-    comment.is_undeletable_by_user?(@user))
+    if !((comment = find_comment) && comment.is_undeletable_by_user?(@user))
       return render :text => "can't find comment", :status => 400
     end
 
@@ -109,8 +106,7 @@ class CommentsController < ApplicationController
   end
 
   def update
-    if !((comment = Comment.find_by_short_id(params[:comment_id])) &&
-    comment.is_editable_by_user?(@user))
+    if !((comment = find_comment) && comment.is_editable_by_user?(@user))
       return render :text => "can't find comment", :status => 400
     end
 
@@ -133,8 +129,7 @@ class CommentsController < ApplicationController
   end
 
   def preview
-    if !((comment = Comment.find_by_short_id(params[:comment_id])) &&
-    comment.is_editable_by_user?(@user))
+    if !((comment = find_comment) && comment.is_editable_by_user?(@user))
       return render :text => "can't find comment", :status => 400
     end
 
@@ -149,7 +144,7 @@ class CommentsController < ApplicationController
   end
 
   def unvote
-    if !(comment = Comment.find_by_short_id(params[:comment_id]))
+    if !(comment = find_comment)
       return render :text => "can't find comment", :status => 400
     end
 
@@ -160,7 +155,7 @@ class CommentsController < ApplicationController
   end
 
   def upvote
-    if !(comment = Comment.find_by_short_id(params[:comment_id]))
+    if !(comment = find_comment)
       return render :text => "can't find comment", :status => 400
     end
 
@@ -171,7 +166,7 @@ class CommentsController < ApplicationController
   end
 
   def downvote
-    if !(comment = Comment.find_by_short_id(params[:comment_id]))
+    if !(comment = find_comment)
       return render :text => "can't find comment", :status => 400
     end
 
@@ -198,13 +193,17 @@ class CommentsController < ApplicationController
       @page = params[:page].to_i
     end
 
-    @comments = Comment.find(
-      :all,
-      :conditions => "is_deleted = 0 AND is_moderated = 0",
-      :order => "created_at DESC",
-      :offset => ((@page - 1) * COMMENTS_PER_PAGE),
-      :limit => COMMENTS_PER_PAGE,
-      :include => [ :user, :story ])
+    @comments = Comment.where(
+      :is_deleted => false, :is_moderated => false
+    ).order(
+      "created_at DESC"
+    ).offset(
+      (@page - 1) * COMMENTS_PER_PAGE
+    ).limit(
+      COMMENTS_PER_PAGE
+    ).includes(
+      :user, :story
+    )
 
     if @user
       @votes = Vote.comment_votes_by_user_for_comment_ids_hash(@user.id,
@@ -220,7 +219,7 @@ class CommentsController < ApplicationController
 
   def threads
     if params[:user]
-      @showing_user = User.find_by_username!(params[:user])
+      @showing_user = User.where(:username => params[:user]).first!
       @heading = @title = "Threads for #{@showing_user.username}"
       @cur_url = "/threads/#{@showing_user.username}"
     elsif !@user
@@ -269,4 +268,10 @@ end
 
     @comments = @threads.flatten
   end
+
+private
+
+  def find_comment
+    Comment.where(:short_id => params[:comment_id]).first
+  end
 end
diff --git a/app/controllers/filters_controller.rb b/app/controllers/filters_controller.rb
index cb5939b..b398c13 100644
--- a/app/controllers/filters_controller.rb
+++ b/app/controllers/filters_controller.rb
@@ -23,7 +23,7 @@ class FiltersController < ApplicationController
 
     params.each do |k,v|
       if (m = k.match(/^tag_(.+)$/)) && v.to_i == 1 &&
-      (t = Tag.find_by_tag(m[1])) && t.valid_for?(@user)
+      (t = Tag.where(:tag => m[1]).first) && t.valid_for?(@user)
         new_filters.push m[1]
       end
     end
@@ -40,7 +40,7 @@ class FiltersController < ApplicationController
       new_filters.each do |t|
         tf = TagFilter.new
         tf.user_id = @user.id
-        tf.tag_id = Tag.find_by_tag(t).id
+        tf.tag_id = Tag.where(:tag => t).first.id
         tf.save!
       end
     else
diff --git a/app/controllers/home_controller.rb b/app/controllers/home_controller.rb
index 2c6bce7..3176497 100644
--- a/app/controllers/home_controller.rb
+++ b/app/controllers/home_controller.rb
@@ -55,7 +55,7 @@ class HomeController < ApplicationController
   end
 
   def newest_by_user
-    for_user = User.find_by_username!(params[:user])
+    for_user = User.where(:username => params[:user]).first!
 
     @stories = find_stories_for_user_and_tag_and_newest_and_by_user(@user,
       nil, false, for_user.id)
@@ -70,7 +70,7 @@ class HomeController < ApplicationController
   end
 
   def tagged
-    @tag = Tag.find_by_tag!(params[:tag])
+    @tag = Tag.where(:tag => params[:tag]).first!
     @stories = find_stories_for_user_and_tag_and_newest_and_by_user(@user,
       @tag, false, nil)
 
@@ -168,13 +168,16 @@ private
       conds += filtered_tag_ids
     end
 
-    stories = Story.find(
-      :all,
-      :conditions => conds,
-      :include => [ :user, { :taggings => :tag } ],
-      :limit => STORIES_PER_PAGE + 1,
-      :offset => ((@page - 1) * STORIES_PER_PAGE),
-      :order => (newest ? "stories.created_at DESC" : "hotness")
+    stories = Story.where(
+      *conds
+    ).includes(
+      :user, :taggings => :tag
+    ).limit(
+      STORIES_PER_PAGE + 1
+    ).offset(
+      (@page - 1) * STORIES_PER_PAGE
+    ).order(
+      newest ? "stories.created_at DESC" : "hotness"
     )
 
     show_more = false
@@ -201,7 +204,7 @@ private
     # eager load comment counts
     if stories.any?
       comment_counts = {}
-      Keystore.find(:all, :conditions => stories.map{|s|
+      Keystore.where(stories.map{|s|
       "`key` = 'story:#{s.id}:comment_count'" }.join(" OR ")).each do |ks|
         comment_counts[ks.key[/\d+/].to_i] = ks.value
       end
diff --git a/app/controllers/invitations_controller.rb b/app/controllers/invitations_controller.rb
index 51ce196..743bf03 100644
--- a/app/controllers/invitations_controller.rb
+++ b/app/controllers/invitations_controller.rb
@@ -10,7 +10,7 @@ class InvitationsController < ApplicationController
   end
 
   def confirm_email
-    if !(ir = InvitationRequest.find_by_code(params[:code].to_s))
+    if !(ir = InvitationRequest.where(:code => params[:code].to_s).first)
       flash[:error] = "Invalid or expired invitation request"
       return redirect_to "/invitations/request"
     end
@@ -67,7 +67,7 @@ class InvitationsController < ApplicationController
   end
 
   def send_for_request
-    if !(ir = InvitationRequest.find_by_code(params[:code].to_s))
+    if !(ir = InvitationRequest.where(:code => params[:code].to_s).first)
       flash[:error] = "Invalid or expired invitation request"
       return redirect_to "/invitations"
     end
diff --git a/app/controllers/login_controller.rb b/app/controllers/login_controller.rb
index 2939621..539bc53 100644
--- a/app/controllers/login_controller.rb
+++ b/app/controllers/login_controller.rb
@@ -51,7 +51,7 @@ class LoginController < ApplicationController
     @title = "Reset Password"
 
     if params[:token].blank? ||
-    !(@reset_user = User.find_by_password_reset_token(params[:token].to_s))
+    !(@reset_user = User.where(:password_reset_token => params[:token].to_s).first)
       flash[:error] = "Invalid reset token.  It may have already been " <<
         "used or you may have copied it incorrectly."
       return redirect_to forgot_password_url
diff --git a/app/controllers/messages_controller.rb b/app/controllers/messages_controller.rb
index d465340..fb3bf7a 100644
--- a/app/controllers/messages_controller.rb
+++ b/app/controllers/messages_controller.rb
@@ -96,7 +96,7 @@ class MessagesController < ApplicationController
 
 private
   def find_message
-    if @message = Message.find_by_short_id(params[:message_id] || params[:id])
+    if @message = Message.where(:short_id => params[:message_id] || params[:id]).first
       if (@message.author_user_id == @user.id ||
       @message.recipient_user_id == @user.id)
         return true
diff --git a/app/controllers/moderations_controller.rb b/app/controllers/moderations_controller.rb
index ec2f249..896b61d 100644
--- a/app/controllers/moderations_controller.rb
+++ b/app/controllers/moderations_controller.rb
@@ -14,6 +14,6 @@ class ModerationsController < ApplicationController
     end
 
     @moderations = Moderation.order("id desc").limit(50).offset((@page - 1) *
-      50).all
+      50)
   end
 end
diff --git a/app/controllers/signup_controller.rb b/app/controllers/signup_controller.rb
index d735696..b6d436c 100644
--- a/app/controllers/signup_controller.rb
+++ b/app/controllers/signup_controller.rb
@@ -16,7 +16,7 @@ class SignupController < ApplicationController
       return redirect_to "/"
     end
 
-    if !(@invitation = Invitation.find_by_code(params[:invitation_code].to_s))
+    if !(@invitation = Invitation.where(:code => params[:invitation_code].to_s).first)
       flash[:error] = "Invalid or expired invitation"
       return redirect_to "/signup"
     end
@@ -30,7 +30,7 @@ class SignupController < ApplicationController
   end
 
   def signup
-    if !(@invitation = Invitation.find_by_code(params[:invitation_code].to_s))
+    if !(@invitation = Invitation.where(:code => params[:invitation_code].to_s).first)
       flash[:error] = "Invalid or expired invitation."
       return redirect_to "/signup"
     end
diff --git a/app/controllers/stories_controller.rb b/app/controllers/stories_controller.rb
index 4c9847d..325fde2 100644
--- a/app/controllers/stories_controller.rb
+++ b/app/controllers/stories_controller.rb
@@ -5,7 +5,7 @@ class StoriesController < ApplicationController
   before_filter :require_logged_in_user, :only => [ :delete, :create, :edit,
     :fetch_url_title, :new ]
 
-  before_filter :find_story, :only => [ :destroy, :edit, :undelete, :update ]
+  before_filter :find_user_story, :only => [ :destroy, :edit, :undelete, :update ]
 
   def create
     @title = "Submit Story"
@@ -116,7 +116,7 @@ class StoriesController < ApplicationController
   end
 
   def show
-    @story = Story.find_by_short_id!(params[:id])
+    @story = Story.where(:short_id => params[:id]).first!
 
     if @story.can_be_seen_by_user?(@user)
       @title = @story.title
@@ -144,11 +144,11 @@ class StoriesController < ApplicationController
   end
 
   def show_comment
-    @story = Story.find_by_short_id!(params[:id])
+    @story = Story.where(:short_id => params[:id]).first!
 
     @title = @story.title
 
-    @showing_comment = Comment.find_by_short_id(params[:comment_short_id])
+    @showing_comment = Comment.where(:short_id => params[:comment_short_id]).first
 
     if !@showing_comment
       flash[:error] = "Could not find comment.  It may have been deleted."
@@ -208,7 +208,7 @@ class StoriesController < ApplicationController
   end
 
   def unvote
-    if !(story = Story.find_by_short_id(params[:story_id]))
+    if !(story = find_story)
       return render :text => "can't find story", :status => 400
     end
 
@@ -219,7 +219,7 @@ class StoriesController < ApplicationController
   end
 
   def upvote
-    if !(story = Story.find_by_short_id(params[:story_id]))
+    if !(story = find_story)
       return render :text => "can't find story", :status => 400
     end
 
@@ -230,7 +230,7 @@ class StoriesController < ApplicationController
   end
 
   def downvote
-    if !(story = Story.find_by_short_id(params[:story_id]))
+    if !(story = find_story)
       return render :text => "can't find story", :status => 400
     end
 
@@ -245,12 +245,17 @@ class StoriesController < ApplicationController
   end
 
 private
+
   def find_story
+    Story.where(:short_id => params[:story_id]).first
+  end
+
+  def find_user_story
     if @user.is_moderator?
-      @story = Story.find_by_short_id(params[:story_id] || params[:id])
+      @story = Story.where(:short_id => params[:story_id] || params[:id]).first
     else
-      @story = Story.find_by_user_id_and_short_id(@user.id,
-        (params[:story_id] || params[:id]))
+      @story = Story.where(:user_id => @user.id, :short_id =>
+        (params[:story_id] || params[:id])).first
     end
 
     if !@story
@@ -263,8 +268,8 @@ private
 
   def load_user_votes
     if @user
-      if v = Vote.find_by_user_id_and_story_id_and_comment_id(@user.id,
-      @story.id, nil)
+      if v = Vote.where(:user_id => @user.id, :story_id => @story.id,
+      :comment_id => nil).first
         @story.vote = v.vote
       end
 
diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index 3506670..2202dbb 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -1,6 +1,6 @@
 class UsersController < ApplicationController
   def show
-    @showing_user = User.find_by_username!(params[:id])
+    @showing_user = User.where(:username => params[:id]).first!
     @title = "User #{@showing_user.username}"
   end
 
@@ -13,7 +13,7 @@ class UsersController < ApplicationController
       (parents[u.invited_by_user_id.to_i] ||= []).push u
     end
 
-    Keystore.find(:all, :conditions => "`key` like 'user:%:karma'").each do |k|
+    Keystore.where("key like 'user:%:karma'").each do |k|
       karmas[k.key[/\d+/].to_i] = k.value
     end
 
diff --git a/app/models/comment.rb b/app/models/comment.rb
index e11333c..01311b4 100644
--- a/app/models/comment.rb
+++ b/app/models/comment.rb
@@ -130,7 +130,7 @@ class Comment < ActiveRecord::Base
 
   def deliver_mention_notifications
     self.plaintext_comment.scan(/\B\@([\w\-]+)/).flatten.uniq.each do |mention|
-      if u = User.find_by_username(mention)
+      if u = User.where(:username => mention).first
         if u.id == self.user.id
           next
         end
@@ -309,8 +309,7 @@ class Comment < ActiveRecord::Base
       cs = [ "story_id = ?", story_id ]
     end
 
-    Comment.find(:all, :conditions => cs, :order => "confidence DESC",
-    :include => :user).each do |c|
+    Comment.where(*cs).order("confidence DESC").includes(:user).each do |c|
       (parents[c.parent_comment_id.to_i] ||= []).push c
     end
 
diff --git a/app/models/invitation.rb b/app/models/invitation.rb
index c953591..ea99f8e 100644
--- a/app/models/invitation.rb
+++ b/app/models/invitation.rb
@@ -18,7 +18,8 @@ class Invitation < ActiveRecord::Base
         raise "too many hash collisions"
       end
 
-      if !Invitation.find_by_code(self.code = Utils.random_str(15))
+      self.code = Utils.random_str(15)
+      unless Invitation.exists?(:code => self.code)
         break
       end
     end
diff --git a/app/models/invitation_request.rb b/app/models/invitation_request.rb
index 1065e0a..1424b0b 100644
--- a/app/models/invitation_request.rb
+++ b/app/models/invitation_request.rb
@@ -18,7 +18,8 @@ class InvitationRequest < ActiveRecord::Base
         raise "too many hash collisions"
       end
 
-      if !InvitationRequest.find_by_code(self.code = Utils.random_str(15))
+      self.code = Utils.random_str(15)
+      unless InvitationRequest.exists?(:code => self.code)
         break
       end
     end
diff --git a/app/models/keystore.rb b/app/models/keystore.rb
index 2ffb73b..123e8da 100644
--- a/app/models/keystore.rb
+++ b/app/models/keystore.rb
@@ -4,7 +4,7 @@ class Keystore < ActiveRecord::Base
   attr_accessible nil
 
   def self.get(key)
-    Keystore.find_by_key(key)
+    self.where(:key => key).first
   end
 
   def self.put(key, value)
diff --git a/app/models/message.rb b/app/models/message.rb
index 543d114..a9308f2 100644
--- a/app/models/message.rb
+++ b/app/models/message.rb
@@ -60,7 +60,7 @@ class Message < ActiveRecord::Base
   def recipient_username=(username)
     self.recipient_user_id = nil
 
-    if u = User.find_by_username(username)
+    if u = User.where(:username => username).first
       self.recipient_user_id = u.id
       @recipient_username = username
     else
diff --git a/app/models/story.rb b/app/models/story.rb
index 974aed2..91c4d0f 100644
--- a/app/models/story.rb
+++ b/app/models/story.rb
@@ -96,7 +96,7 @@ class Story < ActiveRecord::Base
     end
     conds[0] << ")"
 
-    if s = Story.find(:first, :conditions => conds)
+    if s = Story.where(*conds).first
       return s
     end
 
@@ -302,8 +302,8 @@ class Story < ActiveRecord::Base
     end
 
     new_tag_names_a.each do |tag_name|
-      if tag_name.to_s != "" && !self.tags.map{|t| t.tag }.include?(tag_name)
-        if t = Tag.find_by_tag(tag_name)
+      if tag_name.to_s != "" && !self.tags.exists?(:tag => tag_name)
+        if t = Tag.where(:tag => tag_name).first
           # we can't lookup whether the user is allowed to use this tag yet
           # because we aren't assured to have a user_id by now; we'll do it in
           # the validation with check_tags
diff --git a/app/models/tag.rb b/app/models/tag.rb
index 3bc36d7..7d7d976 100644
--- a/app/models/tag.rb
+++ b/app/models/tag.rb
@@ -9,7 +9,7 @@ class Tag < ActiveRecord::Base
   end
 
   def self.all_with_filtered_counts_for(user)
-    counts = TagFilter.count(:group => "tag_id")
+    counts = TagFilter.group(:tag_id).count
 
     Tag.order(:tag).accessible_to(user).map{|t|
       t.filtered_count = counts[t.id].to_i
diff --git a/app/models/vote.rb b/app/models/vote.rb
index 439d33b..20e4bbd 100644
--- a/app/models/vote.rb
+++ b/app/models/vote.rb
@@ -36,8 +36,11 @@ class Vote < ActiveRecord::Base
   def self.comment_votes_by_user_for_story_hash(user_id, story_id)
     votes = {}
 
-    Vote.find(:all, :conditions => [ "user_id = ? AND story_id = ? AND " +
-    "comment_id IS NOT NULL", user_id, story_id ]).each do |v|
+    Vote.where(
+      :user_id => user_id, :story_id => story_id
+    ).where(
+      "comment_id IS NOT NULL"
+    ).each do |v|
       votes[v.comment_id] = { :vote => v.vote, :reason => v.reason }
     end
 
@@ -58,7 +61,7 @@ class Vote < ActiveRecord::Base
     end
     cond[0] += ")"
 
-    Vote.find(:all, :conditions => cond).each do |v|
+    Vote.where(*cond).each do |v|
       votes[v.story_id] = { :vote => v.vote, :reason => v.reason }
     end
 
@@ -79,7 +82,7 @@ class Vote < ActiveRecord::Base
     end
     cond[0] += ")"
 
-    Vote.find(:all, :conditions => cond).each do |v|
+    Vote.where(*cond).each do |v|
       votes[v.comment_id] = { :vote => v.vote, :reason => v.reason }
     end
 
@@ -88,8 +91,8 @@ class Vote < ActiveRecord::Base
 
   def self.vote_thusly_on_story_or_comment_for_user_because(vote, story_id,
   comment_id, user_id, reason, update_counters = true)
-    v = Vote.find_or_initialize_by_user_id_and_story_id_and_comment_id(user_id,
-      story_id, comment_id)
+    v = Vote.where(:user_id => user_id, :story_id => story_id,
+      :comment_id => comment_id).first_or_initialize
 
     if !v.new_record? && v.vote == vote
       return
diff --git a/db/migrate/20121112165212_add_tag_media_types.rb b/db/migrate/20121112165212_add_tag_media_types.rb
index a87ffef..f141997 100644
--- a/db/migrate/20121112165212_add_tag_media_types.rb
+++ b/db/migrate/20121112165212_add_tag_media_types.rb
@@ -3,7 +3,7 @@ class AddTagMediaTypes < ActiveRecord::Migration
     add_column :tags, :is_media, :boolean, :default => false
 
     [ "pdf", "video" ].each do |t|
-      if tag = Tag.find_by_tag(t)
+      if tag = Tag.where(:tag => t).first
         tag.is_media = true
         tag.save
       end
diff --git a/extras/markdowner.rb b/extras/markdowner.rb
index fa336af..79fc2ca 100644
--- a/extras/markdowner.rb
+++ b/extras/markdowner.rb
@@ -33,7 +33,7 @@ class Markdowner
     if !opts[:disable_profile_links]
       # make @username link to that user's profile
       html.gsub!(/\B\@([\w\-]+)/) do |u|
-        if User.find_by_username(u[1 .. -1])
+        if User.exists?(:username => u[1 .. -1])
           "<a href=\"/u/#{u[1 .. -1]}\">#{u}</a>"
         else
           u
diff --git a/script/parse_inbound_mail b/script/parse_inbound_mail
index 2560fdb..6447aae 100755
--- a/script/parse_inbound_mail
+++ b/script/parse_inbound_mail
@@ -70,9 +70,9 @@ end
 irt = email[:in_reply_to].to_s.gsub(/[^A-Za-z0-9@\.]/, "")
 
 if m = irt.match(/^comment\.([^\.]+)\.\d+@/)
-  parent = Comment.find_by_short_id(m[1])
+  parent = Comment.where(:short_id => m[1]).first
 elsif m = irt.match(/^story\.([^\.]+)\.\d+@/)
-  parent = Story.find_by_short_id(m[1])
+  parent = Story.where(:short_id => m[1]).first
 end
 
 if !parent