basic image uploading, some caching

Gemfile

@@ -33,6 +33,7 @@ gem 'geokit-rails3'
 gem 'spatial_adapter'
 gem 'rails_autolink'
 gem 'rb-readline'
+gem "paperclip"
 
 gem "nifty-generators", :group => :development
 gem "ruby-openid", :require => "openid"

app/controllers/home_controller.rb

@@ -1,10 +1,11 @@
 class HomeController < ApplicationController
 
-  before_filter :local
+  #caches_action :index, :cache_path => proc { |c|
+  #  node = DrupalNode.find :last #c.params[:id]
+  #  { :n => node.updated_at.to_i }
+  #end
 
-  def local
-
-  end
+  #caches_action :index, :cache_path => { :last => DrupalNode.find(:last).updated_at.to_i }
 
   def index
     @title = "Home"

app/controllers/images_controller.rb

@@ -0,0 +1,60 @@
+class ImagesController < ApplicationController
+
+  def create
+    if current_user && current_user.username == "warren"
+      @image = Image.new({
+        :uid => current_user.uid,
+        :photo => params[:image][:photo],
+        :title => params[:image][:title],
+        :notes => params[:image][:notes]
+      })
+      @image.nid = DrupalNode.find params[:nid] if params[:nid]
+      if @image.save!
+        flash[:notice] = "Image saved."
+      else
+        flash[:error] = "The image could not be saved."
+      end
+      redirect_to "/profile/"+current_user.username
+    else
+      prompt_login "You must be logged in to upload."
+    end
+  end
+
+  def new
+    @image = Image.new()
+  end
+
+  def update
+    if current_user && current_user.username == "warren"
+      @image = Image.find params[:id]
+      # make changes
+      if @image.save
+        flash[:notice] = "Image updated."
+      else
+        flash[:error] = "The image could not be updated."
+      end
+      redirect_to "/profile/"+@image.user.username
+    else
+      prompt_login "You must be logged in to edit images."
+    end
+  end
+
+  def delete
+    if current_user && current_user.username == "warren"
+      @image = Image.find params[:id]
+      if @image.uid == current_user.uid # or current_user.role == "admin" 
+        if @image.delete
+          flash[:notice] = "Image deleted."
+        else
+          flash[:error] = "The image could not be deleted."
+        end
+        redirect_to "/profile/"+@image.user.username
+      else
+        prompt_login "Only the owner can delete this image."
+      end
+    else
+      prompt_login "You must be logged in to delete images."
+    end
+  end
+
+end

app/models/drupal_comment.rb

@@ -1,5 +1,5 @@
 class DrupalComment < ActiveRecord::Base
-  belongs_to :drupal_node, :foreign_key => 'nid'
+  belongs_to :drupal_node, :foreign_key => 'nid', :touch => true
   has_one :drupal_users, :foreign_key => 'uid'
 
   validates :comment,  :presence => true

app/models/drupal_node.rb

@@ -17,6 +17,7 @@ class DrupalNode < ActiveRecord::Base
   has_many :drupal_content_type_map, :foreign_key => 'nid'
   has_many :drupal_content_field_bboxes, :foreign_key => 'nid'
   has_many :drupal_content_field_image_gallery, :foreign_key => 'nid'
+  has_many :images, :foreign_key => :nid
 
   validates :title, :presence => :true
   #validates :name, :format => {:with => /^[\w-]*$/, :message => "can only include letters, numbers, and dashes"}
@@ -126,7 +127,9 @@ def has_tag(tag)
   end
 
   def mailing_list
-    RSS::Parser.parse(open('https://groups.google.com/group/'+self.power_tag('list')+'/feed/rss_v2_0_topics.xml').read, false).items
+    Rails.cache.fetch("feed-"+self.id.to_s+"-"+(self.updated_at.to_i/300).to_i.to_s) do
+      RSS::Parser.parse(open('https://groups.google.com/group/'+self.power_tag('list')+'/feed/rss_v2_0_topics.xml').read, false).items
+    end
   end
 
   def icon

app/models/drupal_tag.rb

@@ -60,12 +60,11 @@ def self.find_nodes_by_type_with_all_tags(tagnames,type = "note",limit = 10)
     DrupalNode.find nids, :order => "nid DESC", :limit => limit
   end
 
-  def self.find_popular_notes(tag,limit = 8)
-    nodes = []
-    self.find_by_name(tag).drupal_node.filter_by_type('note',limit).each do |node|
-      nodes << node if node.totalcount > 20
-    end
-    nodes.uniq.sort{|a,b| b.created <=> a.created}
+  def self.find_popular_notes(tag,views = 20,limit = 10)
+    tids = DrupalTag.find(:all, :conditions => {:name => tag}).collect(&:tid)
+    nids = DrupalNodeCommunityTag.find(:all, :conditions => ["tid IN (?)",tids]).collect(&:nid)
+    nids += DrupalNodeTag.find(:all, :conditions => ["tid IN (?)",tids]).collect(&:nid)
+    DrupalNode.find_all_by_type "note", :conditions => ["node.nid in (?) AND node_counter.totalcount > (?)",nids.uniq,views], :order => "changed DESC", :limit => limit, :include => :drupal_node_counter
   end
 
 end

app/models/image.rb

@@ -0,0 +1,30 @@
+class Image < ActiveRecord::Base
+  attr_accessible :uid, :notes, :title, :photo, :nid
+
+  #has_many :comments, :dependent => :destroy
+  #has_many :likes, :dependent => :destroy
+  #has_many :tags, :dependent => :destroy
+  has_one :user, :foreign_key => :uid
+  has_one :node, :foreign_key => :nid
+
+  has_attached_file :photo, :styles => { :small => "150x150>", :medium => "500x375>", :large => "800x600>" },
+                  :url  => "/assets/products/:id/:style/:basename.:extension",
+                  :path => ":rails_root/public/assets/products/:id/:style/:basename.:extension"
+
+  validates :uid, :presence => :true
+  validates :photo, :presence => :true
+  validates :title, :presence => :true, :format => {:with => /\A[a-zA-Z0-9\ -_]+\z/, :message => "Only letters, numbers, and spaces allowed"}, :length => { :maximum => 60 }
+
+  # Paperclip
+  has_attached_file :photo,
+    :styles => {
+      :thumb=> "300x100!",
+      :large =>   "800x200!" }
+
+  has_attached_file :baseline,
+    :styles => {
+      :thumb=> "300x100!",
+      :large =>   "800x200!" }
+
+
+end

app/models/user.rb

@@ -7,6 +7,8 @@ class User < ActiveRecord::Base
                                 :email] 
   end
 
+  has_many :images, :foreign_key => :uid
+
   def uid
     DrupalUsers.find_by_name(self.username).uid
   end

app/views/home/_editor.html.erb

@@ -1,5 +1,3 @@
-<script src="/assets/editor.js" type="text/javascript"></script>
-
 <div class="btn-toolbar">
   <div class="btn-group">
     <a class="btn btn-small" onClick="$E.bold()"><i class="icon-bold"></i></a>

app/views/home/index.html.erb

@@ -91,7 +91,10 @@
         'near-infrared-camera',
         'thermal-photography'].each_with_index do |tagname,index| %>
     <div class="tab-pane<%= ' active' if index == 0 %>" id="<%= tagname %>">
-      <%= render :partial => "notes/tagged_notes", :locals => {:nodes => DrupalTag.find_popular_notes(tagname,4)} %>
+      <% @nodes =  DrupalTag.find_popular_notes(tagname,20,4) %>
+      <% cache "front-"+tagname+"-"+@nodes.first.id.to_s+"-"+@nodes.first.updated_at.to_i.to_s do %>
+        <%= render :partial => "notes/tagged_notes", :locals => {:nodes => @nodes} %>
+      <% end %>
       <p><a href="/tag/<%= tagname %>">More "<%= tagname %>" research &raquo;</a></p>
     </div>
     <% end %>

app/views/images/new.html.erb

@@ -0,0 +1,12 @@
+<h2>Upload an image</h2>
+
+<%= form_for @image, :html => { :multipart => true } do |f| %>
+  <%= f.error_messages %>
+
+  <%= f.file_field :photo %>
+
+  <p><%= f.text_field :title, {:placeholder => "Image title", :tabindex => 2} %></p>
+  <p><%= f.text_field :notes, {:class => "span12", :placeholder => "a short description"} %></p>
+
+  <p><button class="btn-large btn-primary" type="submit">Upload</button></p>
+<% end %>

app/views/like/_like.html.erb

@@ -1,6 +1,6 @@
 <div class="btn-toolbar pull-right" style="margin-left:10px;margin-top:0;">
   <div class="btn-group">
-    <a class="btn btn-small" rel="popover" data-content="<%= "No tags" if @tagnames.length == 0 %><% if @tagnames %><% @tagnames.each do |tag| %><a class='label label-inverse'><%= tag %></a> <% end %><% end %><hr /><a class='btn btn-small'><i class='icon-user'></i> <%= @node.author.name %></a>" title="Follow by tag or author" data-placement="bottom"><b class="caret"></b></a>
+    <a class="btn btn-small" rel="popover" data-content="<%= "No tags" if @tagnames.nil? || @tagnames.length == 0 %><% if @tagnames %><% @tagnames.each do |tag| %><a class='label label-inverse'><%= tag %></a> <% end %><% end %><hr /><a class='btn btn-small'><i class='icon-user'></i> <%= @node.author.name %></a>" title="Follow by tag or author" data-placement="bottom"><b class="caret"></b></a>
     <a rel="tooltip" title="Helpful? Awesome?" class="btn btn-small" href="#"><i class="icon-star"></i><span class="hidden-phone"> Like (8)</span></a>
     <a rel="tooltip" title="Updates/comments" id="follow" class="btn btn-small" href="#"><i class="icon-eye-open"></i><span class="hidden-phone"> Follow</span></a>
   </div>

app/views/users/profile.html.erb

@@ -11,6 +11,16 @@
 
   <p><%= raw RDiscount.new(@user.bio).to_html %></p>
 
+  <h3>Recent images</h3>
+
+  <p>Temporary display of images as part of the file upload feature.</p>
+
+  <% if current_user %>
+  <% current_user.images.each do |image| %>
+    <%= image_tag image.photo.url(:thumb) %>
+  <% end %>
+  <% end %>
+
   <hr />
 
   <div id="donut"></div>

config/routes.rb

@@ -1,5 +1,8 @@
 Plots2::Application.routes.draw do
   resources :rusers
+  resources :users
+  resources :user_sessions
+  resources :images
 
   # The priority is based upon order of creation:
   # first created -> highest priority.
@@ -13,8 +16,6 @@
   match 'register' => 'users#create'
   match 'users/list' => 'users#list'
   match 'signup' => 'users#new'
-  resources :users
-  resources :user_sessions
 
   match 'wiki/:id' => 'wiki#show'
   match 'wiki/revisions/:id' => 'wiki#revisions'

db/migrate/20130327222827_create_images.rb

@@ -0,0 +1,22 @@
+class CreateImages < ActiveRecord::Migration
+  def up
+    create_table :images do |t|
+      t.string :title
+      t.integer :uid
+      t.integer :nid
+      t.string :notes
+      t.integer :version, :default => 0
+
+      # attachment (paperclip)
+      t.string :photo_file_name
+      t.string :photo_content_type
+      t.string :photo_file_size
+
+      t.timestamps
+    end
+  end
+
+  def down
+    drop_table :images
+  end
+end