Merge pull request #195 from substantial/refactor_archive_widget

Refactor archive widget

app/helpers/refinery/blog/posts_helper.rb

@@ -1,14 +1,6 @@
 module Refinery
   module Blog
     module PostsHelper
-      def blog_archive_widget
-        posts = Refinery::Blog::Post.select('published_at').all_previous
-        return nil if posts.blank?
-
-        render :partial => "/refinery/blog/widgets/blog_archive", :locals => { :posts => posts }
-      end
-      alias_method :blog_archive_list, :blog_archive_widget
-
       def next_or_previous?(post)
         post.next.present? or post.prev.present?
       end
@@ -28,22 +20,51 @@ module Refinery
         end
       end
 
-      def archive_link(post)
-        if post.published_at >= Time.now.end_of_year.advance(:years => -3)
-          post_date = post.published_at.strftime('%m/%Y')
-          year = post_date.split('/')[1]
-          month = post_date.split('/')[0]
-          count = Blog::Post.by_archive(Time.parse(post_date)).size
-          text = t("date.month_names")[month.to_i] + " #{year} (#{count})"
+      def blog_archive_widget(dates=blog_archive_dates)
+        ArchiveWidget.new(dates, self).display
+      end
 
-          link_to(text, refinery.blog_archive_posts_path(:year => year, :month => month))
-        else
-          post_date = post.published_at.strftime('01/%Y')
-          year = post_date.split('/')[1]
-          count = Refinery::Blog::Post.by_year(Time.parse(post_date)).size
-          text = "#{year} (#{count})"
+      def blog_archive_dates(cutoff=Time.now.beginning_of_month)
+        Refinery::Blog::Post.published_dates_older_than(cutoff)
+      end
 
-          link_to(text, refinery.blog_archive_posts_path(:year => year))
+      class ArchiveWidget
+        delegate :t, :link_to, :refinery, :render, :to => :view_context
+        attr_reader :view_context
+
+        def initialize(dates, view_context, cutoff=3.years.ago.end_of_year)
+          @recent_dates, @old_dates = dates.sort_by {|date| -date.to_i }.
+            partition {|date| date > cutoff }
+
+          @view_context = view_context
+        end
+
+        def recent_links
+          @recent_dates.group_by {|date| [date.year, date.month] }.
+            map {|(year, month), dates| recent_link(year, month, dates.count) }
+        end
+
+        def recent_link(year, month, count)
+          link_to "#{t("date.month_names")[month]} #{year} (#{count})",
+            refinery.blog_archive_posts_path(:year => year, :month => month)
+        end
+
+        def old_links
+          @old_dates.group_by {|date| date.year }.
+            map {|year, dates| old_link(year, dates.size) }
+        end
+
+        def old_link(year, count)
+          link_to "#{year} (#{count})", refinery.blog_archive_posts_path(:year => year)
+        end
+
+        def links
+          recent_links + old_links
+        end
+
+        def display
+          return "" if links.empty?
+          render "refinery/blog/widgets/blog_archive", :links => links
         end
       end
     end

app/models/refinery/blog/post.rb

@@ -63,16 +63,16 @@ module Refinery
       end
 
       class << self
-        def by_archive(archive_date)
-          where(['published_at between ? and ?', archive_date.beginning_of_month, archive_date.end_of_month])
+        def by_archive(date)
+          where(:published_at => date.beginning_of_month..date.end_of_month)
         end
 
-        def by_year(archive_year)
-          where(['published_at between ? and ?', archive_year.beginning_of_year, archive_year.end_of_year])
+        def by_year(date)
+          where(:published_at => date.beginning_of_year..date.end_of_year)
         end
 
-        def all_previous
-          where(['published_at <= ?', Time.now.beginning_of_month])
+        def published_dates_older_than(date)
+          where("published_at <= ?", date).map(&:published_at)
         end
 
         def live

app/views/refinery/blog/widgets/_blog_archive.html.erb

@@ -2,9 +2,9 @@
   <h2><%= t('archives', :scope => 'refinery.blog.shared') %></h2>
   <nav>
     <ul>
-      <% posts.each do |post| %>
-      <li><%= archive_link(post) %></li>
+      <% links.each do |link| %>
+        <li><%= link %></li>
       <% end %>
     </ul>
   </nav>
-</section> 
+</section>

spec/helpers/refinery/blog/posts_helper_spec.rb

@@ -0,0 +1,71 @@
+require 'spec_helper'
+
+module Refinery
+  module Blog
+    describe PostsHelper do
+      describe "#blog_archive_widget" do
+        let(:html) { helper.blog_archive_widget(dates) }
+        let(:links) { Capybara.string(html).find("#blog_archive_widget ul") }
+
+        context "with no archive dates" do
+          let(:dates) { [] }
+
+          it "does not display anything" do
+            html.should be_blank
+          end
+        end
+
+        context "with archive dates" do
+          let(:recent_post) { 2.months.ago }
+          let(:old_post) { 4.years.ago }
+
+          let(:dates) do
+            [old_post, recent_post].map do |date|
+              [date, date.beginning_of_month, date.end_of_month]
+            end.flatten
+          end
+
+          it "has a link for the month of dates not older than one year" do
+            month = Date::MONTHNAMES[recent_post.month]
+            year = recent_post.year
+
+            links.should have_link("#{month} #{year} (3)")
+          end
+
+          it "has a link for the year of dates older than one year" do
+            year = old_post.year
+
+            links.should have_link("#{year} (3)")
+          end
+
+          it "sorts recent links before old links" do
+            links.find("li:first").should have_content(recent_post.year.to_s)
+            links.find("li:last").should have_content(old_post.year.to_s)
+          end
+        end
+
+        context "with multiple recent dates" do
+          let(:dates) { [3.months.ago, 2.months.ago] }
+
+          it "sorts by the more recent date" do
+            first, second = dates.map {|p| Date::MONTHNAMES[p.month] }
+
+            links.find("li:first").should have_content(second)
+            links.find("li:last").should have_content(first)
+          end
+        end
+
+        context "with multiple old dates" do
+          let(:dates) { [5.years.ago, 4.years.ago] }
+
+          it "sorts by the more recent date" do
+            first, second = dates.map {|p| p.year.to_s }
+
+            links.find("li:first").should have_content(second)
+            links.find("li:last").should have_content(first)
+          end
+        end
+      end
+    end
+  end
+end

spec/models/refinery/blog/post_spec.rb

@@ -49,11 +49,11 @@ module Refinery
 
       describe "authors" do
         it "are authored" do
-          subject.class.instance_methods.map(&:to_sym).should include(:author)
+          described_class.instance_methods.map(&:to_sym).should include(:author)
         end
       end
 
-      describe "by_archive scope" do
+      describe "by_archive" do
         before do
           @post1 = FactoryGirl.create(:blog_post, :published_at => Date.new(2011, 3, 11))
           @post2 = FactoryGirl.create(:blog_post, :published_at => Date.new(2011, 3, 12))
@@ -65,25 +65,26 @@ module Refinery
         it "returns all posts from specified month" do
           #check for this month
           date = "03/2011"
-          subject.class.by_archive(Time.parse(date)).count.should be == 2
-          subject.class.by_archive(Time.parse(date)).should == [@post2, @post1]
+          described_class.by_archive(Time.parse(date)).count.should be == 2
+          described_class.by_archive(Time.parse(date)).should == [@post2, @post1]
         end
       end
 
-      describe "all_previous scope" do
+      describe ".published_dates_older_than" do
         before do
           @post1 = FactoryGirl.create(:blog_post, :published_at => Time.now - 2.months)
           @post2 = FactoryGirl.create(:blog_post, :published_at => Time.now - 1.month)
           FactoryGirl.create(:blog_post, :published_at => Time.now)
         end
 
-        it "returns all posts from previous months" do
-          subject.class.all_previous.count.should be == 2
-          subject.class.all_previous.should == [@post2, @post1]
+        it "returns all published dates older than the argument" do
+          expected = [@post2.published_at, @post1.published_at]
+
+          described_class.published_dates_older_than(1.day.ago).should eq(expected)
         end
       end
 
-      describe "live scope" do
+      describe "live" do
         before do
           @post1 = FactoryGirl.create(:blog_post, :published_at => Time.now.advance(:minutes => -2))
           @post2 = FactoryGirl.create(:blog_post, :published_at => Time.now.advance(:minutes => -1))
@@ -92,12 +93,12 @@ module Refinery
         end
 
         it "returns all posts which aren't in draft and pub date isn't in future" do
-          subject.class.live.count.should be == 2
-          subject.class.live.should == [@post2, @post1]
+          described_class.live.count.should be == 2
+          described_class.live.should == [@post2, @post1]
         end
       end
 
-      describe "uncategorized scope" do
+      describe "uncategorized" do
         before do
           @uncategorized_post = FactoryGirl.create(:blog_post)
           @categorized_post = FactoryGirl.create(:blog_post)
@@ -106,22 +107,22 @@ module Refinery
         end
 
         it "returns uncategorized posts if they exist" do
-          subject.class.uncategorized.should include @uncategorized_post
-          subject.class.uncategorized.should_not include @categorized_post
+          described_class.uncategorized.should include @uncategorized_post
+          described_class.uncategorized.should_not include @categorized_post
         end
       end
 
       describe "#live?" do
         it "returns true if post is not in draft and it's published" do
-          FactoryGirl.create(:blog_post).live?.should be_true
+          Factory.build(:blog_post).should be_live
         end
 
         it "returns false if post is in draft" do
-          FactoryGirl.create(:blog_post, :draft => true).live?.should be_false
+          Factory.build(:blog_post, :draft => true).should_not be_live
         end
 
         it "returns false if post pub date is in future" do
-          FactoryGirl.create(:blog_post, :published_at => Time.now.advance(:minutes => 1)).live?.should be_false
+          Factory.build(:blog_post, :published_at => Time.now.advance(:minutes => 1)).should_not be_live
         end
       end
 
@@ -132,7 +133,7 @@ module Refinery
         end
 
         it "returns next article when called on current article" do
-          subject.class.last.next.should == @post
+          described_class.last.next.should == @post
         end
       end
 
@@ -143,7 +144,7 @@ module Refinery
         end
 
         it "returns previous article when called on current article" do
-          subject.class.first.prev.should == @post
+          described_class.first.prev.should == @post
         end
       end
 
@@ -171,7 +172,7 @@ module Refinery
           end
 
           it "should be true" do
-            subject.class.comments_allowed?.should be_true
+            described_class.comments_allowed?.should be_true
           end
         end
 
@@ -181,7 +182,7 @@ module Refinery
           end
 
           it "should be false" do
-            subject.class.comments_allowed?.should be_false
+            described_class.comments_allowed?.should be_false
           end
         end
       end
@@ -199,7 +200,7 @@ module Refinery
           end
 
           it "should be true" do
-            subject.class.teasers_enabled?.should be_true
+            described_class.teasers_enabled?.should be_true
           end
         end
 
@@ -209,7 +210,7 @@ module Refinery
           end
 
           it "should be false" do
-            subject.class.teasers_enabled?.should be_false
+            described_class.teasers_enabled?.should be_false
           end
         end
       end
@@ -246,4 +247,4 @@ module Refinery
       
     end
   end
-end
+end