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Introduce distinction between preview/productive site generation

Posts which contain the YAML attribute `published: false` are usually
not generated by Jekyll. With this patch they can be previewed just
like published posts on localhost using `rake watch`or `rake preview`.

NOTICE: Before pushing to the productive environment, use `rake generate`
to update the public directory and remove posts which are flagged not to be
published.

Frederic Hemberger authored on 23/11/2011 at 13:37:30
Showing 2 changed files
Rakefile
History View file @ f1ebf35
... ... 
@@ -59,7 +59,7 @@ task :watch do
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   raise "### You haven't set anything up yet. First run `rake install` to set up an Octopress theme." unless File.directory?(source_dir)
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   puts "Starting to watch source with Jekyll and Compass."
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   system "compass compile --css-dir #{source_dir}/stylesheets" unless File.exist?("#{source_dir}/stylesheets/screen.css")
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-  jekyllPid = Process.spawn("jekyll --auto")
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+  jekyllPid = Process.spawn({"OCTOPRESS_ENV"=>"preview"}, "jekyll --auto")
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   compassPid = Process.spawn("compass watch")
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   trap("INT") {
... ... 
@@ -75,7 +75,7 @@ task :preview do
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   raise "### You haven't set anything up yet. First run `rake install` to set up an Octopress theme." unless File.directory?(source_dir)
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   puts "Starting to watch source with Jekyll and Compass. Starting Rack on port #{server_port}"
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   system "compass compile --css-dir #{source_dir}/stylesheets" unless File.exist?("#{source_dir}/stylesheets/screen.css")
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-  jekyllPid = Process.spawn("jekyll --auto")
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+  jekyllPid = Process.spawn({"OCTOPRESS_ENV"=>"preview"}, "jekyll --auto")
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   compassPid = Process.spawn("compass watch")
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   rackupPid = Process.spawn("rackup --port #{server_port}")
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plugins/preview_unpublished.rb
History View file @ f1ebf35
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new file mode 100644
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@@ -0,0 +1,45 @@
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+# Monkeypatch for Jekyll
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+# Introduce distinction between preview/productive site generation
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+# so posts with YAML attribute `published: false` can be previewed
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+# on localhost without being published to the productive environment.
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+
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+module Jekyll
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+
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+  class Site
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+    # Read all the files in <source>/<dir>/_posts and create a new Post
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+    # object with each one.
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+    #
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+    # dir - The String relative path of the directory to read.
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+    #
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+    # Returns nothing.
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+    def read_posts(dir)
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+      base = File.join(self.source, dir, '_posts')
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+      return unless File.exists?(base)
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+      entries = Dir.chdir(base) { filter_entries(Dir['**/*']) }
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+
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+      # first pass processes, but does not yet render post content
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+      entries.each do |f|
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+        if Post.valid?(f)
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+          post = Post.new(self, self.source, dir, f)
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+
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+          # Monkeypatch:
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+          # On preview environment (localhost), publish all posts
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+          if ENV.has_key?('OCTOPRESS_ENV') && ENV['OCTOPRESS_ENV'] == 'preview'
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+            post.published = true
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+          end
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+
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+          if post.published && (self.future || post.date <= self.time)
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+            self.posts << post
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+            post.categories.each { |c| self.categories[c] << post }
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+            post.tags.each { |c| self.tags[c] << post }
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+          end
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+        end
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+      end
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+
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+      self.posts.sort!
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+
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+      # limit the posts if :limit_posts option is set
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+      self.posts = self.posts[-limit_posts, limit_posts] if limit_posts
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+    end
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+  end
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+end
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