Class: Whisper::Blog

Inherits:
Object
  • Object
show all
Includes:
Loggy
Defined in:
lib/whisper/blog.rb

Constant Summary collapse

MAX_RECENT_COMMENTS = 
30

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config, entryset, commentset, router, authors) ⇒ Blog

Returns a new instance of Blog.



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# File 'lib/whisper/blog.rb', line 13

def initialize config, entryset, commentset, router, authors
  @config = config
  @entryset = entryset
  @commentset = commentset
  @router = router
  @authors = authors
  @helper = CachedFile.new File.join(config.helper_dir, "helper.rb")
  @templates = {} # we'll create these lazily
  @paginations = {}
end

Instance Attribute Details

#entryset ⇒ Object

Returns the value of attribute entryset.



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# File 'lib/whisper/blog.rb', line 11

def entryset
  @entryset
end

#helper ⇒ Object

Returns the value of attribute helper.



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# File 'lib/whisper/blog.rb', line 11

def helper
  @helper
end

Instance Method Details

#comments_for_entries(entries) ⇒ Object 



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# File 'lib/whisper/blog.rb', line 151

def comments_for_entries entries
  @commentset.comments_by_entry_id.values_at(*entries.map { |e| e.id }).map { |x| x || [] }
end

#get_content_for(path, params, request_method) ⇒ Object 



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# File 'lib/whisper/blog.rb', line 27

def get_content_for path, params, request_method; @router.get_content_for path, params, request_method end

#install_default_routes!(emailer = nil) ⇒ Object 



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# File 'lib/whisper/blog.rb', line 46

def install_default_routes! emailer=nil
  common_opts = { :config => @config, :router => @router, :helper => @helper, :extra_deps => [@entryset, @commentset], :entryset => @entryset }

  @router.add_handler :index, :get, "/index/:page:format" do |route, page, format, params|
    debug "index handler called for page #{page.inspect} format #{format.inspect}"

    Page.new common_opts.merge({ :format => format, :url_vars => { :route => route },
      :master_template => template_for("master", format),
      :template => template_for("list", format) }) do

      pages = paginate :entries_by_page, @entryset.timestamp, @entryset.entries
      entries = pages[page] or raise InvalidPageError
      comments = comments_for_entries entries
      { :entries => entries.zip(comments), :pages => pages.size, :page => page,
        :recent_comments => recent_comments_and_entries, :route => route
      }
    end
  end

  @router.add_handler :label, :get, "/label/+label/:page:format" do |route, label, page, format, params|
    debug "label handler called for label #{label.inspect} page #{page.inspect} format #{format.inspect}"

    Page.new common_opts.merge({:format => format, :url_vars => { :route => route, :label => label },
      :master_template => template_for("master", format),
      :template => template_for("list", format) }) do

      raw_entries = @entryset.entries_by_label[label] or raise InvalidPageError
      pages = paginate [:entries_by_label, label], @entryset.timestamp, raw_entries
      entries = pages[page] or raise InvalidPageError
      comments = comments_for_entries entries
      { :entries => entries.zip(comments), :pages => pages.size, :page => page,
        :recent_comments => recent_comments_and_entries, :route => route, :label => label
      }
    end
  end

  @router.add_handler :author, :get, "/by/+author/:page:format" do |route, author, page, format, params|
    debug "author handler called for author #{author.inspect} page #{page.inspect} format #{format.inspect}"

    Page.new common_opts.merge({:format => format, :url_vars => { :route => route, :author => author },
      :master_template => template_for("master", format),
      :template => template_for("list", format) }) do

      pages = paginate [:entries_by_author, author], @entryset.timestamp, @entryset.entries_by_author[author]
      entries = pages[page] or raise InvalidPageError
      comments = comments_for_entries entries
      { :entries => entries.zip(comments), :pages => pages.size, :page => page,
        :recent_comments => recent_comments_and_entries, :route => route, :author => author
      }
    end
  end

  ## allow formats on /. why not.
  @router.add_handler :root, :get, "/:format" do |route, format, params|
    debug "root handler called with format #{format}"
    Page.new common_opts.merge({ :format => format, :url_vars => { :route => :index },
      :template => template_for("list", format),
      :master_template => template_for("master", format) }) do

      pages = paginate :entries_by_page, @entryset.timestamp, @entryset.entries
      entries = pages[0]
      comments = comments_for_entries entries
      { :entries => entries.zip(comments), :pages => pages.size, :page => 0,
        :recent_comments => recent_comments_and_entries, :route => route
      }
    end
  end

  if emailer
    @router.add_handler :comment, :post, "/comment/+id" do |route, id, params|
      debug "request comment handler called for id #{id} with params #{params.inspect}"
      begin
        emailer.handle_send_request id, params if emailer
        ["email sent!", "text/plain"]
      rescue EmailSender::Error => e
        ["error: #{e.message}", "text/plain"]
      end
    end
  end

  ## individual entry handler is the most generic (entry ids can be close to
  ## anything), so we install it last.
  @router.add_handler :entry, :get, "/+id:format" do |route, id, format, params|
    debug "entry handler called for id #{id.inspect} format #{format.inspect}"

    Page.new common_opts.merge({ :format => format, :url_vars => { :route => route, :id => id },
      :template => template_for("entry", format),
      :master_template => template_for("master", format)
      }) do

      raise InvalidPageError unless (entry = @entryset.entries_by_id[id])
      { :entry => entry, :comments => (@commentset.comment_tree_by_entry_id[entry.id] || {}),
        :recent_comments => recent_comments_and_entries, :route => route,
        :author_info => @authors
      }
    end
  end
end

#paginate(id, timestamp, things) ⇒ Object

we’re basically doing this by hand, but we could also make a separate paginator object and fit it into the dependency model.



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# File 'lib/whisper/blog.rb', line 34

def paginate id, timestamp, things
  time, pages = @paginations[id]
  if time.nil? || time < timestamp
    pages = things.paginate @config.page_size
    pages[0] ||= []
    debug "repaginated #{id.inspect}: turned #{things.size} things => #{pages.size} pages"
    time = Time.now
    @paginations[id] = [time, pages]
  end
  pages
end

#recent_comments_and_entries ⇒ Object 



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# File 'lib/whisper/blog.rb', line 145

def recent_comments_and_entries
  comments = @commentset.comments[0 ... MAX_RECENT_COMMENTS]
  entries_per_comment = @entryset.entries_by_id.values_at(*comments.map { |c| c.entry_id })
  comments.zip entries_per_comment
end

#tagline ⇒ Object 



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# File 'lib/whisper/blog.rb', line 25

def tagline; @config.tagline end

#template_for(name, format) ⇒ Object 



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# File 'lib/whisper/blog.rb', line 28

def template_for name, format
  @templates[[name, format]] ||= CachedFile.new File.join(@config.template_dir, "#{name}.r#{format}")
end

#title ⇒ Object 



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# File 'lib/whisper/blog.rb', line 24

def title; @config.title end