Method: Web#create_category_graph

Defined in:
app/models/web.rb

#create_category_graph(prog, show_authors, selected_categories, mm_size) ⇒ Object

{{{



208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
 
# File 'app/models/web.rb', line 208

def create_category_graph(prog, show_authors, selected_categories, mm_size) #{{{
  dotFile = File.expand_path("#{WikiService.storage_path}/graph.dot")
  mapFile = File.expand_path("#{WikiService.storage_path}/graph.map")
  pngFile = File.expand_path("#{WikiService.storage_path}/map.png")
  
  File.open(dotFile, "w") do |file|
    # Graph properties:
    output_graph_header_to file, mm_size
  
    # Page Special nodes properties:
    categs = selected_categories.empty? ? categories : selected_categories
    categs.each do |category|
      file.puts %{"#{category}" [fontsize=20,style=filled,color=grey,comment="#{category}",URL="../list/?category=#{category}"];}
    end
  
    # Links and node properties:
    nodes = filter_categories(pages.values, selected_categories)
    auths = authors # avoid repeated selects
    unless show_authors
      nodes.delete_if { |entry|
        auths.include? entry.name
      }
    end
    nodes.each do |page|
      file.puts %{"#{page.plain_name}" [URL=\"../show/#{page.name}\"];}
      page.categories.each do |category|
        file.puts %{"#{category}" -> "#{page.plain_name}";}
      end
    end

    output_graph_footer_to file
  end

  call_graphviz(prog, dotFile, mapFile, pngFile)
  
  [pngFile, mapFile]
end