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= RailRoad RailRoad generates models and controllers diagrams in DOT language for a Rails application. = Usage Run RailRoad on the Rails application's root directory. You can redirect its output to a .dot file or pipe it to the dot or neato utilities to produce a graphic. Model diagrams are intended to be processed using dot and controller diagrams are best processed using neato. railroad [options] command == Options Common options: -b, --brief Generate compact diagram (no attributes nor methods) -e, --exclude file1[,fileN] Exclude given files -c, --class-map file1,MyClass1[,fileN,MyClassN] Map files to classes they contain -i, --inheritance Include inheritance relations -l, --label Add a label with diagram information (type, date, migration, version) -o, --output FILE Write diagram to file FILE -v, --verbose Enable verbose output (produce messages to STDOUT) -u, --yuml Produce yuml instead of DOT (for http://yuml.me) Models diagram options: -a, --all Include all models (not only ActiveRecord::Base derived) --hide-magic Hide magic field names --hide-types Hide attributes type -j, --join Concentrate edges -m, --modules Include modules -p, --plugins-models Include plugins models -y, --libraries Include application library -t, --transitive Include transitive associations (through inheritance) Controllers diagram options: --hide-public Hide public methods --hide-protected Hide protected methods --hide-private Hide private methods Other options: -h, --help Show this message --version Show version and copyright == Commands -M, --models Generate models diagram -C, --controllers Generate controllers diagram -A, --aasm Generate "acts as state machine" diagram -L, --lifecycle Generate Hobo::Lifecycle state machine diagram == Examples railroad -o models.dot -M Produces a models diagram to the file 'models.dot' railroad -a -i -o full_models.dot -M Models diagram with all classes showing inheritance relations railroad -M | dot -Tsvg > models.svg Model diagram in SVG format railroad -M -u Print yuml format diagram, used by http://yuml.me railroad -C | neato -Tpng > controllers.png Controller diagram in PNG format railroad -h Shows usage help = Processing DOT files To produce a PNG image from model diagram generated by RailRoad you can issue the following command: dot -Tpng models.dot > models.png If you want to do the same with a controller diagram, use neato instead of dot: neato -Tpng controllers.dot > controllers.png If you want to produce SVG (vectorial, scalable, editable) files, you can do the following: dot -Tsvg models.dot > models.svg neato -Tsvg controllers.dot > controllers.svg Important: There is a bug in Graphviz tools when generating SVG files that cause a text overflow. You can solve this problem editing (with a text editor, not a graphical SVG editor) the file and replacing around line 12 "font-size:14.00;" by "font-size:11.00;", or by issuing the following command (see "man sed"): sed -i 's/font-size:14.00/font-size:11.00/g' file.svg sed -i 's/font-size:14.00/font-size:11px/g' file.svg # alternative Note: For viewing and editing SVG there is an excellent opensource tool called Inkscape (similar to Adobe Illustrator. For DOT processing you can also use Omnigraffle (on Mac OS X). = validation_reflection If you have the [validation_reflection](http://github.com/redinger/validation_reflection/tree/master) plugin installed, your model ERD diagrams will properly distinguish between required and optional associations. Required associations are those that contain a *validates_presence_of*, *validates_existence_of*, *validates_associated*, or *validates_length_of* validation. = RailRoad as a rake task This version of railroad also works as a plugin. script/plugin install git://github.com/bryanlarsen/railroad.git `rake doc:diagrams` produces 'doc/diagrams/models.svg', 'doc/diagrams/controllers.svg', and 'doc/diagrams/states.svg' and 'doc/diagrams/lifecycle.svg' Update 'lib/railroad/tasks/diagrams.rake' to change the options for your diagrams. Running RailRoad as a rake task ensures that all of your plugins are loaded correctly, and may work when railroad from the command line fails. These rake tasks are also available if you install railroad as a gem. In that case, add to your top-level Rakefile: require 'railroad/tasks/diagrams' = Requirements RailRoad has been tested with Ruby 1.8.5 and Rails 1.1.6 to 1.2.3 applications. There is no additional requirements (nevertheless, all your Rails application requirements must be installed). In order to view/export the DOT diagrams, you'll need the processing tools from Graphviz. = Website and Project Home http://railroad.rubyforge.org = License RailRoad is distributed under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. = Author Javier Smaldone (javier -at- smaldone -dot- com -dot- ar, http://blog.smaldone.com.ar ) == Contributors Thomas Ritz http://www.galaxy-ritz.de Tien Dung http://github.com/tiendung Factory Design Labs http://github.com/factorylabs Mike Mondragon http://github.com/monde Tero Tilus http://github.com/terotil Bruno Michel http://github.com/nono