added migrations only option

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    yaddl (0.0.4)
+    yaddl (0.0.5)
       rails (~> 4.0.0)
 
 GEM

lib/tasks/yaddl.rake

@@ -11,7 +11,12 @@ namespace :yaddl do
     y = Yaddl::Generator::load("#{Rails.root}/db/*.yaddl")
     y.generate("--force --no-assets --skip-migration --helpers=false")
   end
-  desc "Regenerate models, skips migrations"
+  desc "Regenerate migrations only, skips models"
+  task :migrations do
+    y = Yaddl::Generator::load("#{Rails.root}/db/*.yaddl")
+    y.generate("--migrations-only")
+  end
+  desc "Regenerate models only, skips migrations"
   task :models do
     y = Yaddl::Generator::load("#{Rails.root}/db/*.yaddl")
     y.generate("--no-scaffolds")

lib/yaddl.rb

@@ -1,5 +1,8 @@
 module Yaddl
   require "yaddl/railtie" if defined?(Rails)
+
+  require "rails"
+  require "rails/generators/migration"
 class Generator
 
   attr_accessor :markup
@@ -92,8 +95,32 @@ def scaffolds(options = "")
       sc = "rails g scaffold #{name} " + model['attributes'].reject{ | k, v| v['hidden'] }.map{ |k,v| k + ':' + v['type'].sub(/yaml|hash|object|cache/i,"text") }.join(' ') + " " + model['belongs_to'].reject{ | k, v| v['hidden'] }.map{ |k,v| k + ':references' + (v['polymorphic'] ? "{polymorphic}" : "") }.join(' ')
       puts("form: #{sc}") unless @quiet
       `#{sc} #{options.gsub("--force","")} --skip --no-migrations`
-    end if !options.include?("--no-scaffold")
+    end if !options.include?("--no-scaffold") && !options.include?("--migrations-only")
 
+    models.reject{ |k,v| k[0] == "@"}.each do |name,model|
+      model['has_one'] ||= {}
+      model['has_many'] ||= {}
+      model['belongs_to'] ||= {}
+      model['attributes'] ||= {}
+      model['methods'] ||= {}
+      model['code'] ||= {}
+      model['code']['top'] ||= []
+      model['code']['before'] ||= []
+      model['code']['after'] ||= []
+      model['code']['controller'] ||= []
+      sc = "rails g model #{name} " + model['attributes'].map{ |k,v| k + ':' + v['type'].sub(/yaml|hash|object|cache/i,"text") }.join(' ') + " " + model['belongs_to'].map{ |k,v| k + ':references' + (v['polymorphic'] ? "{polymorphic}" : "") }.join(' ')
+      puts("migration: cd #{Rails::root} && #{sc} --skip")# unless @quiet
+      `cd #{Rails::root} && #{sc} --skip --no-test-framework`
+    end if options.include?("--migrations-only")
+
+    if options.include?("--migrations-only")
+      cleanup(ddl: true, mixins: false)
+      File.open("#{Rails.root}/db/schema.yaml", "w") do |f|
+        f.write models.to_yaml
+      end
+      puts("","--- DATA #{models.to_yaml}","") unless @quiet
+      return
+    end
 
     models.reject{ |k,v| k[0] == "@"}.each do |name,model|
       model['has_one'] ||= {}

lib/yaddl/version.rb

@@ -1,3 +1,3 @@
 module Yaddl
-  VERSION = "0.0.5"
+  VERSION = "0.0.6"
 end

test/yaddl_test.rb

@@ -11,6 +11,7 @@ class YaddlTest < ActiveSupport::TestCase
   =to_s{name}
   *RelatedModel"
     y.generate("--no-scaffolds --quiet")
+    y.generate("--migrations-only --quiet")
     assert_file "app/models/test_model.rb", "class TestModel < ActiveRecord::Base
   has_many :related_models, dependent: :destroy