Class: Mdwa::Generators::AssociationGenerator

Inherits:
Rails::Generators::Base
  • Object
show all
Includes:
Rails::Generators::Migration
Defined in:
lib/generators/mdwa/association/association_generator.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args, &block) ⇒ AssociationGenerator

Returns a new instance of AssociationGenerator.



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# File 'lib/generators/mdwa/association/association_generator.rb', line 28

def initialize(*args, &block)

  super
  
  @association = MDWA::Generators::ModelAssociation.new(model1, model2, relation)

end

Instance Attribute Details

#attribute ⇒ Object

Returns the value of attribute attribute.



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# File 'lib/generators/mdwa/association/association_generator.rb', line 16

def attribute
  @attribute
end

#model1 ⇒ Object

Returns the value of attribute model1.



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# File 'lib/generators/mdwa/association/association_generator.rb', line 16

def model1
  @model1
end

#model2 ⇒ Object

Returns the value of attribute model2.



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# File 'lib/generators/mdwa/association/association_generator.rb', line 16

def model2
  @model2
end

#pending_migrations ⇒ Object

Returns the value of attribute pending_migrations.



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# File 'lib/generators/mdwa/association/association_generator.rb', line 16

def pending_migrations
  @pending_migrations
end

Class Method Details

.next_migration_number(dirname) ⇒ Object

Implement the required interface for Rails::Generators::Migration.



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# File 'lib/generators/mdwa/association/association_generator.rb', line 144

def self.next_migration_number(dirname) #:nodoc:
  if ActiveRecord::Base.timestamped_migrations
    Time.now.utc.strftime("%Y%m%d%H%M%S")
  else
    "%.3d" % (current_migration_number(dirname) + 1)
  end
end

Instance Method Details

#migrate ⇒ Object 



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# File 'lib/generators/mdwa/association/association_generator.rb', line 86

def migrate
  return nil if options.skip_migrations
    
  @pending_migrations = true
  case @association.relation.to_sym 
  when :belongs_to, :nested_one
    @table = @association.model1
    @field = @association.model2
    migration_template 'migrate/one_field.rb', "db/migrate/add_#{@field.singular_name.foreign_key}_to_#{@table.plural_name}.rb"
  when :has_and_belongs_to_many
    # only generates if table does not exist yet
    if Dir.glob("db/migrate/*create_#{many_to_many_table_name}.rb").count.zero?
      migration_template 'migrate/many_to_many.rb', "db/migrate/create_#{many_to_many_table_name}.rb"
    else
      @pending_migrations = false
    end
  else
    @pending_migrations = false
  end

end

#model ⇒ Object 



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# File 'lib/generators/mdwa/association/association_generator.rb', line 37

def model
  
  return nil if options.skip_models
  
  if @association.belongs_to?
    inject_into_class "app/models/#{@association.model1.space}/#{@association.model1.singular_name}.rb", @association.model1.model_class do
      ret = []
      ret << "\n\tbelongs_to :#{@association.model2.singular_name}, :class_name => '#{@association.model2.klass}'"
      ret << "\tattr_accessible :#{@association.model2.singular_name.foreign_key}"
      ret.join("\n")
    end
  end
  if @association.has_one?
    inject_into_class "app/models/#{@association.model1.space}/#{@association.model1.singular_name}.rb", @association.model1.model_class do
      "\n\thas_one :#{@association.model2.singular_name}, :class_name => '#{@association.model2.klass}'\n"
    end
  end
  if @association.has_many?
    inject_into_class "app/models/#{@association.model1.space}/#{@association.model1.singular_name}.rb", @association.model1.model_class do
      "\n\thas_many :#{@association.model2.plural_name}, :class_name => '#{@association.model2.klass}'\n"
    end
  end
  if @association.has_and_belongs_to_many?
    inject_into_class "app/models/#{@association.model1.space}/#{@association.model1.singular_name}.rb", @association.model1.model_class do
      "\n\thas_and_belongs_to_many :#{@association.model2.plural_name}, :join_table => :#{many_to_many_table_name}\n"
    end
    inject_into_class "app/models/#{@association.model2.space}/#{@association.model2.singular_name}.rb", @association.model2.model_class do
      "\n\thas_and_belongs_to_many :#{@association.model1.plural_name}, :join_table => :#{many_to_many_table_name}\n"
    end
  end
  if @association.nested_one?
    inject_into_class "app/models/#{@association.model1.space}/#{@association.model1.singular_name}.rb", @association.model1.model_class do
      # belongs_to
      # attr_accessible attributes
      # attr_nested_attributes 
      "\n\tbelongs_to :#{@association.model2.singular_name}, :class_name => '#{@association.model2.klass}'\n\tattr_accessible :#{@association.model2.singular_name}_attributes, :#{@association.model2.singular_name.foreign_key}\n\taccepts_nested_attributes_for :#{@association.model2.singular_name}, :allow_destroy => true\n"
    end
  end
  if @association.nested_many?
    inject_into_class "app/models/#{@association.model1.space}/#{@association.model1.singular_name}.rb", @association.model1.model_class do
      # has_many
      # attr_accessible attributes
      # attr_nested_attributes 
      "\n\thas_many :#{@association.model2.plural_name}, :class_name => '#{@association.model2.klass}', :dependent => :destroy\n\tattr_accessible :#{@association.model2.plural_name}_attributes\n\taccepts_nested_attributes_for :#{@association.model2.plural_name}, :allow_destroy => true\n"
    end
  end

end

#opposite ⇒ Object 



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# File 'lib/generators/mdwa/association/association_generator.rb', line 112

def opposite

  if options.with_opposite or options.ask
    # belongs_to
    if @association.belongs_to? and (options.with_opposite or ( options.ask and yes?("#{@association.model1.name} belongs to #{@association.model2.singular_name}. Create has_many association?") ))
      generate "mdwa:association #{@association.model2.raw} has_many #{@association.model1.raw} #{'--force' if options.force}"
    end

    # has_many
    if @association.has_many? and (options.with_opposite or ( options.ask and yes?("#{@association.model1.name} has many #{@association.model2.plural_name}. Create belongs_to association?") ))
      generate "mdwa:association #{@association.model2.raw} belongs_to #{@association.model1.raw} #{'--force' if options.force}"
    end
    
    # has_one
    if @association.has_one? and (options.with_opposite or ( options.ask and yes?("#{@association.model1.name} has one #{@association.model2.singular_name}. Create belongs_to association?") ))
      generate "mdwa:association #{@association.model2.raw} belongs_to #{@association.model1.raw} #{'--force' if options.force}"
    end

    # nested_many
    if @association.nested_many? and (options.with_opposite or ( options.ask and yes?("#{@association.model1.name} has many (nested) with #{@association.model2.plural_name}. Create belongs_to association?") ))
      generate "mdwa:association #{@association.model2.raw} belongs_to #{@association.model1.raw} #{'--force' if options.force}"
    end

    # nested_one          
    if @association.nested_one? and (options.with_opposite or ( options.ask and yes?("#{@association.model1.name} belongs nested to #{@association.model2.singular_name}. Create has_one association?") ))
      generate "mdwa:association #{@association.model2.raw} has_one #{@association.model1.raw} #{'--force' if options.force}"
    end

  end
end

#run_rake_db_migrate ⇒ Object 



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# File 'lib/generators/mdwa/association/association_generator.rb', line 108

def run_rake_db_migrate
  rake('db:migrate') if !options.skip_rake_migrate and @pending_migrations and yes? 'Run rake db:migrate?'
end