Module: ViewMapper::HasManyChildModels

Included in:
HasManyExistingView, HasManyView
Defined in:
lib/view_mapper/has_many_child_models.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#child_models ⇒ Object (readonly)

Returns the value of attribute child_models.



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# File 'lib/view_mapper/has_many_child_models.rb', line 4

def child_models
  @child_models
end

Instance Method Details

#add_child_model_actions(m) ⇒ Object 



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# File 'lib/view_mapper/has_many_child_models.rb', line 46

def add_child_model_actions(m)
  m.directory(File.join('test/fixtures', class_path))
  m.template   'model.rb',     File.join('app/models', class_path, "#{file_name}.rb")
  m.template   'unit_test.rb', File.join('test/unit',  class_path, "#{file_name}_test.rb")
  unless options[:skip_fixture]
    m.template 'fixtures.yml', File.join('test/fixtures', "#{table_name}.yml")
  end
  unless options[:skip_migration]
    m.migration_template 'migration.rb',
                         'db/migrate',
                         :assigns => { :migration_name => "Create#{class_name.pluralize.gsub(/::/, '')}" },
                         :migration_file_name => "create_#{file_path.gsub(/\//, '_').pluralize}"
  end
end

#add_child_model_forms(m) ⇒ Object 



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# File 'lib/view_mapper/has_many_child_models.rb', line 24

def add_child_model_forms(m)
  m.template(
    "view_show.html.erb",
    File.join('app/views', controller_class_path, controller_file_name, "show.html.erb"),
    { :assigns => { :child_models => child_models } }
  )
  m.template(
    "view_form.html.erb",
    File.join('app/views', controller_class_path, controller_file_name, "_form.html.erb")
  )
  child_models.each do |child_model|
    m.template(
      "view_child_form.html.erb",
      File.join('app/views', controller_class_path, controller_file_name, "_#{child_model.name.underscore}.html.erb"),
      { :assigns => { :child_model => child_model } }

    )
  end
  m.file('nested_attributes.js', 'public/javascripts/nested_attributes.js')
  m
end

#add_child_models_manifest(m) ⇒ Object 



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# File 'lib/view_mapper/has_many_child_models.rb', line 18

def add_child_models_manifest(m)
  add_child_model_actions(m) if valid && !view_only?
  add_child_model_forms(m) if valid
  m
end

#find_child_models ⇒ Object 



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# File 'lib/view_mapper/has_many_child_models.rb', line 65

def find_child_models
  if view_param
    view_param.split(',').collect { |param| ModelInfo.new(param.singularize) }
  elsif view_only?
    model.child_models
  else
    []
  end
end

#is_child_model_action?(action) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/view_mapper/has_many_child_models.rb', line 6

def is_child_model_action?(action)
  is_model_dependency_action(action) || is_view_show(action)
end

#is_model_dependency_action(action) ⇒ Object 



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# File 'lib/view_mapper/has_many_child_models.rb', line 10

def is_model_dependency_action(action)
  action[0] == :dependency && action[1].include?('model')
end

#is_view_show(action) ⇒ Object 



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# File 'lib/view_mapper/has_many_child_models.rb', line 14

def is_view_show(action)
  action[0] == :template && action[1].include?('view_show.html.erb')
end

#validate_child_model(child_model, parent_model_name, parent_model) ⇒ Object 



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# File 'lib/view_mapper/has_many_child_models.rb', line 90

def validate_child_model(child_model, parent_model_name, parent_model)
  if !child_model.valid?
    logger.error child_model.error
    return false
  elsif parent_model && !parent_model.accepts_nested_attributes_for?(child_model)
    logger.warning "Model #{parent_model.name} does not accept nested attributes for model #{child_model.name}."
    return false
  else
    if child_model.has_many?(parent_model_name.pluralize) || child_model.has_and_belongs_to_many?(parent_model_name.pluralize)
      true
    elsif !child_model.belongs_to?(parent_model_name)
      logger.warning "Model #{child_model.name} does not contain a belongs_to association for #{parent_model_name}."
      return false
    elsif !child_model.has_foreign_key_for?(parent_model_name)
      logger.warning "Model #{child_model.name} does not contain a foreign key for #{parent_model_name}."
      return false
    end
  end
  true
end

#validate_child_model_associations(child_model) ⇒ Object 



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# File 'lib/view_mapper/has_many_child_models.rb', line 111

def validate_child_model_associations(child_model)
  if child_model.belongs_to?(class_name)
    true
  else
    child_model.has_many?(class_name.pluralize) || child_model.has_and_belongs_to_many?(class_name.pluralize)
  end
end

#validate_child_models ⇒ Object 



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# File 'lib/view_mapper/has_many_child_models.rb', line 75

def validate_child_models
  cms = child_models
  if cms.empty?
    if view_only?
      logger.error "No has_many associations exist in class #{model.name}."
    else
      logger.error "No has_many association specified."
    end
    return false
  end
  cms.reject! { |child_model| !validate_child_model(child_model, class_name, view_only? ? model : nil) }
  @child_models = cms
  !cms.empty?
end