ruby-on-rails - 覆盖DeviseController基类-Rails 4，Devise 3

我试图覆盖Devise方法 set_flash_message 。 Devise文档介绍了如何override controllers for the various submodules。

但是，此特定方法位于 DeviseController (所有模块的父类)中。

该文档(Wiki和内联)都没有说明如何实现此目标，因此我不确定如何最好地进行。我相信最好的方法是简单地重新打开该类并根据需要修改该方法，为此我在/lib中放置了一个文件。但是，似乎是在Devise之前加载的，从而导致错误喷出。

NameError in Devise::RegistrationsController#new
undefined local variable or method `require_no_authentication' for #<Devise::RegistrationsController>

DeviseController的复杂父级定义也可能产生净负面影响:

class DeviseController < Devise.parent_controller.constantize

有什么想法吗？

最佳答案

我相信这是重写Devise Controller 的语法:

class RegistrationsController <  Devise::RegistrationsController

如果您收到方法错误，则需要记住这不会完全覆盖 Controller -您的方法将从“主要”的devise Controller 委派给您，因此您可以使用以下方法:

def method
    super
    your_code_here
end

更新

class SessionsController < DeviseController
  prepend_before_filter :require_no_authentication, :only => [ :new, :create ]
  prepend_before_filter :allow_params_authentication!, :only => :create
  prepend_before_filter { request.env["devise.skip_timeout"] = true }

  prepend_view_path 'app/views/devise'

  # GET /resource/sign_in
  def new
    self.resource = resource_class.new(sign_in_params)
    clean_up_passwords(resource)
    respond_with(resource, serialize_options(resource))
  end

  # POST /resource/sign_in
  def create
    self.resource = warden.authenticate!(auth_options)
    set_flash_message(:notice, :signed_in) if is_navigational_format?
    sign_in(resource_name, resource)

    respond_to do |format|
        format.json { render :json => {}, :status => :ok }
        format.html { respond_with resource, :location => after_sign_in_path_for(resource) }
    end
  end

  # DELETE /resource/sign_out
  def destroy
    redirect_path = after_sign_out_path_for(resource_name)
    signed_out = (Devise.sign_out_all_scopes ? sign_out : sign_out(resource_name))
    set_flash_message :notice, :signed_out if signed_out && is_navigational_format?

    # We actually need to hardcode this as Rails default responder doesn't
    # support returning empty response on GET request
    respond_to do |format|
      format.all { head :no_content }
      format.any(*navigational_formats) { redirect_to redirect_path }
    end
  end


  protected

  def sign_in_params
    devise_parameter_sanitizer.sanitize(:sign_in)
  end

  def serialize_options(resource)
    methods = resource_class.authentication_keys.dup
    methods = methods.keys if methods.is_a?(Hash)
    methods << :password if resource.respond_to?(:password)
    { :methods => methods, :only => [:password] }
  end

  def auth_options
    { :scope => resource_name, :recall => "#{controller_path}#new" }
  end
end

关于ruby-on-rails - 覆盖DeviseController基类-Rails 4，Devise 3，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/21769980/