Rails：attr_accessor 和 attr_accessible 之间的区别

发布于 2024-11-28 06:20:51 字数 942 浏览 1 评论 0原文

有什么区别？另外，为什么这不起作用：

未设置诸如 base_path 之类的变量。

class Cvit < ActiveRecord::Base
  attr_accessible :species,:program,:textup,:e_value,:filter,:min_identity,:cluster_dist,:fileup_file_name
  attr_accessor :base_path, :fa_file, :text_file, :dbase, :source, :bl_file, :bl_sorted, :gff_file, :cvt_file, :db, :overlay_coords_gray

  def initilize(*args)
     super(*args)
  end

  def cvitSetup()
    self.base_path = "blast_cvit/"
    self.fa_file = "input.fa"
    .
    .
  end
end

在 Rails 控制台中，属性设置正确，但是当我尝试执行以下操作时：

controller:

def show
    @cvit = Cvit.find(params[:id])
    @cvit.cvitSetup()
    @cvit.blast()
    @cvit.generateGff()
    @cvit.generateCvitImage()


    respond_to do |format|
      format.html # show.html.erb
      format.xml  { render :xml => @cvit }
    end
  end

在我看来，我引用了 @cvit.some_attribute.html_safe 但该属性为 null，所以我收到错误。有什么想法吗？

原文

What is the difference? Also, why does this not work:

The variables such as base_path are not being set.

class Cvit < ActiveRecord::Base
  attr_accessible :species,:program,:textup,:e_value,:filter,:min_identity,:cluster_dist,:fileup_file_name
  attr_accessor :base_path, :fa_file, :text_file, :dbase, :source, :bl_file, :bl_sorted, :gff_file, :cvt_file, :db, :overlay_coords_gray

  def initilize(*args)
     super(*args)
  end

  def cvitSetup()
    self.base_path = "blast_cvit/"
    self.fa_file = "input.fa"
    .
    .
  end
end

in the rails console the attributes get set correctly however when I try to do this:

controller:

def show
    @cvit = Cvit.find(params[:id])
    @cvit.cvitSetup()
    @cvit.blast()
    @cvit.generateGff()
    @cvit.generateCvitImage()


    respond_to do |format|
      format.html # show.html.erb
      format.xml  { render :xml => @cvit }
    end
  end

and in my view I reference @cvit.some_attribute.html_safe but that attribute is null so I get an error. Any ideas?

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明媚殇 2024-12-05 06:20:51

attr_accessor 为指定属性创建 getter method.attribute 和 setter method.attribute=。

attr_accessible 来自 ActiveRecord::Base 并且“指定可以通过批量分配设置的模型属性白名单。”请参阅此处的文档和示例。

编辑：

至于你的第二个问题，我不知道。我尝试了这个虚拟代码并且它起作用了：

class Test
attr_accessor :base_path, :fa_file
  def cvitSetup()
    self.base_path = "blast_cvit/"
    self.fa_file = "input.fa"
  end
end
t = Test.new
t.cvitSetup
p t.base_path
#=> "blast_cvit/"

您确定您正确实例化了您的类吗？

attr_accessor creates the getter method.attribute and setter method.attribute= for the specified attributes.

attr_accessible is from ActiveRecord::Base and "Specifies a white list of model attributes that can be set via mass-assignment." See documentation and example here.

EDIT:

As for your second question, I don't know. I tried this dummy code and it worked:

class Test
attr_accessor :base_path, :fa_file
  def cvitSetup()
    self.base_path = "blast_cvit/"
    self.fa_file = "input.fa"
  end
end
t = Test.new
t.cvitSetup
p t.base_path
#=> "blast_cvit/"

Are you sure that you properly instantiated your class?

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