使用ActiveModel验证Rails

Question

我一直在阅读文档以获得ActiveRecord验证ActiveModel.出于某种原因,我没有看到任何返回的验证结果.

我有一组模型,ActiveRecord它们通过一个将位于Rails后面的自定义API连接而不是接口.

该模型:

class ApiObject < ApiConnector
  include ActiveModel::Validations
  attr_accessor :fieldName

  validates :fieldName, :presence => true
  def save
    #save method implementation
  end
end

控制者:

def create
  @apiObject = ApiObject.new(params[:api_object])

  respond_to do |format|
    if @apiObject.save
      format.html { redirect_to(@apiObject, :notice => 'User was successfully created.') }
      format.xml  { render :xml => @apiObject, :status => :created, :location => @apiObject }
    else
      format.html { render :action => "new" }
      format.xml  { render :xml => @apiObject.errors, :status => :unprocessable_entity }
    end
  end
end

表格:

<%= form_for :api_object, :url => '/apiobjectcontroller/' do |f| %>
    <%= f.label :fieldName, 'Field Name' %>
    <%= f.text_field :fieldName %>
    <%= f.submit 'Create'%>
<% end %>

我遵循这里列出的代码:Rails ActiveModel验证

该方法正确返回到表单,因为@ apiObject.save返回false,但没有返回验证响应.我已经检查了标记,并且没有返回通常的rails验证结果.我错过了什么？

Answer 1

我有类似的代码,但我的类中有一个初始化方法.也许你的模型应该是:

class ApiObject < ApiConnector
  include ActiveModel::Validations

  validates :fieldName, :presence => true

  attr_accessor :fieldName

  def initialize(fieldName)
    @first_name = fieldName
  end

  def save
    return false unless valid?
    # save method implementation to go here
    # ...
    true # if save successful, otherwise, false
  end
end

如果上面的工作,并且你最终在初始化程序中分配了很多属性,那么你可以使用这个老技巧:

def initialize(attributes = {})
  attributes.each do |name, value|
    instance_variable_set "@#{name}", value
  end
end

编辑:添加了有效的电话？在保存实现中,以便填写错误集合.