Question

我的问题是我正在检查form_for的验证，其中包含一个嵌套的fields_for，以访问用户输入基本信息的Address表。如果任何信息不正确，则无法加载回页面。我收到的错误是......

托运人中的NoMethodError #create

undefined method 'addcheck' for #<Address:0x9fb9664>

我觉得这是因为复选框不是地址表中的变量，就像fields_for中的其他a.variables一样。它用于简单地将地址添加到Contacts表中（如果已选中）。我将添加 - - - 以指示错误的位置

发生错误的Shippers.new.html的视图是

<%= fields_for :address do |a| %>
<div class="row"> 

<div class="form-group col-xs-12 col-sm-12 col-md-9 col-lg-9">
    <label>Street Address <p class="help-block" style= "display:inline;" >  You can drag the marker to property position</p></label>
    <div>   
    <span id="latitude" class="label label-default"></span> <span id="longitude" class="label label-default"></span>
    </div>  


    <%=  a.text_field :street_address, :class=> "form-control", :id=> "address", :placeholder=> "Enter Starting Location", :autocomplete=> "on" %> 

</div>   
<div class="col-xs-12 col-sm-12 col-md-3 col-lg-3">
    <div class="form-group">
        <label>Add Contact?</label>
-----------------------------------------------------
        <div class="checkbox custom-checkbox">
            <label><%= a.check_box :addcheck %>
            <span class="fa fa-check"></span></label>
        </div>         
------------------------------------------------------
    </div>
</div>

我正在验证模型中的所有信息......

class CurrentPackage < ActiveRecord::Base

self.primary_key = :shipment_id
belongs_to      :address, foreign_key: "address_start"

validates :title, :presence => true
validates :total_cost, :presence => true
validates :weight, :presence => true
validates :dimensions, :presence => true
validates :user_id, :presence => true

我的托运人控制器中的创建操作是......

def create

    @address = Address.where({street_address: params[:address][:street_address], city: params[:address][:city], state: params[:address][:state], zip_code: params[:address][:zip_code]}).first
    @shippers = CurrentPackage.new( user_params )
    @shippers.user_id = current_user
    @shippers.time_created = Time.now

    @address2 = Address.where({street_address: params[:address][:street_address2], city: params[:address][:city2], state: params[:address][:state2], zip_code: params[:address][:zip_code2]}).first


    if (!!@address) == false
        @address = Address.new(street_address: params[:address][:street_address], city: params[:address][:city], state: params[:address][:state], zip_code: params[:address][:zip_code])
        @address.save!
    end

    if (!!@address2) == false
        @address2 = Address.new(street_address: params[:address][:street_address2], city: params[:address][:city2], state: params[:address][:state2], zip_code: params[:address][:zip_code2])
        @address2.save!
    end

    @temp = @address.address_id 
    @shippers.address_start = @temp     

    @temp2 = @address2.address_id   
    @shippers.address_end = @temp2      

    #@shippers.save!      #replacing
    ------------------------------------------------------
    if @shippers.save
        #redirect_to @shippers
        redirect_to shippers_index_path

    else
        render shippers_new_path         #addcheck fails
        #render @shippers
        #redirect_to shippers_new_path   #works but loses data      
        #render 'new'                    #addcheck fails

    end
    --------------------------------------------------
    if (params[:address][:addcheck] == "1")

        if (!!Contact.where({user_id: current_user, contact: @temp}).first) == false
            hmm = Contact.new(user_id: current_user,contact: @temp)
            hmm.save!
        end
    end
    if (params[:address][:addcheck2] == "1")
        if (!!Contact.where({user_id: current_user, contact: @temp2}).first) == false
            hmm2 = Contact.new(user_id: current_user, contact: @temp2)
            hmm2.save!
        end
    end 

end

我的 routes.rb 文件看起来像

get "shippers/isdriver"
get "shippers/index"
get "shippers/show"
get "shippers/update"
post "shippers/create"
get "shippers/new"
get "shippers/destroy"

devise_for :users
get "home/index"

resources :addcheck

我添加了资源：addcheck因为我看到另一个stackoverflow帖子说它适用于他们，但不适合我。

重申一下，只有在表格不正确的情况下才会发生这种情况，进入if @ shippers.save的else条件，然后再次尝试加载新页面并中断。

任何帮助都会非常感激：D

*****附加信息******* 我拿出了addcheck rails line，然后再次运行，但出于同样的原因打破了street_address2的下一个字段，因为它实际上不是任何模型中的变量，只是占位符。

Answer 1

我认为您应该将支票与地址模型<%= a.check_box :addcheck %>相关联，而不是将支票与地址模型<%= check_box_tag(:addcheck) %>联系起来namespace Ws.Models { public class samplemodelDTO { [Key] public int id { set; get; } public string Productname { get; set; } public int Productquantity { get; set; } public string ProductReview { get; set; } } }

Answer 2

在将属性传递给模型之前删除该属性

m <- matrix(c(1,1,1,0,2,2,13,0,3,3,3,0,4,4,4,1),4,byrow=T);
m;
##      [,1] [,2] [,3] [,4]
## [1,]    1    1    1    0
## [2,]    2    2   13    0
## [3,]    3    3    3    0
## [4,]    4    4    4    1
m[apply(m[,-ncol(m)]==m[,1],1,all)&m[,ncol(m)]==0,];
##      [,1] [,2] [,3] [,4]
## [1,]    1    1    1    0
## [2,]    3    3    3    0

托运人中的NoMethodError＃在渲染controller_new_path之后创建

2 个答案: