Question

查看：

  <p>
    <%= form.label :FirstName %>
    <%= form.text_field :FirstName %> &nbsp
    <%= form.label :LastName %>
    <%= form.text_field :LastName %>
  </p>
  <br>
  <%= form.label :PhoneNo %>
    <%= form.text_field :PhoneNo %>

  <p>
    <%= form.label :Lane1 %>
    <%= form.text_field :Lane1 %> &nbsp
    <%= form.label :Lane2 %>
    <%= form.text_field :Lane2 %> <br>
    <%= form.label :ZipCode %>
    <%= form.text_field :zipcode %> &nbsp
    <%= form.label :State %>

    <%= form.select(:State, options_for_select([['Alaska','AK'],['Alabama','AL'], ['Arkansas','AR'],['Arizona','AZ'],['California','CA'],['Colorado','CO'],['Connecticut','CT'],['District of Columbia','DC'],['Delaware','DE'],['Florida','FL'],['Georgia','GA'],['Hawaii','HI'],['Iowa','IA'],['Idaho','ID'],['Illinois','IL'],['Indiana','IN'],['Kansas','KS'],['Kentucky','KY'],['Louisiana','LA'],['Massachusetts','MA'],['Maryland','MD'],['Maine','ME'],['Michigan','MI'],['Minnesota','MN'],['Missouri','MO'],['Mississippi','MS'],['Montana','MT'],['North Carolina','NC'],['North Dakota','ND'],['Nebraska','NE'],['New Hampshire','NH'],['New Jersey','NJ'],['New Mexico','NM'],['Nevada','NV'],['New York','NY'],['Ohio','OH'],['Oklahoma','OK'],['Oregon','OR'],['Pennsylvania','PA'],['Rhode Island','RI'],['South Carolina','SC'],['South Dakota','SD'],['Tennessee','TN'],['Texas','TX'],['Utah','UT'],['Virginia','VA'],['Vermont','VT'],['Washington','WA'],['Wisconsin','WI'],['West Virginia','WV'],['Wyoming','WY']])) %>

    <%= form.label :County %>
    <%= form.text_field :County %> 
  </p>

  <p>
    <%= form.submit %>
  </p>

<% end %>

（第1行，第2行，邮政编码和国家/地区未保存）

控制器：

class CustomersController < ApplicationController
    def index
        @customers = Customer.all
    end

    def show
       @customer = Customer.find(params[:id])
    end

    def new 
    end

    def create
        @customer = Customer.new(customer_params)
         @customer.save
        redirect_to @customer
    end

    private 
        def customer_params
            params.require(:customer).permit(
               :FirstName, :LastName, :PhoneNo, :Line1, :Line2, :ZipCode, :State, :Country)
        end
    end

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Answer 1

在您的customer_params方法中，您允许：Line1，：Line2，：ZipCode 但在你的视图中它是：Lane1，：Lane2，：zipcode 所以它不接受它们。你可以用两种类型修复它。

使用相同的名称。
您可以解决此问题（仅当您要接受所有属性时才提及）（脏的方式）

def customer_params
```
   params.require(:customer).permit!
```
端

Answer 2

试试这个：

<p>
    <%= form.label :FirstName %>
    <%= form.text_field :FirstName %> &nbsp
    <%= form.label :LastName %>
    <%= form.text_field :LastName %>
  </p>
  <br>
  <%= form.label :PhoneNo %>
    <%= form.text_field :PhoneNo %>

  <p>
    <%= form.label :Line1 %>
    <%= form.text_field :Line1 %> &nbsp
    <%= form.label :Line2 %>
    <%= form.text_field :Line2 %> <br>
    <%= form.label :ZipCode %>
    <%= form.text_field :ZipCode %> &nbsp
    <%= form.label :State %>

    <%= form.select(:State, options_for_select([['Alaska','AK'],['Alabama','AL'], ['Arkansas','AR'],['Arizona','AZ'],['California','CA'],['Colorado','CO'],['Connecticut','CT'],['District of Columbia','DC'],['Delaware','DE'],['Florida','FL'],['Georgia','GA'],['Hawaii','HI'],['Iowa','IA'],['Idaho','ID'],['Illinois','IL'],['Indiana','IN'],['Kansas','KS'],['Kentucky','KY'],['Louisiana','LA'],['Massachusetts','MA'],['Maryland','MD'],['Maine','ME'],['Michigan','MI'],['Minnesota','MN'],['Missouri','MO'],['Mississippi','MS'],['Montana','MT'],['North Carolina','NC'],['North Dakota','ND'],['Nebraska','NE'],['New Hampshire','NH'],['New Jersey','NJ'],['New Mexico','NM'],['Nevada','NV'],['New York','NY'],['Ohio','OH'],['Oklahoma','OK'],['Oregon','OR'],['Pennsylvania','PA'],['Rhode Island','RI'],['South Carolina','SC'],['South Dakota','SD'],['Tennessee','TN'],['Texas','TX'],['Utah','UT'],['Virginia','VA'],['Vermont','VT'],['Washington','WA'],['Wisconsin','WI'],['West Virginia','WV'],['Wyoming','WY']])) %>

    <%= form.label :County %>
    <%= form.text_field :County %> 
  </p>

  <p>
    <%= form.submit %>
  </p>

Rails：表单中的所有字段都不保存在rails db中，而是显示nil的少数字段

2 个答案: