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我有一个表和表Writing之间的连接表。我的模型是UserExercise

class Writing < ActiveRecord::Base
    belongs_to :user
    belongs_to :exercise
    attr_accessible :writing_date, :exercise_id
end

我遵循了 has_many 的本指南：通过协会

我的桌子出生在

class CreateWritings < ActiveRecord::Migration
  def self.up
    create_table :writings do |t|
      t.integer :user_id
      t.integer :exercise_id
      t.date :writing_date
      t.timestamps
    end
  end
  def self.down
    drop_table :writings
  end
end

我的 writings_controller 是：

 # encoding: utf-8
 class WritingsController < ApplicationController
    def create
        @writing = current_user.writings.build(:exercise_id => params[:exercise_id], :writing_date => params[:writing_date])
       if @writing.save
            flash[:notice] = "added writing."
            redirect_to root_url
       else
            flash[:error] = "not added."
            redirect_to root_url
       end
    end
    def new
       @writing = current_user.writings.new
       @exercise = Exercise.all
       respond_to do |format|
          format.html # new.html.erb
          format.xml  { render :xml => @writing }
       end
    end
end

我的 _form.html.erb 就像

 <%= form_for(@writing) do |f| %>
  <div class="field">
   <%= f.text_field :writing_date %>
  </div>
  <div class="actions">
    <%= f.submit "add a writing", :class => "awesome custom red" %>
  </div>
 <% end %>

问题？数据未从 writing_date 保存到数据库。我正在使用 jQuery 和 datepicker。我跟着日志

Started POST "/writings" for 127.0.0.1 at 2012-05-19 19:55:23 +0300
  Processing by WritingsController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"q3xXMxVd9PsI346ph9CILLm8x74uCFokz3/2yOA0CeI=", "exercise_id"=>"7", "writing"=>{"writing_date"=>"2012-05-19"}, "commit"=>"add a writing"}

一切都好，但是...

AREL (0.3ms)  INSERT INTO "writings" ("user_id", "exercise_id", "writing_date", "created_at", "updated_at") VALUES (1, 7, NULL, '2012-05-19 16:55:23.719410', '2012-05-19 16:55:23.719410')

writing_date一片空白。

4

2 回答 2

2

我认为您需要将 datepicker 配置为另一种格式。例如：

$(".datepicker").datepicker({
            dateFormat : "dd MM yy"
});

Ruby 日期格式可以在这里找到：http ://www.ruby-doc.org/stdlib-1.9.3/libdoc/date/rdoc/Date.html 和相关问题：Rails 3.1 text_field form helper and jQuery datepicker date format

于 2012-05-19T18:02:08.867 回答
0

根据您的参数，"writing"=>{"writing_date"=>"2012-05-19"},"writing_date"在"writing"哈希下，但您仅传递params[:writing_data]参数；这就是为什么它不起作用。

@writing = current_user.writings.build(:exercise_id => params[:exercise_id], :writing_date => params[:writing_date])

而不是 params[:writing_date] 你应该使用 params[:writing][:writing_date]

因此，您必须通过以下方式对其进行更改：

@writing = current_user.writings.build(:exercise_id => params[:exercise_id], :writing_date => params[:writing][:writing_date])
于 2012-05-26T18:08:59.667 回答