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