使用Rails保存之前将字符串转换为日期 [英] Converting String to Date before save with Rails

问题描述

Ruby的新手，我已经被困了几个小时了.搜索无处不在，找不到答案.

Very new to Ruby and I've been stuck for hours. Searching everywhere and can't find an answer.

所以我正在使用bootstrap datepicker作为rails gem.

So I'm using the bootstrap datepicker for rails gem.

因为我更改了日期选择器的日期格式，所以它不会存储在数据库中.猜测这是因为simple_form输入被用作字符串，以避免由simple_form应用默认的日期选择输入.

Because I've changed the date format of the datepicker, it won't store in the DB. Guessing this is because the simple_form input is being used as a string to avoid the default date selection inputs applied by simple_form.

我的问题是:如何将字符串"06/18/2013"​​修改/转换为保存到数据库之前的日期?最好由控制器来处理吗?

我的控制器:

# PUT /events/1
# PUT /events/1.json
def update
  @event = Event.find(params[:id])

  # Ugghhhh I need help
  # @event.event_date = Date.parse(params[:event_date]).to_date

  respond_to do |format|
    if @event.update_attributes(params[:event])
      format.html { redirect_to @event, :notice => 'Event was successfully updated.' }
      format.json { head :no_content }
    else
      format.html { render :action => "edit" }
      format.json { render :json => @event.errors, :status => :unprocessable_entity }
    end
  end
end

数据库架构:

  create_table "events", :force => true do |t|
    t.string   "event_name"
    t.string   "event_location"
    t.date     "event_date"
    t.time     "event_time"
    t.text     "event_content"
    t.datetime "created_at",                       :null => false
    t.datetime "updated_at",                       :null => false
    t.integer  "user_id"
    t.boolean  "approved",       :default => true
    t.integer  "category_id"
  end

这是服务器日志:

  Started PUT "/events/1" for 127.0.0.1 at 2013-06-14 02:37:15 -0700
  Processing by EventsController#update as HTML
    Parameters: {"utf8"=>"✓", "authenticity_token"=>"RYMdJ0lFmvG0+nVIsTtJXu5fyD/L3/WAKsk9FX6WWgo=", "event"=>{"user_id"=>"1", "category_id"=>"3", "event_name"=>"A Event Name", "event_location"=>"Event Location", "event_date"=>"06/13/2013", "event_time(1i)"=>"2000", "event_time(2i)"=>"1", "event_time(3i)"=>"1", "event_time(4i)"=>"02", "event_time(5i)"=>"18", "event_content"=>"First night"}, "commit"=>"Update Event", "id"=>"1"}
    User Load (0.2ms)  SELECT "users".* FROM "users" WHERE "users"."id" = 1 LIMIT 1
    Event Load (0.1ms)  SELECT "events".* FROM "events" WHERE "events"."id" = ? LIMIT 1  [["id", "1"]]
     (0.0ms)  begin transaction
     (0.0ms)  commit transaction
  Redirected to http://localhost:3000/events/1
  Completed 302 Found in 4ms (ActiveRecord: 0.3ms)

推荐答案

您可以在控制器中使用strptime.

You can use strptime in the controller.

DateTime.strptime("06/18/2013", "%m/%d/%Y")

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