我使用的是API而不是数据库,所以我没有使用ActiveRecord而是使用ActiveModel(我大多喜欢这里：railscasts.com/episodes/219-active-model)
事情是,当我尝试编辑一个项目(在我的情况下是一个停车场)时,表单的动作仍然是创建的动作而不是更新.
所以当我继续/停车/ 2 /编辑编辑停车时,表格仍然是：
<form accept-charset="UTF-8" action="/parkings" class="form-horizontal" id="new_parking" method="post">
当它应该更像是放置隐藏字段和停车场/ 2作为动作：
<form accept-charset="UTF-8" action="/parkings/2" class="form-horizontal" id="edit_parking" method="post"><div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="✓" /><input name="_method" type="hidden" value="put" />
谁知道方法和方法在哪里form_for的动作是根据路线设定的？我正在尝试做的就是将ActiveRecord与数据库一起使用.
这是一些代码：
_form.html.erb
<%= form_for(@parking,:html => { :class => "form-horizontal" }) do |f| %>
...
<% end %>
edit.html.erb& new.html.erb,简单地说
<%= render 'form' %>
调节器
class ParkingsController < ApplicationController
def index
@parkings = Parse.get("Parking")
respond_to do |format|
format.html
format.json { render :json => @parking }
end
end
def new
@parking = Parking.new
respond_to do |format|
format.html
format.json { render :json => @parking }
end
end
def edit
@parking = Parking.find(params[:id])
respond_to do |format|
format.html
format.json { render :json => @parking }
end
end
def create
@parking = Parking.new(params[:parking])
if (@parking.save)
flash[:success] = "Parking was just added!"
redirect_to :action => "new"
else
render :action => "new"
end
end
def update
# Testing
parking = Parse.get("Parking",params[:id])
parking.delete("updatedAt")
parking["name"] = params[:parking][:name]
parking.save
redirect_to :action => "index"
end
模型
class Parking
include ActiveModel::Validations
include ActiveModel::Conversion
extend ActiveModel::Naming
attr_accessor :name,:address,:city,:longitude,:latitude,:contributor_name,:contributor_email
validates_presence_of :name,:latitude
@id = nil
def initialize(attributes = {})
attributes.each do |name,value|
send("#{name}=",value)
end
end
def self.find(id)
@id = id
raw = Parse.get("Parking",@id.to_s)
parking = Parking.new
parking.name = raw["name"]
parking.address = raw["address"]
parking.city = raw["city"]
parking.longitude = raw["location"]["longitude"]
parking.latitude = raw["location"]["latitude"]
parking.contributor_name = raw["contributorName"]
parking.contributor_email = raw["contributorEmail"]
return parking
end
def save
if (!valid?)
return false
else
parking = Parse::Object.new("Parking")
data =
{
:longitude => longitude.to_f,:latitude => latitude.to_f
}
point = Parse::GeoPoint.new(data)
parking["location"] = point
parking["name"] = name
parking["address"] = address
parking["city"] = city
parking["contributorName"] = contributor_name
parking["contributorEmail"] = contributor_email
if (parking.save)
return true
end
end
end
def persisted?
false
end
end
请注意,创建工作正常,如果我使用Web Inspector或Firebug以形式action =“”添加我的停车ID,并添加：method => “put”在我的form_for中,我的记录成功更新.
这里真正的问题实际上是form_for action&我正在编辑停车时没有得到更新的方法,如果我要添加一个新的停车库仍然存在.
我还在学习Rails,很抱歉,如果有些信息不清楚！
谢谢！
—解决方案—
坚持？不应该只返回false,我的模型需要定义一个返回对象id的方法(所以他们可以更新action =“”)所以这是我更新的模型：
class Parking
include ActiveModel::Validations
include ActiveModel::Conversion
extend ActiveModel::Naming
attr_accessor :objectId,:name,value)
end
end
def self.find(id)
raw = Parse.get("Parking",id.to_s)
parking = Parking.new
parking.objectId = id
parking.name = raw["name"]
parking.address = raw["address"]
parking.city = raw["city"]
parking.longitude = raw["location"]["longitude"]
parking.latitude = raw["location"]["latitude"]
parking.contributor_name = raw["contributorName"]
parking.contributor_email = raw["contributorEmail"]
return parking
end
def save
if (!valid?)
return false
else
parking = Parse::Object.new("Parking")
data =
{
:longitude => longitude.to_f,:latitude => latitude.to_f
}
point = Parse::GeoPoint.new(data)
parking["location"] = point
parking["name"] = name
parking["address"] = address
parking["city"] = city
parking["contributorName"] = contributor_name
parking["contributorEmail"] = contributor_email
if (parking.save)
return true
end
end
end
def update_attributes(aParking)
parking = Parse.get("Parking",@id.to_s)
parking.delete("updatedAt")
parking["name"] = aParking["name"]
parking.save
return true
end
def destroy
parking = Parse.get("Parking",@id)
#parking.parse_delete
end
def id
return self.objectId
end
def persisted?
!(self.id.nil?)
end
end
解决方法
我认为您的问题存在于您的模型中？方法.由于它始终返回false,因此Rails总是认为它正在为新创建的记录构建表单,因此它使用POST并提交到集合URL.
在该方法中需要某种逻辑,以便现有记录返回true并且新记录返回false.
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