ruby-on-rails – 没有ActiveRecord的form_for,表单操作不更新
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. (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |