相关疑难解决方法(0)

我使用单表继承来管理不同类型的项目.

楷模:

class Project < ActiveRecord::Base
end

class SiteDesign < Project
end

class TechDesign < Project
end

从projects_controller编辑动作:

def edit
   @project = Project.find(params[:id])
end

查看edit.html.erb:

<% form_for(@project, :url => {:controller => "projects",:action => "update"}) do |f| %>
    ...
    <%= submit_tag 'Update' %>
<% end %>

更新projects_controller的操作:

def update
    @project = Project.find(params[:id])
    respond_to do |format|
      if @project.update_attributes(params[:project])
        @project.type = params[:project][:type]
        @project.save
        flash[:notice] = 'Project was successfully updated.'
        format.html { redirect_to(@project) }
        format.xml  { head :ok }
      else
        format.html { render :action …