Ruby on rails NoMethodError(未定义的方法“projects';用于nil:NilClass):
NoMethodError(对于nil:NilClass,未定义的方法<代码>项目]: app/controllers/project_controller.rb:8:inindex' 这是一个项目控制员:Ruby on rails NoMethodError(未定义的方法“projects';用于nil:NilClass):,ruby-on-rails,Ruby On Rails,NoMethodError(对于nil:NilClass,未定义的方法项目]: app/controllers/project_controller.rb:8:inindex' 这是一个项目控制员: class ProjectController < ApplicationController before_action :confirm_logged_in before_action :find_company def index @projects = @
class ProjectController < ApplicationController
before_action :confirm_logged_in
before_action :find_company
def index
@projects = @company.projects.sorted
end
def show
@project = Project.find(params[:id])
end
def new
@project = Project.new()
@project_count = Project.count + 1
@companys = Company.order("position ASC")
end
def create
@project = Project.new(project_params)
if @project.save
redirect_to(:action => 'index')
else
@project_count = Project.count + 1
@companys = Company.order("position ASC")
render('new')
end
end
def edit
@project = Project.find(params[:id])
@project_count = Project.count
@companys = Company.order("position ASC")
end
def update
@project = Project.find(params[:id])
if @project.update_attributes(project_params)
redirect_to(:action => 'index')
else
@project_count = Project.count
@companys = Company.order("position ASC")
render('new')
end
end
def delete
@project = Project.find(params[:id])
end
def destory
@project = Project.find(params[:id])
@project.destroy
redirect_to(:action => 'index')
end
private
def project_params
params.require(:project).permit(:name, :position, :type_of_project, :description, :no_of_tasks)
end
def find_company
if params[:company_id]
@company = Company.find(params[:company_id])
end
end
end
class ProjectController'index')
其他的
@project\u count=project.count+1
@公司=公司订单(“职位ASC”)
呈现('新')
结束
结束
定义编辑
@project=project.find(参数[:id])
@project\u count=project.count
@公司=公司订单(“职位ASC”)
结束
def更新
@project=project.find(参数[:id])
if@project.update_属性(project_参数)
将_重定向到(:action=>'index')
其他的
@project\u count=project.count
@公司=公司订单(“职位ASC”)
呈现('新')
结束
结束
def删除
@project=project.find(参数[:id])
结束
破坏
@project=project.find(参数[:id])
@破坏计划
将_重定向到(:action=>'index')
结束
私有的
def项目参数
参数require(:project).permit(:名称,:位置,:项目类型,:描述,:任务编号)
结束
def find_公司
如果参数[:公司id]
@company=company.find(参数[:company\u id])
结束
结束
结束
错误意味着@公司
为零
。公司来自方法find_company
,您可以更正find_company
逻辑,或者在请求中提供company_id
参数。如果@company
为零,您还可以调整index
方法以获取所有项目,如下所示:
def index
@projects = Project.all.sorted
end
这完全取决于您希望如何加载项目。要进入索引页,您的链接url或按钮url是什么。您需要传递
:company_id
参数才能使其工作
e、 g
projects\u path(:company\u id=>company.first.id)
def index
@projects = Project.all.sorted
end