【发布时间】：2015-12-23 23:03:56
【问题描述】：
我有一个带有 Rspec (3.1.0) 和 FactoryGirl (4.5.0) 的 Rails (4.1.8) 应用程序用于测试。我的控制器对创建后操作的测试失败并出现以下错误：
Failure/Error: post :create, { member_id: @member, fitness_goal: @fitness_goal_attributes }
NoMethodError:
undefined method `reject' for nil:NilClass
健身目标工厂：
FactoryGirl.define do
factory :fitness_goal do
association :goal_list
association :timeframe
start_date Date.current
end_date Date.current + 30
targets { [create(:target, outcome: "Lose Fat"), create(:target, outcome: "Reduce caloric intake by x%")] }
activities { [create(:activity, description: "Walk x steps a day"), create(:activity, description: "Climb x floors a day"), create(:activity, description: "Run x mile a day")] }
association :member
association :trainer
notes 'This is a sample note.'
end
end
相关的FactoryGirl实例变量：
@fitness_goal_attributes = FactoryGirl.build(:fitness_goal).attributes
我在我的健身目标控制器的创建操作中使用了数组拒绝方法：
def create
unless params[:fitness_goal].blank? && params[:activity_ids].blank? && params[:target_ids].blank?
params[:fitness_goal][:activity_ids] = params[:fitness_goal][:activity_ids].reject{ |activity_ids| activity_ids.empty? }
params[:fitness_goal][:target_ids] = params[:fitness_goal][:target_ids].reject{ |target_ids| target_ids.empty? }
@fitness_goal = @member.fitness_goals.build(fitness_goal_params)
if @fitness_goal.save
flash[:success] = "Fitness goal was successfully created."
redirect_to member_fitness_goals_path(@member)
else
render 'new'
end
end
end
健身目标参数：
def fitness_goal_params
params.require(:fitness_goal).permit(:goal_list_id, :timeframe_id, :start_date, :end_date, { target_ids: [] }, { activity_ids: [] }, :notes, :member_id, :trainer_id)
end
**** 编辑 ****** binding.pry 的结果/更好的错误：
params[:fitness_goal][:activity_ids]
=> ["12", "10", "11"]
params[:fitness_goal][:target_ids]
=> ["1", "2"]
params[:fitness_goal]
=> {"goal_list_id"=>"1", "timeframe_id"=>"2", "start_date"=>"2015-12-16", "end_date"=>"2016-01-15", "target_ids"=>["1", "2"], "activity_ids"=>["12", "10", "11"], "trainer_id"=>"", "notes"=>"testing"}
***** 编辑 *****
应用程序在开发和生产环境中按预期工作，但 Rspec 对 POST create 方法的所有测试都抛出错误。当我在数组上调用拒绝方法时，我无法弄清楚为什么 unless 语句没有充当“nil 守卫”。我做错了什么以及如何解决错误？
【问题讨论】：
-
它来自 FitnessGoalsController.create 的第 3 行或第 4 行
-
@Andrew Williamson - 正如我在问题中提到的，我知道控制器中的错误来自哪里。我只是不知道如何解决它。
-
一个好的开始是打印 params 变量，并确保 params[:fitness_goal][:activity_ids] 和 params[:fitness_goal][:target_ids] 都已定义
-
使用 Pry / Better Errors，我可以确认两个参数变量都已定义。
-
看起来确实不是。你能
pry你的 create 方法，运行测试，然后检查fitness_goal_params并编辑你的问题以包含值吗？
标签： ruby ruby-on-rails-4 rspec factory-bot