如果 params[:attribute] == true 那么在控制器中做 "X"？

Question

如果:someday等于true如何触发#x条件？

db

t.boolean  "someday"

控制器

# In new.html.erb user inputs challenge.name and can checkmark challenge.someday
def new
  @challenge = Challenge.new
end

# If user checkmarks someday than do x otherwise do y (keep in mind conditional is triggered before challenge is created)
def create
  if params[:someday] == true
    #x
  else
    #y
  end
end

控制台

Started POST "/challenges" for 127.0.0.1 at 2016-06-03 14:04:01 -0400
Processing by ChallengesController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"Ii3RdJYAnOpT/OOkqVA74b8YD5suUA3Rf4Wegih65xSSU0r1c5DB0UCJVWcGcid3JtSt6fjzmfYpbWZtf2Dm/A==", "challenge"=>{"someday"=>"1", "name"=>"test"}, "button"=>""}
  User Load (0.5ms)  SELECT  "users".* FROM "users" WHERE "users"."id" =  LIMIT 1  [["id", 15]]
  Rendered shared/_error_messages.html.erb (0.2ms)
  Rendered challenges/create.html.erb within layouts/application (48.5ms)

现在无论我如何调整 params[:someday] == true #y 条件都会被触发。我试过了，params[:someday] == "true"、params[:someday] == 1、params[:someday] == "1"、params[:someday] == "t"

Answer 1

你做错了。你应该做 params[:challenge][:someday] 因为 someday 在 challenge 散列中。下面的代码应该可以工作

def create
  if params[:challenge][:someday] == "1"
    #x
  else
    #y
  end
end

Answer 2

params[:someday] 应该是 params[:challenge][:someday]，因为您提交的值来自表单

def create
  if params[:challenge][:someday]
    #x
  else
    #y
  end
end

会成功的

Answer 3

你在 html returns 1 中的 check_box，如果你想要它 return 布尔值，那么按照下面的操作。此外，在控制器参数中应该是这样的：params[: challenge][:someday]

形式

<%= f.check_box :someday, {}, true , false %>

控制器

def create
  if params[: challenge][:someday]
    #x
  else
    #y
  end
end

如果 params[:attribute] == true 那么在控制器中做 "X"？

if params[:attribute] == true then do "X" in controller?

ruby

conditional

ruby-on-rails