我一直收到錯誤,無法將nil轉換爲字符串,下面是我對控制器和視圖的鱈魚,對此有任何想法或建議可以幫助解決它?Ruby On Rails錯誤無法將Nil轉換爲字符串
class ShowDateTimeController < ApplicationController
def display
@title = "Some Project For Date and Time"
@current_time = Time.now.asctime
@current_time2 = Time.now
t = Time.now
@h= t.hour
@m= t.min
@s= t.sec
@v= Time.now.strftime ("%B")
t.hour.to_s
if t.hour > 6 && t.hour < 18
@img = "sun.jpg"
@name = "Good Morning The Sun Is Up"
else
@img = "moon.jpg"
@name = "Good Night The Moon Is Up"
if Time.now.month == 1
@img_month= "jan.jpg"
elsif Time.now.month ==2
@img_month = "feb.jpg"
elsif Time.now.month ==3
@img_month = "mar.jpg"
elsif Time.now.month ==4
@img_month = "apr.jpg"
elsif Time.now.month ==5
@img_month = "may.jpg"
elsif Time.now.month ==6
@img_month = "jun.jpg"
elsif Time.now.month ==7
@img_month = "jul.jpg"
elsif Time.now.month ==8
@img_month = "aug.jpg"
elsif Time.now.month ==9
@img_month = "feb.jpg"
elsif Time.now.month ==10
@img_month = "oct.jpg"
elsif Time.now.month ==11
@img_month = "nov.jpg"
else
@img_month = "dec.jpg"
在本地主機觀看時,當我嘗試從vaiable @img_month
image_tag @img_month, :class => 'img'
<獲取圖像的錯誤----錯誤的是這裏是我沒有用護欄分隔符<%=>
但仍有錯誤
你能解決這個缺口,並添加缺少的'end'報表? – 2011-05-07 21:57:35
嘿,只是一個建議:你可以使用像Date :: MONTHNAMES [Time.now.month] [0..2] .downcase +「.jpg」之類的東西來生成文件名 – bassneck 2011-05-07 22:24:18
@bassneck:還有Date :: ABBR_MONTHNAME。但由於某些原因九月有feb.jpg,所以這是行不通的。 – steenslag 2011-05-07 22:35:28