使用has_many和Rails中的find（）缺少方法'％'

Question

當我嘗試訪問has_many關係的find方法時，出現一個非常奇怪的錯誤。

我在做什麼語法錯誤？

# Instructor model 
class Instructor < ActiveRecord::Base 
    has_many :events 
end 

# Event model 
class Event < ActiveRecord::Base 
    belongs_to :instructor 
end 

# Controller snip-it 
i = Instructor.first 
conditions = [ :start_time => params[:start]..params[:end], :submitted => true ] 
@events = i.events.find(:all, :conditions => conditions) 

# Error message 
# NoMethodError (undefined method `%' for {:start_time=>"1283140800".."1286769600", :submitted=>true}:Hash): 

Answer 1

這條線：

conditions = [ :start_time => params[:start]..params[:end], :submitted => true ] 

應改爲：

conditions = { :start_time => params[:start]..params[:end], :submitted => true } 

你用它的哈希，而不是一個單一的散列創建數組。