在 ruby​​ on rails 上获取“错误数量的参数”

Question

参数数量错误（给定 2，预期 1）

运动控制器

class SportsController < ApplicationController
  def index
    @sport = Sport.all
    @events, @errors = Bapi::Inplay.all(query)
  end

  private
    def query
      params[:query, {}]
    end
end

运动指数.html.erb

 <% @sports.each do |sport| %>
   <% @events(:sport_id => sport.id).each_slice(2) do |events| %>

我想将每个 sport.id 发送到 @enevts 实例变量

---

编辑： 当在SportsController 中将查询作为哈希发送时！！

class SportsController < ApplicationController
  def index
    @sport = Sport.all
    query = {:sport_id => 1} 
    @events, @errors = Bapi::Inplay.all(query)
  end

  private
    def query
      params[:query, {}]
    end
end

---

Index.html.erb

 <% @sports.each do |sport| %>
   <% @events.each_slice(2) do |events| %>

Answer 1

params 是一个哈希值，:[] 方法只能接受一个参数。

 def query
    params[:query] || {}  # Will return :query part or empty Hash if it has nothing
 end