rails-如何使用参数发出GET请求以执行操作 [英] rails - how to make a GET request to action with parameters

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问题描述

我希望这个问题是一个相当简单的问题,因为我对Rails开发还比较陌生.我正在尝试从具有指定操作的控制器发出get请求并传递必需的参数.这是帮助程序类中的相关代码:

I'm hoping this problem is a fairly simple one as I am relatively new to rails development. I am trying to make a get request from a controller with a specified action and pass required parameters. This is the relevant code in the helper class:

module ChartsHelper
  def chart_tag (action, height, params = {})
    params[:format] ||= :json
    path = charts_path(action, params)
    content_tag(:div, :'data-chart' => path, :style => "height: #{height}px;") do
      image_tag('loading.gif', :size => '32x32', :class => 'spinner')
  end
 end
end

以及ChartsController中的相应动作:

and the corresponding action in the ChartsController:

class ChartsController < ApplicationController

  def week_events_bar_chart
    days = (params[:days] || 30).to_i
    render :json => {
      :type => 'AreaChart',
      :cols => [['string', 'Date'], ['number', 'subscriptions']],
      :rows => (1..days).to_a.inject([]) do |memo, i|
        date = i.days.ago.to_date
        t0, t1 = date.beginning_of_day, date.end_of_day
        subscriptions = Kpsevent.all.count
        memo << [date, subscriptions]
        memo
      end.reverse,
      :options => {
        :chartArea => { :width => '90%', :height => '75%' },
        :hAxis => { :showTextEvery => 30 },
        :legend => 'bottom',
      }
    }
  end
end

路由文件具有以下内容:

The routes file has the following:

resource :charts do
    get 'week_events_bar_chart'
end

但是,尝试执行此请求时,我得到以下输出:

However I get the following output when trying to perform this request:

 Started GET "/charts.week_events_bar_chart?days=14" for 127.0.0.1 at Tue May 22 00:31:48 +1200 2012
   Processing by ChartsController#index as 
   Parameters: {"days"=>"14"}

从不调用控制器动作.有人能帮助解决这个问题吗?

And the controller action is never called. Is anyone able to help with this problem?

耙路线输出:

week_events_bar_chart_charts GET    /charts/week_events_bar_chart(.:format) {:controller=>"charts", :action=>"week_events_bar_chart"}
POST   /charts(.:format)                  {:controller=>"charts", :action=>"create"}
new_charts GET    /charts/new(.:format)    {:controller=>"charts", :action=>"new"}
edit_charts GET    /charts/edit(.:format)  {:controller=>"charts", :action=>"edit"}
GET    /charts(.:format)                   {:controller=>"charts", :action=>"show"}
PUT    /charts(.:format)                   {:controller=>"charts", :action=>"update"}
DELETE /charts(.:format)                   {:controller=>"charts", :action=>"destroy"}

推荐答案

在控制台上的评论:

在导轨中的 chart_path(x,...)将生成一条到 ChartsController#show 的路径,其参数为id = x,默认情况下为 GET/图表/x .通过命名参数"action",您自欺欺人,"week_events_bar_chart"将只是静态路由中的ID.

in rails chart_path(x,...) will generate a route to ChartsController#show with param id = x, which is by default GET /charts/x. By naming your parameter 'action', you fooled yourself, 'week_events_bar_chart' will just be the id in the restful route.

原始代码: charts_path(x,params)将路由到格式为x的 ChartsController#index ,该格式类似于 GET/charts.week_events_bar_chart ,再次将其称为操作骗了你.

To your original code: charts_path(x, params) will route to ChartsController#index with format x, which looks like GET /charts.week_events_bar_chart, again calling it action fooled you.

您需要的是用于操作的命名路由帮助器 week_events_bar_chart_charts_path .

What you need is the named route helper week_events_bar_chart_charts_path for your action.

但是,由于您似乎希望您的帮助程序操作具有依赖性,因此我建议使用url_for. http://api.rubyonrails.org/classes/ActionView/Helpers/UrlHelper.html#method-i-url_for

But since you seem to want your helper action dependent, i recommend url_for. http://api.rubyonrails.org/classes/ActionView/Helpers/UrlHelper.html#method-i-url_for

module ChartsHelper
  def chart_tag(action, height, params = {})
    params[:format] ||= :json
    url = url_for({:action => action, :controller => 'charts'}.merge(params))
    content_tag(:div, :'data-chart' => url, :style => "height: #{height}px;") do
      image_tag('loading.gif', :size => '32x32', :class => 'spinner')
  end
 end

结束

如果您确实想要完整路径,则可以通过:only_path =>false 替换为url_for.

If you really want full path you pass :only_path => false to url_for.

这篇关于rails-如何使用参数发出GET请求以执行操作的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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