Rails如何創建ajax星級評分

Question

我正在嘗試使用rate it jquery創建一些簡單的ajax評級。 我可以看到星星並按下它們。但我的表單不提交。

如何使用ajax提交評分？

在我的表我有兩列：

rating_score => The current score 
ratings => The number of ratings which led to the score 

我的駕駛員學校放映視圖：

<h1><%= @kategori.h2.force_encoding("UTF-8") %></h1> 
<div id="konkurrancer"><%= render 'konkurrencer', :remote => true %></div> 

我konkurrencer部分：

<div id="tabel"> 
    <table id="tabel1"> 
    <tr id="toptr"> 
     <td><%= sortable "name", "Navn" %></td> 
    </tr> 
    <% @konkurrancer.each do |vind| %> 
     <tr class="thumbnail-item" onclick="window.open('<%= vind.tracking %>')"> 
     <td><%= truncate(vind.name.force_encoding("UTF-8"), :length => 45) %></td> 
     <td> 
      <div id="container"> 
      <%= render :partial => "rating", :remote => true, :locals => { :vind => vind } %> 
      </div> 
     </td> 
     </tr> 
    <% end %> 
    </table> 
    <div id="pagenavi"> 
    <%= hidden_field_tag :direction, params[:direction] %> 
    <%= hidden_field_tag :sort, params[:sort] %> 
    </div> 
</div> 

我的等級分：

<%= form_for(:vind, :url => rate_path(vind.id), :remote => true, :html => { :method => 'put', :id => "rateform"}) do |f| %> 
<%= f.text_field :ratings, :size => 1, :min => 1, :max => 6, :value => 1, :type => 'range', :step => '1', :id => "#{vind.id}" %> 
<div class="rateit" id="rateit10b" data-rateit-backingfld="#<%= vind.id %>" data-rateit-resetable="false" ></div> 
<% end %> 
    <script type ="text/javascript"> 
    $('.rateit').bind('rated reset', function (e) { 
     var ri = $(this); 

     //if the use pressed reset, it will get value: 0 (to be compatible with the HTML range control), we could check if e.type == 'reset', and then set the value to null . 
     var value = ri.rateit('value'); 
     var frmurl = ri.closest('form').attr('action'); //get the url from the form 

     $.ajax({ 
      url: frmurl, //your server side script 
      data: { ratings: value }, //our data 
      type: 'PUT', 
      success: function (data) { 
        //write here something when everything went ok 

      }, 
      error: function (jxhr, msg, err) { 
       alert(msg); //something went wrong. 
      } 
     }); 
    }); 
</script> 

我rate.js：

$('#<%= @container %>').html('<%= escape_javascript(render(partial: 'rating', locals: { konkurrancer: @konkurrancer })) %>'); 

我的控制器：

class KonkurrancersController < ApplicationController 
    def rate 
    @konkurrancer = Konkurrancer.find(params[:id]) 
    @container = "Konkurrancer"+@Konkurrancer.id.to_s 

    @theme.rating_score += params[:rating].to_i 
    @theme.ratings += 1 
    @theme.save 

    respond_to do |format| 
     format.js 
    end 
    end 
end 

這是我的評價我的瀏覽器。當我按下gem Vind時，參數等級將與ajax一起發送，值爲5.問題是我希望它在按星號時發送，而不是使用提交按鈕。

我當表單提交控制檯：

Started POST "/konkurrancers/rate/12" for 127.0.0.1 at 2011-04-04 23:37:56 +0200 

    Processing by KonkurrancersController#rate as JS 
    Parameters: {"utf8"=>"Ô£ô", "authenticity_token"=>"3IqZ6IfvaFYQnVeMYu2a09PcCnm 
VW52vaEp2KjfJ1g8=", "vind"=>{"rating"=>"6"}, "commit"=>"Gem Vind", "id"=>"12"} 
    ←[1m←[35mKonkurrancer Load (1.0ms)←[0m SELECT `konkurrancers`.* FROM `konkurr 
ancers` 
    ←[1m←[36mCACHE (0.0ms)←[0m ←[1mSELECT `konkurrancers`.* FROM `konkurrancers`← 
[0m 
    ←[1m←[35mCACHE (0.0ms)←[0m SELECT `konkurrancers`.* FROM `konkurrancers` 
    ←[1m←[36mKonkurrancer Load (1.0ms)←[0m ←[1mSELECT `konkurrancers`.* FROM `kon 
kurrancers` WHERE (`konkurrancers`.`cached_slug` = '12') LIMIT 1←[0m 
    ←[1m←[35mSQL (1.0ms)←[0m SELECT sluggable_id FROM slugs WHERE ((slugs.sluggab 
le_type = 'Konkurrancer' AND slugs.name = '12' AND slugs.sequence = 1)) 
    ←[1m←[36mKonkurrancer Load (0.0ms)←[0m ←[1mSELECT `konkurrancers`.* FROM `kon 
kurrancers` WHERE (`konkurrancers`.`id` = 12) LIMIT 1←[0m 
    ←[1m←[35mSQL (0.0ms)←[0m BEGIN 
    ←[1m←[36mSlug Load (22.0ms)←[0m ←[1mSELECT `slugs`.* FROM `slugs` WHERE (`slu 
gs`.sluggable_id = 12 AND `slugs`.sluggable_type = 'Konkurrancer') ORDER BY id D 
ESC LIMIT 1←[0m 
    ←[1m←[35mAREL (14.0ms)←[0m UPDATE `konkurrancers` SET `rating_score` = 17, `r 
atings` = 5, `updated_at` = '2011-04-04 21:37:57' WHERE (`konkurrancers`.`id` = 
12) 
    ←[1m←[36mSQL (16.0ms)←[0m ←[1mCOMMIT←[0m 
Rendered konkurrancers/_rating.html.erb (1.0ms) 
Rendered konkurrancers/rate.js.erb (24.0ms) 
Completed 200 OK in 439ms (Views: 226.0ms | ActiveRecord: 55.0ms) 

我在查看HTML：http://pastie.org/1756195

Answer 1

我是RateIt插件的作者。我有一條關於Ruby On Rails的小線索，但我會盡量回答這個問題。

RateIt控件在獲取評分後不會自動提交。您必須綁定到rated事件。

如果你的表格是設置正確，下面的JavaScript應該工作：

AJAX提交：

<script type ="text/javascript"> 
    jQuery('.rateit').bind('rated reset', function (e) { 
     var ri = jQuery(this); 

     //disable voting... 
     ri.rateit('readonly', true); 
     //add a span with the selected rating after the rateit plugin. 
     ri.after('<span class="rating">' + ri.rateit('value') + '</span>'); 

     //if the use pressed reset, it will get value: 0 (to be compatible with the HTML range control), we could check if e.type == 'reset', and then set the value to null . 
     var frm = ri.closest('form'); 

     jQuery.ajax({ 
      url: frm.attr('action'), //your server side script 
      data: frm.serialize(), //our data 
      type: 'POST', 
      success: function (data) { 
        //write here something when everything went ok 

      }, 
      error: function (jxhr, msg, err) { 
       alert(msg); //something went wrong. 
      } 
     }); 
    }); 
</script> 

非Ajax提交

<script type ="text/javascript"> 
    jQuery('.rateit').bind('rated reset', function (e) { 
     jQuery(this).closest('form').submit(); 
    }); 
</script>