[英]How to implement an AJAX price compare feature in Rails?
I want to create an AJAX price compare feature.我想创建一个 AJAX 价格比较功能。 I don't really know how it should work.
我真的不知道它应该如何工作。
A user should be able to select a company and a loading icon will appear.用户应该能够 select 一个公司,并且会出现一个加载图标。 The list of companies will be ordered by price and show how much the user can save.
公司列表将按价格排序,并显示用户可以节省多少。
Here is my form:这是我的表格:
<select style=" margin-left:10px;width:370px;float: left;
margin-top: 10px;"name="konkurrancer[form]" id="konkurrancer_form" class="select optional">
<option value="Andet">Company 1</option>
<option value="Andet">Company 2</option>
<option value="Andet">Company 3</option>
</select>
And I have a table with all the company names and prices.我有一张包含所有公司名称和价格的表格。
My table:我的桌子:
name price id
comany 1 120 1
comany 2 80 2
comany 3 60 3
comany 4 40 4
Example: A user selects company 1, that has the price $120.示例:用户选择价格为 120 美元的公司 1。 He will see all the companies ordered and determine how much he can save.
他将查看所有订购的公司并确定他可以节省多少。 In this case, he would see company 4 first and the information that he can save (120-40) 80$.
在这种情况下,他会首先看到公司 4 以及他可以节省 (120-40) 80 美元的信息。
I think if you use something like jQuery, a lot of this becomes easier because it appears you'll want to do some basic DOM manipulation as a part of (6).我认为如果你使用 jQuery 之类的东西,这会变得更容易,因为看起来你会想要做一些基本的 DOM 操作作为 (6) 的一部分。
I can't really help you sort out the algorithm in (4) but I can answer more directed questions about the other steps if you have any.我真的无法帮助您理清(4)中的算法,但如果您有任何其他步骤,我可以回答更多有针对性的问题。
Edit: Sort the companies by price, low to high, then when you subtract the current price from each one you'll end up with the greatest savings first.编辑:按价格从低到高对公司进行排序,然后当您从每个公司中减去当前价格时,您将首先获得最大的节省。
As for your controller, I guess you'll need to pass in the current price, and the id of the company selected...至于你的 controller,我想你需要传入当前价格,以及所选公司的 id ......
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