如何在 rails3 和 jQuery 中通过 ajax 呈现部分

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时间:2020-08-26 18:34:43  来源:igfitidea点击:

How do I render partial via ajax in rails3 and jQuery

ruby-on-rails-3jquery

提问by necker

I could do sth like this in rails 2:

我可以在 Rails 2 中做这样的事情:

def show_rec_horses
  rec_horses = Horses.find(:all)
  page["allHorses"].replace_html :partial => "horses/recommended", :locals => 
 {:rec_horses => rec_horses}
end

How do I do this in Rails3 with jQuery. So how can I replace html of my div with a partial via ajax call(link_to :remote => true) in Rails3.

如何使用 jQuery 在 Rails3 中执行此操作。那么如何在 Rails3 中通过 ajax call(link_to :remote => true) 用部分替换 div 的 html。

I tried sth like (in my show_rec_horses.js.erb):

我尝试过(在我的 show_rec_horses.js.erb 中):

$("#interactionContainer").update("<%= escape_javascript(render("horses/recommended"))%>");

And nothing happens. I tried some other variations but none worked. What am doing wrong? Should this be approached in some other way? Any answer would be greatly appreciated.

什么也没有发生。我尝试了其他一些变体,但没有一个奏效。做错了什么?应该以其他方式解决这个问题吗?任何答案将不胜感激。

回答by Arjan

Okay, let's start with the controller.

好的,让我们从控制器开始。

def show_rec_horses
  @rec_horses = Horses.find(:all)

  respond_to do |format|
    format.html # show_rec_horses.html.erb
    format.js   # show_rec_horses.js.erb
  end
end

This will make sure the correct templates are being rendered for either a html request or a javascript request. If you just need to respond to a javascript request, delete the html part.

这将确保为 html 请求或 javascript 请求呈现正确的模板。如果您只需要响应 javascript 请求,请删除 html 部分。

Now let's say you have a page containing the following:

现在假设您有一个包含以下内容的页面:

<p><%= link_to 'Show Horses', show_rec_horses_path, remote: true %></p>

<div id="interactionContainer"></div>

Clicking the link will make a request to the show_rec_horses action in your controller, this action will render the javascript file show_rec_horses.js.erb.

单击该链接将向控制器中的 show_rec_horses 操作发出请求,此操作将呈现 javascript 文件show_rec_horses.js.erb

This javascript file should contain something like this:

这个 javascript 文件应该包含如下内容:

$('#interactionContainer').html('<%=j render partial: 'horses/reccommended', locals: { rec_horses: @rec_horses } %>')

Now your container will be filled with the content of horses/_reccommended.html.erb, which for example could contain:

现在您的容器将填充 的内容horses/_reccommended.html.erb,例如可能包含:

<% rec_horses.all.each do |rec_horse| %>
  <p><%= rec_horse.name %></p>
<% end %>