RubyOnRails 2.2 + Jquery UI 可排序& AJAX:我就是这么做的。 有没有更好的办法?
在 Rails 2.2 项目中,我让用户将项目列表放在一个组合对象中(即:PortfolioHasManyProjects
)。 页面上有一个用于常规文本、标题等的 Rails 表单,以及 2 个可排序列表; 这些列表用于将项目从全局项目列表拖到您的投资组合项目列表中。
它与这里所做的类似: http://ui.jquery.com/latest/demos/function/# ui.sortable。
我的投资组合列表 (#drag_list) 会根据更改进行更新,并通过 AJAX 调用提交其序列化数据。 这是在 application.js 文件中完成的:
jQuery.ajaxSetup({
'beforeSend': function(xhr) {xhr.setRequestHeader("Accept", "text/javascript")}
})
jQuery.fn.submitDragWithAjax = function() {
this.submit(function() {
$.post(this.action, $("#drag_list").sortable('serialize'), null, "script");
return false;
})
return this;
};
$(document).ajaxSend(function(event, request, settings) {
if (typeof(AUTH_TOKEN) == "undefined") return;
// settings.data is a serialized string like "foo=bar&baz=boink" (or null)
settings.data = settings.data || "";
settings.data += (settings.data ? "&" : "") + "authenticity_token=" + encodeURIComponent(AUTH_TOKEN);
});
/-------------------------------------------/
$(document).ready(function(){
$(".ajax_drag").submitDragWithAjax();
$("#drag_list").sortable({
placeholder: "ui-selected",
revert: true,
connectWith:["#add_list"],
update : function () {
$("#drag_list").submit();
}
});
$("#add_list").sortable({
placeholder: "ui-selected",
revert: true,
connectWith:["#drag_list"]
});
这就是事情变得棘手的地方。 我不确定如何处理序列化数据并将其与表单一起提交到 new.html.erb 文件中的控制器。 所以我所做的就是让 new.js.erb
将隐藏的表单字段插入到 new.html.erb
中,并包含我在控制器中提取的数据。
这是 new.js.erb:
$("#projects").html("");
<% r = params[:proj] %>
<% order=1 %>
<% for i in r %>
$("#projects").append("<input type=hidden name=proj[<%=order%>] value=<%=i%> />");
<% order=order+1 %>
<% end %>
编辑 new.html.erb:
<h1>New portfolio</h1>
<h2>The List</h2>
<div class="list_box">
<h3>All Available Projects</h3>
<%= render :partial => "projects/add_list" %>
</div>
<div class="list_box">
<h3>Projects currently in your new portfolio</h3>
<%= render :partial => "projects/drag_list" %>
</div>
<div style="clear:both"></div>
<br/>
<br/>
<h2>Portfolio details</h2>
<% form_for(@portfolio) do |f| %>
<%= f.error_messages %>
<h3>Portfolio Name</h3>
<p>
<%= f.text_field :name %>
</p>
<h3>URL</h3>
<p>
<%= f.text_field :url %>
</p>
<h3>Details</h3>
<p>
<%= f.text_area :details %>
</p>
<p>
<div id="projects">
<input type="hidden" name="proj" value="" />
</div>
<%= f.submit "Create" %>
</p>
<% end %>
然后表单提交到投资组合控制器中的创建方法:
def new
@projects = Project.find(:all)
@portfolio = Portfolio.new
respond_to do |format|
format.html # new.html.erb
format.xml { render :xml => @portfolio }
format.js
end
end
def create
@portfolio = Portfolio.new(params[:portfolio])
proj_ids = params[:proj]
@portfolio.projects = []
@portfolio.save
proj_ids.each {|key, value| puts "Key:#{key} , Value:#{value} " }
proj_ids.each_value {|value| @portfolio.projects << Project.find_by_id(value) }
respond_to do |format|
if @portfolio.save
flash[:notice] = 'Portfolio was successfully created.'
format.html { render :action => "index" }
format.xml { render :xml => @portfolio, :status => :created, :location => @portfolio }
else
format.html { render :action => "new" }
format.xml { render :xml => @portfolio.errors, :status => :unprocessable_entity }
end
end
end
所以最后是我的问题:
这是这样做的正确方法吗? 出于某种原因,我觉得事实并非如此,主要是因为在 Rails 中做其他所有事情似乎更加容易和直观。 这可行,但实现起来却很困难。 必须有一种更优雅的方式通过 AJAX 调用将序列化数据发送到控制器。
如何在同一页面上调用不同的 AJAX 操作? 假设我有一个可排序和自动完成 AJAX 调用,我可以有一个
sortable.js.erb
和autocomplete.js.erb
并从任何文件调用它们吗? 我不确定如何设置控制器来响应此问题。
In a Rails 2.2 project, I'm having users put together a list of projects into a portfolio object (i.e.: PortfolioHasManyProjects
). On the page is a Rails form for regular text, titles etc., as well as 2 sortable lists; the lists are used for dragging projects from the global-project-list into your portfolio-project-list.
It is similar to what's done here:
http://ui.jquery.com/latest/demos/functional/#ui.sortable.
I have the portfolio list (#drag_list) updating on change and submitting its serialized data through an AJAX call.
This is done in the application.js file:
jQuery.ajaxSetup({
'beforeSend': function(xhr) {xhr.setRequestHeader("Accept", "text/javascript")}
})
jQuery.fn.submitDragWithAjax = function() {
this.submit(function() {
$.post(this.action, $("#drag_list").sortable('serialize'), null, "script");
return false;
})
return this;
};
$(document).ajaxSend(function(event, request, settings) {
if (typeof(AUTH_TOKEN) == "undefined") return;
// settings.data is a serialized string like "foo=bar&baz=boink" (or null)
settings.data = settings.data || "";
settings.data += (settings.data ? "&" : "") + "authenticity_token=" + encodeURIComponent(AUTH_TOKEN);
});
/-------------------------------------------/
$(document).ready(function(){
$(".ajax_drag").submitDragWithAjax();
$("#drag_list").sortable({
placeholder: "ui-selected",
revert: true,
connectWith:["#add_list"],
update : function () {
$("#drag_list").submit();
}
});
$("#add_list").sortable({
placeholder: "ui-selected",
revert: true,
connectWith:["#drag_list"]
});
Here is where things got tricky. I wasn't sure how to deal with the serialized data and have it submit with the form to the controller in the new.html.erb
file. So what I did was have the new.js.erb
insert hidden form fields into new.html.erb
with the data that I would extract in the controller.
here's the new.js.erb:
$("#projects").html("");
<% r = params[:proj] %>
<% order=1 %>
<% for i in r %>
$("#projects").append("<input type=hidden name=proj[<%=order%>] value=<%=i%> />");
<% order=order+1 %>
<% end %>
which edits new.html.erb:
<h1>New portfolio</h1>
<h2>The List</h2>
<div class="list_box">
<h3>All Available Projects</h3>
<%= render :partial => "projects/add_list" %>
</div>
<div class="list_box">
<h3>Projects currently in your new portfolio</h3>
<%= render :partial => "projects/drag_list" %>
</div>
<div style="clear:both"></div>
<br/>
<br/>
<h2>Portfolio details</h2>
<% form_for(@portfolio) do |f| %>
<%= f.error_messages %>
<h3>Portfolio Name</h3>
<p>
<%= f.text_field :name %>
</p>
<h3>URL</h3>
<p>
<%= f.text_field :url %>
</p>
<h3>Details</h3>
<p>
<%= f.text_area :details %>
</p>
<p>
<div id="projects">
<input type="hidden" name="proj" value="" />
</div>
<%= f.submit "Create" %>
</p>
<% end %>
The form then submits to the create method in the portfolio controller:
def new
@projects = Project.find(:all)
@portfolio = Portfolio.new
respond_to do |format|
format.html # new.html.erb
format.xml { render :xml => @portfolio }
format.js
end
end
def create
@portfolio = Portfolio.new(params[:portfolio])
proj_ids = params[:proj]
@portfolio.projects = []
@portfolio.save
proj_ids.each {|key, value| puts "Key:#{key} , Value:#{value} " }
proj_ids.each_value {|value| @portfolio.projects << Project.find_by_id(value) }
respond_to do |format|
if @portfolio.save
flash[:notice] = 'Portfolio was successfully created.'
format.html { render :action => "index" }
format.xml { render :xml => @portfolio, :status => :created, :location => @portfolio }
else
format.html { render :action => "new" }
format.xml { render :xml => @portfolio.errors, :status => :unprocessable_entity }
end
end
end
So finally my question:
Is this a proper way of doing this? For some reason I feel it isn't, mostly because doing everything else in Rails seemed so much easier and intuitive. This works, but it was hell to get it to. There has to be a more elegant way of sending serialized data to the controller through AJAX calls.
How would I call for different AJAX actions on the same page? Let's say I had a sortable and an autocomplete AJAX call, could I have a
sortable.js.erb
andautocomplete.js.erb
and call them from any file? I'm not sure how to setup the controllers to respond to this.
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评论(2)
如果您使用 jQuery,这是一个不错的解决方案。
来自链接的博客:
This is a nice solution if you are using jQuery.
From the linked blog:
这是我的解决方案,基于 Silviu 提到的文章。 我正在对属于课程的部分进行排序,因此包含了 LessonID。
这是在视图中 - 我正在使用 HAML,因此您必须转换为 erb。
js 看起来像这样:
这是在 PartsController 中调用的方法:
end
end
它需要一些工作来向用户提供反馈,但这对我来说很有效。
Here's my solution that is based on the article mentioned by Silviu. I'm sorting parts that belong_to lessons, hence the inclusion of the lessonID.
This is in the view - I'm using HAML so you'll have to convert to erb.
The js looks like this:
and here is the method that is called in the PartsController:
end
end
It needs some work on giving feedback to the user, but does the trick for me.