<p>How about some ajaxified links or buttons?</p>
<p>Inside your <span class="caps">DRYML</span> you can do this</p>
<pre>
<code>
<%= link_to_remote( "remove project",
:url => { :action => :rem_proj, :id => this.id } )
%>
</code>
</pre>
<p>Which creates a link to call a custom controller method rem_proj. So in the controller we will need:</p>
<pre>
<code>
class UsersController < ApplicationController
def rem_proj
mp = Project.find(params["id"])
mp.status = "hidden"
mp.save
end
</code>
</pre>
<p>But what if you want a partial update on the page to make the hidden project disappear? Lets define a tag for the content of this page in app/views/taglib/application.dryml<br />
<pre><br />
<code>
<def tag="user-projects"></p>
<section part="userproject">
<section if="&(not (@new_projects.nil? or @new_projects.length==0))">
<h1>New Projects</h1>
<table-plus with="&@new_projects" fields="this,activity_type,done_by">
<header: replace/>
<p><controls:><br />
<%= link_to_remote( “remove project”,<br />
:update => “userproject”,<br />
:url => { :action => :rem_proj, :id => this.id } )<br />
%></p>
</controls:>
<p><empty-message:><br />
No projects</p>
</empty-message:>
</table-plus>
</section>
<p></p>
</section>
</def>
<p></code><br />
</pre></p>
<p>And then call it from the show.dryml</p>
<pre>
<code>
<show-page>
<content-body:>
<user-projects/>
</content-body:>
</show-page>
</code>
</pre>
<p>Now for the controller code:<br />
<pre><br />
<code>
def show
@user = current_user
@new_projects = @user.new_projects if params["sort"].nil?
@new_projects = @user.new_projects.sort
{|a,b| a[params["sort"]] <=> b[params["sort"]]} unless params["sort"].nil?
end</p>
def rem_proj
mp = Project.find(params[“id”].to_s)
mp.status = “hidden”
mp.save
@user = current_user
@new_projects = @user.new_projects
render :partial => “userproject”, :object => @new_projects
end
<p></code><br />
</pre><br />
Note the “userproject” we will need a partial template for this.</p>
<p>The template gets named _userporject.dryml and goes in the views/<model> directory for the controller.<br />
<em>userproject.dryml<br />
<pre><br />
<code>
<%
@new</em>projects = userproject<br />
%></p>
<user-projects/>
<p></code><br />
</pre></p>
<p>Now when the user clicks the link_to_remote control it will ajax a request to the server and then receive and updated partial page with the hidden record removed.</p>
<p>There is more going on here than I have described so email the hobo-users google group if you have questions.</p>
2008-10-13T15:19:45-07:00
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