Hi - first of all this is a plugin-specific question (about treeview) - i sent it to the plugin discussion page but it seems pretty dead (no posts for over a year), so i'm sending it here as well. If anyone could help me out that would be fantastic.
I've been using treeview and have no problems with it so far. However, to get better performance i'm now trying to switch to the asynchronous version: http://jquery.bassistance.de/treeview/demo/async.html In the example they use php to return some json to the tree, but i'm using it in a ruby on rails app, and can;t work out how to get it to work. Can anyone help? I'm really just not sure how to get the required json for the update back to the treeview. This is what i'm doing at the moment: In the view: jQuery(document).ready(function(){ jQuery("#prop-tree").treeview({ url: "tree/self_and_children" }); }); ... <ul id="prop-tree"> </ul> The url "tree/self_and_children" does seem to be calling the correct controller and action, which is as follows: def self_and_children # expects the id of the branch which is clicked on, which will be something like # "property_id_79". We want property with id 79. if params[:id] property = Property.find(params[:id].split("_").last) else property = Property.root end @json = property.self_and_children_to_json respond_to do |format| if @json #should never get an html request for this format.html { render :text => @json } format.xml { head :ok } format.js { render :text => @json } else format.html { } format.xml { render :xml => @json.errors, :status => :unprocessable_entity } format.js end end end But, nothing comes back - at least, the tree doesn't change. My questions are as follows: a) is doing "render :text => @json" the proper way to send back the chunk of json to treeview? Should i do something in a js.rjs file instead? b) how do i send through the id of the clicked-on branch to the controller? (and retrieve it in the controller) thanks in advance max
