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  • Fastest Strategy for Drawing Flash Particles

    - by user146543
    I am wondering what the fastest approach might be for using Flash/AS3 to render a 2D point plot (sonar lofargram) ; basically screens full of tiny 2D dots using Flash as fast as possible. Any suggestions on where to start? Is Flash capable of displaying 10's of thousands of 2D points (or more) with an acceptable fps?

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  • XSLT disable output escaping when disable-output-escaping is not supported

    - by Moose Morals
    Hi folks, Since disable-output-escaping doesn't work on firefox (and isn't going to), whats the next best way of including raw markup in the output of an XSTL transform? (Background: I've got raw HTML in a database that I want to wrap in XML to send to a browser to render. I've got control of both the XML and the stylesheet, but no control of the HTML, which may be badly formed (even for HTML!)) Thanks

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  • Google Visualization API chart in Blogger / Blogspot

    - by gotgenes
    Is it possible to embed (chart) visualizations created by the Google Visualization API in a Blogger post? I tried stripping out the <head> and <body> tags (and closing tags) from the pie chart example, however, the pie chart visualization fails to render, even on a published post. NOTE: I'm asking about the Visualization API, rather than the Google Image Charts (Charts API).

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  • Evaluate dynamically constructed JSP at runtime

    - by Sandy
    I have a requirement where in the JSP page itself is created by the user and stored in the database. When viewing results we need to render this JSP to the client, evaluating all tags inside this JSP. I am aware that it is doable as OpenCMS and Blogger both implement this functionality. But, I just can't find the right way. Any pointers on how to do this? [Added] Note: I cannot write a temporary file on disk for the purpose :(

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  • undefined method `call' for LiquidView:Class

    - by user181186
    I trying to use Liquid template engine plugin , but I 'm getting the following error while controller tries to render a .liquid template . "undefined method `call' for LiquidView:Class" I installed it as a plugin according to http://wiki.github.com/tobi/liquid/getting-liquid-to-work-in-rails I using Rails 2.3.5 and Ruby 1.8.7. Does anyone had the same problem before ?

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  • Vaadin and Spring MVC Integration

    - by dakull
    I'm thinking about the possibility of using Spring MVC with Vaadin Framework. Are there any documented ways of making them play nicely together ? Also is it a good idea to use them together ? relating to performance; I'm going to run the app on a dedicated server. To make my question a bit more clear, how can i return a modelandview from a Spring MVC Controller that wll render using Vaadin and can access all the model data.

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  • link_to passing paramater and display problem - tag feature - Ruby on Rails

    - by bgadoci
    I have gotten a great deal of help from KandadaBoggu on my last question and very very thankful for that. As we were getting buried in the comments I wanted to break this part out. I am attempting to create a tag feature on the rails blog I am developing. The relationship is Post has_many :tags and Tag belongs_to :post. Adding and deleting tags to posts are working great. In my /view/posts/index.html.erb I have a section called tags where I am successfully querying the Tags table, grouping them and displaying the count next to the tag_name (as a side note, I mistakenly called the column containing the tag name, 'tag_name' instead of just 'name' as I should have) . In addition the display of these groups are a link that is referencing the index method in the PostsController. That is where the problem is. When you navigate to /posts you get an error because there is no parameter being passed (without clicking the tag group link). I have the .empty? in there so not sure what is going wrong here. Here is the error and code: Error You have a nil object when you didn't expect it! You might have expected an instance of Array. The error occurred while evaluating nil.empty? /views/posts/index.html.erb <% @tag_counts.each do |tag_name, tag_count| %> <tr> <td><%= link_to(tag_name, posts_path(:tag_name => tag_name)) %></td> <td>(<%=tag_count%>)</td> </tr> <% end %> PostsController def index @tag_counts = Tag.count(:group => :tag_name, :order => 'updated_at DESC', :limit => 10) @posts=Post.all(:joins => :tags,:conditions=>(params[:tag_name].empty? ? {}: { :tags => { :tag_name => params[:tag_name] }} ) ) respond_to do |format| format.html # index.html.erb format.xml { render :xml => @posts } format.json { render :json => @posts } format.atom end end

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  • zend_barcode in MVC

    - by Joaquín L. Robles
    hi people, i just want an Action to print a barcode image, but i can´t get this working in MVC, i just do the following: public function barcodeAction() { $this->_helper->layout->disableLayout(); $this->_helper->viewRenderer->setNoRender(); Zend_Barcode::render($_GET['barcodeType'], 'image', $_GET, $_GET); } but when I call /barcode?barcodeType=code39&text=ZEND-FRAMEWORK I just obtain: "The image couldn't be displayed because it has errors" (or something like that, browser-dependant). Thanks!

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  • Creating a Blog ruby on Rails - Problem Deleting Comments

    - by bgadoci
    As I always type I am new to rails and programming in general so go easy. Thanks in advance. I have successfully followed the initial tutorial from Ryan Bates on how to build a weblog in 15 minutes. If you don't know this tutorial takes you through creating posts and allowing for comments on those post. It even introduces AJAX through the creating and displaying comments on the posts show.html.erb page. All works great. Here's the hiccup, when Ryan takes you though this tutorial he clears out the comments_controller and only shows the code for creating comments. I am trying to add back the ability to edit and destroy comments. Can't see to get it to work, keeps deleting the actual post not the comment (log shows that I keep sending DELETE request to PostsController). Here is my code: class CommentsController < ApplicationController def create @post = Post.find(params[:post_id]) @comment = @post.comments.create!(params[:comment]) respond_to do |format| format.html { redirect_to @post } format.js end end def destroy @comment = Comment.find(params[:id]) @comment.destroy respond_to do |format| format.html { redirect_to(posts_url) } format.xml { head :ok } end end end /views/posts/show.html.erb <%= render :partial => @post %> <p> <%= link_to 'Edit', edit_post_path (@post) %> | <%= link_to 'Destroy', @post, :method => :delete, :confirm => "Are you sure?" %> | <%= link_to 'See All Posts', posts_path %> </p> <h2>Comments</h2> <div id="comments"> <%= render :partial => @post.comments %> </div> <% remote_form_for [@post, Comment.new] do |f| %> <p> <%= f.label :body, "New Comment" %><br/> <%= f.text_area :body %> </p> <p> <%= f.submit "Add Comment" %></p> <% end %> /views/comments/_comment.html.erb <% div_for comment do %> <p> <strong>Posted <%= time_ago_in_words(comment.created_at) %> ago </strong><br/> <%= h(comment.body) %><br/> <%= link_to 'Destroy', @comments, :method => :delete, :confirm => "Are you sure?" %> </p> <% end %>

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  • Rails - embedded polymorphic comment list + add comment form - example?

    - by odigity
    Hey, all. Working on my first Rails app. I've searched all around - read a bunch of tutorials, articles, and forum posts, watched some screencasts, and I've found a few examples that come close to what I'm trying to do (notably http://railscasts.com/episodes/154-polymorphic-association and ep 196 about nested model forms), but not exactly. I have two models (Podcast and BlogPost) that need to be commentable, and I have a Comment model that is polymorphically related to both. The railscasts above had a very similar example (ep 154), but Ryan used a full set of nested routes, so there were specific templates for adding and editing comments. What I want to do is show the list of comments right on the Podcast or BlogPost page, along with an Add Comment form at the bottom. I don't need a separate add template/route, and I don't need the ability to edit, only delete. This is a pretty common design on the web, but I can't find a Rails example specifically about this pattern. Here's my current understanding: I need routes for the create and delete actions, of course, but there are no templates associated with those. I'm also guessing that the right approach is to create a partial that can be included at the bottom of both the Podcast and BlogPost show template. The logical name for the partial seems to me to be something like _comments.html.haml. I know it's a common convention to have the object passed to the partial be named after the template, but calling the object 'comments' seems to not match my use case, since what I really need to pass is the commentable object (Podcast or BlogPost). So, I guess I'd use the locals option for the render partial call? (:commentable = @podcast). Inside the partial, I could call commentable.comments to get the comments collection, render that with a second partial (this time with the conventional use case, calling the partial _comment.html.haml), then create a form that submits to... what? REST-wise, it should be a POST to the collection, which would be /podcast|blogpost/:id/comments, and I think the helper for that is podcast_comments_path(podcast) if it were a podcast - not sure what to do though, since I'm using polymorphic comments. That would trigger the Comment.create action, which would then need to redirect back to the podcast|blogpost path /podcast|blogpost/:id. It's all a bit overwhelming, which is why I was really hoping to find a screencast or example that specifically implements this design.

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  • Dynamically create hierachical tableview from file structure

    - by Rob M
    Hi, I have a directory structure of directories and files that I want to render as a tableview in an iphone app. I'd rather have this generated dynamically rather than have to maintain a XML PLIST or whatever. i.e. replicate the Explorer functionality in windows where a user can traverse the structure and then select bundled image files for viewing. Is there any way to do this? Any advice would be appreicated.

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  • how to set mediatype for prreview pin vc++ directshow

    - by Sathis
    hai.. am writing simple appliaction for capture and rendering video in vc++ .and i set meadiatype for capture pin RGB24 AND 640*480 image size. Image is captured thats size.but i cant rendering preview.if i render that i get BLACk PREVIEW only.i checked also in GRAPH EDIT tool.but i cant get. am using wcsa400 card type cam and .net 2005 pl kindly help me.

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  • QWebView problem rendering embedded fonts

    - by user313724
    Hi, I'm trying to render a web page, in QT 4.5, that uses an embedded font. Most of the time this works as expected. Unfortunately, sometimes I get really weird behaviour. The font is rendered - apparently - off-by-one. For instance the text: "By" woukd appear as "Cz" Has anyone run into this before? And - more importantly - knows how to fix this?

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  • Custom paging using GridView

    - by Anil Namde
    I have followed this article to implement the custom pagination using GridView. I have also done custom pagination using the DataGrid but i am still confused on following things. DataGrid which is there in the ASP.NET 1.1 having VirtualPageCount (something similar) which is set to render the pagination interface [1 2 3 4 5 ... something like this] GridView does not have the above mentioned property then how to generate the pagination UI?

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  • How to use global view files in Zend Framework?

    - by terrani
    Hi, I am trying to use global or shared view files. Let's say I have a module in Application/Modules/default and I have "IndexController.php" inside "default/controllers" within "IndexController", I would like to render a view that is located in "Application/Views". I tried to use addScriptPath, but Zend_View tries to look "Application/Views/index" directory. How do I eliminate "index" ?

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  • Nested attributes in the index view?

    - by user283179
    I seem to be getting error: uninitialized constant Style::Pic when I'm trying to render a nested object in to the index view the show view is fine. class Style < ActiveRecord::Base #belongs_to :users has_many :style_images, :dependent => :destroy accepts_nested_attributes_for :style_images, :reject_if => proc { |a| a.all? { |k, v| v.blank?} } #found this here http://ryandaigle.com/articles/2009/2/1/what-s-new-in-edge-rails-nested-attributes has_one :cover, :class_name => "Pic", :order => "updated_at DESC" accepts_nested_attributes_for :cover end class StyleImage < ActiveRecord::Base belongs_to :style #belongs_to :style_as_cover, :class_name => "Style", :foreign_key => "style_id" has_attached_file :pic, :styles => { :small => "200x0>", :normal => "600x> " } validates_attachment_presence :pic #validates_attachment_size :pic, :less_than => 5.megabytes end <% for style_image in @style.style_images %> <li><%= style_image.caption %></li> <div id="show_photo"> <%= image_tag style_image.pic.url(:normal) %></div> <% end %> As you can see from the above The main model style has many style_images, all these style_images are displayed in the show view but, in the the index view I wish to show one image which has been name and will act as a cover that is displayed for each style. in the index controller I have tried the following: class StylesController < ApplicationController layout "mini" def index @styles = Style.find(:all, :inculde => [:cover,]).reverse respond_to do |format| format.html # index.html.erb format.xml { render :xml => @styles } end end and the index <% @styles.each do |style| %> <%=image_tag style.cover.pic.url(:small) %> <% end %> class StyleImage < ActiveRecord::Base belongs_to :style #belongs_to :style_as_cover, :class_name => "Style", :foreign_key => "style_id" has_attached_file :pic, :styles => { :small => "200x0>", :normal => "600x> " } validates_attachment_presence :pic #validates_attachment_size :pic, :less_than => 5.megabytes end In the style_images table there is an cover_id also. From the about you can see that I have included the cover in the controller and the model. I have know idea where I'm going wrong here! If any one can help please do!

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  • Hosting Mecurial HG via VisualSVN Server

    - by dvkwong
    I have tried to host a Mercurial HG repository using a Scriptalias. ScriptAlias /hg/ "htdocs/hgwebdir.cgi" If I go to Chrome it display the contents of the cgi file. In IE it does render however images and links are not displayed. In either case the repository I want to display is not shown. Has anyone managed to get this working with VisualSVN? Also will this work if I have windows authentication and https? Thanks David

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  • Disable a textbox using CSS

    - by Balaji
    How to disable a textbox in CSS? Currently we are having a textbox in our view which can be enabled/disabled depending on a property in the model. We are having asp.net MVC view; depending on the value of the Model property we need to either render a textbox or readonly textbox. we were thinking of doing this by applying CSS to the view control. Has someone done this earlier?

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  • Graph layouting with Perl

    - by jonny
    Ok, I have a flowchart definition (basically, array of nodes and edges for each node). Now I want to calculate coordinates for every task in the flow, preferably hierarchycal style. I need something like Graph::Easy::Layout but I have no idea how to get nodes coordinates: I render nodes myself and I only want to retrieve box coordinates/size. Any suggestions? What I need is a cpan module avialable even in Debian repository.

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  • Why aren't the :locals hash variables being passed in to a partial, when called from inside my rake

    - by marshally
    I need to render a bunch of painfully long running partials using a rake task. When I try to pull the partial from a rake task, I get the dreaded "Called id for nil, which would mistakenly be 4" error, which usually means that my locals hash has not been properly set into the partial. Here's the rake task (some variable names have been changed to protect the innocent): namespace :precache do desc "Precache stuff" task :precache => :environment do av = ActionView::Base.new(Rails::Configuration.new.view_path, {}) av.class_eval do include ApplicationHelper end @user = User.find(21) @rank = Rank.find(2) data = av.render(:partial => "reports/listing", :locals => {:user => @user, :rank => @rank}) end end And this is the error that I am getting: ** Execute precache:precache rake aborted! Called id for nil, which would mistakenly be 4 -- if you really wanted the id of nil, use object_id On line #1 of app/views/reports/listing.html.erb 1: <%- @rid = @rank.id %> 2: <%- @cid = @user.id %> 3: <%- cache(:action => 'reports', :key => [arg1, arg2, arg3] ) do %> 4: <%- app/views/reports/_downline_js.html.erb:1 lib/tasks/precache_fragments.rake:12 rake (0.8.7) lib/rake.rb:636:in `call' rake (0.8.7) lib/rake.rb:636:in `execute' rake (0.8.7) lib/rake.rb:631:in `each' rake (0.8.7) lib/rake.rb:631:in `execute' rake (0.8.7) lib/rake.rb:597:in `invoke_with_call_chain' /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize' rake (0.8.7) lib/rake.rb:590:in `invoke_with_call_chain' rake (0.8.7) lib/rake.rb:583:in `invoke' rake (0.8.7) lib/rake.rb:2051:in `invoke_task' rake (0.8.7) lib/rake.rb:2029:in `top_level' rake (0.8.7) lib/rake.rb:2029:in `each' rake (0.8.7) lib/rake.rb:2029:in `top_level' rake (0.8.7) lib/rake.rb:2068:in `standard_exception_handling' rake (0.8.7) lib/rake.rb:2023:in `top_level' rake (0.8.7) lib/rake.rb:2001:in `run' rake (0.8.7) lib/rake.rb:2068:in `standard_exception_handling' rake (0.8.7) lib/rake.rb:1998:in `run' rake (0.8.7) bin/rake:31 /usr/bin/rake:19:in `load' /usr/bin/rake:19 details: I'm using Rails 2.3.5 and Ruby 1.8.7. Developing on Mac OSX. Eventually I will be deploying to Heroku.

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  • JIT: How to specify source/sink for arcs?

    - by Rosarch
    I'm using JIT to render graphs. I'm using the RGraph feature. This JSON defines a graph: var json = [ { 'id': '1', 'name': 'CS 2110', 'adjacencies': ['0', '2'] }, { 'id': '1.5', 'name': 'INFO 2300', 'adjacencies': ['1'] }, { 'id': '0', 'name': 'CS 1110', 'adjacencies': ['1'] }, { 'id': '2', 'name': 'INFO 3300', 'adjacencies': ['1'] }, ] If I want a directed graph, how can I specify which nodes are sources and which are sinks?

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  • Can generateDS be used like xsd.exe

    - by BozoJoe
    Can I use generateDS.py in python in a similar way that I would use xsd.exe to create C# classes from xsd? Basically, given an xsd schema I want to create a data structure, in python, fill its data in, and then render it into an xml string. perhaps pyXSD is better? oh, and yes, I'm a python newbie

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