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• How can I save a webpage as an image in my rails app?

  - by Janak

  In my rails app I have a need to save some webpages and display them to the user as images. For example, how would I save www.google.com as an image?

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• How do I link to an item in the public folder from views/controller_name/page1 in Ruby on Rails?

  - by ben

  How do I link to an item in the public folder from views/controller_name/page1 in Ruby on Rails? Thanks for reading.

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• Which is a better source control with NetBeans (Ruby on Rails), VSS or Subversion?

  - by Tushar Maru

  Which is better source control with NetBeans (Ruby on Rails), VSS or subversion? I want to use source control, so I want to know which is better for NetBeans (RoR). Visual Source safe or Subversion?

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• To Interface or Not?: Creating a polymorphic model relationship in Ruby on Rails dynamically..

  - by Globalkeith

  Please bear with me for a moment as I try to explain exactly what I would like to achieve. In my Ruby on Rails application I have a model called Page. It represents a web page. I would like to enable the user to arbitrarily attach components to the page. Some examples of "components" would be Picture, PictureCollection, Video, VideoCollection, Background, Audio, Form, Comments. Currently I have a direct relationship between Page and Picture like this: class Page < ActiveRecord::Base has_many :pictures, :as => :imageable, :dependent => :destroy end class Picture < ActiveRecord::Base belongs_to :imageable, :polymorphic => true end This relationship enables the user to associate an arbitrary number of Pictures to the page. Now if I want to provide multiple collections i would need an additional model: class PictureCollection < ActiveRecord::Base belongs_to :collectionable, :polymorphic => true has_many :pictures, :as => :imageable, :dependent => :destroy end And alter Page to reference the new model: class Page < ActiveRecord::Base has_many :picture_collections, :as => :collectionable, :dependent => :destroy end Now it would be possible for the user to add any number of image collections to the page. However this is still very static in term of the :picture_collections reference in the Page model. If I add another "component", for example :video_collections, I would need to declare another reference in page for that component type. So my question is this: Do I need to add a new reference for each component type, or is there some other way? In Actionscript/Java I would declare an interface Component and make all components implement that interface, then I could just have a single attribute :components which contains all of the dynamically associated model objects. This is Rails, and I'm sure there is a great way to achieve this, but its a tricky one to Google. Perhaps you good people have some wise suggestions. Thanks in advance for taking the time to read and answer this.

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• Ruby on Rails: How do you add add zeros in front of a number if it's under 10?

  - by sjsc

  I'm looking to convert single digit numbers to two-digit numbers like so: 9 ==> 09 5 ==> 05 12 == 12 4 ==> 04 I figure I could put a bunch of if-else statements (if number is under 10, then do a gsub) but figure that's horrible coding. I know Rails has number_with_precision but I see that it only applies to decimal numbers. Any ideas on how to convert single-digits to two-digits?

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• Can I deploy a Ruby on Rails webapp to an IIS webserver?

  - by Greg

  Can I deploy a Ruby on Rails webapp to an IIS webserver? Is there any solid support for this somehow?

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• How do I change the default "www.example.com" domain for testing in rails?

  - by Denis Hennessy

  I have a rails application which acts differently depending on what domain it's accessed at (for example www.myapp.com will invoke differently to user.myapp.com). In production use this all works fine but my test code always sees a hostname of "www.example.com". Is there a clean way of having a test specify the hostname it's pretending to access?

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• In Ruby on Rails, why http://localhost:3000/foobars/alt/1.xml not work?

  - by Jian Lin

  In Ruby on Rails, http://localhost:3000/foobars/alt/1 works but http://localhost:3000/foobars/alt/1.xml doesn't work. config/route.rb is map.connect ':controller/:action/:id' map.connect ':controller/:action/:id.:format' so supposedly it supports an id.format in the URL?

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• Make Rails App Production Ready? (Hide Errors From Client)

  - by yar

  I see errors in my application like this from the web browser RuntimeError in RootController#raise_error Error test which I'd like to hide and just redirect to a static error page. What's the standard way to do that in Rails?

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• Why does FastCGI not work well with Ruby on Rails?

  - by Jian Lin

  It is said that FastCGI doesn't work well with Ruby on Rails deployment. Why is that? In previous experience, something either works quite well or it might be fundamentally wrong. So if FastCGI is a viable solution, why is it not reliable with RoR? Does FastCGI work well with most any language / frameworks?

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• Why program with php frameworks if it can be done better with rubi on rails, python or java?

  - by meyosef

  Hi, We have discussion in my job place about question (We use 1 of the php frameworks): Why program with php frameworks big web application if it can be done better with rubi on rails, python or java? Please say our opinion thanks

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• How Does Rails 3's "data-method='delete'" Degrade Gracefully?

  - by viatropos

  Rails 3 does some cool stuff to make Javascript unobtrusive, so they've done things like this: = link_to "Logout", user_session_path, :method => :delete ..converts to <a href="/logout" data-method="delete" rel="nofollow">Logout</a> But it just occurred to me.. When I turn off javascript the method isn't DELETE anymore, it's GET as expected. So are there plans to, or is there some way to, allow these data- attributes to degrade gracefully, so that link still is a DELETE request?

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• How to secure images to users logged in with Rails?

  - by NotDan

  I have a gallery in my rails app that needs to only allow certain images to be shown to specific logged in users. I am using Paperclip for image processing now, but it saves all images in a public folder available to anyone. Is it possible to only allow these images to be served to authenticated users?

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• Rails ActiveRecord - is there a way to perform operations on tables without an id?

  - by daustin777

  I have a table with one row and two columns- int 'version', datetime 'updated' Is there a Rails ActiveRecord way to get and set the data in these columns? There is no id column. I'm using this table to track versions of queries of other tables. After each query of another table the version column is incremented and the updated column is set with current datetime.

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• What is the most accepted way to implement a SOAP service in Rails 2.3?

  - by Michelle Six

  datanoise-actionwebservice was what I used last time I needed one. What is current opinion on SOAP and Rails?

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• How do I implement real time front end updates using node.js + Ruby on Rails?

  - by ming yeow

  What is the best way to implement real time updates in ruby on rails using node.js? It would be great to hear either real examples or your thoughts on alternative solutions.

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• MySQL/Rails Version Control for CMS - How is it usually done?

  - by viatropos

  How do projects like BrowserCMS for Rails implement version control for a CMS? What is best practice for version control with database content? How does it relate to git/svn?

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• Capitalize only first character of string and leave others alone? (Rails)

  - by Daniel O'Connor

  Hi, I'm trying to get Rails to capitalize the first character of a string, and leave all the others the way they are. I'm running into a problem where "i'm from New York" gets turned into "I'm from new york." What method would I use to select the first character? Thanks

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• rails howto use environment constant in models and views?

  - by fenec

  i have my constants initialized in environment.rb like this : Rails::Initializer.run do |config| ... MAX_BID = 10 end i would like to use this constant in my models and views,what is the correct syntax? if a use it a model its says NameError: uninitialized constant User::MAX_BID i understand that it is looking for the constant inside the model , how can i tell explicitly that this constant is in the environment? thanks

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• Rails: Best practice for displaying ActiveRecord validation error in XML Builder?

  - by randombits

  I'm building a RESTful API using Ruby on Rails. My models have a lot of validation happening in them. I'm wondering what is the most "RESTful" way to respond to a user in the event that they make a request that fails on the model layer. Sending a 4xx HTTP response is the first step. What's the best practice for embedding the error messages inside of XML builder?

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• How to create picture slideshows in a rails project? Flash or otherwise

  - by Janak

  In a rails project how would I create a picture slideshow? It could be generated as flash or use prototype or something else. I just want a series of images (as a sub-part of a web page, not be the whole page) to fade into each other, and to advance manually if clicked. It would be nice if I could do things like slowly zoom into the images I imagine there must be a plugin or something to handle this?

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• Does rails do a rollback if I use begin...rescue?

  - by codeman73

  I'd like to add a begin...rescue block to one of my controllers create method, in order to log better info and construct the correct error message to return to the client. Does the rescue in any way 'interrupt' the rollback process? I'm assuming rails automatically does a rollback. When does it happen? Has it already happened by the time I get in the rescue clause? I'm using mySQL on Dreamhost and I think they use innoDB.

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• Why does Rails take 15+ seconds to load on Ruby 1.9?

  - by Logan Koester

  On Ruby 1.8.7 a fresh Rails 2.3.5 environment loads in 4.325 seconds, but on Ruby 1.9.1p378 it takes 15.701s - does anyone have any ideas why? This is on a 32-bit single core laptop running Ubuntu.

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• What's the best way to run Wordpress on the same domain as a Rails application?

  - by Brian Deterling

  I've got a standard Rails app with Nginx and Mongrel running at http://mydomain. I need to run a Wordpress blog at http://mydomain.com/blog. My preference would be to host the blog in Apache running on either the same server or a separate box but I don't want the user to see a different server in the URL. Is that possible and if not, what would you recommend to accomplish the goal?

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• Rails 3: How to validate that A < B where A and B are both model attributes ?

  - by Misha Moroshko

  I would like to validate that customer_price >= my_price. I tried the following: class Product < ActiveRecord::Base attr_accessor :my_price validates_numericality_of :customer_price, :greater_than_or_equal_to => my_price ... end (customer_price is a column in the Products table in the database, while my_price isn't.) Here is the result: NameError in ProductsController#index undefined local variable or method `my_price' for #<Class:0x313b648> What is the right way to do this in Rails 3 ?

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