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• Next, Previous Records Using Named Scope

  - by keruilin

  I have a model for which I want to retrieve the next record(s) and previous record(s). I want to do this via a named_scope on the model, and also pass in as an argument the X number of next/previous records to return. For example, let's say I have 5 records: Record1 Record2 Record3 Record4 Record5 I want to be able to call Model.previous or Model.previous(1) to return Record2. Similarly, I want to be able to call Model.next or Model.next(1) to return Record4. As another example I want to be able to call Model.previous(2) to return Record3. I think you get the idea. How can I accomplish this?

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• Shoes packager problem

  - by DorianG

  Hi, I used packager to make an executable file for the following code: Shoes.app do stack :margin => 10 do @edit = edit_box :width => 1.0 do @para.text = @edit.text end @para = para "" end end then I got error message: Error in C:/Program Files/Common Files/Shoes/0.r1134/lib/shoes.rb line 394utf.rb: 10: compiler error utf.rb: 10: Invalid char '\377' in expression utf.rb: 10: Invalid char '\337' in expression utf.rb: 10: Invalid char '\337' in expression utf.rb: 10: Invalid char '\331' in expression utf.rb: 10: Invalid char '\377' in expression utf.rb: 10: Invalid char '\270' in expression utf.rb: 10: Invalid char '\304' in expression Could someone give me a hand? BR, DorianG

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• Basecamp API Rails

  - by dannymcc

  Hi Everyone, I was wondering if someone could do me massive favour.. I really don't understand how to make use of API's - so I was wondering if, using Basecamp as an example, someone could talk me though the basics. So far I have an application with a dashboard controller/view, I have put basecamp.rb into my /lib directory, added the following to my application_controller: def basecamp_connect Basecamp.establish_connection!('XXXXXX.basecamphq.com', 'USER', 'PASS', false) @basecamp = Basecamp.new end Obviously changing the required parts to my credentials. Next up I have added the following to my dashboard_controller: def index Basecamp::TodoList.find(:all) end Next I presume I have to somehow list the Todo's on the dashboard using some sort of loop. Am I doing the right thing, if so - how on earth do I display all the todo items and if not - what am I doing wrong/missing. It doesn't have to be todo's, anything from basecamp or any other popular API service would be a good start. It's just that I happen to have a basecamp account! Thanks, Danny

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• Red Box is not working

  - by palani

  Hi , I have install the Red box plugin by using the following command script/plugin install svn://rubyforge.org/var/svn/ambroseplugins/redbox . It installed successfully. and again ran the following command the following location /myapp/vendor/plugin/redbox/rake update_scripts . It shows me the following output (in /myapp/vendor/plugins/redbox) rake aborted! private method `copy' called for File:Class /home/myapp/vendor/plugins/redbox/Rakefile:28 (See full trace by running task with --trace) I don't know How to solve this ... Then i understand that "rake update_scripts" copying the Js and Css file only. so i manually copied the Redbox.js & redbox.css files into the respective places under /public folder I include the follwoing into my application.html.erb <%= stylesheet_link_tag 'redbox' % <%= javascript_include_tag :defaults % <%= javascript_include_tag 'redbox' % It included in the page successfully. The following is my view code : <%= link_to_remote_redbox('Red_box', :url = {:action= 'log'} ,:method ='get') % The popup box doesn't appear. I have no clue what is the exact error. Is that any Jquery clash? Please help me

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• Rails: Preventing Duplicate Photo Uploads with Paperclip?

  - by neezer

  Is there anyway to throw a validation error if a user tries to upload the same photo twice to a Rails app using Paperclip? Paperclip doesn't seem to offer this functionality... I'm using Rails 2.3.5 and Paperclip (obviously).

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• Data migration from site5 to heroku

  - by Denis

  Hi, I've a Rails 2.1.2 App hosted on site 5. This App is running since 2 years and I want to migrate the site on heroku. No pb to install the site on heroku, but what about the data?! What is the best strategy to export from site 5 (I've phpMyAdmin) and then import to heroku? Thanks

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• rails best practices where to place unobtrusive javascript

  - by nathanvda

  Hi there, my rails applications (all 2.3.5) use a total mix of inline javascript, rjs, prototype and jquery. Let's call it learning or growing pains. Lately i have been more and more infatuated with unobtrusive javascript. It makes your html clean, in the same way css cleaned it up. But most examples i have seen are small examples, and they put all javascript(jquery) inside application.js Now i have a pretty big application, and i am thinking up ways to structure my js. I like somehow that my script is still close to the view, so i am thinking something like orders.html.erb orders.js where orders.js contains the unobtrusive javascript specific to that view. But maybe that's just me being too conservative :) I have read some posts by Yehuda Katz about this very problem here and here, where he tackles this problem. It will go through your js-files and only load those relevant to your view. But alas i can't find a current implementation. So my questions: how do you best structure your unobtrusive javascript; manage your code, how do you make sure that it is obvious from the html what something is supposed to do. I guess good class names go a long way :) how do you arrange your files, load them all in? just a few? do you use content_for :script or javascript_include_tag in your view to load the relevant scripts. Or ... ? do you write very generic functions (like a delete), with parameters (add extra attributes?), or do you write very specific functions (DRY?). I know in Rails 3 there is a standard set, and everything is unobtrusive there. But how to start in Rails 2.3.5? In short: what are the best practices for doing unobtrusive javascript in rails? :)

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• if_attribute syntax problem on declarative_authorization

  - by Victor Martins

  I have an Organization that has_many Affiliations And a mission that has_one Organization So i can do this: m = Mission.first m.organization.affiliations A user also has_many affiliations so I can do: u = User.first u.affiliations In declarative_authorization I want a user to be able to manage a mission if he is affiliated to the organization of the mission. I'm trying this: has_permission_on :missions, :to => [:manage] do if_attribute [:affiliations, {:mission => :organization} ] => intersects_with { user.affiliations.type_admin } end But I get the error: [:affiliations, {:mission=>:organization}] is not a symbol What's wrong with the syntax?

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• Twitter Oauth GMT / BST problem

  - by Andrei Serdeliuc

  I keep getting 401 when trying to login via Oauth with Twitter. I'm using twitter_oauth-0.3.3 with oauth-0.3.6 in rails It used to work perfectly some time ago, so after some digging, I realised it might have something to do with my timezone. In the headers of the Twitter response, one of them is: date: - Sun, 11 Apr 2010 16:53:34 GMT Even though the time is actually 17:53:34 BST I'm assuming the request is signed using BST time, and so it fails. Anyone had this problem / found a fix for it?

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• Add querystring parameters to link_to

  - by Craig

  I'm having difficultly adding querystring parameters to link_to UrlHelper. I have an Index view, for example, that has UI elements for sorting, filtering, and pagination (via will_paginate). The will_paginate plugin manages the intra-page persistence of querystring parameters correctly. Is there an automatic mechanism to add the querystring parameters to a give named route, or do I need to do so manually? A great deal of research on this seemingly simple construct has left me clueless.

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• undefined method `user_sessions_path' for #<ActionView::Base:0xdb3158>

  - by mrbernz

  I'm getting this error that's driving me up the wall. I don't see what's going on... I've followed instructions to the T and it's still complaining - help please!! I've got extracts of the error message, controller file, login page and routes file. Error message NoMethodError in User_sessions#new Showing app/views/user_sessions/new.html.erb where line #4 raised: undefined method `user_sessions_path' for # Extracted source (around line #4): 1: 2: User Login 3: 4: <% form_for @user_session do |f| % 5: <%= f.error_messages % 6: 7: controller/user_sessions_controller.rb class UserSessionsController < ApplicationController before_filter :require_no_user, :only = [:new, :create] before_filter :require_user, :only = :destroy def new @user_session = UserSession.new end def create @user_session = UserSession.new(params[:user_session]) if @user_session.save flash[:notice] = "Login successful!" redirect_to root_url #redirect_back_or_default account_url else render :action = :new end end def destroy current_user_session.destroy flash[:notice] = "Logout successful!" redirect_to root_url #redirect_back_or_default account_url end end user_sessions/new.html.erb User Login <% form_for @user_session do |f| % <%= f.error_messages % <%= f.label :Email % <%= f.text_field :email % <%= f.label :Password % <%= f.password_field :password % <%= f.submit "Submit" % <% end % routes.rb file ActionController::Routing::Routes.draw do |map| map.login "login", :controller = "user_sessions", :action = "new" Am I look in in the wrong place??

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• Refer to similar associated models with a common name

  - by Horace Loeb

  I have these models: class Bill < ActiveRecord::Base has_many :calls has_many :text_messages end class Call < ActiveRecord::Base belongs_to :bill end class TextMessage < ActiveRecord::Base belongs_to :bill end Now, in my domain calls and text messages are both "the same kind of thing" -- i.e., they're both "bill items". So I'd like some_bill.bill_items to return all calls and text messages associated with that bill. What's the best way to do this?

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• How to solve rake tasks deprecation on the rails plugin?

  - by Dida

  Because of the concept introduced in here, Rails::Plugin is nothing more than a Rails::Engine, but since it's loaded too late in the boot process, it does not have the same configuration powers as a bare Rails::Engine. Opposite to Rails::Railtie and Rails::Engine, you are not supposed to inherit from Rails::Plugin. Rails::Plugin is automatically configured to be an engine by simply placing inside vendor/plugins. Since this is done automatically, you actually cannot declare a Rails::Engine inside your Plugin, otherwise it would cause the same files to be loaded twice. This means that if you want to ship an Engine as gem it cannot be used as plugin and vice-versa. Besides this conceptual difference, the only difference between Rails::Engine and Rails::Plugin is that plugins automatically load the file "init.rb" at the plugin root during the boot process. rake tasks in the rails plugins are deprecated and it is advised to use lib/tasks instead. How to solve this? Can I just simply move the plugin's tasks to the lib/tasks?

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• Regex issue with comma's telling me there are 6 args, instead of intended 4

  - by Azher

  I have a scenario outline table that looks like the following: Scenario Outline: Verify Full ad details Given I am on the xxx classified home page And I have entered <headline> in the search field & clicked on search When I click on full details Then I should see <headline> <year> <mileage> <price> displaying correctly and successfully Examples: |headline |year |mileage |price | |alfa romeo 166 |2005 |73,000 |6,990 | When I run my scenario it spits out that I have 6 args. But what I thought, I should only have 4 args: headline, year, mileage and price. I am thinking that it is taking the comma's and what is before and after it as two seperate args. Is there any way that I can make cucumber think that there are only 4 args with the example below? I have looked at messing around with regex but I dont seem to be getting anywhere. Any help would be greatly appreciated.

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• Issues with Rails, Amazon S3, and protected URLs

  - by Shpigford

  So I followed this little tutorial about protecting downloads of files that are uploaded to Amazon S3 with Paperclip. When I've developed locally, it's worked fine, but since pushing the exact same code to a production server...I now get this error from Amazon when I try to access the files: <Error> <Code>InvalidArgument</Code> <Message>Either the Signature query string parameter or the Authorization header should be specified, not both</Message> <ArgumentValue>Basic dGVjaHVrdWxlbGU6ZWxlbHVrdWhjZXQ=</ArgumentValue> <ArgumentName>Authorization</ArgumentName> <RequestId>F6E455857C54F95A</RequestId> <HostId>X4QA2pw9wpHtJtJ2T8qxCyINjq4PLHQVF4VrlYjpX7Ayh694BgQprh5p8H7NRCAt</HostId> </Error> Example URL: http://s3.amazonaws.com/media.example.com/assets/videos/1/original.mov?AWSAccessKeyId=MY_ACCESS_KEY&Expires=1271972624&Signature=7wWH2WYHPO0o9szwPJbimUMqAig%3D That URL is generated using AWS::S3::S3Object.url_for using the aws-s3 gem. So...not even sure where to start. The fact that it works fine when the app is running locally but not when in production really doesn't make sense. The production server is running Ubuntu 8.04.4 LTS (Hardy).

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• Authlogic OpenID: Fetching E-Mail from Provider.

  - by Shripad K

  This is a really weird problem: I have set up the authlogic_openid_selector_example app. When i register, the email id is not returned by the openid provider the first time. But if i delete the account and register again, the email id is returned. But this doesn't seem to be happening in the example hosted here: http://big-glow-mama.heroku.com/. How do i fix this problem? Has this got to do with caching? I have hosted my version of the app here: http://pingauthtest.heroku.com/ I guess the author of authlogic_openid_selector_example app (@holden) has forgotten to commit new changes. :) I looked at my development log and the first time the provider doesn't return the openid.ext1.value.ext0 which contains the email id. This is returned the second time only after having deleted the account first. Edit: This is some extra info for debugging: THIS IS WHEN IT REGISTERS: OpenIdAuthentication::Association Load (5.3ms) SELECT * FROM "open_id_authentication_associations" WHERE ("open_id_authentication_associations"."server_url" = E'https://www.google.com/accounts/o8/ud') Generated checkid_setup request to https://www.google.com/accounts/o8/ud with assocication AOQobUde_9BUnQsk91rb_Sf9tguJ-S7Gpkwahc-nvDGDYAC8nphisNqu Redirected to https://www.google.com/accounts/o8/ud? openid.assoc_handle=AOQobUde_9BUnQsk91rb_Sf9tguJ-S7Gpkwahc-nvDGDYAC8nphisNqu &openid.ax.mode=fetch_request &openid.ax.required=ext0 &openid.ax.type.ext0=http%3A%2F%2Faxschema.org%2Fcontact%2Femail &openid.claimed_id=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0%2Fidentifier_select &openid.identity=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0%2Fidentifier_select &openid.mode=checkid_setup &openid.ns=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0 &openid.ns.ax=http%3A%2F%2Fopenid.net%2Fsrv%2Fax%2F1.0 &openid.ns.sreg=http%3A%2F%2Fopenid.net%2Fextensions%2Fsreg%2F1.1 &openid.realm=http%3A%2F%2Flocalhost%3A3000%2F &openid.return_to=http%3A%2F%2Flocalhost%3A3000%2Faccount%3Ffor_model%3D1%26_method%3Dpost%26open_id_complete%3D1 &openid.sreg.required=email Completed in 3574ms (DB: 14) | 302 Found [http://localhost/account] THIS IS WHEN IT USES SESSIONS: OpenIdAuthentication::Association Load (5.3ms) SELECT * FROM "open_id_authentication_associations" WHERE ("open_id_authentication_associations"."server_url" = E'https://www.google.com/accounts/o8/ud') Generated checkid_setup request to https://www.google.com/accounts/o8/ud with assocication AOQobUde_9BUnQsk91rb_Sf9tguJ-S7Gpkwahc-nvDGDYAC8nphisNqu Redirected to https://www.google.com/accounts/o8/ud? openid.assoc_handle=AOQobUde_9BUnQsk91rb_Sf9tguJ-S7Gpkwahc-nvDGDYAC8nphisNqu &openid.ax.mode=fetch_request &openid.claimed_id=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0%2Fidentifier_select &openid.identity=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0%2Fidentifier_select &openid.mode=checkid_setup &openid.ns=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0 &openid.ns.ax=http%3A%2F%2Fopenid.net%2Fsrv%2Fax%2F1.0 &openid.ns.sreg=http%3A%2F%2Fopenid.net%2Fextensions%2Fsreg%2F1.1 &openid.realm=http%3A%2F%2Flocalhost%3A3000%2F &openid.return_to=http%3A%2F%2Flocalhost%3A3000%2Fuser_session%3Ffor_session%3D1%26_method%3Dpost%26open_id_complete%3D1 Completed in 2708ms (DB: 15) | 302 Found [http://localhost/user_session]

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• form_tag for search model

  - by kip

  I have a search controller which is to be used to search over a separate model called house. The house model has a restful setup. I want the results listed on the index action of the search controller. The form_tag url is giving me some problems. What is the correct path for this? Below is the search form (search/form): <% form_tag index_search do -%> <p> <%= collection_select(:house, :category_id, Category.all, :id, :name) %> </p> <p> <strong>price</strong><br /> <%= text_field_tag :min_price, params[:min_price], :size => 3 %> <%= text_field_tag :max_price, params[:max_price], :size => 4 %>

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• Searchlogic cannot sort search result

  - by jaycode

  Imagine a code: search = Project.search( :title_or_description_or_child_name_or_child_age_or_inspiration_or_decorating_style_or_favorite_item_or_others_like_any => keys, :galleries_id_like_any => @g, :styles_id_like_any => @st, :tags_like_any => @t ) search.all returns the rows correctly. But search.descend_by_views returns nil. Is this gem buggy? What else should I use then?

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• Rails Delayed Job & Library Class

  - by Lee

  Hey we have a library class (lib/Mixpanel) that calls delayed job as follows: class Mixpanel attr_accessor :options attr_accessor :event def track!() .. dj = send_later :access_api # also tried with self.send_later .. end def access_api .. end The problem is that when we run rake jobs:work: we get the following error: undefined method `access_api' for # Any idea why?

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• #validate does not seem to work correctly with :on => :create/:update

  - by Tobias

  Greetings, I have a custom validation in my exemplary Movie model: class Movie < ActiveRecord::Base validate :it, :on => :create private def it self.errors.add 'foo', 'bar' end end This works on movie creation but also on updating an existing movie. :on => :update will also work for both. Might that be a bug or am I missing something? Best regards Tobias

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• using Control.tabs for prototype.js in Rails

  - by Elliot

  Hey everyone, I've been trying to use http://livepipe.net/control/tabs to get some javascript tabs up and running on my rails up. I'm really just trying to figure out how to install this... and I don't see how I'm running into any issues at all. Here are the steps I've taken: put tabs.js in my scripts folder made sure the layout is including all javascript files then I copied in the code for example 1, as well as the CSS from the page's style sheet. I don't get an error, but it just doesn't work. Both tabs are displayed... Any ideas?

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• How to log into a salesforce.com sandbox?

  - by wesgarrison

  I took over a Rails app and am trying to get the Salesforce.com API credentials set up for my user account. I'm set as a system admin with "Developer Mode" on (though I have no clue what that does, I just saw it set on the previous account.) We have a sandbox. I click the login link on it, enter my sandbox username ([email protected]), enter my password, and get "Login attempt has failed". I know my password is okay since I've logged into the production site several times. Using different domains (test.salesforce.com, etc) doesn't help either.

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• Parsing / Extracting Text from String in Rails?

  - by user641116

  I have a string in Rails, e.g. "This is a Twitter message. #books War & Peace by Leo Tolstoy. I love this book!", and I want to parse the text and extract only certain phrases, like "War & Peace by Leo Tolstoy". Is this a matter of using Regex and lifting the text between "#books" to "."? What if there's no structure to the message, like: "This is a Twitter message #books War & Peace by Leo Tolstoy I love this book!" or "This is a Twitter message. I love the book War & Peace by Leo Tolstoy #books" How can I reliably pull the phrase "War & Peace by Leo Tolstoy" without knowing the phrase ex ante. Are there any gems, methods, etc. that can help me do this? At the very least, what would you call what I'm trying to do? It will help me search for a solution on Google. I've tried a few searches on "parsing" with no luck.

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• fastercsv parsing to int or other into ActiveRecord

  - by Schroedinger

  I'm currently importing a CSV into an activerecord element but can't choose to parse the elements as say ints or decimals on a case by case basis using fastercsv. I can either choose to parse everything as an int or the other, or all as strings. I need to parse some columns as ints, some as decimals and some as strings. Otherwise, is there a way after I've parsed everything as strings to convert and update individual elements in the activerecord to the new form? Say parse values in as strings then convert certain values to ints, others to decs, etc?

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• how to skip before_save filter in Rails for specific command

  - by Tam

  I have a before_save defined as follows: def before_save self.token = generate_token end I want to skip it for specific save method calls. so in my code I would like to do @user.save without before_save filter getting called. Can I do that?

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