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  • Is Amazon SQS the right choice here? Rails performance issue.

    - by ole_berlin
    I'm close to releasing a rails app with the common networking features (messaging, wall, etc.). I want to use some kind of background processing (most likely Bj) for off-loading tasks from the request/response cycle. This would happen when users invite friends via email to join and for email notifications. I'm not sure if I should just drop these invites and notifications in my Database, using a model and then just process it with a worker process every x minutes or if I should go for Amazon SQS, storing the messages and invites there and let my worker retrieve it from Amazon SQS for processing (sending the invites / notifications). The Amazon approach would get load off my Database but I guess it is slower to retrieve messages from there. What do you think?

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  • define method for instance of class

    - by aharon
    Let there be class Example defined as: class Example def initialize(test='hey') self.class.send(:define_method, :say_hello, lambda { test }) end end On calling Example.new; Example.new I get a warning: method redefined; discarding old say_hello. This, I conclude, must be because it defines a method in the actual class (which makes sense, from the syntax). And that, of course, would prove disastrous should there be multiple instances of Example with different values in their methods. Is there a way to create methods just for the instance of a class from inside that instance? Thanks so much.

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  • Authentication in Rails, where to start?

    - by Victor P
    Hello. Im learning Rails by building apps. I want to make my first authenticated app: users signup, login, do some changes in models they have access to and logout. I did the Google search but it is quite confusing: many plugins, many tutorials. Don't know where to start. Is there a state-of-the-art authentication method for Rails? What do you use in Production to authenticate your users? Any help in this will be helpful. Thanks

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  • Rails: combining multiple find requests

    - by peppermonkey
    What I want to do is something like this: searchid = 4 while searchid != -1 @a += A.find(searchid) @b = B.find(searchid) searchid = @b.parentid end The problem being the line @a += A.find(searchid) The error being something like NoMethodError: undefined method `+' for # So, how do you combine multiple 'find' requests?

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  • Stop observe_field from observing

    - by TenJack
    I am using the rails helper observe_field to observe a the input of a textfield: <%= observe_field :word_word, :frequency => 0.25, :function => "wordObserve('#{@word_str}')" %> When the textfield input becomes a certain value, I would like to stop observing. I have tried both Event.stop() and Event.stopObserving(element, eventName, handler) but neither seem to work. Any ideas?

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  • Incorrect error

    - by jspooner
    If you assign an invalid date (like December 39th) to a datetime column ActiveRecord returns a "can't be blank" error when is should probably return an error like "Not a valid date" My question. Is this expected rails behavior, a bug or, something that I could patch? class ExerciseLog < ActiveRecord::Base validates_presence_of :scheduled_datetime end Fire up the console. e = Log.new # lets set a date for Dec 39th which obviously doesn't exist e.scheduled_datetime = "2010-12-39" e.save => false # this is the confusing message since our form did post a valid date e.errors.on(:scheduled_datetime) => "can't be blank" e.scheduled_datetime = "2010-12-30" e.save => true I discovered this issue when I accidentally transposed the month and day values. btw This is in Rails 2.3.5

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  • Rails problem with Delayed_Job and Active Record

    - by Michael Waxman
    I'm using Delayed_Job to grab a Twitter user's data from the API, but it's not saving it in the model for some reason! Please help! (code below) class BandJob < Struct.new(:band_id, :band_username) #parameter def perform require 'json' require 'open-uri' band = Band.find_by_id(band_id) t = JSON.parse(open("http://twitter.com/users/show/#{band_username}.json").read) band.screen_name = t['screen_name'] band.profile_background_image = t['profile_background_image_url'] band.url = 'http://' + band_username + '.com' band.save! end end To clarify, I'm actually not getting any errors, it's just not saving. Here's what my log looks like: * [JOB] acquiring lock on BandJob [4;36;1mDelayed::Job Update (3.1ms)[0m [0;1mUPDATE "delayed_jobs" SET locked_at = '2009-11-09 18:59:45', locked_by = 'host:dhcp128036151228.central.yale.edu pid:2864' WHERE (id = 10442 and (locked_at is null or locked_at < '2009-11-09 14:59:45') and (run_at <= '2009-11-09 18:59:45')) [0m [4;35;1mBand Load (1.5ms)[0m [0mSELECT * FROM "bands" WHERE ("bands"."id" = 34) LIMIT 1[0m [4;36;1mBand Update (0.6ms)[0m [0;1mUPDATE "bands" SET "updated_at" = '2009-11-09 18:59:45', "profile_background_image" = 'http://a3.twimg.com/profile_background_images/38193417/fbtile4.jpg', "url" = 'http://Coldplay.com', "screen_name" = 'coldplay' WHERE "id" = 34[0m [4;35;1mDelayed::Job Destroy (0.5ms)[0m [0mDELETE FROM "delayed_jobs" WHERE "id" = 10442[0m * [JOB] BandJob completed after 0.5448 1 jobs processed at 1.8011 j/s, 0 failed ... Thanks!

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  • Is there a variable in Rails that equates to the template that is being rendered?

    - by Sean Ahrens
    I can do request.path_parameters['controller'] and request.path_parameters['action'], but is there anything like request.path_parameters['template'] so I can discern which template file (such as index.html.erb) is being rendered? I'm writing a method that automatically sets the body id to the template being rendered, for easy css manipulation: class ApplicationController < ActionController::Base ... after_filter :define_body_selector ... def define_body_selector # sets @body_id to the name of the template that will be rendered # ie. if users/index.html.erb was just rendered, @body_id gets set to "index" @body_id = ??? end ...

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  • Write XML File from a flex application back to a rails Server

    - by Markus
    Hi everybody, I have a XML-file, which I want to send to a rails server. To do so I use the following code: <mx:HTTPService id="dataService" result="resultHandler(event)" resultFormat="e4x"/> In a Function triggered by a save button, I do the following: var params:Object = {}; params["xml_file"] = xmlDoc; dataService.method = "POST"; dataService.url = "http://localhost:3000/containers"; dataService.send(params); Unfortunately there is always the Problem (see below) appearing. If I remove the params var, it runs a GET Request... [RPC Fault faultString="HTTP request error" faultCode="Server.Error.Request" faultDetail="Error: [IOErrorEvent type="ioError" bubbles=false cancelable=false eventPhase=2 text="Error #2032: Stream-Fehler. URL: http://localhost:3000/containers"]. URL: http://localhost:3000/containers"] what could be the problem? Thanks for any hints! Markus

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  • Rails: validates_acceptance_of acting crazy

    - by Sleepycat
    Whats wrong with this picture? Model: validates_acceptance_of :terms_of_service, :on => :create, :accept => true, :allow_nil => false accessor :terms_of_service View: <%= check_box :organisation,'terms_of_service', {:style => "margin-left:0px"}, 1, 0 %> And in the DB I have organisations.terms_of_service. Every time I get "Terms of service must be accepted" Any ideas?

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  • What does it take to get the "LyricArtist" from this XML feed using Nokogiri?

    - by fail.
    First the xml: http://api.chartlyrics.com/apiv1.asmx//GetLyric?lyricId=90&lyricCheckSum=9600c891e35f602eb6e1605fb7b5229e doc = Nokogiri::XML(open("http://api.chartlyrics.com/apiv1.asmx//GetLyric?lyricId=90&lyricCheckSum=9600c891e35f602eb6e1605fb7b5229e")) Successfully will grab the document content. After this point i am unable to get inside and grab data and i am not sure why? For example, i would expect: doc.xpath("//LyricArtist") To kick back the artist but it does not. I have tried the same thing with other feeds, such as the default RSS feed that any wordpress installation provides and if i do something like: doc.xpath("//link") I get a list of all the "links". I am definitely missing something and would love your input. thank you!!

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  • Scheduling a Delay Job on Heroku with a Worker Dyno

    - by user1524775
    I'm currently using Heroku's scheduler to run a script. However, the time that the script takes to run is going to increase from a few milliseconds to a few minutes. I'm looking at using the delayed_job gem to push this process off to a Worker Dyno. I want to continue to run this script once-a-day, just offload it to the worker. My current rake task is: desc "This task updates some stuff for you." task :update_some_stuff => :environment do puts "Updating some stuff ..." SomeClass.new.process puts "... done." end Once the gem is installed, migration run, and worker dyno started, will the script just need to change to: desc "This task updates some stuff for you." task :update_some_stuff => :environment do puts "Updating some stuff ..." SomeClass.new.delay.process puts "... done." end With this task still being a rake task scheduled by Heroku's Scheduler, is the only thing that needs to happen here the introduction of the delay method to put this in the Worker's queue? Thanks in advance for any help.

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  • Authlogic admin subsite

    - by MrThomas
    Following this tutorial getting the following errors: NameError in Admin/dashboardsController#show uninitialized constant Admin::DashboardsController NameError in Admin sessionController#new uninitialized constant Admin::AdminHelper not sure how to correct this!

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  • Rails on IronRuby (IIS 6)

    - by Fossmo
    I'm trying to get Rails running on a IIS 6 webserver using IronRuby, but without success. I have followed this webcast and got it running on IIS 7, but can't make it work on a IIS 6 server. I need some help to get this to work. Any ideas?

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  • declarative_authorization permissions on roles

    - by William
    Hey all, I'm trying to add authorization to a rather large app that already exists, but I have to obfuscate the details a bit. Here's the background: In our app we have a number or roles that are hierarchical, roughly like this: BasicUser -> SuperUser -> Admin -> SuperAdmin For authorization each User model instance has an attribute 'role' which corresponds to the above. We have a RESTful controller "Users" that is namespaced under Backoffice. So in short it's Backoffice::UsersController. class Backoffice::UsersController < ApplicationController filter_access_to :all #... RESTful actions + some others end So here's the problem: We want users to be able to give permissions for users to edit users but ONLY if they have a 'smaller' role than they currently have. I've created the following in authorization_rules.rb authorization do role :basic_user do has_permission_on :backoffice_users, :to => :index end role :super_user do includes :basic_user has_permission_on :backoffice_users, :to => :edit do if_attribute :role => is_in { %w(basic_user) } end end role :admin do includes :super_user end role :super_admin do includes :admin end end And unfortunately that's as far as I got, the rule doesn't seem to get applied. If I comment the rule out, nobody can edit If I leave the rule in you can edit everybody I've also tried a couple of variations on the if_attribute: if_attribute :role => is { 'basic_user' } if_attribute :role => 'basic_user' and they get the same effect. Does anybody have any suggestions?

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  • rails controller defaults to respond with application/xml in production

    - by Dave Paroulek
    I have a standard contacts_controller.rb with index action that responds as follows: respond_to do |format| format.html format.xml { render :xml => @contacts } end In development, it works as intended: when I browse to http://localhost:3000/contacts, I get an html response. But, when I start the app using capistrano on a remote Ubuntu server and browse to the same url, I get an xml response. If I go to http://remote_host:8000/contacts.html, then I see the html response. If I comment out the format.xml { render :xml => @contacts }, then I see the desired html response. Pretty sure I'm missing something subtle about difference between Rails development and production modes. Any ideas about what I'm overlooking? Thanks, - Dave

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  • saving nested attributes

    - by Victor Martins
    I have a form that has a nested form like this: <%- for subscription in @task.subscriptions -% <%- semantic_fields_for "task[subscription_attributes][]", subscription do |subscription_form|% <%- subscription_form.inputs do -% <%= subscription_form.input :workhours, :label = subscription.user.full_name% <%- end -% <%- end -% <%- end -% And on the task model I have: accepts_nested_attributes_for :subscriptions attr_accessible :mission_id, :statuscode_id, :name, :objectives, :start_at , :end_at, :hours, :testimony ,:subscriptions_attributes In the form (view) I get the correct values on the workhours fields. But when I change the values and hit the submit button, the values are never changed. I can't figure out why...

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  • Rails: How do I get created_at to show the time in my current time zone?

    - by Schneems
    Seems that when i create an object, the time is not correct. You can see by the script/console output below. Has anyone encountered anything like this, or have any debugging tips? >> Ticket.create(...) => #<Ticket id: 7, from_email: "[email protected]", ticket_collaterals: nil, to_email: "[email protected]", body: "hello", subject: "testing", status: nil, whymail_id: nil, created_at: "2009-12-31 04:23:20", updated_at: "2009-12-31 04:23:20", forms_id: nil, body_hash: nil> >> Ticket.last.created_at.to_s(:long) => "December 31, 2009 04:23" >> Time.now.to_s(:long) => "December 30, 2009 22:24"

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  • How to write SQL query as named_scope?

    - by keruilin
    How can I translate the following SQL query into a named_scope? select users.*, sum(total_quantity * total_price) as points_spent from orders join users on users.id = orders.user_id where pay_type = 'points' group by user_id order by points_spent desc Thanks!

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  • Howto: Access a second related model in a nested attribute builder block

    - by Joe Cairns
    I have a basic has_many through relationship: class Foo < ActiveRecord::Base has_many :bars, :dependent => :destroy has_many :wtfs :through => :bars accepts_nested_attributes_for :bars, :wtfs end On my crud forms I have a builder block for the wtf, but I need the label to come from the bar (an attribute called label for instance). What's the proper method to do this? Here's the most simple scaffold: <h1>New foo</h1> <% form_for(@foo) do |f| %> <%= f.error_messages %> <p> <%= f.label :name %><br /> <%= f.text_field :name %> </p> <h2>Bars</h2> <% f.fields_for :wtfs do |builder| %> <%= builder.hidden_field :bar_id %> <p> <%= builder.text_field :wtf_data_i_need_to_set %> </p> <% end %> <p> <%= f.submit 'Create' %> </p> <% end %> <%= link_to 'Back', foos_path %>

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