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  • Duplicating an array of strings.

    - by Jon
    arr = ["red","green","yellow"] arr2 = arr.clone arr2[0].replace("blue") puts arr.inspect puts arr2.inspect produces: ["blue", "green", "yellow"] ["blue", "green", "yellow"] Is there anyway to do a deep copy of an array of strings, other than using Marshal as i understand that is a hack. I could do: arr2 = [] arr.each do |e| arr2 << e.clone end but it doesn't seem very elegant, or efficient. Thanks

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  • Monitor database table for external changes from within Rails application

    - by jhwist
    I'm integrating some non-rails-model tables in my Rails application. Everything works out very nicely, the way I set up the model is: class Change < ActiveRecord::Base establish_connection(ActiveRecord::Base.configurations["otherdb_#{RAILS_ENV}"]) set_table_name "change" end This way I can use the Change model for all existing records with find etc. Now I'd like to run some sort of notification, when a record is added to the table. Since the model never gets created via Change.new and Change.save using ActiveRecord::Observer is not an option. Is there any way I can get some of my Rails code to be executed, whenever a new record is added? I looked at delayed_job but can't quite get my head around, how to set that up. I imagine it evolves around a cron-job, that selects all rows that where created since the job last ran and then calls the respective Rails code for each row.

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  • How to build an easy Rails authentication with OpenID and OAuth1.0a-2.0?

    - by Andrei
    Hi, I'am looking for an easy authentication for my users mostly via facebook, but keeping OpenID and other OAuth alternatives as well. For the case if something will go very bad, I will ask my users to optionally provide their email address, which should be obtained via OpenID or OAuth if possible. The same thing is about their name. I am a newbie in Rails, so I started with Railscasts.com #160 (authlogic) and #170 (authlogic and OpenID), however, I had some problems trying to sign in with my Google Account. As I understand, it will take some effort to adjust #170 for my objectives. On the other hand, there is gem authlogic_rpx which will possibly provide me the needed functionality (see http://rails-authlogic-rpx-sample.heroku.com/signin). What would you do? Is it reasonable to put one more step (RPX) in the authentication logic?

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  • Please explain this Rails method to me like I'm a little kid.

    - by Senthil
    I found this in Ryan Bates' railscast site, but not sure how it works. #models/comment.rb def req=(request) self.user_ip = request.remote_ip self.user_agent = request.env['HTTP_USER_AGENT'] self.referrer = request.env['HTTP_REFERER'] end #blogs_controller.rb def create @blog = Blog.new(params[:blog]) @blog.req = request if @blog.save ... I see he is saving the user ip, user agent and referrer, but am confused with the req=(request) line. Any help is appreciated. Thanks

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  • How can I change Rails view code for site visitors using SSL?

    - by pjmorse
    My Rails app has some pages which are SSL-required and others which are SSL-optional. The optional pages use some assets which are served off-site (images from a vendor) which have both http and https URLs. I need to use https when the page is accessed via SSL to avoid the dreaded "this page contains both secure and insecure elements" warning. I've written code to return the image URLs as http by default and https if requested. My problem now is determining in the view how the request came in. request.ssl? doesn't work in views. I've tried using a before_filter which sets something like @ssl_request using request.ssl?, but that also always returns false. Is there a more elegant way to do this? The server stack is Nginx and Passenger. Other apps with Apache = Mongrel stacks pass an X_FORWARDED_PROTO header to tell Rails that SSL is or isn't being used; is it possible that Nginx/Passenger doesn't do this?

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  • how do I join and include the association

    - by Mark
    Hi All, How do I use both include and join in a named scope? Post is polymorphic class Post has_many :approved_comments, :class_name => 'Comment' end class Comment belongs_to :post end Comment.find(:all, :joins => :post, :conditions => ["post.approved = ? ", true], :include => :post) This does not work as joins does an inner join, and include does a left out join. The database throws an error as both joins can't be there in same query.

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  • [Rails] Where to put this code?

    - by user305270
    [Rails] Where to put this code? I have a user1 and when another registered user2 sees the profile of user1, has some buttons on it: ['add as friend', 'give me your number', 'give me your email', 'ask her out', 'view photos']. The 1,2,3,4 are POST, with AJAX. Now, i have to make a new controller named 'ProfileActionsController' or i should put this code in the 'UsersController'? or maybe a another posiibility? thanks ;)

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  • Rails app + gmail smtp + heroku hosting + godaddy domain

    - by sagivo
    i'm trying to define a way to send emails using gmail. it all works fine on localhost but when i deploy to heroku nothing happens. i guess it has something to do with GoDaddy MX records? here is what i tried: ActionMailer::Base.smtp_settings = { :address => "smtp.gmail.com", :port => 587, :domain => "gmail.com", :user_name => "my_user", :password => "my_pass", :authentication => "plain", :enable_starttls_auto => true } i can't change the GoDaddy MX records since i'm forwording some emails from there to my Gmail account. am i missing something? EDIT- it turns out the problem was with my Gmail account. all i needed to turn off the 2-step verification. Problem solved.

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  • How do I add Polylines in gmaps4rails v2

    - by LaraF
    I upgraded to the latest version of gmaps4rails (v2) and am having some issues getting polylines drawing. I can get markers working with the sample code on the wiki, but if I change the addMarkers to addPolylines, nothing renders in the map. Here's the handler code: handler = Gmaps.build('Google'); handler.buildMap({ provider: {}, internal: {id: 'map'}}, function(){ polylines = handler.addPolylines([{"lat":45.678295,"lng":-121.603813,"ele":438.626221,"time":1381851321},{"lat":45.678196,"lng":-121.603607,"ele":423.202148,"time":1381851363},{"lat":45.678181,"lng":-121.603607,"ele":421.108398,"time":1381851373},{"lat":45.678162,"lng":-121.603584,"ele":420.153442,"time":1381851383},{"lat":45.678123,"lng":-121.603569,"ele":422.561096,"time":1381851393},{"lat":45.678165,"lng":-121.6036,"ele":425.191284,"time":1381851403},{"lat":45.678169,"lng":-121.603607,"ele":425.262329,"time":1381851413}]); handler.bounds.extendWith(polylines); handler.fitMapToBounds(); }); No errors in the javascript console, just no map rendering. Any thoughts?

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  • Tricky MySQL Query for messaging system in Rails - Please Help

    - by ole_berlin
    Hi, I'm writing a facebook style messaging system for a Rails App and I'm having trouble selecting the Messages for the inbox (with will_paginate). The messages are organized in threads, in the inbox the most recent message of a thread will appear with a link to it's thread. The thread is organized via a parent_id 1-n relationship with itself. So far I'm using something like this: class Message < ActiveRecord::Base belongs_to :sender, :class_name => 'User', :foreign_key => "sender_id" belongs_to :recipient, :class_name => 'User', :foreign_key => "recipient_id" has_many :children, :class_name => "Message", :foreign_key => "parent_id" belongs_to :thread, :class_name => "Message", :foreign_key => "parent_id" end class MessagesController < ApplicationController def inbox @messages = current_user.received_messages.paginate :page => params[:page], :per_page => 10, :order => "created_at DESC" end end That gives me all the messages, but for one thread the thread itself and the most recent message will appear (and not only the most recent message). I can also not use the GROUP BY clause, because for the thread itself (the parent so to say) the parent_id = nil of course. Anyone got an idea on how to solve this in an elegant way? I already thought about adding the parent_id to the parent itself and then group by parent_id, but I'm not sure if that works. Thanks

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  • Rails - eager load the number of associated records, but not the record themselves.

    - by Max Williams
    I have a page that's taking ages to render out. Half of the time (3 seconds) is spent on a .find call which has a bunch of eager-loaded associations. All i actually need is the number of associated records in each case, to display in a table: i don't need the actual records themselves. Is there a way to just eager load the count? Here's a simplified example: @subjects = Subject.find(:all, :include => [:questions]) In my table, for each row (ie each subject) i just show the values of the subject fields and the number of associated questions for each subject. Can i optimise the above find call to suit these requirements? I thought about using a group field but my full call has a few different associations included, with some second-order associations, so i don't think group by will work. @subjects = Subject.find(:all, :include => [{:questions => :tags}, {:quizzes => :tags}], :order => "subjects.name") :tags in this case is a second-order association, via taggings. Here's my associations in case it's not clear what's going on. Subject has_many :questions has_many :quizzes Question belongs_to :subject has_many :taggings has_many :tags, :through => :taggings Quiz belongs_to :subject has_many :taggings has_many :tags, :through => :taggings Grateful for any advice - max

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  • Spree customize/extend user roles and permissions

    - by swapnil
    I am trying to specify some custom roles in Spree for example role 'client' and extend the permissions to access the admin section for this role. This user will be able to access only those Product created by that user. Concept is letting a user with role 'client' manage only products and other certain Models. To start with I added CanCan plugin and defined a RoleAbility Class in role_ability.rb Just following this post : Spree Custom Roles Permissions class RoleAbility include CanCan::Ability def initialize(user) user ||= User.new if user.has_role? 'admin' can :manage, :all elsif user.has_role? 'client_admin' can :read, Product can :admin, Product end end end Added this to an initializer : config/initializers/spree.rb Ability.register_ability(RetailerAbility) Also extended admin_products_controller_decorator.rb :app/controllersadmin_products_controller_decorator.rb Admin::ProductsController.class_eval do def authorize_admin authorize! :admin, Product authorize! params[:action].to_sym, Product end end But I am getting flash message 'Authorisation Failure' Trying to find some luck, I referred following links A github gist for Customizing Spree Roles : https://gist.github.com/1277326 Here's a similar issue what I am facing : http://groups.google.com/group/spree-user/browse_thread/thread/1e819e10410d03c5/23b269e09c7ed47e All efforts in vain... Any pointers of what is going on here highly appreciated ? Thanks in advance.

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  • How do I get save (no exclamation point) semantics in an ActiveRecord transaction?

    - by James A. Rosen
    I have two models: Person and Address which I'd like to create in a transaction. That is, I want to try to create the Person and, if that succeeds, create the related Address. I would like to use save semantics (return true or false) rather than save! semantics (raise an ActiveRecord::StatementInvalid or not). This doesn't work because the user.save doesn't trigger a rollback on the transaction: class Person def save_with_address(address_options = {}) transaction do self.save address = Address.build(address_options) address.person = self address.save end end end (Changing the self.save call to an if self.save block around the rest doesn't help, because the Person save still succeeds even when the Address one fails.) And this doesn't work because it raises the ActiveRecord::StatementInvalid exception out of the transaction block without triggering an ActiveRecord::Rollback: class Person def save_with_address(address_options = {}) transaction do save! address = Address.build(address_options) address.person = self address.save! end end end The Rails documentation specifically warns against catching the ActiveRecord::StatementInvalid inside the transaction block. I guess my first question is: why isn't this transaction block... transacting on both saves?

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  • How to use OptionParse to allow only one flag

    - by dorelal
    There are only three ways to invoke install.sh ./install.sh ./install.sh --force ./install.sh -f I can write it easily. However I am trying to make use of OptionParse. This is what I have so far. def self.parse option = {} optparse = OptionParser.new do |opts| opts.banner = "Usage: ./install.sh [--force]" opts.on('-f', '--force', '') do |dir| option[:force] = true end end begin optparse.parse! rescue OptionParser::InvalidOption => e puts e end end How do I provide feedback to user in case user provides something other than -f or --force.

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  • rails, rest, render different action with responds to

    - by Sam
    Maybe my logic is not restful or know if this is how you would do it but this is what I am trying to do. I'm getting a category inside a category controller and then once I get that category I want to return to an index page in a different controller but keep that @category and the Category.busineses. Before rest I would have just done this: render :controller = "businesses" and it would have rendered the view of the index action in that controller. now in my respond_to block I have this format.html {redirect_to(business_path)} # index.html.erb format.xml { render :xml => @businesses } but of course with a render it looses the instance variable and starts with a new action. So what I want to do is render the action instead of redirecting to that action. is this possible?

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  • How to overcome an apparent REST vs. DRY dilemma in rails?

    - by Chris
    A rails app I'm working on features examples of quadratic equations. Obviously, these are all of a common structure: ax^2 + bx + c = 0. I don't want to store every single example of these. I'd rather generate them from a template. Storing hundreds of possible versions of this structure seems highly wasteful and un-DRY. On the other hand, if I generate them, I can't access them again reliably as I could if they were simply multiple database objects. I'm sure there must be a way to overcome this, but I'm still learning rails and I'm obviously not grasping something here. Thanks.

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  • Rails - Cant get http_accept_language gem to work in my rails project

    - by adam
    I'm internationalizing my app and I've installed the http_accept_language gem on my system I've placed config.gem 'http_accept_language' into my environment.rb file but every time I try to run this code in my controller request.user_preferred_languages it complains of no method error. There are no other instructions on the readme on github... am I missing something? EDIT - Problem solved. after a good nights sleep I came back and realised I hadnt restarted the server. I hate it when that happens.

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  • Unicorn_init.sh cannot find app root on capistrano cold deploy

    - by oFca
    I am deploying Rails app and upon running cap deploy:cold I get the error saying * 2012-11-02 23:53:26 executing `deploy:migrate' * executing "cd /home/mr_deployer/apps/prjct_mngr/releases/20121102225224 && bundle exec rake RAILS_ENV=production db:migrate" servers: ["xxxxxxxxxx"] [xxxxxxxxxx] executing command command finished in 7464ms * 2012-11-02 23:53:34 executing `deploy:start' * executing "/etc/init.d/unicorn_prjct_mngr start" servers: ["xxxxxxxxxx"] [xxxxxxxxxx] executing command ** [out :: xxxxxxxxxx] /etc/init.d/unicorn_prjct_mngr: 33: cd: can't cd to /home/mr_deployer/apps/prjct_mngr/current; command finished in 694ms failed: "rvm_path=$HOME/.rvm/ $HOME/.rvm/bin/rvm-shell '1.9.3-p125@prjct_mngr' -c '/etc/init.d/unicorn_prjct_mngr start'" on xxxxxxxxxx but my app root is there! Why can't it find it? Here's part of my unicorn_init.sh file : 1 #!/bin/sh 2 set -e 3 # Example init script, this can be used with nginx, too, 4 # since nginx and unicorn accept the same signals 5 6 # Feel free to change any of the following variables for your app: 7 TIMEOUT=${TIMEOUT-60} 8 APP_ROOT=/home/mr_deployer/apps/prjct_mngr/current 9 PID=$APP_ROOT/tmp/pids/unicorn.pid 10 CMD="cd $APP_ROOT; bundle exec unicorn -D -c $APP_ROOT/config/unicorn.rb - E production" 11 # INIT_CONF=$APP_ROOT/config/init.conf 12 AS_USER=mr_deployer 13 action="$1" 14 set -u 15 16 # test -f "$INIT_CONF" && . $INIT_CONF 17 18 old_pid="$PID.oldbin" 19 20 cd $APP_ROOT || exit 1 21 22 sig () { 23 test -s "$PID" && kill -$1 `cat $PID` 24 } 25 26 oldsig () { 27 test -s $old_pid && kill -$1 `cat $old_pid` 28 } 29 case $action in 30 31 start) 32 sig 0 && echo >&2 "Already running" && exit 0 33 $CMD 34 ;; 35 36 stop) 37 sig QUIT && exit 0 38 echo >&2 "Not running" 39 ;; 40 41 force-stop) 42 sig TERM && exit 0 43 echo >&2 "Not running" 44 ;; 45 46 restart|reload) 47 sig HUP && echo reloaded OK && exit 0 48 echo >&2 "Couldn't reload, starting '$CMD' instead" 49 $CMD 50 ;; 51 52 upgrade) 53 if sig USR2 && sleep 2 && sig 0 && oldsig QUIT 54 then 55 n=$TIMEOUT 56 while test -s $old_pid && test $n -ge 0 57 do 58 printf '.' && sleep 1 && n=$(( $n - 1 )) 59 done 60 echo 61 62 if test $n -lt 0 && test -s $old_pid 63 then 64 echo >&2 "$old_pid still exists after $TIMEOUT seconds" 65 exit 1 66 fi 67 exit 0 68 fi 69 echo >&2 "Couldn't upgrade, starting '$CMD' instead" 70 $CMD 71 ;; 72 73 reopen-logs) 74 sig USR1 75 ;; 76 77 *) 78 echo >&2 "Usage: $0 <start|stop|restart|upgrade|force-stop|reopen-logs>" 79 exit 1 80 ;; 81 esac

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  • named_scope + average is causing the table to be specified more then once in the sql query run on po

    - by hadees
    I have a named scopes like so... named_scope :gender, lambda { |gender| { :joins => {:survey_session => :profile }, :conditions => { :survey_sessions => { :profiles => { :gender => gender } } } } } and when I call it everything works fine. I also have this average method I call... Answer.average(:rating, :include => {:survey_session => :profile}, :group => "profiles.career") which also works fine if I call it like that. However if I were to call it like so... Answer.gender('m').average(:rating, :include => {:survey_session => :profile}, :group => "profiles.career") I get... ActiveRecord::StatementInvalid: PGError: ERROR: table name "profiles" specified more than once : SELECT avg("answers".rating) AS avg_rating, profiles.career AS profiles_career FROM "answers" LEFT OUTER JOIN "survey_sessions" survey_sessions_answers ON "survey_sessions_answers".id = "answers".survey_session_id LEFT OUTER JOIN "profiles" ON "profiles".id = "survey_sessions_answers".profile_id INNER JOIN "survey_sessions" ON "survey_sessions".id = "answers".survey_session_id INNER JOIN "profiles" ON "profiles".id = "survey_sessions".profile_id WHERE ("profiles"."gender" = E'm') GROUP BY profiles.career Which is a little hard to read but says I'm including the table profiles twice. If I were to just remove the include from average it works but it isn't really practical because average is actually being called inside a method which gets passed the scoped. So there is some times gender or average might get called with out each other and if either was missing the profile include it wouldn't work. So either I need to know how to fix this apparent bug in Rails or figure out a way to know what scopes were applied to a ActiveRecord::NamedScope::Scope object so that I could check to see if they have been applied and if not add the include for average.

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  • Problem with Delete Link?

    - by Kevin
    When I click on the delete link I created, it doesn't do anything (even the flash[:notice] part) in the controller. Am I not calling the .delete? part correctly? The POST part works as I can add tips. Link: <%= link_to "Delete", :controller => "/admin", :action => "tips", :id => t.id, :method => :delete, :confirm => "Are you sure?" %> Admin Controller def tips @tips = Tip.all if request.post? tip = Tip.new(params[:geek_tips]) if tip.save flash[:notice] = "Saved!" redirect_to :action => "tips" else flash[:notice] = "Error!" end elsif request.delete? tip = Tip.find_by_id(params[:id]) tip.delete! flash[:notice] = "Delete Message" redirect_to :action => "tips" end end

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  • Excessive httpd processes to stack up on my Rails + Apache2 + Passenger production setup?

    - by LeoAlmighty
    I have a Rails + Apache2 + Postgres + Passenger application running in production mode in OSX Snow Leopard. The application serves as a data warehouse for another application in the cloud so I'm constantly getting API calls to my OSX production build. After a recent reboot, I'm finding a ton of httpd processes stacking up and eventually requiring an apache reboot. I haven't changed any settings, everything was running fine before. Any ideas on the best way to troubleshoot this? $ ps -ef|grep httpd 0 6203 1 0 0:00.20 ?? 0:00.47 /usr/sbin/httpd -D FOREGROUND 70 6222 6203 0 0:00.05 ?? 0:00.11 /usr/sbin/httpd -D FOREGROUND 70 6224 6203 0 0:00.31 ?? 0:00.50 /usr/sbin/httpd -D FOREGROUND 70 6233 6203 0 0:00.05 ?? 0:00.10 /usr/sbin/httpd -D FOREGROUND 70 6234 6203 0 0:00.43 ?? 0:00.64 /usr/sbin/httpd -D FOREGROUND 70 6243 6203 0 0:00.02 ?? 0:00.03 /usr/sbin/httpd -D FOREGROUND 70 6319 6203 0 0:00.08 ?? 0:00.16 /usr/sbin/httpd -D FOREGROUND 70 6334 6203 0 0:00.02 ?? 0:00.05 /usr/sbin/httpd -D FOREGROUND 70 6469 6203 0 0:00.04 ?? 0:00.08 /usr/sbin/httpd -D FOREGROUND 70 6487 6203 0 0:00.36 ?? 0:00.48 /usr/sbin/httpd -D FOREGROUND 70 6593 6203 0 0:00.36 ?? 0:00.48 /usr/sbin/httpd -D FOREGROUND 70 6709 6203 0 0:00.04 ?? 0:00.08 /usr/sbin/httpd -D FOREGROUND 70 6718 6203 0 0:00.04 ?? 0:00.10 /usr/sbin/httpd -D FOREGROUND 70 6834 6203 0 0:00.01 ?? 0:00.03 /usr/sbin/httpd -D FOREGROUND 70 6852 6203 0 0:00.00 ?? 0:00.00 /usr/sbin/httpd -D FOREGROUND 70 6853 6203 0 0:00.01 ?? 0:00.02 /usr/sbin/httpd -D FOREGROUND

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