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  • Rails: Auto-Detecting Database Adapter

    - by Dex
    The new version of the ar-extensions gem requires that you load the appropriate adapter yourself. On my development side I use mysql, however Heroku uses PostgreSQL. For example, on my development side I need to do this: require 'ar-extensions/adapters/mysql' require 'ar-extensions/import/mysql' How can I audo-detect which adapter to use?

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  • Is there a way to make the flash[:notice] appear above, or before, the flash[:error] ?

    - by GoodGets
    So, I'd like to be able to display both a flash[:notice] and a flash[:error] on the same action, but I'd like for the :notice to always be displayed above (or before) the error. Is there a way to do this? In my controller, I thought I could just code the flash[:error] before the flash[:notice], so that rails will display it correctly, and it does a vast majority of the time. But every now and then they are randomly switched, and I can't seem to figure out why. So, how can I ensure that a flash[:notice] is always displayed above an :error ?

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  • How to make a control invisible?

    - by Nakilon
    I've made several TextCtrls and Button, but currently users of my application don't want to see them. So I have to hide them temporary (for current build). Here they are: class MainFrame < Wx::Frame def initialize (parent = nil) super nil,:title=>"sometitle",:size=>[600,600] set_sizer Wx::BoxSizer.new Wx::VERTICAL @tag1 = Wx::TextCtrl.new self sizer.add_item @tag1,:flag=>Wx::RIGHT|Wx::EXPAND @tag1.set_value 'property' @tag1title = Wx::TextCtrl.new self sizer.add_item @tag1title,:flag=>Wx::RIGHT|Wx::EXPAND @tag1title.set_value 'title' @tag2 = Wx::TextCtrl.new self sizer.add_item @tag2,:flag=>Wx::RIGHT|Wx::EXPAND @tag2.set_value 'description' @tag2title = Wx::TextCtrl.new self sizer.add_item @tag2title,:flag=>Wx::RIGHT|Wx::EXPAND @tag2title.set_value '' @button_parse = Wx::Button.new self sizer.add_item @button_parse @button_parse.label = "Parse XML" evt_button @button_parse, :click_parse # ...... end # ...... end I see nothing about it in docs and Google is also not a friend for me today.

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  • Partial form with nested routes

    - by jerhinesmith
    I have two models -- User and Entry -- that are related through a has_many relationship (a User has many Entries). I'm using RESTful routing, and have the following in my routes.rb file: map.resource :user, :controller => "users" do |user| user.resources :entries end This seems to work, but in my partial _form file, when I do this: form_for [@current_user, @entry] do |f| # Form stuff end It generates a URL like this: /user/entries.%23%3Cuser:0xb6a6aea8%3E instead of /user/entries Am I missing something? I should note that the correct classes are applied to the form when doing creation vs. editing, so it does seem to be correctly interpreting what I'm trying to do -- it's just that I can't submit the form to an invalid url.

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  • Apache/Rails/Passenger directory URLs that don't end in '/' fail to 404.

    - by Portamento
    I'm using Apache with passenger to run a rails app. In my rails app, I have some static content in subdirectories of the public directory. Each subdirectory has an index.html in it. So, inside the public directory, I have a subdir called 'b' and inside it, is an index.html. So it's like this: /public/b/index.html I have links to these pages, of the form: http://a.com/b If I do this in my regular non-rails web directory, Apache correctly rewrites this URL to be http://a.com/b/ which then, subsequently shows the index.html. It's only when accessing my rails app that it doesn't work. In fact, if I turn off passenger mod... so it just accesses my rails app like a regular document root, it works correctly also. What the heck do I need to do to get this to work properly with passenger? Again, it works fine in apache itself when passenger is not involved. I am running passenger 2.1.3. I have another server running passenger 2.0 that doesn't seem to have this problem, but I don't see anything different in the config other than the different versions of passenger itself. HELP! Been working on this for two days solid with no improvement!

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  • Rails: common approach for handling exceptions in restful actions on objects that have been destroye

    - by Greg
    It is very common in Rails for an objects_controller controller to have RESTful edit and destroy actions like so: def edit @object = Object.find(params[:id]) end def destroy @object = Object.find(params[:id]) @object.destroy redirect_to :back end With an associated view that provides edit and destroy links like so: <%= link_to "Edit the Object", edit_object_path(object) %> <%= link_to "Delete", object, :confirm => 'Are you sure?', :method => :delete %> And it is easy to blow this up. If I open two browser windows, A and B, destroy an object with the "Delete" link in browser A and then press the "Edit" link in browser B, the find() in the edit action throws an exception. Obviously there are several ways to deal with this in the edit action: catch the exception and recover gracefully use @object = find(:first, "conditions... etc. and test the @object before going further But seeing as this is such a common pattern, I would love to know how other folks deal with this situation.

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  • where from does paperclip get the name of original file?

    - by Pavel K.
    i started using nginx upload module (which creates upload files like /tmp/000121545) but i need paperclip to use original filename while saving files (like /public/avatars/LuckyLuke.jpg) previously in the parameters Rails were passing just "avatar"=>#<File:/tmp/RackMultipart20100413-6151-t3ecq0-0> no original filename as well, so i am wondering where from does it come in paperclip? i tried looking through plugin code but it's currently a bit too complex for me.

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  • REXML Formatting issues

    - by dagda1
    Hi, I am using REXML to edit an xml file but have ran into difficulties with formatting. My original code looked like this: file = File.new( destination) doc = REXML::Document.new file doc.elements.each("configuration/continuity2") do |element| element.attributes["islive"] = "true" element.attributes["pagetitle"] = "#{@client.page_title}" element.attributes["clientname"] = "#{@client.name}" end doc.elements.each("configuration/continuity2/plans") do |element| element.attributes["storebasedir"] = "#{@client.store_dir}" end I first of all had to add the following code as REXML was adding single quotes instead of double quotes. I found the following via google: REXML::Attribute.class_eval( %q^ def to_string %Q[#@expanded_name="#{to_s().gsub(/"/, '&quot;')}"] end ^ ) I also have a problem in that REXML is reformatting the document. are there ways to stop this? Cheers Paul

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  • How to stay DRY when using both Javascript and ERB templates (Rails)

    - by user94154
    I'm building a Rails app that uses Pusher to use web sockets to push updates to directly to the client. In javascript: channel.bind('tweet-create', function(tweet){ //when a tweet is created, execute the following code: $('#timeline').append("<div class='tweet'><div class='tweeter'>"+tweet.username+"</div>"+tweet.status+"</div>"); }); This is nasty mixing of code and presentation. So the natural solution would be to use a javascript template. Perhaps eco or mustache: //store this somewhere convenient, perhaps in the view folder: tweet_view = "<div class='tweet'><div class='tweeter'>{{tweet.username}}</div>{{tweet.status}}</div>" channel.bind('tweet-create', function(tweet){ //when a tweet is created, execute the following code: $('#timeline').append(Mustache.to_html(tweet_view, tweet)); //much cleaner }); This is good and all, except, I'm repeating myself. The mustache template is 99% identical to the ERB templates I already have written to render HTML from the server. The intended output/purpose of the mustache and ERB templates are 100% the same: to turn a tweet object into tweet html. What is the best way to eliminate this repetition? UPDATE: Even though I answered my own question, I really want to see other ideas/solutions from other people--hence the bounty!

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  • Creating records using RJS in rails

    - by Elliot
    Hey Everyone, so I've watched http://railscasts.com/episodes/43-ajax-with-rjs but I have a question: In my view I have the following: <div id="testly"> <%= render :partial => "test" %> </div> This works. Using create.rjs to change the content in this div, I have the following in my create.rjs file: page.replace_html :testly, :partial = 'test' Simply put, this should just refresh the partial right? But its not working... Would love any suggestions!

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  • function not working in production mode

    - by maps
    I am using the rvideo gem to transcode files to a .flv format. class Video < ActiveRecord::Base include AASM aasm_column :status aasm_initial_state :initial aasm_state :initial aasm_state :converting, :exit => :transcode aasm_state :transfering , :exit => :send_s3 aasm_state :completed aasm_state :failed aasm_event :convert do transitions :from => [:initial], :to => :converting end aasm_event :transfer do transitions :from => [:converting], :to => :transfering end aasm_event :complete do transitions :from => [:transfering], :to => :completed end aasm_event :error do transitions :from => [:initial, :converting, :transfering, :completed] end has_attached_file :asset, :path => "uploads/:attachment/:id.:basename.:extension" def flash_path return self.asset.path + '.flv' end def flash_name return File::basename(self.asset.path)# + '.flv' end def flash_url return "#{AWS_HOST}/#{AWS_BUCKET}/#{self.flash_name}" end # transcode file def transcode begin RVideo::Transcoder.logger = logger file = RVideo::Inspector.new(:file => self.asset.path) command = "ffmpeg -i $input_file$ -y -s $resolution$ -ar 44100 -b 64k -r 15 -sameq $output_file$" options = { :input_file => "#{RAILS_ROOT}/#{self.asset.path}", :output_file => "#{RAILS_ROOT}/#{self.flash_path}", :resolution => "320x200" } transcoder = RVideo::Transcoder.new transcoder.execute(command, options) rescue RVideo::TranscoderError => e logger.error "Encountered error transcoding #{self.asset.path}" logger.error e.message end end The input file is added to the asset directory, but I never get an outputted file. On the view page aasm hangs on "converting".

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  • How to let users post links/images to Facebook, Twitter, Buzz etc... from a Rails based website?

    - by wgpubs
    I'd like to offer users the ability to post images / links to articles from my web application to Facebook, Twitter, Buzz and any other social network. A perfect example of the functionality I'm trying to replicate is mashable.com ... where each social network is represented by an icon that a) shows the number of shares AND b) allows users to click on it to post to that specific network. Don't know if it matters ... but the site is built using RoR. Thanks

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  • Can 'locals' be used with 'collection' when rendering partials in Rails?

    - by Gav
    Everything works okay when I try to render a partial like this: = render :partial => "/shared/enquiry/car_type", :collection => @enquiry.available_car_types However, if I also want to pass a variable (in this case 'path', because I'm sharing this partial across two forms), the path is not available to me: = render :partial => "/shared/enquiry/car_type", :collection => @enquiry.available_car_types, :locals => {:path => customers_enquiry_path} I've tried moving things around, but nothing appears to work, leading me to believe one cannot use locals with collections. Any help would be appreciated. Gav

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  • Capistrano 3, Rails 4, database configuration does not specify adapter

    - by Kazmin
    When I start cap production deploy it fails like this: DEBUG [4ee8fa7a] Command: cd /home/deploy/myapp/releases/releases/20131025212110 && (RVM_BIN_PATH=~/.rvm/bin RAILS_ENV= ~/.rvm/bin/myapp_rake assets:precompile ) DEBUG [4ee8fa7a] rake aborted! DEBUG [4ee8fa7a] database configuration does not specify adapter You can see that "RAILS_ENV=" is actually empty and I'm wondering why that might be happening? I assume that this is the reason for the latter error that I don't have a database configuration. The deploy.rb file is below: set :application, 'myapp' set :repo_url, '[email protected]:developer/myapp.git' set :branch, :master set :deploy_to, '/home/deploy/myapp/releases' set :scm, :git set :devpath, "/home/deploy/myapp_development" set :user, "deploy" set :use_sudo, false set :default_env, { rvm_bin_path: '~/.rvm/bin' } set :keep_releases, 5 namespace :deploy do desc 'Restart application' task :restart do on roles(:app), in: :sequence, wait: 5 do # Your restart mechanism here, for example: within release_path do execute " bundle exec thin restart -O -C config/thin/production.yml" end end end after :restart, :clear_cache do on roles(:web), in: :groups, limit: 3, wait: 10 do within release_path do end end end after :finishing, 'deploy:cleanup' end?

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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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  • jquery onclick function not firing with rails link_to_remote

    - by RahTha
    In the js file of the page, inside $(document).ready(function() {} i have $(".school a").live("click", function (e){ e.preventDefault(); ....; jsFunc(param1, param2, param3); }); Now the div with the class school has tags generated by rails link_to_remote with :url, :action, :before, :html. On clicking on this link it does all that it should do with regards to link_to_remote, but somehow the onclick event in the document.ready does not attach to it. Why would this be happening? The jsFunc all it does is post to a url async-ly, i figured out that stuffing that post url in the :before of the link_to_remote would work - but is there a more elegant way of just being able to use the attach functionality

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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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  • Can rails test speed be increased?

    - by Sam
    Hi all, I'm a recent convert to TDD but as my codebase grows in size and complexity, I find myself waiting longer and longer periods for the framework to load every time I want to run a test. I am aware of rspec's spec_server but I'm using Test::Unit with shoulda. I tried Snailgun (http://github.com/candlerb/snailgun) but noticed very little increased in speed. I have also tried spork-testunit (http://github.com/timcharper/spork-testunit) but it's not fully compatible with my existing tests. The delay in running tests is a definite pain point and is putting me of TDD (at least with rails). Is anyone aware of any other options? thanks Sam

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  • how to have separate keys per record in mongo_mapper + Rails

    - by Vitaly Kushner
    When I'm adding a record in mongodb I can specify whatever keys I want and it will store it in the db. The problem is that it will remember those keys for the next time I insert another record. so for example if I do the following: Product.create :foo => 123 and then Product.create :bar => 456 I get :foo => nil field in the 2nd record. This is definitely not a limitation of mongodb itself, since if I restart the rails console and create yet another record with different set of columns, it will not add the columns from the 1st 2 records. So it seems like mongomapper remembers all the keys used and inserts them all into all records, even if values are not provided. The question is obviously: how do I disable this crazy attributes explosion? Basically I want only the 'permanent' keys that I specify in the model to be in every record, but all the 'extra' attributes to be specified per record and not to mess the consequent records.

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  • Is it Me or Are Rails and Django Difficult to Install on Windows?

    - by Mackristo
    I tried getting these frameworks working on Windows Vista for a couple of days but to no avail. Every single time I thought I had them working I would get some random error involving the PostgreSQL or MySQL setup, or the paths were screwed up or some other command line error "not recognized as an internal or external command" (or something). Someone told me that these frameworks are a lot easier to get running on Ubuntu but I really don't want to make that switch as everything I have is on Windows. Are these common problems when trying to get running on Windows? I think I'll just stick with C# and .NET as everything seems to work pretty nicely together with none of this "install-twenty-different-components" stuff and see if they work together. Is Instant Django advisable to use?

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