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  • Manipulating binary data in Python

    - by Dominic Bou-Samra
    I am opening up a binary file like so: file = open("test/test.x", 'rb') and reading in lines to a list. Each line looks a little like: '\xbe\x00\xc8d\xf8d\x08\xe4.\x07~\x03\x9e\x07\xbe\x03\xde\x07\xfe\n' I am having a hard time manipulating this data. If I try and print each line, python freezes, and emits beeping noises (I think there's a binary beep code in there somewhere). How do I go about using this data safely? How can I convert each hex number to decimal?

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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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  • Active record taking Date.today as yesterday

    - by Mongus Pong
    I have a strange one.. I am doing something like : tip = find (:first, :conditions => ["last_shown = ? or last_shown is null", Date.today]) And then a little later on I do : tip.last_shown = Date.today tip.save When I look at output of these queries, ActiveRecord is doing the first query with todays date as I would expect. However, the send query, ActiveRecord is setting the last_shown date to be yesterdays date. Why on earth would it do this? I have config.time_zone = 'UTC' in my environment.rb. I can use Time.now.utc.to_date instead of Date.today but it makes no difference.

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  • [Python] How do I read binary pickle data first, then unpickle it?

    - by conradlee
    I'm unpickling a NetworkX object that's about 1GB in size on disk. Although I saved it in the binary format (using protocol 2), it is taking a very long time to unpickle this file---at least half an hour. The system I'm running on has plenty of system memory (128 GB), so that's not the bottleneck. I've read here that pickling can be sped up by first reading the entire file into memory, and then unpickling it (that particular thread refers to python 3.0, which I'm not using, but the point should still be true in python 2.6). How do I first read the binary file, and then unpickle it? I have tried: import cPickle as pickle f = open("big_networkx_graph.pickle","rb") bin_data = f.read() graph_data = pickle.load(bin_data) But this returns: TypeError: argument must have 'read' and 'readline' attributes Any ideas?

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  • How to build a test group in watir?

    - by karlthorwald
    I have some single watir.rb scripts that use IE and are written in a standard watir way. How do I create a test group that combines them? I want all of them be executed by executing the main script. Is it possible to auto include single test files into a test group by subidr? Is it possible to enumerate the files that should be included in the test group? Can I cascade (include other watir test groups in a watir test group)?

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  • routing map a action controller

    - by Luca Romagnoli
    Hi i have a controller named "places" with some action like "view", "new", "create" When a user try to launch mysite.com/places i want that is execute the action show of a another controller called "cores" so in the routes.rb file i've put this: map.connect '/:id/show', :controller => "cores", :action => "show" But it doesn't work. I receive this error: Processing PlacesController#show (for 127.0.0.1 at 2010-04-16 00:52:07) [GET] ActionController::UnknownAction (No action responded to show. Actions: admin_denied, admin_required, auto_complete_for_location, auto_complete_for_name, change_location, create, create_facebook_session, create_facebook_session_with_secret, edit, exist, facebook_params, facebook_session, facebook_session_expired, facebook_session_parameters, get_form, is_admin?, new, one_or_true, redirect_to, render_publisher_error, render_publisher_interface, render_publisher_response, set_facebook_session, top_redirect_to, update, wants_interface?, and zero_or_false): How can i do to map that action in another controller? thanks

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  • Simple CanCan problem

    - by sscirrus
    I have just started with CanCan and here's a sample of the code: # Ability.rb def initialize(user) user ||= User.new can :read, Link end # view.html.erb <% if can? :read, @link %> ... <% end %> This is from the github repo for CanCan but this doesn't seem to work (it returns false and stops the ... code from running). When I change the view to <% if can? :read, Link %>, it works. But, this is different to the CanCan readme. Do you know where I'm going wrong here?

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  • remote_function keeps adding authenticity token on GET requests

    - by jaycode
    Hi, I got the problem similar to this post here: https://rails.lighthouseapp.com/projects/8994/tickets/106-authenticity_token-appears-in-urls-after-ajax-get-request routes.rb map.namespace(:admin, :active_scaffold => true) do |admin| admin.resources :regions, :shallow => true do |region| region.resources :birds, :collection => {:search => :get} end end view <%= javascript_tag %Q( #{remote_function(:update => 'bird_search', :url => search_admin_region_birds_path(@region.id), :method => :get)} ) %> It displays url like: http://localhost:3000/admin/regions/7/birds/search?authenticity_token=F43BcQUM4z3bl7s21kLZQrqwGkuErF7C9jiNMKFTZTo%3D which should be: http://localhost:3000/admin/regions/7/birds/search Without this working my Ajax pagination won't work... help!

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  • How to update user info with restful_authentication plugin in Rails?

    - by benoror
    Hi people, I want to give the users to change their account info with restful_authentication plugin in rails. I added this two methods to my controller: def edit @user = User.find(params[:id]) end def update @user = User.find(params[:id]) # Only update password when necessary params[:user].delete(:password) if pàrams[:user][:password].blank? respond_to do |format| if @user.update_attributes(params[:user]) flash[:notice] = 'User was successfully updated.' format.html { redirect_to(@user) } format.xml { head :ok } else format.html { render :action => "edit" } format.xml { render :xml => @user.errors, :status => :unprocessable_entity } end end end Also, I copied new.html.erb to edit.html.erb. Considering that resources are already defined in routes.rb I was expecting it to work easily, bute somehow when I click the save button it calls the create method, instead of update, using a POST http request. Any ideas?

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  • rake db:create gives some problem when used from limited account

    - by Xinxua
    I am using mysql 5.1 and mysql gems version is 2.73 This is giving the following error message when I try to run it from a limited account in my XP. If try it using the admin account, it works fine. I think this is wierd because it cannot be the problem of mysql gem. (in F:/Temp/wassup) !!! The bundled mysql.rb driver has been removed from Rails 2.2. Please install the mysql gem and try again: gem install mysql. rake aborted! 5: Access is denied. - C:/Program Files/Ruby/lib/ruby/gems/1.8/gems/mysql-2.7. 3-x86-mswin32/ext/mysql.so (See full trace by running task with --trace) I need to work from the limited account. Can anyone let me know why is this happening?

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  • Function From C to Delphi

    - by XBasic3000
    I created a function similar below in delphi code. but it wont work. What is the proper way to convert this? char* ReadSpeechFile(char* pFileName, int *nFileSize) { char *szBuf, *pLinearPCM; int nSize; FILE* fp; //read wave data fp = fopen(pFileName, "rb"); if(fp == NULL) return NULL; fseek(fp, 0, SEEK_END); nSize = ftell(fp); //linear szBuf = (char *)calloc(nSize, sizeof(char)); fseek(fp, 0, SEEK_SET); fread(szBuf, sizeof(char), nSize, fp); fclose(fp); *nFileSize = nSize; return szBuf; }

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  • Why could Shark be so slow?

    - by taw
    I'm trying to profile Ruby interpreter. I run shark -i ./ruby bm_sudoku.rb or something like that, the script finishes in less than a second, and then Shark goes to "CHUDData - Analyzing samples... 99.3%.." point and stays there frozen for 10 minutes or so. It finishes eventually, it's just so ridiculously slow it's pretty much unusable. Version I have here is OSX 10.5, shark 4.6.1 (227). Any ideas what that might be?

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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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  • No route matches error with application_controller spec

    - by Eric M.
    I have an application_controller spec that is failing since I removed the controller/action route from routes.rb. I get the following error: No route matches {:controller=>"application", :action=>"index"} I had many tests fail in the same way, but was able to fix them by including the correct parameters in the get call. So for instance, if I wanted to get the standard show route for posts in my spec, I had to change get :show to get :show, :id => '1' Unfortunately, I'm not sure now what to pass along for the application controller specs. I've included my test below. describe ApplicationController do it "should find the latest published posts and assign them for the view" do Post.should_receive(:latest).and_return(@posts) get :index assigns[:posts].should == @posts end it "should find the latest approved comments and assign them for the view" do Comment.should_receive(:latest).and_return(@comments) get :index assigns[:comments].should == @comments end end

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  • Adding RESTful route to Rails app

    - by macek
    I'm reading these two pages resources Adding more RESTful actions The Rails Guides page shows map.resources :photos, :new => { :upload => :post } And its corresponding URL /photos/upload This looks wonderful. My routes.rb shows this map.resources :users, :new => { :signup => :get, :register => :post } When I do: [~/my_app]$ rake routes I see the two new routes added signup_new_user GET /users/new/signup(.:format) register_new_user POST /users/new/register(.:format) Note the inclusion of /new! I don't want that. I just want /users/signup and /users/register (as described in the Rails Routing Guide). Any help?

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  • Does to_json require parameters? what about within rails?

    - by Harry Wood
    Does to_json require parameters? what about within rails? I started getting the error "wrong number of arguments (0 for 1)" when doing myhash.to_json Unfortunately I'm not sure when this error started happening, but I guess it relates to some versions of either rails or the json gem. I suppose my code (in a rails controller) is using the ActiveSupport::JSON version of to_json, rather than the to_josn method supported by the json gem. ActiveSupport::JSON vs JSON In environment.rb I have RAILS_GEM_VERSION = '2.3.2' and also config.gem "json", :version=> '1.1.7' It's just a simple hash structure containing primitives which I want to convert in my controller, and it was working, but now I can't seem to run to_json without passing parameters.

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  • Ruby on Rails: What are Erubis' disadvantages and why isn't it packaged with Rails by default? How t

    - by williamjones
    I just discovered Erubis, a replacement for the default view renderer for Ruby on Rails. However, from what I can tell from reading about it, it's superior across the board. It is much faster. It has many more options. It can prevent cross site scripting without having to use h. Does this have any disadvantages versus the standard erb renderer? Why isn't this the standard renderer packaged with Rails? Also, the docs for Erubis say to install it just by installing the gem, and then add the following to environment.rb: require 'erubis/helpers/rails_helper' #Erubis::Helpers::RailsHelper.engine_class = Erubis::Eruby # or Erubis::FastEruby Reading the docs, FastEruby seems to be just a faster renderer than Eruby. Why wouldn't it be default and used by everyone? I'm highly interested in using the engine erubis::EscapedEruby which automatically calls h to escape html on fields from the database. Are there any gotchas I should be aware of or does this pretty much solve all cross site scripting?

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  • rails error on create action

    - by ash34
    SQL (2.0ms) SELECT task_report_requests_seq.NEXTVAL id FROM dual TaskReportRequest Create (2.2ms) INSERT INTO task_report_requests (location, created_at, updated_at, id, freq, login, task_dt) VALUES('020', TO_DATE('2010-05-25 05:02:38','YYYY-MM-DD HH24:MI:SS'), TO_DATE('2010-05-25 05:02:38','YYYY-MM-DD HH24:MI:SS'), 10023, 'M', NULL, TO_DATE('2010-05-30 00:00:00','YYYY-MM-DD HH24:MI:SS')) NoMethodError (You have a nil object when you didn't expect it! The error occurred while evaluating nil.call): app/controllers/task_report_requests_controller.rb:45:in `create' It says error evaluating nil.call . Can someone tell me when I would get such an error. I am not able to figure out with this information. thanks, ash

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  • [Devise] confirmation_url points to localhost

    - by Ved
    I am using Devise and omniauth for authentication in my rails app. I have followed readme and put the following line in my production.rb : config.action_mailer.default_url_options = { :host => 'http://morning-autumn-487.heroku.com' } My mailer has the following code: <%= link_to 'Confirm my account',confirmation_url(@user, :confirmation_token => @user.confirmation_token) %> When I upload the app to heroku, the confirmation mail has the following link for registration in the email : http://127.0.0.1:3000/users/confirmation?confirmation_token=8TyGWQo6y... Is there a setting that governs this host name ?

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  • Rails - default value in text_field but only for new_record?

    - by jyoseph
    On a Content model have an attribute named slug. When creating a new record, I want to use a helper to populate this field, but on an existing record I want to use the value from the database. Currently I have: <%- if @content.new_record? -%> <%= f.text_field :slug, :value => "#{generate_slug(6)}" %> <%- else %> <%= f.text_field :slug %> <%- end %> But that seems a bit verbose. Is this the best way, or is there no other way? (Rails newb just trying to find the "Rails way" on issues I'm unsure of) Edit I should note that the helper is currently in /app/helpers/application_helper.rb

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  • How do you unpack gems using jruby on rails 2.3?

    - by James Moore
    I'm trying to unpack all the system gems to end up with a standalone Rails directory including all the rails gems and all the system gems. I'm starting with a bare rails setup; just did a jruby -S rails and a 'generate jdbc'. I then add a config.gem 'jdbc-mysql' to environment.rb and do the jruby -S rake gems:unpack:dependencies. After unpacking, if I do a rake I get: no such file to load -- jdbc-mysql Is there something else you need to do to get the jdbc gem unpacked? I'm using jruby 1.4.0 (and moving to 1.5 is on my todo list) and rails 2.3.8.

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  • Mongrel_rails can't find memcache-client

    - by tonisep
    We started to use memcache-client in our rails app and it works just fine with "script/server" but "mongrel_rails start" fails with an error. In environment.rb we define "memcache-client" and version "1.8.1". Gem list shows that the gem is installed: memcache-client (1.8.1). If run with "script/server" everything works but with "mongrel_rails start" it fails with error: no such file to load -- memcache-client Any advice what could be wrong here? Is there something different in the way mongrel_rails loads the gems compared to script/server? Or is my setup just broken?

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  • How do I rewrite binary data in Java

    - by hayato
    I'm trying to figure out how to replace binary data using Java. below is a PHP example of replacing "foo" to "bar" from a swf file. <?php $fp = fopen("binary.swf","rb"); $size = filesize("binary.swf"); $search = bin2hex("foo"); $replace = bin2hex("bar"); $data = fread($fp, $size); $data16 = bin2hex($data); $data16 = str_replace($search, $replace, $data16); $data = pack('H*',$data16); header("Content-Type:application/x-shockwave-flash"); echo $data; ?> How do I do this in Java.

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  • Ruby on Rails: Simple way to select all records of a nested model?

    - by Josh Pinter
    Just curious, I spent an embarrassing amount of time trying to get an array of all the records in a nested model. I just want to make sure there is not a better way. Here is the setup: I have three models that are nested under each other (Facilities Tags Inspections), producing code like this for routes.rb: map.resources :facilities do |facilities| facilities.resources :tags, :has_many => :inspections end I wanted to get all of the inspections for a facility and here is what my code ended up being: def facility_inspections @facility = Facility.find(params[:facility_id]) @inspections = [] @facility.tags.each do |tag| tag.inspections.each do |inspection| @inspections << inspection end end end It works but is this the best way to do this - I think it's cumbersome. Thanks in advance. Josh

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  • Why is capistrano acting up like this?

    - by Matt
    I am having an issue with my deploy i ran cap deploy and got this Warning: Permanently added 'github.com,207.97.227.239' (RSA) to the list of known hosts. ** [174.143.150.79 :: out] Permission denied (publickey). ** fatal: The remote end hung up unexpectedly command finished *** [deploy:update_code] rolling back * executing "rm -rf /home/deploy/transprint/releases/20110105034446; true" servers: ["174.143.150.79"] [174.143.150.79] executing command here is my deploy.rb set :application, "transprint" set :domain, "174.149.150.79" set :user, "deploy" set :use_sudo, false set :scm, :git set :deploy_via, :remote_cache set :app_path, "production" set :rails_env, 'production' set :repository, "[email protected]:myname/something.git" set :scm_username, 'deploy' set :deploy_to, "/home/deploy/#{application}" role :app, domain role :web, domain role :db, domain, :primary => true please help

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