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• Save JSON outputed from a URL to a file

  - by Aidan

  Hey Guys, How would I save JSON outputed by an URL to a file? e.g from the Twitter search API (this http://search.twitter.com/search.json?q=hi) Language isn't important. Thanks! edit // How would I then append further updates to EOF?

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• Tree data structure gems compared?

  - by huug

  I want to you use a tree structure for my navigation. I was thinking about using Ancestry, but then I found this article about 7 plugins for providing a tree structure to your models. What are the pros/cons for each plugin/gem and above all: which one do you recommend? Tnx!

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• Twitter + Grackle, determining the logged in user

  - by JP

  This is crazy, but I'm stumped! Once my user has logged into twitter via OAuth how do I determine their username using grackle? @twitter = Grackle::Client.new(:auth => { :type => :oauth, :consumer_key => consumer_key, :consumer_secret => consumer_secret, :token => @access_token.token, :token_secret => @access_token.secret }) username = @twitte.something_here?

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• How can I get all the checked items from a submitted form with sinatra's params?

  - by 102405176597896213397

  I'm running Sinatra 1.0 with HAML, my form has a number of checkboxes, for example books I like, and you would select all the books you want. The checkbox name is "books". In sinatra params['books'] there should be an array of all the books that were checked, but it only has the last item that was checked, not an array. How can I get all the checked items? HAML: %form{:action => "/test", :method => 'post'} %input{:name=>'check',:type=>'checkbox',:value=>'item1'} item 1 %input{:name=>'check',:type=>'checkbox',:value=>'item2'} item 2 %input{:name=>'check',:type=>'checkbox',:value=>'item3'} item 3 %input{:type => "submit", :value => "send", :class => "button"} Sinatra get method post '/test' do puts params['check'] #should be an array but is last item checked end

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• Setting new class variables inside a module

  - by Sean McCleary

  I have a plugin I have been working on that adds publishing to ActiveRecord classes. I extend my classes with my publisher like so: class Note < ActiveRecord::Base # ... publishable :related_attributes => [:taggings] end My publisher is structured like: module Publisher def self.included(base) base.send(:extend, ClassMethods) @@publishing_options = [] # does not seem to be available end module ClassMethods def publishable options={} include InstanceMethods @@publishing_options = options # does not work as class_variable_set is a private method # self.class_variable_set(:@@publishing_options, options) # results in: uninitialized class variable @@publishing_options in Publisher::ClassMethods puts "@@publishing_options: #{@@publishing_options.inspect}" # ... end # ... end module InstanceMethods # results in: uninitialized class variable @@publishing_options in Publisher::InstanceMethods def related_attributes @@publishing_options[:related_attributes] end # ... end end Any ideas on how to pass options to publishable and have them available as a class variable?

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• Can Capistrano set variables based on a role?

  - by conickal

  I am trying to use Capistrano to deploy to two different roles, using Bundler on both, however the Bundler command and flags will be different. Is it possible to set variables that are specific to a role? Either something like: set :bundle_flags, "--deployment --quiet", :role => "web" or: role :web do set :bundler_cmd, "--deployment --quiet" end Neither of those two options work, of course. Is there a way to accomplish this, or something like it?

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• NoMethodError using Memcached Sinatra-style

  - by sevennineteen

  I've just installed Memcached on my Mac and updated my Sinatra app configuration as described in Heroku's documentation, but I'm getting a NoMethodError when trying to use the hash-based syntax they specify: >> CACHE['color'] = 'blue' >> CACHE['color'] Using explicit get and set methods as below seems to work fine. >> CACHE.set('color', 'blue') >> CACHE.get('color') If necessary I can use the latter syntax, but the former seems more elegant. I haven't tested this on Heroku's environment since I'd like whatever implementation I use to work on my local environment as well. Thanks!

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• Nested Resource - How to pass needed keys, and attribute to update?

  - by Jason B

  My nested resources are working for form_for updates, but I have a few toggles that I need to setup to change a status field. So I am using link_to, and accessing the url helper. link_to "toggle", edit_project_expense_path(@project[:id],expense_item[:id]) routes.rb resources :projects do resources :expenses end match '/submit_expense/:id' => 'expenses#submit_expense', :as => 'submit_expense' rake routes edit_project_expense GET /projects/:project_id/expenses/:id/edit(.:format) expenses#edit My question is: How can I also send along :approval_status = "1", with my link_to?

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• Strange DataMapper (0.10.2) error. Please help!

  - by Joel M.

  See the full error here: http://notesapp.heroku.com/ I'm using DataMapper and dm-validations 0.10.2. No matter how much I tweak my models, I get the same error, or another one. Here's how my model looks like: class User include DataMapper::Resource attr_accessor :password, :password_confirmation property :id, Serial, :required => true property :email, String, :required => true, :format => :email_address, :unique => true property :hashed_password, String property :salt, String, :required => true property :created_at, DateTime, :default => Time.now property :permission_level, Integer, :default => 1 validates_present :password_confirmation, :unless => Proc.new { |t| t.hashed_password } validates_present :password, :unless => Proc.new { |t| t.hashed_password } validates_is_confirmed :password

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• config issue in vb6

  - by ankita

  vb6 application calls the comcalllable .net class library which requires the configuration file ,how can we porvide the config file?

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• What is "home" actually: map.root :controller => "home"

  - by rtfminc

  I see lots of : map.root :controller => "home" Its I know simple, but what does home point to? A file? A controller? How/where does it gets its magic?

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• Use a function in a conditions hash

  - by Pierre

  Hi, I'm building a conditions hash to run a query but I'm having a problem with one specific case: conditions2 = ['extract(year from signature_date) = ?', params[:year].to_i] unless params[:year].blank? conditions[:country_id] = COUNTRIES.select{|c| c.geography_id == params[:geographies]} unless params[:geographies].blank? conditions[:category_id] = CATEGORY_CHILDREN[params[:categories].to_i] unless params[:categories].blank? conditions[:country_id] = params[:countries] unless params[:countries].blank? conditions['extract(year from signature_date)'] = params[:year].to_i unless params[:year].blank? But the last line breaks everything, as it gets interpreted as follows: AND ("negotiations"."extract(year from signature_date)" = 2010 Is there a way to avoid that "negotiations"." is prepended to my condition? thank you, P.

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• I am confused for FAQ [closed]

  - by khushwant

  Please help me out of this Idiot confusion!!!

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• What is the best way to handle dynamic content_type in Sinatra

  - by lusis

  I'm currently doing the following but it feels "kludgy": module Sinatra module DynFormat def dform(data,ct) if ct == 'xml';return data.to_xml;end if ct == 'json';return data.to_json;end end end helpers DynFormat end My goal is to plan ahead. Right now we're only working with XML for this particular web service but we want to move over to JSON as soon as all the components in our stack support it. Here's a sample route: get '/api/people/named/:name/:format' do format = params[:format] h = {'xml' => 'text/xml','json' => 'application/json'} content_type h[format], :charset => 'utf-8' person = params[:name] salesperson = Salespeople.find(:all, :conditions => ['name LIKE ?', "%#{person}%"]) "#{dform(salesperson,format)}" end It just feels like I'm not doing it the best way possible.

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• how to save related models with non-null foreign key

  - by Fortress

  I have a model called user which has_one email. I put the foreign key (NOT NULL) inside users table. Now I'm trying to save it in the following way: @email = Email.new(params[:email]) @email.user = User.new(params[:user]) @email.save This raises a db exception, because the foreign key constraint is not met (NULL is inserted into email_id). How can I elegantly solve this or is my data modeling wrong?

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• Is it possible to titleize in IRB?

  - by Trip

  I tried this : User.find(1).update_attribute('first_name', '#{first.name.titleize}') => /#{first.name.titleize} I am not sure any other way to do this. Many thanks

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• initializing hashes

  - by Paul

  Seems like I am frequently writing something like this... a_hash['x'] ? a_hash['x'] += ' some more text' : a_hash['x'] = 'first text' seems like there ought to be a better way, but I can't find it.

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• Compare a DateTime to the current date

  - by looloobs

  Hi I am trying to use a condition on events when the start_at DateTime is equal to or greater than Today's date. I want to list upcoming events, but clearly they are not upcoming if they have already passed. I have: @appointments = Event.find(:all, :conditions => ['move_id = ? AND start_at = ?', @move.id, Date.today]) I think I may be comparing apples and oranges here. It doesn't throw and error, just doesn't do what it is supposed to. Help! Thanks in advance.

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• paperclip plugin not support for I18n

  - by user354413

  I've added I18n support for error messages: Now you can define translations for the errors messages in e.g. your YAML locale file: en: paperclip: errors: attachment: size: "Invalid file size" content_type: "Unsupported content type" presence: "Cant' be blank" when I use validates_attachemnt_zie :avatar how to get error message?

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• conditions without repeats

  - by Luca Romagnoli

  Hi i'm using this for getting data: Topic.find(:all, :include => ..., :conditions => @core ? ["cores_topics.id = ? AND visible = 1 AND (distance < ? OR cores.id IN (?))",@core.id, @user_location[3].to_i, @user_friends] : ["visible = 1 AND (distance < ? OR cores.id IN (?))", @user_location[3].to_i, @user_friends], ... how can i rewrite the conditions shorter? thanks

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• resend confirm instructions via devise

  - by Paul 'Whippet' McGuane

  what im trying to achieve is that when an admin views a list of members, they can click a link to resend the instructions on how to confirm that members accounts. this is the code im using to try and achieve this = link_to 'Resend Confirmation', confirmation_path(:user => {:email => user.email}), :remote => :true im hoping that this would allow me to pass the users email through to the link have it then sent to that user though the issue im getting is Could not find a valid mapping for {:user=>{:email=>"[email protected]"}}

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• Two files with the same name pointed by RUBYLIB ?

  - by JCLL

  I have two files with the same name "Foo.rb" in the directories pointed by my RUBYLIB env variable. This causes the interpreter to fail, when 'require "Foo"' is invoked. It cannot know which to use. How to solve this without renaming the files ?

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• acts_as_ferret with multiple hosts

  - by Nick

  I've got everything working with ferret and acts_as_ferret for development (or localhost DRb), but I can't get my multiple host deployment working. All of the remote systems get ECONNREFUSED when accessing the port. On the ferret server, the daemon is listening on localhost only despite the configuration listing the FQDN as the host. I also tried switching to a UNIX socket to share data between the ferret DRb daemon and the app code but it too gets ECONNREFUSED. (The socket is available to all of the machines via an NFS mount). Is there a better way to do this or should I be looking for another search indexer? Thanks.

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• How to update attributes without validation

  - by Brian Roisentul

  I've got a model with its validations, and I found out that I can't update an attribute without validating the object before. I already tried to add on => :create syntax at the end of each validation line, but I got the same results. My announcement model have the following validations: validates_presence_of :title validates_presence_of :description validates_presence_of :announcement_type_id validate :validates_publication_date validate :validates_start_date validate :validates_start_end_dates validate :validates_category validate :validates_province validates_length_of :title, :in => 6..255, :on => :save validates_length_of :subtitle, :in => 0..255, :on => :save validates_length_of :subtitle, :in => 0..255, :on => :save validates_length_of :place, :in => 0..50, :on => :save validates_numericality_of :vacants, :greater_than_or_equal_to => 0, :only_integer => true validates_numericality_of :price, :greater_than_or_equal_to => 0, :only_integer => true My rake task does the following: task :announcements_expiration => :environment do announcements = Announcement.expired announcements.each do |a| #Gets the user that owns the announcement user = User.find(a.user_id) puts a.title + '...' a.state = 'deactivated' if a.update_attributes(:state => a.state) puts 'state changed to deactivated' else a.errors.each do |e| puts e end end end This throws all the validation exceptions for that model, in the output. Does anybody how to update an attribute without validating the model?

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• has_many :through name suggestions

  - by user1084769

  I have three models, user, achievement, badge and I plan on using has_many :through instead of has_many_and_belongs_to since I will have a few extra fields in the join tables. According to a Railscast I watched, using this method requires coming up with new model names and not user_badge or user_achievement. For my User Achievement join what do you think of Accomplishment? For my User Badge join what do you think of Distinction?

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