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Search found 170 results on 7 pages for 'irb'.

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• Is there a Scala version of .irbrc or another way to define some default libraries for REPL use?

  - by Tom Morris

  I've written a little library that uses implicits to add functionality that one only needs when using the REPL in Scala. Ruby has libraries like this - for things like pretty printing, firing up text editors (like the interactive_editor gem which invokes Vim from irb - see this post), debuggers and the like. The library I am trying to write adds…

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• InPlaceBitmapMetadataWriter.TrySave() returns true but does nothing

  - by mephisto123

  On some .JPG files (EPS previews, generated by Adobe Illustrator) in Windows 7 InPlaceBitmapMetadataWriter.TrySave() returns true after some SetQuery() calls, but does nothing. Code sample: BitmapDecoder decoder; BitmapFrame frame; BitmapMetadata metadata; InPlaceBitmapMetadataWriter writer; decoder = BitmapDecoder.Create(s,…

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• Undefined method for a belongs_to association

  - by marimaf

  My code: class User < ActiveRecord::Base belongs_to :university end class University < ActiveRecord::Base has_many :users, dependent: :destroy end and my model User has a university_id attribute. If I do University.find(1).users I get the list of users, but if I do User.find(1).university (and I checked that…

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• Escape characters in MySQL, in Ruby

  - by Swards

  I have a couple escaped characters in user-entered fields that I can't figure out. I know they are the "smart" single and double quotes, but I don't know how to search for them in mysql. The characters in ruby, when output from Ruby look like \222, \223, \224 etc irb> "\222".length => 1 So - do you know how to…

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• Rails: associate model with two of its kind

  - by Patrick Oscity

  hi all, im trying to do this: class Event < ActiveRecord::Base belongs_to :previous_event has_one :event, :as => :previous_event, :foreign_key => "previous_event_id" belongs_to :next_event has_one :event, :as => :next_event, :foreign_key => "next_event_id" end because i want to enable the user…

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• What type of data store should I use for my ios app?

  - by mwiederrecht

  I am pretty new to ios and using servers so forgive me. I am building an ios app for research. I need to monitor things that the user does and then push it up to a server for analysis (yes, with user and IRB permission). On the client's side I need to keep quite a bit of data that won't really change except in the…

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• Boolean comparison of array of strings in Ruby

  - by Kyle Kaitan

  I've got an array in Ruby that essentially represents a square boolean matrix. Dots represent zeroes, while any other character represents ones. Example: irb(main):044:0> g => [".b", "m."] # This grid has two '1' values and two '0' values. I'd like to perform a specified logical operation (say, OR) on this…

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• Ruby on Rails has_one Model Not Supplying ID Column

  - by Metric Scantlings

  I have a legacy rails (version 1.2.3) app which runs without issue on a number of servers (not to mention my local environment). Deployed to its newest server, though, and I now get ActiveRecord::StatementInvalid: Mysql::Error: #23000Column 'video_id' cannot be null errors. Below are the models/relationships,…

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• RVM can't switch to Ruby 1.9.1

  - by Marco

  I installed Ruby 1.8.7 through apt-get. I then installed 1.9.1 through RVM. The RVM 1.9.1 installation was successful: root: rvm install 1.9.1 <i>Installing Ruby from source to: /usr/local/rvm/rubies/ruby-1.9.1-p378 </i> <i>/usr/local/rvm/src/ruby-1.9.1-p378 has already been extracted.…

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• Cannot execute "LOAD DATA LOCAL INFILE" Mysql query in Rails after a connection reconnection

  - by Ngan

  On Rails 2.3.8 (but I think Rails 3 might have this issue as well, not sure): I get an error when trying to execute a LOAD DATA LOCAL INFILE query after reconnecting to a database. I have a process that parses a file that can potentially take a bit of time. During the parsing, Mysql closes the…

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• On saving a new record an associated id changes to 9 figure number

  - by Dave

  Hi, I have a table of venues, with each venue belonging to an area and a type. I recently dropped the table and added to it some addressline fields. I have re-migrated it but now the area_id field saves as a random? 9 figure number. Both the area_id and venuetype_id integers are created in the…

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• Cisco: unable to negotiate IP using IPCP with Windows server

  - by lnk

  I am connecting to Windows server using PPP (for vpn), I establish connection but server does not respond me for my address requests: *Mar 23 00:40:06.055: Vi1 MS-CHAP-V2: I CHALLENGE id 0 len 25 from "MSDC" *Mar 23 00:40:06.063: Vi1 MS CHAP V2: Using hostname from interface CHAP *Mar 23…

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• How to validates cyrilic email in Rails 3.1?

  - by iKeler

  Let's say I had the email address like putin-crab@?????????.?? How to validate that address in rails 3.1? My Model(i use Mongoid): #encoding: utf-8 class User include Mongoid::Document field :email, :type => String validates :email, :presence => true, :format => {…

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• has_one and has_many associations: which side of the association is saved first

  - by SeeBees

  I have three simplified models: class Team < ActiveRecord::Base has_many :players has_one :coach end class Player < ActiveRecord::Base belongs_to :team validates_presence_of :team_id end class Coach < ActiveRecord::Base belongs_to :team validates_presence_of…

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• When saving a model with has_one or has_many associations, which side of the association is saved fi

  - by SeeBees

  I have three simplified models: class Team < ActiveRecord::Base has_many :players has_one :coach end class Player < ActiveRecord::Base belongs_to :team validates_presence_of :team_id end class Coach < ActiveRecord::Base belongs_to :team validates_presence_of…

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• How to select table column names in a view and pass to controller in rails?

  - by zachd1_618

  So I am new to Rails, and OO programming in general. I have some grasp of the MVC architecture. My goal is to make a (nearly) completely dynamic plug-and-play plotting web server. I am fairly confused with params, forms, and select helpers. What I want to do is use Rails drop…

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• Can't create admin user on Heroku

  - by Nick5a1

  I am new to rails and I have gone through Kevin Skoglund's Ruby on Rails 3 Essential Training course on Lynda.com. Through the course you set up a simple cms, which I did. It doesn't cover Git or deployment but I've pushed my simple cms to github…

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• Cisco SR520w FE - WAN Port Stops Working

  - by Mike Hanley

  I have setup a Cisco SR520W and everything appears to be working. After about 1-2 days, it looks like the WAN port stops forwarding traffic to the Internet gateway IP of the device. If I unplug and then plug in the network cable connecting the…

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• Cisco 891w multiple VLAN configuration

  - by Jessica

  I'm having trouble getting my guest network up. I have VLAN 1 that contains all our network resources (servers, desktops, printers, etc). I have the wireless configured to use VLAN1 but authenticate with wpa2 enterprise. The guest network I…

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• Why is this RMagick call generating a segmentation fault?

  - by Grant Heaslip

  I've been banging my head against the wall for the better part of an hour trying to figure out what's going wrong here, and I'm sure (or rather hoping) it's something fairly obvious that I'm overlooking. I'm using Ruby 1.9.1, Sinatra 1.0,…

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