similar to: Numbering entries for each subject

Hi I'm new to R and would like some help with a couple of problems. I suspect the solutions are quite simple. I have a data.frame (data) with 40 variables and 5238 observations created from ~150 text files using read.table. I would like to change some of the entries within two different columns. Firstly, in the Group column I have groups A and B, I would like to select all As and change

Hello, I have an old table that handles sessions. the primary key is a field called session_id and is the actual session id like "8df838303ufdfu838" however when i do the following in the model: set_primary_key "session_id" and the following in the controller: @session_hash = { "session_id" => @session.session_id, "session_user_id" =>

Sorry to be such a bother but I''m not getting this. I have two models: Emrec and Session (I''m using AR for session mgmt.) In my worker I can access the Emrec model and delete a record, AS LONG AS I don''t try to access the Session model. With the Session model access commented out as below, the Emrec record gets deleted. If I uncomment those lines, the Emrec

I thought I understood how to grab the session id but in the following code I am getting null for the session id: @foo = Foo.new(:session_id => session[:session_id], :test_id => @test.id) -- Posted via http://www.ruby-forum.com/.

I am using active record sessions and everything works fine. I am integrating it with phpbb however so i need some extra fields populated in the session table. In application.rb i put a before_filter to update the session table I have a model for the sessions $ more app/models/session.rb class Session < ActiveRecord::Base set_primary_key "session_id" set_table_name

On 11/28/2016 06:19 PM, Michael S. Tsirkin wrote: >>> +static int virtio_crypto_alg_ablkcipher_init_session( >>> > > + struct virtio_crypto_ablkcipher_ctx *ctx, >>> > > + uint32_t alg, const uint8_t *key, >>> > > + unsigned int keylen, >>> > > + int encrypt) >>> > > +{ >>> > > + struct

On 11/28/2016 06:19 PM, Michael S. Tsirkin wrote: >>> +static int virtio_crypto_alg_ablkcipher_init_session( >>> > > + struct virtio_crypto_ablkcipher_ctx *ctx, >>> > > + uint32_t alg, const uint8_t *key, >>> > > + unsigned int keylen, >>> > > + int encrypt) >>> > > +{ >>> > > + struct

Hi, I put the following in my environment.rb file: ActionController::CgiRequest::DEFAULT_SESSION_OPTIONS.update (:database_manager => CGI::Session::ActiveRecordStore) Runnning WEBrick via "script/server" and trying to load any page served by a controller results in an error like the following: #<ActiveRecord::StatementInvalid: ERROR: null value in column "id"

Hello, Running Ruby 1.8.6 and Rails 2.2.2 against an Oracle XE database (sigh). I just upgraded Rails from 1.2.3 to 2.2.2, which made my cookie based system for storing session information to error out due to the 4Kb limit. So, I tried to turn on the active_record_store system by un- commenting out the "config.action_controller.session_store = :active_record_store" line in

Hey all. I have two apps. One is a rails3 app and the other is a rails 2 app. Using proxying I am routing actions in the myapp.com/foo to the rails2 app. It almost works! I can set a session variable and a cookie variable on the first app (myapp.com) and then read them on the second app (myapp.com/foo). It only works the first time though. If I go back to myapp.com and then revisit

Hi I would like to set my own session_id instead of a md5 value. Any ideas? Thanks Seb

I''m using backgroundrb for session management and deletion of visitor-entered information when a session is abandoned. The visitor can either click a button to end their session and remove their data, or backgroundrb will do it for them after 5 minutes of inactivity. Everything''s working fine, I think. If the visitor explicitly logs out, then when the worker checks for their

# Proposal Provide a built-in mechanism for obtaining an identifier for the current R session, e.g. > Sys.info()[["session_uuid"]] [1] "4258db4d-d4fb-46b3-a214-8c762b99a443" The identifier should be "unique" in the sense that the probability for two R sessions(*) having the same identifier should be extremely small. There's no need for reproducibility, i.e.

On Tue, Nov 22, 2016 at 04:10:23PM +0800, Gonglei wrote: > This patch introduces virtio-crypto driver for Linux Kernel. > > The virtio crypto device is a virtual cryptography device > as well as a kind of virtual hardware accelerator for > virtual machines. The encryption anddecryption requests > are placed in the data queue and are ultimately handled by > thebackend crypto

On Tue, Nov 22, 2016 at 04:10:23PM +0800, Gonglei wrote: > This patch introduces virtio-crypto driver for Linux Kernel. > > The virtio crypto device is a virtual cryptography device > as well as a kind of virtual hardware accelerator for > virtual machines. The encryption anddecryption requests > are placed in the data queue and are ultimately handled by > thebackend crypto

Hi, I wrote a authentication script and I''m calling it like this in every class: class Blah < ApplicationController before_filter :auth def auth req_perm = Permission.find_by_name("Permission Blah") access = AccessController.new() if access.is_logged_in(session.session_id) if !access.get_current_user(session.session_id).role.permissions.include? req_perm redirect_to

On Mon, Nov 28, 2016 at 08:08:23PM +0800, Gonglei wrote: > This patch introduces virtio-crypto driver for Linux Kernel. > > The virtio crypto device is a virtual cryptography device > as well as a kind of virtual hardware accelerator for > virtual machines. The encryption anddecryption requests > are placed in the data queue and are ultimately handled by > thebackend crypto

On Mon, Nov 28, 2016 at 08:08:23PM +0800, Gonglei wrote: > This patch introduces virtio-crypto driver for Linux Kernel. > > The virtio crypto device is a virtual cryptography device > as well as a kind of virtual hardware accelerator for > virtual machines. The encryption anddecryption requests > are placed in the data queue and are ultimately handled by > thebackend crypto

Dear Gurus on Rails! How do I change the behaviour of one method in ActiveRecord::ConnectionAdapters::SchemaStatements ? Full story: I''d like to mangle ActiveRecord::ConnectionAdapters::SchemaStatements so when it creates a new sql table, it also (optionally) creates my created_at, deleted, key_id, session_id etc columns that I use on basically all tables. It would not be DRY to repeat

Hi I get to about page 103 of the book and get an application error. Further investigation reveals the following error in the dev log: Mysql::Error: #42S22Unknown column ''id'' in ''where clause'': UPDATE sessions SET `data` =