similar to: Saving an ActiveRecord object

Hola a todos, me ha gustado mucho la solución de Carlos, muy eficiente y muy ingeniosa al utilizar la funcion col() que o no la conocia o no me acordaba de ella. La parte mas "lenta" sigue siendo el apply que en el fondo no es mas que un ciclo for a traves de las filas, asi que inspirado por el metodo de Carlos pense que podria ser mas rapido si iteramos a traves de las columnas por lo

Por último, utilizando la indexación lineal de matriz que propusó luisfo en su momento: > t <- Sys.time() > M=as.matrix(dat) > index <- which(!is.na(M)) - 1 > meses<-colnames(M) > M2<- data.table(columna=index %/% nrow(M) +1L, jugador=index %% nrow(M) +1L , valor=M[index+1L]) > setkey(M2,jugador,columna) >

Otra solución algo más rapida: > t <- Sys.time() > dat[,jugador:=1:.N] > dat2=melt(dat,id.vars="jugador") > setkey(dat2,jugador) > dat2[,index:=min(which(!is.na(value))),by=jugador] > dat2[,.(First_month=variable[index[1]],Value_First_month=value[index[1]]),by=jugador] jugador First_month Value_First_month 1: 1 Uno 0.93520715 2:

Has anyone else had problems with this scenario? class Team < ActiveRecord::Base # Primary key self.primary_key = ''team_id'' has_many :players, :foreign_key => :team_id has_permalink :city, :param => true end I am getting all kinds of trouble - that goes away if I comment out the has_permalink declaration. With PermalinkFu: >> fs = Team.new =>

Hi all, My question is somewhat complicated, but bear with me. My project has a number of models: User, Program, and Team. Users belong to multiple Programs. Programs have multiple teams, but Teams belong to one program. For each Program a User belongs to, he can belong to multiple Teams. (Think of this in an athletic context where users are athletes, programs are universities). So my

I''m using edge rails. My routes.rb is: map.connect '':controller/service.wsdl'', :action => ''wsdl'' # Install the default route as the lowest priority. map.connect '':controller/:action/:id'' map.resources :team <---- THIS LINE ADDED BY ME Also have a team_controller.rb, a team.rb model and scaffolding for it. If I

# Controller def create @person = Person.new(params[:person]) @address = Address.new(params[:address]) ... end If a person has an address, how can I save some data into 2 different tables? Can I do the following? @person.address = @address if @person.save render ... else render_text "Error" end Or do I have to use: if @person.save if @address.save render ... else

Hi, I''ve got my little app working pretty well. I''m using pretty much the model and table layout from my previous thread, as suggested by Bill Katz: <http://www.ruby-forum.com/topic/52506#26260> I have the Create page working and a delete Match page working, which along with the appropriate record in the Matches table, removes the linked items in the competitions table.

Do I need to edit routes.rb to get the following behavior? URL ==> method (source) /admin ==> AdminController#index (/controllers/admin_controller.rb) /admin/teams/list ==> Admin::TeamController#list (/controllers/admin/team_controller.rb) /admin/teams/edit/1 ==> Admin::TeamController#edit(:id => 1) (/controllers/admin/team_controller.rb) And will it wreck havoc with my

Bad rails day for Matt- In a migration, for a habtm: create_table :teams_users do |t| t.column :team_id, :integer t.column :user_id, :integer end Ok, fine. In a controller (well really a migration script): @user.teams << Team.find( 3 ) And the SQL pumped at my server is: INSERT INTO teams_users (`team_id`, `id`, `user_id`) VALUES (3, 3, 34) Which

I have the following tables teams id :string name :string and matches id: home_team :team_id visitor_team :team_id how can I reflect that kind of relationship in a RoR model? thanks and keep up the good work.

I have been working through an upgrade of my 1.2.6 application to 2.2.2. I am almost there but I have hit a problem with ActiveRecord. Before the upgrade, the following code was working fine. def create_root(administrator) root = create_root_collection(self.pingee_name, administrator,

Long time programmer, but I just started learning RoR last week. I am going through some examples in the book "Ruby on Rails: Up and Running". The example I am on had me add a table to the database that looks like so: CREATE TABLE people ( `id` int(11) NOT NULL auto_increment, `type` varchar(20) default NULL, `name` varchar(20) default NULL, `email` varchar(30) default NULL,

the below... class User < ActiveRecord::Base has_and_belongs_to_many :teams class Team < ActiveRecord::Base has_and_belongs_to_many :users has_one :captain, :class_name => ''User'' produces the error... Mysql::Error: Unknown column ''users.team_id'' in ''where clause'': SELECT * FROM users WHERE (users.team_id = 1) LIMIT 1 i

Imaginemos que tenemos una matriz con datos temporales por sujetos. Pongamos que numero de veces que ha jugado una carta en un juego online. Y que quiero saber cuantas veces jugo la carta el primer mes que estuvo en el juego. Pero claro mi matriz guarda los datos temporalmente de tal manera que: # data.table( Enero = c( 1, 4, NA , NA , NA) , Febrero = c( 2, 6, 1, NA, NA ) , Marzo = c( 8,6,7,3,

Buenas tardes, Quiero extraer datos de una web en la que ser relaciona la semana con la puntuación obtenida por un jugador. Ahora mismo llego a obtener elnodo en el que se relacionan la semana con la puntuación obtenida, pero no soy capaz de extraer esa informacion en una tabla de dos columna (semana, puntuacion) teniendo en cuenta que puede que haya semanas que no haya puntuado (en el ejemplo,

I just have a few questions about join tables. From my understanding the following applies (correct me if I''m wrong): 1.Join tables are always named with the names of the two associated tables, in alphabetical order, separated by an underscore. 2.The foreign key fields are named with the name of the table they are referencing, with _id appended. 3.The foreign key is referencing a

Hello, I''m in troubles with nested routes. I have three models: Team, Tournament and TeamTournaments class Team < ActiveRecord::Base has_many :tournaments, :through => :team_tournaments has_many :team_tournaments class TeamTournament < ActiveRecord::Base belongs_to :team, :foreign_key => ''team_id'' belongs_to :tournament, :class_name =>

Muchas gracias a ambos!!!! Las dos soluciones me han funcionado. Un saludo. El día 18 de enero de 2016, 18:35, Carlos Ortega <cof en qualityexcellence.es> escribió: > Hola, > > Pero, si ya casi lo tienes... te quedan un par de pasos y ya está... > > Simplemente tienes que transformar "puntos_nodo" a bien un data.frame aunque > quedará lleno de cosas que no te

Hi all, I have a question about filtering on a variable. If I have the following code in my controller to select a list of users > @allusers = User.find(:all, > :conditions => [''team_id = ?'', @params["id"], > :order => ''created_at'') Is there an easy way to find out all users who