similar to: ActiveRecord#to_param

Shouldn''t update_all be updating lock_version? As you can see from my console session below, it is upating the record (changed running attribute to true and returned 1 to show 1 recored was updated). But it did not increment lock_version. And optimistic locking is working correctly otherwise. As you can see below, lock version = 562 before and after the update_all call but it is

Consider: > x <- matrix(1:6, 2,3) > rownames(x) <- c("ID1", "ID2") > colnames(x) <- c("Attr1", "Attr2", "Attr3") > x Attr1 Attr2 Attr3 ID1 1 3 5 ID2 2 4 6 > write.csv(x,file="x.csv") "","Attr1","Attr2","Attr3" "ID1",1,3,5

Dear R experts, I would really appreciate if you had an idea on how to use more efficiently the aggregate method: More specifically, I would like to calculate the mean of certain values on a data frame,? grouped by various attributes, and then create a new column in the data frame that will have the corresponding mean for every row. I attach part of my code: matchMean <-

I''m working on an app that makes use of rails'' optimistic locking feature and seeing some possibilities for improvements. It seems a bit tedious to have to add :lock_version to forms wherever the model is used. You also have to "hack" around rails'' UJS feature to add it as a URL parameter when using remote: true, method: [:put, :patch, :post, :delete].

Hi I am new to ruby on rails I need to know one thing Is there any way to externalize all the error messages in one file and access -- Karthik.k Mobile - +91-9894991640

Hi, I have 100000 units with 10 attributes (attr1, attr2, attr3, etc...) For instance: unit attr1 attr2 attr3 ... 1 a ww 12 2 a re 11 3 b ww 09 4 c yt 02 5 a qw 02 ... I'd like to answer to the question: a) what are the most frequent combinations of attributes? b) How could I describe the relations

In R-devel (svn 49628) and back to at least R 2.7.0 we get inconsistent results when attempting to attach attributes to a variable with the value NULL. If we use attributes<- it finishes but changes the value to list(). > a<-NULL > attributes(a)<-list(attr1="First attribute", attr2=2+2i) > a list() attr(,"attr1") [1] "First

All, I''ve written a simple job/opportunity tracking database app via RoR. I have about 10 internal users. Sometimes 2 people will want to update the same record at more or less the same time and they collide. In particular user 1 may edit a record, then get distracted, and finally an hour later they click save. During that hour user 2 may have pulled up the record, edited it, and

Ok, So, I''ve got two data tables associated through a foreign key. class Child < ActiveRecord::Base belongs_to :parent, :class => Parent, :foreign_key => "parent_id" # also has attr1, attr2 end class Parent < ActiveRecord::Base has_many :children, :class => Child, :foreign_key => "parent_id" end So, I''m trying to build the new/edit

Is there option for deleting xattr-s same as --delete for files, because it seems deletion of xattr don't sync, however it is synced when data of file change, see example below. Maybe this is a bug or maybe this is ok? System gentoo attr-2.4.32, rsync form today cvs. -- Regards Stanislaw Gruszka stasiu@sg /mnt/hda5/export $ echo "data" > file stasiu@sg /mnt/hda5/export $

I find myself writing the following frequently: r = MyActiveRecord.where(:attr1 => cond1, :attr2 => cond2, ...) r.exists? ? r.first : r.create ... which has the effect of returning an instance of MyActiveRecord if all the conditions are met, or creating one if it doesn''t. A variant of this: c = MyActiveRecord.new(:attr1 => val1, :attr2 => val2, ...) r =

Hi everyone, I have a order with order_lines use case. On changing the lines, I want to be sure no one else changed the order. So I use lock_version on the order. This works fine if something is changed on the order record. But now i have the situation that I delete, alter and add order lines without changing the order record itself. I have to check and increment the order#lock_version however

Hi All, I''m having some trouble deciding when and how to implement optimistic locking. Let''s say I have a multiuser Rails app, and let''s say it stores, among other things "vital" customer information. The standard methods created by the Rails generate scaffold script look like this: def edit @customer = Customer.find(params[:id]) end

Hi, Is there a way to tell Rails that the magic field name for optimistic database locking is not lock_version? I have a legacy database where the optimistic locking field is named "version". Thanks, Phil -- Posted via http://www.ruby-forum.com/.

Hello, In my database, I have a table "products" with attributes : - id - title ->string - desc -> text I use active record, but I don''t know why recover the type of this attribute with active record? I try attributes_before_type_cast but I don''t see the type Can you help me? Excuse for my english (I''am a young student french) -- Posted via

Hi all I have a Model like this: class Member < ActiveRecord::Base attr_accessible :username, :email, :first_name, :last_name end I have created a scaffold using script/generate scaffold member members Using the URL localhost:3000/members/edit/1 I can edit all attributes, including created_at, lock_version etc.! But it should only show the attributes I listed in attr_accessible! What

Perhaps this is a Rails issue. However, I need to first determine whether I simply am missing something about updating members of an array. I have an array of 10 ActiveRecord objects. I wish to iterate over the array and update an attribute. When I do this the underlying table row changes but the object in the array frequently does not. For example: count = 0 current_entries.each do

Hi, for some models I found that it''s easier to share the controller new and update code just to share the view code. At the front of every such action function I have to lookup if the object already exists, if so "find" it from the database and update the "attributes=". If there is no such object, "new" it with the attributes I''ve got from the

When I use rbind() or rbind.data.frame() to add a row to an existing dataframe, it appears that attributes for the column of type "factor" are dropped. See the sample example below to reproduce the problem. Please suggest How I can fix this. Thanks, Sammy a=c("Male", "Male", "Female", "Male") b=c(1,2,3,4) c=c("great", "bad",

Does rails have any builtin functionality similar to that of ASP.Net''s encryptable ViewState? For those that don''t know what the ASP.Net viewstate is, it is essentially just a hidden form field with the name __VIEWSTATE, that stores a series of encoded(or encrypted) key/value pairs as it''s value. When the form is submitted the viewstate value is decoded/decrypted on the