similar to: update_attrbutes without saving?

Hello all, I have a model with two entities (document and asset) and a 1:1 relationship defined between them (every model has an asset). I want to generate a rthml view that generates a hash for document attributes and a nested hash for asset attributes (for example {:document =>{:name=>XXX :asset => {date =>XXX}}) According to the Pragmatic Programmers book (page 355), the input

Getting this error when hitting update. NoMethodError in Article#update You have a nil object when you didn''t expect it! You might have expected an instance of ActiveRecord::Base. The error occured while evaluating nil.update_attributes Source code. def create @article = Article.new(params[:article]) @article.user = @session[''user''] if @article.save

Hey All, I''ve been having a slight problem updating attributes for a row that matches something other than it''s ID...For ex: My table that has 3 rows..ColumnID, ColumnTitle, and ColumnDescription. I want to update a row in that table WHERE CoumnTitle = @myvar....But whenever i run update_attrbutes[:mytable] it''s looking for an id for the record when i need to to

I wanted to fix some things up in the trunk, so I set up the databases and ran the unit tests. A bunch fail for postgres, and even more error out. I know of two postgresql adapters: postgres-pr and ruby-postgres. Strangely, they each fail different tests. So if I want to fix things up, which one should I be using? For that matter, which adapter should I be using for production? Finding out

Not sure if this is possible currently. I have a section of code like this: ActiveRecord::Base.transaction do cow.save! duck.save! dog.save! end (Names changed to protect the innocent.) I''d like to specify that the saves run in a transaction. I can do ActiveRecord::Base.should_receive(:transaction).and_yield But is there any way to specify that the code is

Hi everybody, Small problem. I get this error: undefined method `all_categories'' for BlogCategory:Class Code of BlogCategory class is: class BlogCategory < ActiveRecord::Base has_and_belongs_to_many :blog_posts validates_presence_of :name validates_uniqueness_of :name # Return all categories ordered by name def all_categories find :all, :order =>

Hi, Every once in while I have to run SQL by hand, in my models mostly. But I''m wondering if there is a better way of doing it than I do. And, I have a question concerning types of the fields in the result the query produces. First, about the types. In a certain model, to get and return the value of a boolean function, I have to do: result =

Hello to all! First I want to appologize if this topic has been already discussed but the search does not work :) I have RoR installed on a shared server. I also have a RoR application installed in a subdomain. The structure is as follows: www //this is my home WWW folder +--- www //maps to www.mydomain.com | +--- webapp //maps to webapp.mydomain.com. Here is my RoR application |

Since upgrading to Rails 1.1, I now get these errors: PGError: ERROR: null value in column "added" violates not-null constraint : INSERT INTO authors ("added", ...) VALUES(NULL, ...) The ''added'' column has a default of current_timestamp, and this used to work fine with Rails 1.0. Are we supposed to put default values in models'' before_create or

Hello! I am trying to figure out how to implement *logical deletes* instead of physical deletes using ActiveRecord. Basically, in many applications that deal with E-Commerce, you really can''t physically delete almost anything, because records must be kept for auditing and customer service tracking purposes. In the past, I''ve implemented logical deletes as follows: 1.

Hi all, I had scaffold generate some code on a brand new app the trace is here: http://rafb.net/paste/results/H87GHC68.html Could you point me to what problem needs to be fixed please as i''ve been banging my head against this for some time now? The table is very simple and its called "user" with id, email, password fields. I''ve set pluralize_table_names to false

Hello gentlemen, I''ve forced to such unicode problem: I have: <%= text_field_tag ''search'', nil, :id => ''search'', :size => 10 %> <%= observe_field ''search'', :url => {:controller =>

Queridos R-users: Tengo una duda que hace mucho tiempo que estoy intentando resolver, os explico a modo de ejemplo: Tengo estos efectos: Año(5 niveles),Localidad (10 niveles) y genotipo (3 niveles), año y localidad son aleatorios y genotipo es fijo (los he escogido yo). Me gustaría hacer obtener una tabla parecida a la Tabla Anova donde aparezca cada factor y sus interacciones y

Hello You must add first: vlan (tagged) to eth2 eth2 interface is not tagged by default and not know vlan-s . It is like a cisco if you have 24 ports in cisco by default all ports are in vlan1. if you want to do trunk (with vlans) you myst add (vlans) to this ports (tagged or untagged) So you can compare that all interfaces in linux by default are in one vlan(but not tagged). (only for

Hi, I''m trying to use rails to build a model from a database view. I get this output C:\dev\v6\project>ruby script/generate scaffold Assignment ... error Before updating scaffolding from new DB schema, try creating a tab le for your model (Assignment) Is this not possible in Rails? It would be *really* helpful for my application. -------------- next part -------------- An

I''m having a spot of bother creating a ''has_many'' relationship between two legacy database tables. The relationship is ''company'' table has many linked records in the ''contact'' table. Iv''e used ''generate scaffold'' on these tables and everything is fine. I then decided to define the relationship in the

Hi, When a IPSec tunnel is established between two peers, I understand that the "normal" situation is to have in a given moment two SAs, one for each direction of the tunnel. However, in one of my tunnels (peer P1 running GNU/Linux with setkey and racoon; peer P2 is a Cisco router) there is a large number (around 19) of SAs established (this has been observed in P1 with

Hi, for some reason, all timestamp fields with or without time zone in my Postgres tables seem to be casted to nil. From console: >> me = User.find(''PS12345'') => #<User:0x2379788 @attributes={"mtime"=>"01.03.2006 13:26:32.737166", "valid"=>"8", "valid_from"=>"01.03.1999 14:09:21 CET",

Hi I have a problem accessing an array field in a Postgresql database. Here is the table definition. View "neil.flashing_codes" Column | Type | Modifiers -------------+-----------------------+----------- code | character varying(10) | description | text | folds | integer[] | View definition: SELECT

Hi all I used the search for this, but I got an Application Error, so sorry for the newbie question. I have tried to send an e-mail using ActionMailer. I have to following config (environment.rb): ActionMailer::Base.server_settings = { :address => "mail.psyguide.org", :port => 25, :domain => "mail.psyguide.org", #:authentication => :login, #:user_name