similar to: Retrieve table names

I have models with large TEXT, BLOB columns and I don''t wanna fetch them everytime. Is it possible to omit columns when fetching records from DB? Sorry, if it''s trivial, but I can''t find helpful information in docs.

I it possible to install gems into custom directory (user dir)? There no any specific parameters in setup.rm I don''t wanna see unpackaged binaries into my Debian system ;) Or maybe someone can send me a link with .deb''s? Thanks in advance.

Hi all. I have a problem with postgresql PK columns and ActiveRecord. The error is: PGError: ERROR: null value in column "item_id" violates not-null. Ok, it''s wrong to insert NULL into PK columns, but rails doing it. How to fix? So sad..

Classes like activerecord, etc contains strange elements like ''belongs_to :something'', ''has_many :smth'' etc.. what is it? I can''t find them in ruby lang documentation.. it''s similar to ''attr_accessor'' and other costructions, how I can create my own constructions and how I must understand them? Could anyone give me some links

I am trying to make many-to-may relationship on classes Section and Content. Both Content and Section has: has_and_belongs_to_many :contents and has_and_belongs_to_many :sections and I have an exception when trying to access model properties: "undefined method `add_contents'' for #<Section:0xb745c514>" def add_content_entry @section = Section.find(params[:section_id])

I simply trying to receive an array of objects, retrieved by ActiveRecord from table with datetime column and I have: test_list(SoapControllerApiTest): ArgumentError: 3 elements of civil date are necessary /usr/lib/ruby/1.8/date.rb:1214:in `new_with_hash'' /usr/lib/ruby/1.8/date.rb:1258:in `parse'' .... It''s a bug or I am wrong somewhere?

Hi. I need to use functions INET_ATON, INET_NTOA for IP address retrieving. Is it possible to make this transparently (without custom SQL for saving, updating and retrieving)?

I have a log table which has a column recording the number of hours worked on a task. So there''ll be multiple lines for a particular task. I want to retrieve the total number of hours worked on a task, so that I can include the information when one views the task details. I can write a sql query to do this easily enough, like "SELECT SUM(hours) AS total FROM tasklog WHERE

Hi all, I came accross the following problem lately: I got a table with several BLOB fields (Oracle DB) and I have ActiveRecord reading those fields whenever records are loaded using finder methods. This behavior is just fine in 99.9% of the time, but considering BLOB data is not small, it is considerably slowing down search access :(. So basically, I thought about building a :has_one

I'm going to use dhyper(x, m, n, k) to get a 95% coverage. Let me use an example to explain my problem: Suppose I have a urn containing 90 red and 10 black balls. Now I wanna remove 3 from the urn. By the following codes: m<-90;n<-10;k<-3; x<-0:3 dhyper(x,m,n,k) I can obtain the probability that 0,1,2,3 red balls will be removed. 0.000742115 0.025046382 0.247680891

hey, i was wondering how to do this i have these models phones and location class Phone < ActiveRecord::Base belongs_to :location end class Location < ActiveRecord::Base has_many :phones end when i wanna find all locations, that the model also find the phones for each location Now i get the locations, need only 1 location X, then get all phones for location X. These are 2 database

Hi, As told in "Control Groups Resource Management" libvirt page : Legacy cgroups layout Prior to libvirt 1.0.5, the cgroups layout created by libvirt was different from that described above, and did not allow for administrator customization. Libvirt used a fixed, 3-level hierarchy libvirt/{qemu,lxc}/$VMNAME which was rooted at the point in the hierarchy where libvirtd itself was

hi all, im starting in the linux world !! so this is my question : i wanna run 1app that is installed in my windows partition. the app im refering is world of warcraft, this game does not have any entry in the windows registry (on windows machines you can copy the wow folder from one hd to another hd on other computer and play without reinstall) so i think it must be possible to run the game

If I have a HABTM relationship between two models (places, pictures), can I delete the record from the join table without also destroying the objects? IE: 1. @places.pictures << @picture 2. @places.pictures.find( @picture.id ).destroy I''d want line #2 (...or something similar unless I''m way off) to destroy the record in pictures_places only, and not anything from the

Howdy: I'm a newbie of LLVM. I want to make sure that my way is correct. Plz tell me... we design a new processor with a new arch. we wanna get a compiler as fast as possible. The target code of the new compiler is machine code. So, is it I just to create a whole new backend for our new processor, right? And then???? Thx.

hey, i my database i have users and groups, each user can get in different groups my db structure: table groups: id, name, basegroup, firm_id table users: id, firstname, lastname, email table groups_users: group_id, user_id my relation is a many to many: class Group < ActiveRecord::Base has_and_belongs_to_many :users end class User < ActiveRecord::Base has_and_belongs_to_many

In a social netowrk data model, users belongs other users, and can have many friends as users, so it is a many to many relatioship. the class definition could be class User < ApplicationController has_mang_ang_belongs_to users But how it looks like in the mysql database tables in a "joined" users table. The question really is: what is the table looks like when a model has

Hello All, Any one using acts_as_enumerated? I need help using (I like that it caches values in memory) I am working on a dating website and there are lots of options I want to store as enumerated like Status; divorce, single, Sex: male, female Eye color; blue, brown, green.... and lots more.... But I do not wanna keep them in seperate tables, and wanna keep them all together. Anyone has a

How do i get (discover) all the table names within a database using ROR/ActiveRecord ? I wish to build a webapp that connects to a database on the fly, discovers tables and column names etc and then can show data or build a report based on user selection. The ActiveRecord API doesnt seem to give any method for getting table names. -- Posted via http://www.ruby-forum.com/.

hi, just wondering do migration support MySQL BIGINT ? what if i wanna create a migration with BIGINT ? should i use SQL directly ? kiwi -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to