similar to: arel engine

Hello all, I''ve recently been on a project where somewhere needs using case insensitive search(using UPPER(name) LIKE '''') and LIKE condition, I want to use arel and don''t use the old style string concatenation, can arel handle this? But I check on arel documentation, doesn''t seems have any upper/like operator, and check on arel source, under

I''m trying to figure out how to use ActiveRecord in conjunction with ARel. In particular, I''d like to replace my residual literal SQL with ARel, if only I could see how. Let''s take Article with multiple Versions as an example. With ARel alone, I can find articles with their latest versions like this articles = Article.arel_table versions = Article.arel_table

I have the following code: advertisements_arel = Advertisement.order("advertisements.id DESC").arel @advertisements = (params[:website_id].present? ? advertisements_arel.where(:website_id => params[:website_id]) : advertisements_arel).to_a It returns a struct Arel::SelectManager::Row data But I''d like it to return an array of Advertisement objects (like it would

Hi, I''ve search for documentations on queries with Arel 2 but there is pretty nothing and all I''ve found is for Arel 1 so I''ve run into NoMethodError: undefined method `[]'' for #<Arel::SelectManager:0x00000003f1b820> errors with join syntax. My query is barely simple but involve nesting queries. I have 4 tables. Assets, Deposits, Orders and OrderLines

I trying to create a select using Arel but I''m passing three parameters, I want to include the parameters only if they are different to nil or blank. Here is my method: def self.advsearch(summary_description, specialties, place) User.joins(:experience,:summary,:information) .where(Information.arel_table[:business].eq(false))

Hi, I''ve been playing with Arel for a few days, but I feel really confused about predicates / arrays intersection. Let''s say I have 3 models: users, (bank) accounts and transfers. An account belongs to a user, and a transfer is made of a source and target accounts (see the snippets below). Given a user, I want to query his transfers. I can go this way in the User class: def

I have a real-world application with some complex queries that I want to convert to Arel (as part of an upgrade to Rails 3.1). So that I can understand what I''m doing before I flail around in my real app, I wrote a little sample app (just the models) with some similar associations -- one table joined with itself and more tables that join to another table, so there are some queries that

merge_conditions seems to be gone from rails 3. Is there something in Rails 3 or Arel that would allow me to achieve the same thing, which is to merge various types of conditions (array, hash, etc)? I haven''t spent much time with Arel, so I may be missing something obvious. Thanks -- You received this message because you are subscribed to the Google Groups "Ruby on Rails:

I''m building rails 3 with legacy oracle 10g db. which it''s sequence is non rails convension. I have try this. class AdCourt < ActiveRecord::Base set_sequence_name ''COURT_SEQ'' end with rails console : AdCourt.sequence_name I have got "COURT_SEQ" which look ok. When AdCourt.create!(:caption => ''AAAA'', :code =>

Hello everyone, I would like to eager load scoped records to avoid queries executed in a loop (huge performance impact). The "scoped" part is what is giving me a hard time. I''m using Rails3 RC. Does anyone have any idea how I can do it? Here is a test case : we have an "Article" and a "Comment" Activerecord models, article has many comments comment

trying to set up a "has_and_belongs_to_many" relationship would very much appreciate the help, not sure what im doing wrong at all. Scheme.rb class Scheme < ActiveRecord::Base validates :schemename, :presence => true belongs_to :user has_many :levels, :dependent => :destroy has_and_belongs_to_many :works end Work.rb class Work < ActiveRecord::Base

What is the recommended way to use table aliases with ActiveRecord::Relation these days? In prior versions of Rails, this would work: assume (pseudo code): model A has_many b''s model B ,,, at = B.arel_table atalias = at.alias(at.name + "_1") A.join(:b).join(atalias).where(atalias[:a_id].eq(at[:a_id]).where("b.widget =

im a begginer in RoR and am using rails 3.2.3 and ruby 1.8.7 This forum has helped me to progress but I''m confused by one thing. My app is supposed to allow seaching for results depending on the check boxes that are checked. In my case, when the user checks a determined facility and clicks "search" the corresponding hotels with only those facilities should be returned. I can

I have a form that allows me to search a hotel by city or name and by rating through radio buttons. It all works. However, my hotel model has_one :facility, this facility model is composed by several boolean fields (for example, roomservice:boolean restaurant:boolean and so on) The question is, I want to add checkbox fields for each facility I have and in the search form, when the user selects

Hello everybody, I have some troubles with uploading files in my Rails project. I use Rails 3, Ruby 1.9.2, rack 1.2.1, and both webrick / passenger on apache I was investigating and have isolated the strange behaviour on a simple empty project: view: <% form_tag({:action => ''upload''}, :multipart => true) do %> <%=text_field_tag :desc %>

Howdy all, I just wanted to point out a new positioning library we open-sourced at Harvest: http://hrv.st/f03yfi And github: https://github.com/harvesthq/ranked-model A couple reasons this is a nice option for positioning: * ARel! From the ground up this library uses ARel so sorts can be chained like any order() statement. * Multiple rankers for a single model. * Group sorted

Hello, Arel::SelectManager (arel 2.0.9) uses following statement to insert a new record: @engine.connection.insert im.to_sql, ''AREL'', primary_key_name, primary_key_value But in DatabaseStatements insert ist defined as: insert(sql, name = nil, pk = nil, id_value = nil, sequence_name = nil) Actually, Arel::SelectManager does not use the sequence name. This leads to issues

Hello, I''m new to Ruby and unix/linux development (although been building .net apps for years). I''ve almost completed my trek to install Rails ... looks like I have one final hurdle. After installing rails I try the ''rails -v'' command and it fails. Any help here would be deeply appreciated. Here''s the output from my bash session: bash-3.2$ ruby

Anybody know why this: User.find(current_user).update_attribute(:last_subject, params[:subject_id]) results in this: AREL (0.6ms) UPDATE "users" SET "last_subject" = 4, "encrypted_password" = ''f470e6e76203973146c3b07e8b31c976b19cb23a9bf37485ad1911687cdc7a29'', "updated_at" = ''2011-10-12 13:43:21.727558'' WHERE

Hello rubyonrails-core, I’ve been looking into possible changes to ActiveRecord / Arel to make it easier to write Rails applications that are free of SQL injection vulnerabilities, and in particular do so in a way that makes it easy for a code reviewer to verify that the app is safe from such bugs. The concern: ----------------- With the ActiveRecord API as is, it’s relatively easy to write