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  • Schema for storing "binary" values, such as Male/Female, in a database

    - by latentflip
    Intro I am trying to decide how best to set up my database schema for a (Rails) model. I have a model related to money which indicates whether the value is an income (positive cash value) or an expense (negative cash value). I would like separate column(s) to indicate whether it is an income or an expense, rather than relying on whether the value stored is positive or negative. Question: How would you store these values, and why? Have a single column, say Income, and store 1 if it's an income, 0 if it's an expense, null if not known. Have two columns, Income and Expense, setting their values to 1 or 0 as appropriate. Something else? I figure the question is similar to storing a person's gender in a database (ignoring aliens/transgender/etc) hence my title. My thoughts so far Lookup might be easier with a single column, but there is a risk of mistaking 0 (false, expense) for null (unknown). Having seperate columns might be more difficult to maintain (what happens if we end up with a 1 in both columns? Maybe it's not that big a deal which way I go, but it would be great to have any concerns/thoughts raised before I get too far down the line and have to change my code-base because I missed something that should have been obvious! Thanks, Philip

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  • 1-st level routes for multiple resources in Rails

    - by Leonid Shevtsov
    I have a simple SEO task. There's a City model and a Brand model, and I have to create 1st-level URLs for both (e.g. site.com/honda and site.com/boston). What's the preferred routing/controller combination to do this in Rails? I can only think of map.connect '/:id', :controller => 'catchall', :action => 'index' class CatchallController < ApplicationController def index if City.exists?(:slug => params[:id]) @city = City.find_by_slug!(params[:id]) render 'cities/show' else @brand = Brand.find_by_slug!(params[:id]) render 'brands/show' end end end but it seems to be very un-Rails to put such logic into the controller. (Obviously I need to make sure that the slugs don't overlap in the models, that's done).

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  • Database locking: ActiveRecord + Heroku

    - by JP
    I'm building a Sinatra based app for deployment on Heroku. You can imagine it like a standard URL shortener but where old shortcodes expire and become available for new URLs (I realise this is a silly concept but its easier to explain this way). I'm representing the shortcode in my database as an integer and redefining its reader to give a nice short and unique string from the integer. As some rows will be deleted, I've written code that goes thru all the shortcode integers and picks the first free one to use just before_save. Unfortunately I can make my code create two rows with identical shortcode integers if I run two instances very quickly one after another, which is obviously no good! How should I implement a locking system so that I can quickly save my record with a unique shortcode integer? Here's what I have so far: Chars = ('a'..'z').to_a + ('A'..'Z').to_a + ('0'..'9').to_a CharLength = Chars.length class Shorts < ActiveRecord::Base before_save :gen_shortcode after_save :done_shortcode def shortcode i = read_attribute(:shortcode).to_i return '0' if i == 0 s = '' while i > 0 s << Chars[i.modulo(CharLength)] i /= 62 end s end private def gen_shortcode shortcode = 0 self.class.find(:all,:order=>"shortcode ASC").each do |s| if s.read_attribute(:shortcode).to_i != shortcode # Begin locking? break end shortcode += 1 end write_attribute(:shortcode,shortcode) end def done_shortcode # End Locking? end end

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  • Rails: updating an association

    - by Sam
    I have a Reservation model which belongs_to a Sharedorder and so a Sharedorder has_many reservations. Give you a little background. I sharedorder has many reservations and each reservation can have an amount. A sharedorder has three status: 1) reserved, 2) confirmed, 3) and purchased. Here is my problem. When a reservation gets added to a sharedorder or an existing reservation's amount is updated I need this to affect the associated sharedoder because the status listed latter should only change when 100% of the reservations have been placed and so on. Here are the things I have tried: . class Reservation < ActiveRecord::Base before_save :sharedorder_reserved_status def sharedorder_reserved_status if self.sharedorder.reserved_percent(reservations_to_be_added) >= 100 && !self.sharedorder.reserved self.sharedorder.update_attribute(:reserved, true) self.sharedorder.update_attribute(:reserved_at, Time.now) end end def reservations_to_be_added if self.new_record? self.amount elsif self.amount_changed? self.amount - self.amount_was else 0 end end end And then in the Sharedorder model: class Sharedorder < ActiveRecord::Base def reserved_percent(amount_change) (((reserved_sum + amount_change).to_f / self.product.twenty_hq_size.to_f)*100).to_i end def reserved_sum if !@reserved_sum reserved_sum = 0 reserved_reservations.collect {|x| reserved_sum += x.amount } reserved_sum else @reserved_sum end end def reserved_reservations @reserved_reservations ||= Reservation.find(:all, :conditions => ['canceled = ? AND sharedorder_id = ?', false, self.id ]) end end I have also tried :touch => true on the reservation model to update the sharedorder put for some reason it doesn't seem to include the latest reservation being added or being updated. So what I'm trying to do is update the status of the sharedorder if a certain percent is reached and I have to send the additional amounts the the sharedorder for it to know to include additional reservations or updates on existing ones. How should I do this?

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  • Read from params[] in Rails

    - by Adnan
    Hi, I use: <%= select( "payment", "id", { "Visa" => "1", "Mastercard" => "2"}) %> and I get this in HTML <select id="payment_id" name="payment[id]"><option value="2">Mastercard</option> <option value="1">Visa</option></select> now how can I read the payment[id] with params[], if I use params[payment[id]] I get an error.

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  • Working with nested models in ROR

    - by user487429
    Hi there, I'm trying to create an application where users can freely create shops and associated shop item for a specific shop is displayed when a show action is called but I seem to be doing something wrong. Any help here will be appreciated. I have attached shots of my code below. class ShopItem < ActiveRecord::Base belongs_to :shop def self.find_shop_items_for_sale find(:all, :order => "title", :conditions => ["shop_id = ?", @shop.id]) end end class Shop < ActiveRecord::Base has_many :shop_items end #Controllers class ShopsController < ApplicationController def new @shop = Shop.new end def create @shop = Shop.new(params[:shop]) @shop.user_id = current_user.id respond_to do |format| if @shop.save flash[:notice] = "Successfully created shop." format.html {redirect_to(all_shops_shops_url)} format.xml {render :xml => @shop, :status => :created, :location => @shop } else format.html {render :action => 'new'} format.xml { render :xml => @shop.errors, :status => :unprocessable_entity } end end end def show @shop = Shop.find(params[:id]) @shop_items = ShopItem.find_shop_items_for_sale @shop_cart = find_shop_cart end class ShopItemsController < ApplicationController def user @per_page ||= 5 @user = User.find(params[:id]) @shop_items = ShopItem.find(:all, :conditions=>["user_id = ?", @user.id], :order=>"id desc") end def show @shop_item = ShopItem.find(params[:id]) @shop = @shop_item.shop respond_to do |format| format.html # show.html.erb format.xml { render :xml => @shop_item } end end # GET /shop_items/new # GET /shop_items/new.xml def new @shop_item = ShopItem.new @shop = Shop.find(params[:id]) #@shop_items = ShopItem.paginate(:all, :condition=>["shop_id] = ?", @shop.id], :order=> "id desc", :page => params[:page],:per_page => @per_page) @shop_items = ShopItem.find(:all, :conditions=>["shop_id = ?", @shop.id], :order=> "id desc") @shop_item.shop_id = params[:id] respond_to do |format| format.html # new.html.erb format.xml { render :xml => @shop_item } end end # GET /shop_items/1/edit def edit @shop_item = ShopItem.find(params[:id]) end # POST /shop_items # POST /shop_items.xml def create @shop_item = ShopItem.new(params[:shop_item]) @shop_item.user_id = current_user.id respond_to do |format| if @shop_item.save flash[:notice] = 'Shop item was successfully created.' format.html { redirect_to(@shop_item) } format.xml { render :xml => @shop_item, :status => :created, :location => @shop_item } else @shop = Shop.find(@shop_item.shop_id) #@shop_items = ShopItem.paginate(:all, :condition =>["shop_id = ?", @shop.id], :order=> "id desc" , :page => params[:page], :per_page => @per_page) @shop_items = ShopItem.find(:all, :conditions =>["shop_id = ?", @shop.id], :order=> "id desc") format.html { render :action => "new" } format.xml { render :xml => @shop_item.errors, :status => :unprocessable_entity } end end end

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  • catching the value of a time_select in rails.

    - by ZeroSoul13
    Hello, I have a form that has two field (time_selects), the idea is that the user can select the beginning of a call and end time of the call. I've setup a observe field and works fine: <%= observe_field "llamada_inicio_4i", :update => "total", :with => "llamada_inicio_4i", :url => { :controller => "llamadas", :action => "time_tracker"}%> Sends the value out: Processing LlamadasController#time_tracker (for 127.0.0.1 at 2010-04-22 17:48:41) [POST] Parameters:"llamada_inicio_4i"="23",authenticity_token"="+D+yPSVue6yQNfPMuVLkrJn7B9tP6z5S1icKpPFTiso="} Rendering template within layouts/llamadas Rendering llamadas/time_tracker Completed in 5ms (View: 3, DB: 0) | 200 OK [http://0.0.0.0/llamadas /time_tracker] How can i catch this value Parameters:"llamada_inicio_4i"="23"

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  • add_without_safety create new DB entry in controller

    - by Karl Entwistle
    Im trying to get a controller to create a new account with the user id filled in, this doesn't work in my controller or in the console, why? Any suggestions on how to implement this would be much appreciated. class PaymentNotification < ActiveRecord::Base after_create :add_account_to_market private def add_account_to_market if status == "Completed" line = LineItem.find(:first, :conditions => { :cart_id => cart.id }) line.quantity.times do Account.new(:user_id => cart.user_id) end end end end

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  • Rails Functional Test Failing Due to Association

    - by Koby
    I have an accounts model that holds some basic account info (account name, website, etc). I then have a user model that has the following in the app/models/user.rb belongs_to :account I also have the following in my routes.rb map.resources :account, :has_many => [:users, :othermodel] the problem I'm facing is that the following test is failing: test "should create user" do assert_difference('User.count') do post :create, :user => { } #this is the line it's actually failing on end assert_redirected_to user_path(assigns(:user)) #it doesn't get here yet end The error it gives is "Can't find Account without ID" so I kind of understand WHY it's failing, because of the fact that it doesn't have the account object (or account_id as it were) to know under what account to create the user. I have tried variations of the following but I am completely lost: post :create, :user => { accounts(:one) } #I have the 'fixtures :accounts' syntax at the top of the test class post :create, [accounts(:one), :user] => { } post :create, :user => { accounts(:one), #other params for :user } and like I said, just about every variation I could think of. I can't find much documentation on doing this and this might be why people have moved to Factories for doing test data, but I want to understand things that come standard in Rails before moving onto other things. Can anyone help me get this working?

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  • How do I use File.new to find a file from Rails?

    - by Angela
    I am trying to read a file that has been saved on the /system folder using Paperclip, for example. But when I use that .url method from Paperclip to read that file using File.new, I get that the file isn't found. The directory is correct, but I still can't access it. What is the right way to find a file for File.new for example? I tried to point to other files, as well, and to no avail.

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  • What can be inside a class that derive from OmniAuth?

    - by Richard77
    I have the following class class Identity < OmniAuth:: Identity:: Models:: ActiveRecord attr_accessible :email, :name, :password_digest, :password, :password_confirmation end I wonder if the above properties are the only ones allowed for a class that derive from a OmniAuth. I wish I could add some more like FirstName, LastName, age, gender, and so on. Do I need to create an other model for those properties or can I just add them to the Identity model? Thanks for helping.

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  • Agile web development with Rails 4 interface difficulties

    - by Luke Annison
    I've been following along with the examples in the book in making a online catalog and am having a couple of discouraging difficulties in Chapter 8 task C: Catalog display. I have input the code for the stylesheets as instructed but it has created a slightly skewed result as compared to what is shown in the book. Whilst minor and aesthetic in nature its a little shock to my confidence and slightly irritating when trying to carry on through the book. I have too little rep to post a pic, but heres the link: http://s11.postimage.org/3pwlzfiwj/Screen_Shot_2012_10_08_at_22_29_56.png) As you can see the boarder seems a little confused and the image at the top is covering the header text. I've been through the code time and time again but can't seem find out where I've gone wrong. Could anybody give me some clues?

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  • Hpricot: Stop auto fixing HTML

    - by Imran
    Consider the following example (sample data): doc = Hpricot("<a><table><tr><td>LOREM IPSUM</td></tr></table></a>") it converts it to <a></a><table><tr><td>LOREM IPSUM</td></tr></table> What it actually do is, pull out the table from <a> tag. I think Hpricot tries to repair the HTML. How can I stop Hpricot doing this?

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  • Undefined method 'total_entries' after upgrading Rails 2.2.2 to 2.3.5

    - by Trevor
    I am upgrading a Rails application from 2.2.2 to 2.3.5. The only remaining error is when I invoke total_entries for creating a jqgrid. Error: NoMethodError (undefined method `total_entries' for #<Array:0xbbe9ab0>) Code snippet: @route = Route.find( :all, :conditions => "id in (#{params[:id]})" ) { if params[:page].present? then paginate :page => params[:page], :per_page => params[:rows] order_by "#{params[:sidx]} #{params[:sord]}" end } respond_to do |format| format.html # show.html.erb format.xml { render :xml => @route } format.json { render :json => @route } format.jgrid { render :json => @route.to_jqgrid_json( [ :id, :name ], params[:page], params[:rows], @route.total_entries ) } end Any ideas? Thanks!

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  • How to disable activerecord cache logging in rails

    - by user1508459
    I'm trying to disable logging of caching in production. Have succeeded in getting SQL to stop logging queries, but no luck with caching log entries. Example line in production log: CACHE (0.0ms) SELECT merchants.* FROM merchants WHERE merchants.id = 1 LIMIT 1 I do not want to disable all logging, since I want logger.debug statements to show up in the production log. Using rails 3.2.1 with Mysql and Apache. Any suggestions?

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  • Handling JSON and HTML templates in jQuery

    - by Toby Hede
    I have an ajax-enabled site that presents a lot of dynamic content by interpolating JSON values with HTML. This all works fine. BUT it means I have significant amounts of HTML all through my JavaScript. For example: var template = "<div>Foo: {bar}</div><div>Blah: {vtha}</div>"; template.interpolate({bar:"bar",blah:"vtha"}); I have cut this down a fair bit - some of my dynamic elements have quite a lot of HTML and a lot going on. I am using jQuery and I am building on Rails, so if there is something smart in either framework, that would be great. For reference, the String interpolation function used above is: String.prototype.interpolate = function (o) { return this.replace(/{([^{}]*)}/g, function (a, b) { var r = o[b]; return typeof r === 'string' || typeof r === 'number' ? r : a; } ); };

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  • Assign weight to a integer column for Sphinx search

    - by Daniel
    Hello: I have a note table with columns: title :string content :text rating :integer and a thinking_sphinx configuration: define_index do indexes :title, :sortable => true indexes :content end Then I can search the notes and assign weights to title and content to define the order or the result: Note.search "abc", :match_mode => :extended, :field_weights => { :title => 10, :content => 3 } Now I want to assign a weight to the rating column The type of the rating column is integer. The range of the rating is [1, 2, 3, 4, 5]. Can I just add weight at the :field_weights :field_weights => { :title => 10, :content => 3, :rating => 5 } or I need to do something else to make the note which has higer rating display first?

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  • please recommend a rails based CMS

    - by paul
    Hello, I am searching for a rails-based CMS that provide rich text editing feature (e.g. I need an interface very similar to that of Wordpress where you can easily style up your static pages and upload pictures without knowing any css or html) AND easy to be dropped into an existing rails application. Camtose, RadiantCMS and few other ones did not seem to offer the rich interface I was looking for. RefineryCMS had conflict with my existing user authentication and I did not really find a solution to it. I am just wondering if there are any rails based cms that can meet my needs. Please advise if you know of any such rails-based CMS. Thank you for your help!

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  • class method as hash value

    - by demas
    I have this working code: class Server def handle(&block) @block = block end def do @block.call end end class Client def initialize @server = Server.new @server.handle { action } end def action puts "some" end def call_server @server.do end end client = Client.new client.call_server My Server will handle more then one action so I want to change code such way: class Server def handle(options) @block = options[:on_filter] end def do @block.call end end class Client def initialize @server = Server.new my_hash = { :on_filter => action } @server.handle(my_hash) end def action puts "some" end def call_server @server.do end end client = Client.new client.call_server It is incorrect code because action() method calls on create my_hash, but if I try to modify code to: my_hash = { :on_filter => { action } } i get error message. Is it possible to create hash with methods as hash values ?

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  • Authlogic's current_user object in models

    - by jriff
    Hi all! I need to know the ID of the current user in a model: def after_save desc, points=nil, nil if answer_index == daily_question.correct_answer_index desc = I18n.t('daily_question.point_log.description.correct') points=daily_question.points else desc = I18n.t('daily_question.point_log.description.incorrect') end current_user.give_points(:description => desc, :points => points ) end But I guess that is not how it is done? Regards, Jacob

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  • Avoiding duplication in setting properties on the task in Rake tasks

    - by Stray
    I have a bunch of rake building tasks. They each have unique input / output properties, but the majority of the properties I set on the tasks are the same each time. Currently I'm doing that via simple repetition like this: task :buildThisModule => "bin/modules/thisModule.swf" mxmlc "bin/modules/thisModule.swf" do |t| t.input = "src/project/modules/ThisModule.as" t.prop1 = value1 t.prop2 = value2 ... (And many more property=value sets that are the same in each task) end task :buildThatModule => "bin/modules/thatModule.swf" mxmlc "bin/modules/thatModule.swf" do |t| t.input = "src/project/modules/ThatModule.as" t.prop1 = value1 t.prop2 = value2 ... (And many more property=value sets that are the same in each task) end In my usual programming headspace I'd expect to be able to break out the population of the recurring task properties to a re-usable function. Is there a rake analogy for this? Some way I can have a single function where the shared properties are set on any task? Something equivalent to: task :buildThisModule => "bin/modules/thisModule.swf" mxmlc "bin/modules/thisModule.swf" do |t| addCommonTaskParameters(t) t.input = "src/project/modules/ThisModule.as" end task :buildThatModule => "bin/modules/thatModule.swf" mxmlc "bin/modules/thatModule.swf" do |t| addCommonTaskParameters(t) t.input = "src/project/modules/ThatModule.as" end Thanks.

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  • One Account with many users authentication in rails

    - by Cristian
    Which approach would you recommend to the following issue: My app needs to have an account with several users inputting tasks on the same account. Only one of the users (the one that opened the account) will have admin privileges. Im thinking on using Authlogic for authentication and CanCan for determining user privileges. The point is that I'd like the User that opened the Account to be admin by default being him the only one to be able to generate other Users for his account with a different privileges. Thanks, CD

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