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  • Parsing a CSV File to a Rails Database

    - by Schroedinger
    G'day guys, I'm using fasterCSV and a rake script to parse a csv with about 30 columns into my rails db for a 'Trade' item. The script works fine when all of the values are set to strings, but when I change it to a decimal, int or other value, everything goes to hell. Wondering if fasterCSV has built in int etc parsing or whether I'll have to manage these within my model. Basically, I'm given a giant amount of trades data, need to import it, and then need to provide feedback with say the average trade volume, the times, etc. I understand I can do that all with the wonderful records provided to me by activeRecord but wondered if there was an easier way to populate a rather large Database with a given CSV? Several of the fields don't have values for certain rows, fasterCSV seems to work perfectly when they're all strings, but not when I try to get decimal or other.

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  • What exactly is Arel in Rails 3.0?

    - by Will
    I understand that it is a replacement for ActiveRecord and that it uses objects instead of queries. But... why is this better? will objects/queries be "easier" to create? will it lead to more efficient SQL queries? will it be compatible with all major DB's? - I assume it will. will it be easier/harder to use with stored procedures?

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  • work with rescue in Rails

    - by Adnan
    Hi, I am working with the following piece; def index @user = User.find(params[:id]) rescue flash[:notice] = "ERROR" redirect_to(:action => 'index') else flash[:notice] = "OK" redirect_to(:action => 'index') end Now I either case whether I have a correct ID or not, I am always getting "OK" in my view, what am I doing wrong? I need that when I have no ID in the DB to show "ERROR". I have also tried to use rescue ActiveRecord::RecordNotFound but same happens. All help is appreciated.

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  • How does Rails find models and controllers? How can I get it to load more models?

    - by David
    I'm trying to create a non-ActiveRecord model in app/models/gamestate.rb. Then inside my controller (PlayController) I should be able to do GameState.new, right? No go: NameError (uninitialized constant PlayController::GameState): app/controllers/play_controller.rb:23:in `play' (at least in the development environment) But! If I do have a model called app/models/play.rb, then it's automatically loaded and I can do Play.new. So my question is: how does Rails know which classes to load? What sort of name mangling does it do to get from play#action to PlayController to app/controllers/play_controller.rb to app/models/play.rb? It seems awfully fragile, but maybe a better understanding of how this works would help. And finally, how can I get it to load app/models/gamestate.rb?

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  • Concatenate arrays items

    - by j.
    I have two arrays: x = [ [0, "#0"], [1, "#1"] ] y = [ [00, "00 description"], [10, "10 description"] ] What i need is to merge them so i get the following as result: result = [ [000, "#0 00 description"], [010, "#0 10 description"], [100, "#1 00 description"], [110, "#1 10 description"]] Is there a method for that? Or I'll need to use collect or something like this? Thanks in advance.

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  • rails validation of presence not failing on nil

    - by holden
    I want to make sure an attibute exists, but it seems to still slip thru and I'm not sure how better to check for it. This should work, but doesn't. It's a attr_accessor and not a real attribute if that makes a difference. validates_presence_of :confirmed, :rooms {"commit"=>"Make Booking", "place_id"=>"the-kosmonaut", "authenticity_token"=>"Tkd9bfGqYFfYUv0n/Kqp6psXHjLU7CmX+D4UnCWMiMk=", "utf8"=>"✓", "booking"=>{"place_id"=>"6933", "bookdate"=>"2010-11-22", "rooms"=>[{}], "no_days"=>"2"}} Not sure why my form_for returns a blank hash in an array... <% form_for :booking, :url => place_bookings_path(@place) do |f| %> <%= f.hidden_field :bookdate, { :value => user_cart.getDate } %> <%= f.hidden_field :no_days, { :value => user_cart.getDays } %> <% for room in pricing_table(@place.rooms,@valid_dates) %> <%= select_tag("booking[rooms][][#{room.id}]", available_beds(room)) %> <% end %> <% end %>

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  • Changing the id parameter in Rails routing

    - by japancheese
    Hello, Using rails3 new routing system, is it possible to change the default :id parameter resources :users, :key => :username come out with the following routes /users/new /users/:username /users/:username/edit ...etc I'm asking because although the above example is simple, it would be really helpful to do in a current project I'm working on. Is it possible to change this parameter, and if not, is there a particular reason as to why not?

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  • How Do I Prevent Rails From Treating Edit Fields_For Differently From New Fields_For

    - by James
    I am using rails3 beta3 and couchdb via couchrest. I am not using active record. I want to add multiple "Sections" to a "Guide" and add and remove sections dynamically via a little javascript. I have looked at all the screencasts by Ryan Bates and they have helped immensely. The only difference is that I want to save all the sections as an array of sections instead of individual sections. Basically like this: "sections" => [{"title" => "Foo1", "content" => "Bar1"}, {"title" => "Foo2", "content" => "Bar2"}] So, basically I need the params hash to look like that when the form is submitted. When I create my form I am doing the following: <%= form_for @guide, :url => { :action => "create" } do |f| %> <%= render :partial => 'section', :collection => @guide.sections %> <%= f.submit "Save" %> <% end %> And my section partial looks like this: <%= fields_for "sections[]", section do |guide_section_form| %> <%= guide_section_form.text_field :section_title %> <%= guide_section_form.text_area :content, :rows => 3 %> <% end %> Ok, so when I create the guide with sections, it is working perfectly as I would like. The params hash is giving me a sections array just like I would want. The problem comes when I want edit guide/sections and save them again because rails is inserting the id of the guide in the id and name of each form field, which is screwing up the params hash on form submission. Just to be clear, here is the raw form output for a new resource: <input type="text" size="30" name="sections[][section_title]" id="sections__section_title"> <textarea rows="3" name="sections[][content]" id="sections__content" cols="40"></textarea> And here is what it looks like when editing an existing resource: <input type="text" value="Foo1" size="30" name="sections[cd2f2759895b5ae6cb7946def0b321f1][section_title]" id="sections_cd2f2759895b5ae6cb7946def0b321f1_section_title"> <textarea rows="3" name="sections[cd2f2759895b5ae6cb7946def0b321f1][content]" id="sections_cd2f2759895b5ae6cb7946def0b321f1_content" cols="40">Bar1</textarea> How do I force rails to always use the new resource behavior and not automatically add the id to the name and value. Do I have to create a custom form builder? Is there some other trick I can do to prevent rails from putting the id of the guide in there? I have tried a bunch of stuff and nothing is working. Thanks in advance!

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  • Rails ActiveRecord: Find All Users Except Current User

    - by SingleShot
    I feel this should be very simple but my brain is short-circuiting on it. If I have an object representing the current user, and want to query for all users except the current user, how can I do this, taking into account that the current user can sometimes be nil? This is what I am doing right now: def index @users = User.all @users.delete current_user end What I don't like is that I am doing post-processing on the query result. Besides feeling a little wrong, I don't think this will work nicely if I convert the query over to be run with will_paginate. Any suggestions for how to do this with a query? Thanks.

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  • Acts as Tree with Multiple Models

    - by Joe
    I've got several models that I'd like to relate together hierarchically. For simplicity's sake, let's say I've got these three: class Group < ActiveRecord::Base acts_as_tree has_many :users end class User < ActiveRecord::Base acts_as_tree belongs_to :group has_many :posts end class Post < ActiveRecord::Base acts_as_tree belongs_to :user end Under the current acts_as_tree, each node can individually can relate hierarchically to other nodes provided they are of the same type. What I'd like is to remove this restriction on type identity, so that SomePost.parent could have a User or a Post as its' parent, and that SomeUser.parent could have another user or a group as its parent. Any thoughts?

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  • Remove unncessary error raised by paperclip - filename is not recognized by the 'identify' command.

    - by kgpdeveloper
    I've been searching on how to solve this issue but could not find any real and working solution. User model: validates_attachment_content_type :avatar, :content_type = ['image/jpeg', 'image/pjpeg', 'image/x-png', 'image/png', 'image/gif'] Unnecessary error shows up when invalid file type is uploaded: Avatar /tmp/sample,23283,0.txt is not recognized by the 'identify' command. Server details: Ubuntu and Debian which identify results to /usr/bin/identify Specifying command path does not solve the issue: Paperclip.options[:command_path] = "/usr/bin" Any ideas? I looked at geometry.rb file and there seems to be something wrong with it. def self.from_file file file = file.path if file.respond_to? "path" geometry = begin Paperclip.run("identify", %Q[-format "%wx%h" "#{file}"[0]]) rescue PaperclipCommandLineError "" end parse(geometry) || raise(NotIdentifiedByImageMagickError.new("#{file} is not recognized by the 'identify' command.")) end Let me know if anyone has solved the same issue and how. Many thanks.

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  • Rails Tableless Model

    - by mplacona
    I'm creating a tableless Rails model, and am a bit stuck on how I should use it. Basically I'm trying to create a little application using Feedzirra that scans a RSS feed every X seconds, and then sends me an email with only the updates. I'm actually trying to use it as an activerecord model, and although I can get it to work, it doesn't seem to "hold" data as expected. As an example, I have an initializer method that parses the feed for the first time. On the next requests, I would like to simply call the get_updates method, which according to feedzirra, is the existing object (created during the initialize) that gets updated with only the differences. I'm finding it really hard to understand how this all works, as the object created on the initialize method doesn't seem to persist across all the methods on the model. My code looks something like: def initialize feed parse here end def get_updates feedzirra update passing the feed object here end Not sure if this is the right way of doing it, but it all seems a bit confusing and not very clear. I could be over or under-doing here, but I'd like your opinion about this approach. Thanks in advance

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  • Rails + Dragonfly gem: Saving image in a directory structure based on ActiveRecord object attributes

    - by Allen Bargi
    I'm using dragonfly gem to manage images and attachments in my rails app and I need to store images in a specific directory structure based on my user model. let' say I have user model which has a name and each user has many albums, which have a name also, then I want the images to be stored in "#{RAILS_ROOT}/public/system/#{user.name}/#{user.album.name}/#{suffix}" I've managed to changed the root_path in dragon fly and I even overrided relative_storage_path like this: class MyDataStore < Dragonfly::DataStorage::FileDataStore private def relative_storage_path(suffix) "#{suffix}" end end but still, I don't know how I can pass the ActiveRecord object attributes like user.name and user.album.name to relative_storage_path to create my ideal path. do you have any idea how I can do such a thing?

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  • Problems installing RMagick with Paperclip in Rails 3

    - by Smickie
    Hi, I'm trying to use paperclip in rails and when I'm doing the "bundle install" I'm getting the following error: Can't install RMagick 2.13.1. Can't find Magick-config in /usr/local/mysql/bin:/usr/local/bin:/usr/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/git/bin:/usr/X11/bin:/Users/seanhinton/.rvm/bin What I'm wondering is how do I install RMagick (is that what I need?) on my machine (it's OSX 10.6)? Cheers!

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  • functional test for rails controller privaet method

    - by mohit
    I have a private method in my controller. which is used for some database update. this method i am calling from another controller method. and it works fine. But when i am trying to write a test case for that method then It is tripping on accessing (session variable and params) in my functional all other methods are working fine the problem is only with private method? In my setup method in functional test, I am setting session also.?

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  • What's the fastest way to check if a word from one string is in another string?

    - by Mike Trpcic
    I have a string of words; let's call them bad: bad = "foo bar baz" I can keep this string as a whitespace separated string, or as a list: bad = bad.split(" "); If I have another string, like so: str = "This is my first foo string" What's the fasted way to check if any word from the bad string is within my comparison string, and what's the fastest way to remove said word if it's found? #Find if a word is there bad.split(" ").each do |word| found = str.include?(word) end #Remove the word bad.split(" ").each do |word| str.gsub!(/#{word}/, "") end

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  • Git + GitHub + Heroku

    - by Haseeb Khan
    Hi All, I am new to the world of Git, GitHub and Heroku. So far, I am enjoying this paradigm but coming from a background with SVN, things seems a bit complicated to me in the world of Git. I am facing a problem for which I am looking for a solution. Scenario: I have setup a new private project on GitHub. I forked the private project and now I have the following structure in my branch: /project /apps /my-apps /my-app-1 .... /my-app-2 .... /your-apps /your-app-1 .... /your-app-2 .... /plugins .... I can commit the code in my Fork on GitHub from my machine in any of the folders I want. Later on, these would be pulled into the master repository by the admin of the project. For every individual application in the apps folder, I have setup an app on Heroku which is a Git Repo in itself where I push my changes when I am done with the user stories from my local machine. In short, every app in the apps folder is a Rails App hosted on Heroku. Problem: What I want is that when I push my changes into Heroku, they can be committed into my project fork on GitHub as well, so, it also has the latest code all the time. The issue I see is that the code on Heroku is a Git Repo while the folders which I have on GitHub are part of a Repo. So far, what I have researched is that there is something known as Submodule in the Git World which can come to the rescue, however, I have not been able to find some newbie instructions. Can someone in the community be kind enough to share thoughts and help me to identify the solution of this problem? Thanks in advance. Regards, Haseeb Khan haseeb [AT] tkxel.com TkXel

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  • How to create custom omniauth provider (how to return data)

    - by user2803917
    I searched all around the net, how to create a custom provider for omniauth.. and i succedded partly.. I created a gem, and it worked perfectly, except the part, that i cant understand how to return the gathered data to sessions controller, like other providers do.. here is the code in auth gem: require 'multi_json' require 'digest/md5' require 'rest-client' module OmniAuth module Strategies class Providername < OmniAuth::Strategies::OAuth attr_accessor :app_id, :api_key, :auth def initialize(app, app_id = nil, api_key = nil, options = {}) super(app, :providername) @app_id = app_id @api_key = api_key end protected def request_phase redirect "http://valid_url" end def callback_phase if request.params['code'] && request.params['status'] == 'ok' response = RestClient.get("http://valid_url2/?code=#{request.params['auth_code']}") auth = MultiJson.decode(response.to_s) unless auth['error'] @auth_data = auth if @auth_data @return_data = OmniAuth::Utils.deep_merge(super, { 'uid' => @auth_data['uid'], 'nickname' => @auth_data['nick'], 'user_info' => { 'first_name' => @auth_data['name'], 'last_name' => @auth_data['surname'], 'location' => @auth_data['place'], }, 'credentials' => { 'apikey' => @auth_data['apikey'] }, 'extra' => {'user_hash' => @auth_data} }) end end else fail!(:invalid_request) end rescue Exception => e fail!(:invalid_response, e) end end end end and here i call it in my initializers: Rails.application.config.middleware.use OmniAuth::Builder do provider "providername", Settings.providers.providername.app_id, Settings.providers.providername.app_secret end in this code, everything works fine so far, the provider gets called, i get the info from provider, i create a hash (@auth_data) with info, but how do i return it

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  • adding custom fields dynamically to a model

    - by pankajbhageria
    I have a model called List which has many records: class List has_many :records end class Record end The table Record has 2 permanent fields: name, email. Besides these 2 fields, for each List a Record can have 'n' custom fields. For example: for list1 I add address(text), dob(date) as custom fields. Then while adding records to list one, each record can have values for address and dob. Is there any ActiveRecord plugin which provides this type of functionality? Or else could you share your thoughts on how to model this? Thanks in advance, Pankaj

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  • Dynamically defined setter methods using define_method?

    - by nicosuria
    I use a lot of iterations to define convenience methods in my models, stuff like: PET_NAMES.each do |pn| define_method(pn) do ... ... end but I've never been able to dynamically define setter methods, ie: def pet_name=(name) ... end using define_method like so: define_method("pet_name=(name)") do ... end Any ideas? Thanks in advance.

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  • CSRF protection and cross site form access

    - by fl00r
    Hi. I aw working on cross site authentication (some domains have got common authentication). So I want to send authentication data (login, password) to main domain from others. How should I use protect_from_forgery and how can I check if data received from valid domain? What I am thinking now is to turn off protect_from_forgery for session controller and check domain name of received data. But maybe I can configure CSRF protection for not only one domain?

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  • formtastic weird month name display

    - by Alexey Poimtsev
    Hi, i'm using formtastic, all is ok, but strange thing - on = form.input :birthdate, :as => :date it renders to something like <li><label for="profile_birthdate_2i">Month</label><select id="profile_birthdate_2i" name="profile[birthdate(2i)]"> <option value="1">114</option> <option value="2">97</option> <option value="3">110</option> <option value="4">115</option> <option value="5">108</option> <option value="6">97</option> <option value="7">116</option> <option value="8">105</option> <option value="9">111</option> <option value="10">110</option> <option value="11">32</option> <option value="12">109</option> </select> but if i'm using in semantic_form something like = form.datetime_select :birthdate it renders correctly. I've found information, that it may be caused by locale file with no translations for month names, but its so strange - why rails helpers renders month names ok, but formtastic - not :( any ideas?

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