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  • how do i load a csv file in rails from a migrate usiing load data local infile ?

    - by Chris Drappier
    Hi All, I have my csv file in my public folder, and i'm trying to load it from a migration, but I get a file not found error using this script : ActiveRecord::Base.connection.execute( "load data local infile '#{RAILS_ROOT}/public/muds_variables.csv' into table muds_variables " + "fields terminated by ',' " + "lines terminated by '\n' " + "(variable_name, definition)") I've checked and re-checked the file path, and that's definitely where it lives, I've also tried it just using the file name without any of the path, and a few other combos, but I can't make it work :(. can anyone help me out with this? here's the error : Mysql::Error: File '/home/chris/rails_projects/muds/public/muds_variables.csv' not found (Errcode: 2): load data local infile '/home/chris/rails_projects/muds/public/muds_variables.csv' into table muds_variables fields terminated by ',' lines terminated by ' ' (variable_name, definition) -C

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  • RMagick installation failed in Ubuntu 9.04

    - by Marc Vitalis
    I already installed the following: imagemagick libmagickwand-dev but still i get this error. ====================================================================== Mon 05Oct09 19:36:06 This installation of RMagick 2.12.0 is configured for Ruby 1.8.7 (i486-linux) and ImageMagick 6.4.5 Q16 ====================================================================== make cc -I. -I. -I/usr/lib/ruby/1.8/i486-linux -I. -DRUBY_EXTCONF_H=\"extconf.h\" -I/usr/include/ImageMagick -fPIC -I/usr/include/ImageMagick -fopenmp -c rmmontage.c cc -I. -I. -I/usr/lib/ruby/1.8/i486-linux -I. -DRUBY_EXTCONF_H=\"extconf.h\" -I/usr/include/ImageMagick -fPIC -I/usr/include/ImageMagick -fopenmp -c rmutil.c cc -I. -I. -I/usr/lib/ruby/1.8/i486-linux -I. -DRUBY_EXTCONF_H=\"extconf.h\" -I/usr/include/ImageMagick -fPIC -I/usr/include/ImageMagick -fopenmp -c rmmain.c cc -I. -I. -I/usr/lib/ruby/1.8/i486-linux -I. -DRUBY_EXTCONF_H=\"extconf.h\" -I/usr/include/ImageMagick -fPIC -I/usr/include/ImageMagick -fopenmp -c rmimage.c rmimage.c: In function ‘Image_function_channel’: rmimage.c:5136: error: ‘MagickFunction’ undeclared (first use in this function) rmimage.c:5136: error: (Each undeclared identifier is reported only once rmimage.c:5136: error: for each function it appears in.) rmimage.c:5136: error: expected ‘;’ before ‘function’ rmimage.c:5152: error: ‘function’ undeclared (first use in this function) rmimage.c:5158: error: ‘PolynomialFunction’ undeclared (first use in this function) rmimage.c:5164: error: ‘SinusoidFunction’ undeclared (first use in this function) make: *** [rmimage.o] Error 1

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  • How to override a render to create a custom "render :my_format => argument" in rails 2.3(.5)?

    - by Rafael
    Hey! I would like to create a custom render as specified in title. For instance, I have my controller: class MyController < ApplicationController def index respond_to do |format| format.html # index.html.erb format.xml { render :xml => @objs } end end end , but I would like something like this: class MyController < ApplicationController def index respond_to do |format| format.html # index.html.erb format.xml { render :xml => @objs } format.my_format { render :my_format => @objs } end end end Is it possible? What are the steps I need to make it work? Thanks in advance! UPDATE I want something like in here. So I replaced the @objs with a method but it didn't work either (the method wasn't called). Obs: I register the mime type at config/initializers/mime_types.rb.

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  • How to make parameters optional when using Rails named routes?

    - by Jason
    I have a named route: map.find '/find/:category/:state/:search_term/:permalink', :search_term=>nil, :controller=>'find', :action=>'show_match' and the following URL matches it & works OK: http://localhost:3000/find/cars/ca/TestSeachTerm/bumpedupphoto-test but if I take out the 2nd last parameter i.e. "TestSearchTerm", then the route fails to get matched, even though I have :search_term=nil in the route. http://localhost:3000/find/cars/ca//bumpedupphoto-test Can anyone see what I am doing wrong? Being trying to solve this for a few days now. Thanks!

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  • How to show an animated spinner while a background task is processing in nested rails model using aj

    - by Globalkeith
    My specific example is highly complex, so I will use the example shown by Ryan from Railscasts to discuss this: http://railscasts.com/episodes/197-nested-model-form-part-2 Background I have a form, let's say "Survey", which contains an arbitrary number of "Questions". Senario Give i am on the "Edit Survey" page. I would like to add a button to each "Question" field which calls a remote_function, which in turn queue's up a delayed_job to execute some processing on the "Question". To give feedback to the user, i would like to disable the button, and show an animated spinner, which remains until the delayed_job has processed the "Question". Hint - I can add methods to the "Question" model to indicate the status of the delayed_job. So, with best practices in mind, what is the best way to achieve this?

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  • Could you help me write a proper query in rails for accessing the following information?

    - by aditi-syal
    @workname = [] @recos = [] @bas = [] if current_user.recommendations.size != 0 current_user.recommendations.each do |r| if r.work_type == 'J' @job = Job.find_by_id(r.work_id) @workname.push "#{@job.title} at #{@job.company.name}" else @qualification = Qualification.find_by_id(r.work_id) @workname.push "Student at #{@qualification.school_name}" end @recommender = User.find_by_id(r.recommender_id) if r.recommender_work_type == 'J' @job = Job.find_by_id(r.recommender_work_id) @recos.push "#{@recommender.first_name} #{@recommender.last_name}" @bas.push "#{r.basis.gsub("You","#{@job.title} at #{@job.company.name}")}" else @qualification = Qualification.find_by_id(r.recommender_work_id) @recos.push "#{@recommender.first_name} #{@recommender.last_name} as " @bas.push "#{r.basis.gsub("You","Student at #{@qualification.school_name}")}" end end end

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  • has_many, belongs_to and comment forms

    - by Koning Baard XIV
    I'm having two models: Snippet and SnippetComment. These also have their own controllers, as well as views. In /app/views/snippets/show.html.erb I have a form that starts like this: <% form_for(@new_snippet_comment) do |form| %> SnippetComment belongs to one Snippet, and a Snippet belongs to one User. This means that I have this routing: map.resources :users do |user| user.resources :snippets do |snippet| snippet.resources :snippet_comments, :as => "comments" end end So when I submit the SnippetComment form in the SnippetController#show view, this request should be made: POST /users/x/snippets/x/comments HTTP/1.1 (where x is the User's or Snippet's id). The problem is that I don't even get the comment submission form, but rahter this: NoMethodError in Snippets#show Showing app/views/snippets/show.html.erb where line #29 raised: undefined method `snippet_comments_path' for Extracted source (around line #29): 26: <% if current_user %> 27: <h2>Schrijf een nieuwe reactie</h2> 28: 29: <% form_for(@new_snippet_comment) do |form| %> 30: 31: <p> 32: <%= form.text_area :body %> RAILS_ROOT: /Users/jeffatwood/Dev/youjustdontneedmyrealname Application Trace | Framework Trace | Full Trace /Users/jeffatwood/.gem/ruby/1.8/gems/actionpack-2.3.5/lib/action_controller/polymorphic_routes.rb:107:in `__send__' /Users/jeffatwood/.gem/ruby/1.8/gems/actionpack-2.3.5/lib/action_controller/polymorphic_routes.rb:107:in `polymorphic_url' /Users/jeffatwood/.gem/ruby/1.8/gems/actionpack-2.3.5/lib/action_controller/polymorphic_routes.rb:114:in `polymorphic_path' /Users/jeffatwood/.gem/ruby/1.8/gems/actionpack-2.3.5/lib/action_view/helpers/form_helper.rb:298:in `apply_form_for_options!' /Users/jeffatwood/.gem/ruby/1.8/gems/actionpack-2.3.5/lib/action_view/helpers/form_helper.rb:277:in `form_for' /Users/jeffatwood/Dev/youjustdontneedmyrealname/app/views/snippets/show.html.erb:29:in `_run_erb_app47views47snippets47show46html46erb' /Users/jeffatwood/Dev/youjustdontneedmyrealname/app/controllers/snippets_controller.rb:19:in `show' Request Parameters: {"id"=>"1", "user_id"=>"2"} Show session dump Response Headers: {"Content-Type"=>"text/html", "Cache-Control"=>"no-cache"} Can anyone help me with this problem? Thanks

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  • What is best strategy to handle exceptions & errors in Rails?

    - by Nick Gorbikoff
    Hello. I was wondering if people would share their best practices / strategies on handling exceptions & errors. Now I'm not asking when to throw an exception ( it has been throroughly answered here: SO: When to throw and Exception) . And I'm not using this for my application flow - but there are legitimate exceptions that happen all the time. For example the most popular one would be ActiveRecordNotFound. What would be the best way to handle it? The DRY way? Right now I'm doing a lot of checking within my controller so if Post.find(5) returns Nil - I check for that and throw a flash message. However while this is very granular - it's a bit cumbersome in a sense that I need to check for exceptions like that in every controller, while most of them are essentially the same and have to do with record not found or related records not found - such as either Post.find(5) not found or if you are trying to display comments related to post that doesn't exist, that would throw an exception (something like Post.find(5).comments[0].created_at) I know you can do something like this in ApplicationController and overwrite it later in a particular controller/method to get more granular support, however would that be a proper way to do it? class ApplicationController < ActionController::Base rescue_from ActiveRecord::RecordInvalid do |exception| render :action => (exception.record.new_record? ? :new : :edit) end end

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  • Rails: Multiple "has_many through" for the two same models?

    - by neezer
    Can't wrap my head around this... class User < ActiveRecord::Base has_many :fantasies, :through => :fantasizings has_many :fantasizings, :dependent => :destroy end class Fantasy < ActiveRecord::Base has_many :users, :through => :fantasizings has_many :fantasizings, :dependent => :destroy end class Fantasizing < ActiveRecord::Base belongs_to :user belongs_to :fantasy end ... which works fine for my primary relationship, in that a User can have many Fantasies, and that a Fantasy can belong to many Users. However, I need to add another relationship for liking (as in, a User "likes" a Fantasy rather than "has" it... think of Facebook and how you can "like" a wall-post, even though it doesn't "belong" to you... in fact, the Facebook example is almost exactly what I'm aiming for). I gathered that I should make another association, but I'm kinda confused as to how I might use it, or if this is even the right approach. I started by adding the following: class Fantasy < ActiveRecord::Base ... has_many :users, :through => :approvals has_many :approvals, :dependent => :destroy end class User < ActiveRecord::Base ... has_many :fantasies, :through => :approvals has_many :approvals, :dependent => :destroy end class Approval < ActiveRecord::Base belongs_to :user belongs_to :fantasy end ... but how do I create the association through Approval rather than through Fantasizing? If someone could set me straight on this, I'd be much obliged!

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  • Rails: Object#id will be deprecated; use Object#object_id

    - by sscirrus
    Hi everyone, Very quick question. My server is warning me that line 37 will be deprecated, specifically: #Server error: views/projects/index.html.erb:37: warning: Object#id will be deprecated; use Object#object_id #Views/projects/index.html.erb: 6: <% for project in @projects do %> 36: <%= project.id %> 37: <%= Matching.find_all_by_customer_id_and_project_id( @customer.id, project.id).id %> 38: <%= @customer.id %> Here's my confusion. Line 36 project.id isn't raising a warning, so I assume the issue is that I'm calling ID on the Matching model. Why is it the case that only Matching raising an error and not customer or project? How can I rectify this in my code? Thanks very much.

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  • Rails - Logic for finding info from a :has_many :through needed!

    - by Jty.tan
    I have 3 relevant tables. User, Orders, and Viewables The idea is that each User has got many Orders, but at the same time, each User can View specific other Orders that belong to other Users. So Viewables has the attributes of user_id and order_id. Orders has a :has_many :Users, :through => :viewables Is it possible to do a find through an Order's view? So something like @viewable_orders = Orders.find(:all, :conditions = ["Viewable.user_id=?",1]) To get a list of Orders which are viewable by user_id=1. (This doesn't work, else I won't be asking. :( ) The idea being that I can do something like a sidebar where the current user (the logged-in one) can view a list of other people's orders that he can view. For example Three other Users who have some Orders that he can view should be eventually displayed like this: Jack (2) Basic Order (registry_id: 1) New Order (registry_id: 29) Amy (4) Short Order (registry_id: 12) Jill (5) Hardware Order (14) Pink Order (17) Software Order (76) (The number in brackets are the respective user_id or registry_id) So to find the list of all of the orders that the current user can find (assuming user_id of the current user is 1), would be found by doing @viewable_orders = Viewable.find(:all, :conditions => ["user_id=?", 1]) And that would give me the collection of the above 6 registries. Now, the easiest way to do this, is for me to just have a list of + Jill's Hardware Order + Jill's Pink Order + Amy's Short Order + etc But that gets ugly for long lists. Thanks!

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  • Rails routes question. Always find by name and remove /class_name/ from route

    - by Hock
    I have a Category model and a Product model. Category has_many products and Product belongs_to Category I want my routes to be like this: /:category_type/:category_name/ opens Product#index /:category_type/ opens Category#show / opens Category#index Is there a way to achieve that with resources? I tried with path_prefix but I just can't get it done. Any help? Thanks, Nicolás Hock Isaza

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  • How do I make an image_tag opaque with Rails?

    - by codeman73
    I have tried the following: <%= image_tag '...path_to_img', :filter => "alpha(opacity=50)" %> But it doesn't work. At least it doesn't create errors, but it doesn't make it opaque, either. I'm rusty on my html/css, and I think from what I've researched so far that the filter/alpha/opacity I tried above is actually css instead of html.

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  • Rails "Load more..." instead of pagination.

    - by Joseph Silvashy
    I have a list of elements, and I've been using will_paginate up until now, but I'd like to have something like "load more..." at the bottom of the list. Is there an easy way to accomplish this using will_paginate or do I need to resort to some other method here? From what I know this is a better route anyhow because then I don't need a SQL count of the records. And it really doesn't matter if there are like 9,847 pages, nobody would need the records beyond the first couple pages anyhow.

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  • Why ruby object has two to_s and inspect methods that do the same thing? Or, so it seems.

    - by prosseek
    The p calls inspect, and puts/print calls to_s for representing its object. If I run class Graph def initialize @nodeArray = Array.new @wireArray = Array.new end def to_s # called with print / puts "Graph : #{@nodeArray.size}" end def inspect # called with p "G" end end if __FILE__ == $0 gr = Graph.new p gr print gr puts gr end I get G Graph : 0Graph : 0 Then, why does ruby has two functions do the same thing? What makes the difference between to_s and inspect? And what's the difference between puts/print/p? If I comment out the to_s or inspect function, I get as follows. #<Graph:0x100124b88>#<Graph:0x100124b88>

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  • What would cause native gem extensions on OS X to build but fail to load?

    - by goodmike
    I am having trouble with some of my rubygems, in particular those that use native extensions. I am on a MacBookPro, with Snow Leopard. I have XCode 3.2.1 installed, with gcc 4.2.1. Ruby 1.8.6, because I'm lazy and a scaredy cat and don't want to upgrade yet. Ruby is running in 32-bit mode. I built this ruby from scratch when my MBP ran OSX 10.4. When I require one of the affected gems in irb, I get a Load Error for the gem extension's bundle file. For example, here's nokogigi dissing me: > require 'rubygems' = true > require 'nokogiri' LoadError: Failed to load /usr/local/lib/ruby/gems/1.8/gems/nokogiri-1.4.1/lib/nokogiri/nokogiri.bundle This is also happening with the Postgres pg and MongoDB mongo gems. My first thought was that the extensions must not be building right. But gem install wasn't throwing any errors. So I reinstalled with the verbose flag, hoping to see some helpful warnings. I've put the output in a Pastie, and the only warning I see is a consistent one about "passing argument n of ‘foo’ with different width due to prototype." I suspect that this might be an issue from upgrading to Snow Leopard, but I'm a little surprised to experience it now, since I've updated my XCode. Could it stem from running Ruby in 1.8.6? I'm embarrassed that I don't know quite enough about my Mac and OSX to know where to look next, so any guidance, even just a pointer to some document I couldn't find via Google, would be most welcome. Michael

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  • Bad interpreter: No such file or directory

    - by user1497462
    I'm working through Michael Hartl's tutorial trying to learn Rails for the first time, and I've run into some issues. I recently reinstalled the whole Rails Installer because I had apparently inadvertently deleted some important files. Now, when I try running a test I get the following error: sh.exe": /c/Program Files (x86)/ruby-1.9.3/bin/bundle: "c:/Program: bad interpre ter: No such file or directory I checked my PATH and attempted to use the solution outlined here: Bundle command not found. Bad Interpreter ..but putting quotation marks around "C:\Program Files (x86)\ruby-1.9.3\bin" didn't do anything for me. I ran $ rails -v and got the following output: $ rails -v ?[31mCould not find multi_json-1.3.6 in any of the sources?[0m ?[33mRun `bundle install` to install missing gems.?[0m So then I tried running $bundle install and got the following issue again: Tom@TOM-PC /c/sample_app (updating-users) $ bundle install sh.exe": /c/Program Files (x86)/ruby-1.9.3/bin/bundle: "c:/Program: bad interpre ter: No such file or directory I'd really appreciate any help -- I've spent 5+ hours today trying to get back on track and am still at a loss. Thanks!

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  • Rails How to get all the grandchildren of an ojbect.

    - by adam
    I have 3 models User has_many :quetions has_many :corrections end Question has_one :correction belongs_to :user end Correction belongs_to :user belongs_to :question So if user Bob asks a question then user Terry can check it and if its wrong offer a correction. Lets stay with bob and assume he as kindly corrected 5 other users, i.e and lets assume he has been lucky to get 3 corrections from other users. I want to be able to do something like this @bob.corrections_offered = 5 correction objects @bob.corrections_received = 3 correction objects the first one is easy as its really just @bob.corrections under the hood. But i dont know how to implement the latter one. Can anyone help?

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  • Rails: Polymorphic User Table a good idea with AuthLogic?

    - by sscirrus
    Hi everyone, I have a system where I need to login three user types: customers, companies, and vendors from one login form on the home page. I have created one User table that works according to AuthLogic's example app at http://github.com/binarylogic/authlogic_example. I have added a field called "User Type" that currently contains either 'Customer', 'Company', or 'Vendor'. Note: each user type contains many disparate fields so I'm not sure if Single Table Inheritance is the best way to go (would welcome corrections if this conclusion is invalid). Is this a polymorphic association where each of the three types is 'tagged' with a User record? How should my models look so I have the right relationships between my User table and my user types Customer, Company, Vendor? Thanks very much!

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  • Getting CoreMIDI to work in snow leopard with SimpleSynth

    - by suman-gurung
    I have been trying to follow the steps in the book Ruby Practical Project - making music with ruby and was trying to get CoreMIDI and output some notes using SimpleSynth. I can connect to the destination but when i do something like midi = LiveMIDI.new midi.note_on(0, 60, 100) I get no output from the sound system. Has anyone tried the code and faced similar situation?? And also What are the better libraries for music programming in Ruby?

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  • rubyCAS-client serviceValidation uri questions.

    - by ted-gehling
    php code works with this url but the rubyCAS-Client gem's `validate_service_ticket()' seems to call an SSL Validation on this url which returns an error message. 'OpenSSL::SSL::SSLError in CassersController#index' ||'SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed' ---enviroment.rb--- require 'casclient' require 'casclient/frameworks/rails/filter' CASClient::Frameworks::Rails::Filter.configure( :cas_base_url => "https://auth.foo.com", :validate_url => "https://auth.foo.com/serviceValidate" ) ---casser_controller.rb--- class CassersController < ApplicationController require 'casclient' require 'casclient/frameworks/rails/filter' before_filter CASClient::Frameworks::Rails::Filter def index @username = session[:cas_user] end end Possibly just another requirement I need to make or a config file that needs changed, but any help about this error would be appreciated.

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  • How to build a JSON response by combining @foo.to_json(options) and @bars.to_json(options) in Rails

    - by smotchkkiss
    First, the desired result I have User and Item models. I'd like to build a JSON response that looks like this: { "user": {"username":"Bob!","foo":"whatever","bar":"hello!"}, "items": [ {"id":1, "name":"one", "zim":"planet", "gir":"earth"}, {"id":2, "name":"two", "zim":"planet", "gir":"mars"} ] } However, my User and Item model have more attributes than just those. I found a way to get this to work, but beware, it's not pretty... Please help... My hacks home_controller.rb class HomeController < ApplicationController def observe respond_to do |format| format.js { render :json => Observation.new(current_user, @items).to_json } end end end observation.rb # NOTE: this is not a subclass of ActiveRecord::Base # this class just serves as a container to aggregate all "observable" objects class Observation attr_accessor :user, :items def initialize(user, items) self.user = user self.items = items end # The JSON needs to be decoded before it's sent to the `to_json` method in the home_controller otherwise the JSON will be escaped... # What a mess! def to_json { :user => ActiveSupport::JSON.decode(user.to_json(:only => :username, :methods => [:foo, :bar])), :items => ActiveSupport::JSON.decode(auctions.to_json(:only => [:id, :name], :methods => [:zim, :gir])) } end end

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