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• how to save related models with non-null foreign key

  - by Fortress

  I have a model called user which has_one email. I put the foreign key (NOT NULL) inside users table. Now I'm trying to save it in the following way: @email = Email.new(params[:email]) @email.user = User.new(params[:user]) @email.save This raises a db exception, because the foreign key constraint is not met (NULL is inserted into email_id). How can I elegantly solve this or is my data modeling wrong?

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• Convert plain text list to html

  - by morbusg

  So I have a plain text list like this: I am the first top-level list item I am his son Me too Second one here His son His daughter I am the son of the one above Me too because of the indentation Another one And I would like to turn that into: <ul> <li>I am the first top-level list-item <ul> <li>I am his son</li> <li>Me too</li> </ul> </li> <li>Second one here <ul> <li>His son</li> <li>His daughter <ul> <li>I am the son of the one above</li> <li>Me too because of the indentation</li> </ul> </li> <li>Another one</li> </ul> </li> </ul> How would one go about doing that?

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• has_many :through name suggestions

  - by user1084769

  I have three models, user, achievement, badge and I plan on using has_many :through instead of has_many_and_belongs_to since I will have a few extra fields in the join tables. According to a Railscast I watched, using this method requires coming up with new model names and not user_badge or user_achievement. For my User Achievement join what do you think of Accomplishment? For my User Badge join what do you think of Distinction?

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• How can I get FOUND_ROW()s from an active record object in rails?

  - by Justin Tanner

  When querying the database with: @robots = Robot.all(:limit => 50, :offset => 0) What is the best way to get the total number of rows without the :limit? In raw MySQL you could do something like this: SELECT SQL_CALC_FOUND_ROWS * FROM robots LIMIT 0, 50 SELECT FOUND_ROWS();

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• rais belong_to which class to choose

  - by Small Wolf

  There is a model relation like this. class A belongs_to :ref_config,:class_name => 'User' end My question is : the A has a attribute named flag, now i want to create a function like this: if flag == 1, I want the class A like this belongs_to :ref_config,:class_name => 'Department and if flag == 2, i want the class A like this belongs_to :ref_config,:class_name => 'User' How can I implement the function Thank you!

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• Tree data structure gems compared?

  - by huug

  I want to you use a tree structure for my navigation. I was thinking about using Ancestry, but then I found this article about 7 plugins for providing a tree structure to your models. What are the pros/cons for each plugin/gem and above all: which one do you recommend? Tnx!

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• Final Integration Testing for Q.A.

  - by CalebHC

  A medium sized rails app that our company has been working on is getting close to the end of development and we are going to start doing Q.A. testing on it. We've have been writing unit, functional and integration tests all along and our test coverage is about 99% (even though that really doesn't mean anything). We feel like we have a pretty good test suite but I was wondering if we should be writing final integration tests for every little action we are going to do during our Q.A. process. If so, would using Shoulda or Cucumber be a good idea? We haven't used either of those testing tools yet, but they sound really great. Any ideas or thoughts would be really helpful. Thanks

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• How can you pass an object from the form_for helper to a method?

  - by Alex

  So let's say I have a form which is being sent somewhere strange (and by strange we mean, NOT the default route: <% form_for @form_object, :url => {:controller => 'application', :action => 'form_action_thing'} do |f| %> <%= f.text_field :email %> <%= submit_tag 'Login' %> <% end %> Now let's say that we have the method that accepts it. def form_action_thing User.find(????? :email ?????) end My questions are thus: How does can I make the object @form_object available to the receiving method (in this case, form_action_tag)? I've tried params[:form_object], and I've scoured this site and the API, which I have to post below because SO doesn't believe I'm not a spammer (I'm a new member), as well as Googled as many permutations of this idea as I could think of. Nothing. Sorry if I missed something, i'm really trying. How do I address the object, once I've made it accessible to the method? Not params[:form_object], I'm guessing.

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• Rails 2.3.5: flash[:notice] disappears after redirect_to call

  - by xyzman

  Here I've got two controller methods: def invite if request.post? begin email = AccountMailer.create_invite(@user,url) AccountMailer.deliver(email) flash[:notice] = "Invitation email sent to #{@user.email}" rescue #mail delivery failed flash[:error] = "Failed to deliver invitation" end redirect_to :action => :show, :id => @user.id end end and def show @title = "User #{@user.full_name}" end The problem is, when I send an invitation, and get redirected to ./show, I see no messages at all. If I change redirect_to to render, the message appears. Still, isn't it intended for flash to work in the immediate subsequent requests? BTW, I'm using Rails+Passenger setup, could it be so that redirected request goes to another application instance?

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• Rails: Pass association object to the View

  - by Fedyashev Nikita

  Model Item belongs_to User. In my controller I have code like this: @items = Item.find(:all) I need to have a corresponding User models for each item in my View templates. it works in controller(but not in View template): @items.each { |item| item.user } But manual looping just to build associations for View template kinda smells. How can I do this not in a creepy way?

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• Group by with ActiveRecord in Rails

  - by Adnan

  Hello, I have a the following table with rows: ================================================================ id | name | group1 | group2 | group3 | group4 | ================================================================ 1 | Bob | 1 | 0 | 0 | 1| ================================================================ 2 | Eric| 0 | 1 | 0 | 1| ================================================================ 3 | Muris | 1 | 0 | 1 | 1| ================================================================ 4 | Angela | 0 | 0 | 0 | 1| ================================================================ What would be the most efficient way to get the list with ActiveRecords ordered by groups and show their count like this: group1 (2) group2 (1) group3 (1) group4 (4) All help is appreciated.

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• Rails activerecord includes. How to access the included columns?

  - by Lee Quarella

  I my User has_many :event_patrons and EventPatron belongs_to :user. I would like to slap together the user with one specific event patron with something like this sql statement: SELECT * FROM `users` INNER JOIN `event_patrons` ON `event_patrons`.`user_id` = `users`.`id` WHERE `event_patrons`.`event_id` = 1 So in rails I tried this: User.all(:joins => :event_patrons, :condidions => {:event_patrons => {:event_id => 1}}) But that gives me SELECT users.* instead of SELECT *: SELECT `users`* FROM `users` INNER JOIN `event_patrons` ON `event_patrons`.`user_id` = `users`.`id` WHERE `event_patrons`.`event_id` = 1 I then tried to switch the :joins with :include and got a whole jumbled mess that still returned me only the columns in User and none from EventPatron. What am I missing?

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• Modeling Buyers & Sellers in a Rails Ecommerce App

  - by MikeH

  I'm building a Rails app that has Etsy.com style functionality. In other words, it's like a mall. There are many buyers and many sellers. I'm torn about how to model the sellers. Key facts: There won't be many sellers. Perhaps less than 20 sellers in total. There will be many buyers. Hopefully many thousands :) I already have a standard user model in place with account creation and roles. I've created a 'role' of 'seller', which the admin will manually apply to the proper users. Since we'll have very few sellers, this is not an issue. I'm considering two approaches: (1) Create a 'store' model, which will contain all the relevant store information. Products would :belong_to :store, rather than belonging to the seller. The relationship between the user and store models would be: user :has_one store. My main problem with this is that I've always found has_one associations to be a little funky, and I usually try to avoid them. The app is fairly complex, and I'm worried about running into a cascade of problems connected to the has_one association as I get further along into development. (2) Simply include the relevant 'store' information as part of the user model. But in this case, the store-related db columns would only apply to a very small percentage of users since very few users will also be sellers. I'm not sure if this is a valid concern or not. It's very possible that I'm thinking about this incorrectly. I appreciate any thoughts. Thanks.

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• Multiple conditions with will_paginate

  - by user363243

  I am using will_paginate for pagination but I can't seem to use more than one condition at a time. For example, if I want to have a sql query that ends in "Where office_id = 5", then it's pretty straight forward, I can do that. but what if I want to do "Where office_id = 5 AND primary_first = 'Mark'"? I can't do that. I have no idea how to enter multiple conditions. Can you help?? Below is an example of my code: def self.search(search, page, office_id) paginate :per_page => 5, :page => page, :conditions => ['office_id', "%#{office_id}"], # + ' and primary_first like ?', "%#{params[:search]}%"], #:conditions => ['primary_first', "%#{search}%"], :order => 'created_at' end Thank you for your help!

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• scope equivalent in rails 2.3.x?

  - by Jacob Relkin

  Is there a way to generate a group of routes under an admin scope without having to create a new physical directory (like namespace requires you to). I know that in Rails 3 there is a scope method on the route mapper, and this appears to do what I want, but apparently it doesn't exist in Rails 2.3.x My goal is to have a route like this: "/admin/products" map to "app/controllers/products_controller, not "app/controllers/admin/products_controller". Is there any way to accomplish this in Rails 2.3.x?

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• How To Create A Link For "save Image As" To Download an Image In Rails

  - by Kuya

  I want to make a link download like this http://idwallpaper.com/download.php?image_id=1517 I have tried on other tutorial like this <script> function SaveFile(fname){ img.document.execCommand('saveas', null ,fname) } </script> <iframe id="img" src="myimage.jpg" width="(image width + 20)px" height="(image height + 25)px" scrolling="no" frameborder="0px"></iframe> <button onclick="SaveFile('myimage.jpg');">save as</button> Does not work in FireFox though.....

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• How do i play with my cock for 6 hours on viagra without coming like a steam train, I've used crack

  - by Stan the Fart

  Come on, wank me off please, i gotta spunk in no less than 8 hours

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• How do I dynamically change the path_to()?

  - by Angela

  I currently have three methods which I want to collapse into one: def send_email(contact,email) end def make_call(contact, call) return link_to "Call", new_contact_call_path(:contact => contact, :call => call, :status => 'called') end def make_letter(contact, letter) return link_to "Letter", new_contact_letter_path(:contact => contact, :letter => letter, :status => 'mailed') end I want to collapse the three into one so that I can just pass the Model as one of the parameters and it will still correctly create the path_to. I am trying to do this with the following, but stuck: def do_event(contact, call_or_email_or_letter) model_name = call_or_email_or_letter.class.name.tableize.singularize link_to "#{model_name.camelize}", new_contact_#{model_name}_path(contact, call_or_email_or_letter)" end

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• Ajax response seems to be getting lost

  - by Ringo Blancke

  I'm using the ddslick jquery dropdown plugin in conjunction with my Rails app. In view1, I have $('#challenges_dropdown').ddslick({ <snipped> onSelected: function (data) { $.ajax({ url: "/load_data", type: "GET", data: {"id": data.selectedData.value} }); } }); I.e., I make a call to my controller to load_data. The controller receives this correctly and then at the end, makes a call to render a separate view render "data" This view contains a script snippet that needs to run in order to update some elements of my original view. For some reason, this script snippet is just not running. I'm very confused. When I use a regular link with data-remote="true", then the whole process works perfectly. However, when I make an AJAX call, it fails. What's going on?? Thanks! Ringo

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• How can I get model names from inside my app?

  - by Cameron

  I have a bunch of models in a sub-directory that inherit from a model in the models root directory. I want to be able to set a class variable in another model that lists each inherited model class. i.e @@groups = sub_models.map do { |model| model.class.to_s } Not sure how to get at this info though...

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• Delayed Jobs is not finding Records and failing..

  - by Trip

  In my app, delayed jobs isn't running automatically on my server anymore. It used to.. When I manually ssh in, and perform rake jobs:work I return this : * Starting job worker host:ip-(censored) pid:21458 * [Worker(host:ip-(censored) pid:21458)] acquired lock on PhotoJob * [JOB] host:ip-(censored) pid:21458 failed with ActiveRecord::RecordNotFound: Couldn't find Photo with ID=9237 - 4 failed attempts This returns roughly 20 times over for what I think is several jobs. Then I get a few of these: [Worker(host:ip-(censored) pid:21458)] failed to acquire exclusive lock for PhotoJob And then finally one of these : 12 jobs processed at 73.6807 j/s, 12 failed ... Any ideas what I should be mulling over? Thanks so much!

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• Override as_json or to_json model class name

  - by Jack

  I'd like to modify the classname when calling to_json on an AR model. i.e. Book.first.to_json #=> "{\"book\":{\"created_at\":\"2010-03-23 Book.first.to_json(:root => 'libro') #=> "{\"libro\":{\"created_at\":\"2010-03-23 Is there an option to do this?

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• How to set a predefined value in a form in Rails

  - by marco

  So I just got started in Rails, and I'm trying to create an Object (a book_loan in my case) with a Form. The thing is that I get to this form by clicking on a book, so I pass the book_id as a parameter, like localhost:3000/loans/new?id=1. Now I don't want the user to be able to set the book id field in the form, since I already know the id. So my question is how to set the value in the form. I have been trying things like: <% form_for(@loan) do |f| %> <%= f.error_messages %> ... <%= @loan.book_id = params[:id] %> <%= f.submit 'Create' %> <% end %> without any success. Does anybody have a hint for me?

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• Is it possible to run a SQL-only file from a "rake db:create"?

  - by Somebody still uses you MS-DOS

  I'm trying to install a software called Teambox in my Dreamhost shared account. I have no experience with Rails. I just want to install the software in the shared hosting. In this shared hosting, all dependencies are ok, but I have to create the dabatase from their panel. I can't create in command line (ssh). So, when I run "rake db:create" these's an error, because the db already exists (because I created in panel). I've already contacted support. They can't change this policy. How do I populate my tables "by hand" in this case? Which files should I look inside Teambox's folder... Thanks!

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• Rails - Accessing Model Attributes in Forms

  - by stringo0

  Hi, How do I access a model's parent's attribute in a form? For example, for the following form for answer, I want to access answer.question.text and use that for the question - how do I do this? Thanks! <% form_for :answers do |ans| %> <%= ans.label :question, "Question" %> <%= ans.text_field :value %>

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