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  • How can I get all the checked items from a submitted form with sinatra's params?

    - by 102405176597896213397
    I'm running Sinatra 1.0 with HAML, my form has a number of checkboxes, for example books I like, and you would select all the books you want. The checkbox name is "books". In sinatra params['books'] there should be an array of all the books that were checked, but it only has the last item that was checked, not an array. How can I get all the checked items? HAML: %form{:action => "/test", :method => 'post'} %input{:name=>'check',:type=>'checkbox',:value=>'item1'} item 1 %input{:name=>'check',:type=>'checkbox',:value=>'item2'} item 2 %input{:name=>'check',:type=>'checkbox',:value=>'item3'} item 3 %input{:type => "submit", :value => "send", :class => "button"} Sinatra get method post '/test' do puts params['check'] #should be an array but is last item checked end

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  • Multiple instance_of?

    - by c00lryguy
    How would I make Object#instance_of? accept multiple arguments so that something like the below example would work? class Foo; end class Bar; end class Baz; end my_foo = Foo.new my_bar = Bar.new my_baz = Baz.new my_foo.instance_of?(Foo, Bar) # => true my_bar.instance_of?(Foo, Bar) # => true my_baz.instance_of?(Foo, Bar) # => false

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  • Problem in mutiple :dependent=> :destroy when multiple polymorphic is true

    - by piemesons
    I have four models question, answer, comment and vote.Consider it same as stackoverflow. Question has_many comments Answers has_many comments Questions has_many votes answers has_many votes comments has_many votes Here are the models (only relevant things) class Comment < ActiveRecord::Base belongs_to :commentable, :polymorphic => true has_many :votes, :as => :votable, :dependent => :destroy end class Question < ActiveRecord::Base has_many :comments, :as => :commentable, :dependent => :destroy has_many :answers, :dependent => :destroy has_many :votes, :as => :votable, :dependent => :destroy end class Vote < ActiveRecord::Base belongs_to :votable, :polymorphic => true end class Answer < ActiveRecord::Base belongs_to :question, :counter_cache => true has_many :comments, :as => :commentable , :dependent => :destroy end Now the problem is whenever i am trying to delete any question/answer/comment its giving me an error NoMethodError in QuestionsController#destroy undefined method `each' for 0:Fixnum if i remove this line from any of the model (question/answer/comment) has_many :votes, :as => :votable, :dependent => :destroy then it works perfectly. It seems there is a problem while deleting the records active record is not able to find out the proper path because of multiple joins within the tables.

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  • How to simulate a close() in facebox

    - by Bragaadeesh
    Hi, I am using facebox popup in one of my pages. I am having a button in the popup dialog. When I click that button the facebox popup should close (the same way it closes when we press outside the popup). How to do that? Also, I am doing some Ajax stuff when that button is being pressed so I cannot override the onClick event.

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  • :include and table aliasing

    - by dondo
    I'm suffering from a variant of the problem described here: ActiveRecord assigns table aliases for association joins fairly unpredictably. The first association to a given table keeps the table name. Further joins with associations to that table use aliases including the association names in the path... but it is common for app developers not to know about [other] joins at coding time. In my case I'm being bitten by a toxic mix of has_many and :include. Many tables in my schema have a state column, and the has_many wants to specify conditions on that column: has_many :foo, :conditions => {:state => 1}. However, since the state column appears in many tables, I disambiguate by explicitly specifying the table name: has_many :foo, :conditions => "this_table.state = 1". This has worked fine until now, when for efficiency I want to add an :include to preload a fairly deep tree of data. This causes the table to be aliased inconsistently in different code paths. My reading of the tickets referenced above is that this problem is not and will not be fixed in Rails 2.x. However, I don't see any way to apply the suggested workaround (to specify the aliased table name explicitly in the query). I'm happy to specify the table alias explicitly in the has_many statement, but I don't see any way to do so. As such, the workaround doesn't appear applicable to this situation (nor, I presume, in many 'named_scope' scenarios). Is there a viable workaround?

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  • What's causing "NoMethodError: undefined method `include?' for nil:NilClass"

    - by NudeCanalTroll
    I have a Book model in my Rails application, with various properties (aka columns in the book db table). One of these properties is "ranking". Recently, may app has started to throw NoMethodError: undefined method 'include?' for nil:NilClass for the following code: def some_method(book, another_arg) return book.ranking unless book.ranking.blank? ... end However, it's not consistent. The vast majority of the time, accessing book.ranking works -- the error is thrown maybe 2-4% of the time. If I change the code to book[:ranking] or book['ranking'] instead of book.ranking, it works 100% of the time. Any ideas?

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  • Nested Resource - How to pass needed keys, and attribute to update?

    - by Jason B
    My nested resources are working for form_for updates, but I have a few toggles that I need to setup to change a status field. So I am using link_to, and accessing the url helper. link_to "toggle", edit_project_expense_path(@project[:id],expense_item[:id]) routes.rb resources :projects do resources :expenses end match '/submit_expense/:id' => 'expenses#submit_expense', :as => 'submit_expense' rake routes edit_project_expense GET /projects/:project_id/expenses/:id/edit(.:format) expenses#edit My question is: How can I also send along :approval_status = "1", with my link_to?

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  • Rails: Is there a way to check for incomplete JPG file upload?

    - by user206481
    I have a Rails app that processes and serves up jpg files that were uploaded via FTP. On several occasions the FTP process was disconnected and left many incomplete .jpg files. I was surprised to see that the incomplete jpgs behave as normal jpg files in my app even tho they have incomplete image data. I have since implemented a more robust FTP process where the uploaded file is initially *.tmp and gets renamed to .jpg after an FTP success code is received. My problem is, I still have all of these incomplete jpg files on the server and can't figure out how to programmatically weed them out. I can actually display them in a view without generating any errors, but there is only a partial image there. I tried RMagick but they all successfully load (using Image.read) and report the valid x & y resolutions. I have so far not been able to determine a way to programmatically differentiate between an incomplete and complete jpg uploaded image. Any ideas?

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  • How do I form a Rails link_to with custom field value as parameter

    - by rwheadon
    I have an invoice form where I'm giving the user opportunity to apply coupons to the invoice total. These coupons are held in another Model and I am going to do a lookup on the Coupon code (something like "20OFFONFRIDAY") which I will use to find what the restrictions and benefits of the coupon. (and to see if it even exists at all) The invoice does not have "coupon_code" on it so I hand forged the field onto my form with html: <% if (@invoice.status == 'new') %> <input id="coupon_code" name="coupon_code" type="text"/> <% end %> and I am calling a controller method with link_to and would like something like the following jquery enhanced link_to to work: <%= link_to "Apply Coupon", { :controller=>"invoices", :id=>@invoice.id, :coupon_code=>$('.coupon_code').val(), :action=>"apply_coupon_code" }, :method=>"post" %> ^formatted for easier reading Then inside my "apply_coupon_code" method I will go off to a couple other models and perform business logic before returning the updated invoice page. ...but maybe it's a pipe dream. I guess if push came to shove I could add the "coupon_code" field to my invoice model (even though it's persisted elsewhere.) so it's part of the entity and thus easily available on my form to send back into a controller, but I just hate adding a column to make a coupon validation easier. I figured I'd ping stackoverflow before taking that path.

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  • How/When/Where to Extend Gem Classes (via class_eval and Modules) in Rails 3?

    - by viatropos
    What is the recommended way to extend class behavior, via class_eval and modules (not by inheritance) if I want to extend a class buried in a Gem from a Rails 3 app? An example is this: I want to add the ability to create permalinks for tags and categories (through the ActsAsTaggableOn and ActsAsCategory gems). They have defined Tag and Category models. I want to basically do this: Category.class_eval do has_friendly_id :title end Tag.class_eval do has_friendly_id :title end Even if there are other ways of adding this functionality that might be specific to the gem, what is the recommended way to add behavior to classes in a Rails 3 application like this? I have a few other gems I've created that I want to do this to, such as a Configuration model and an Asset model. I would like to be able to add create an app/models/configuration.rb model class to my app, and it would act as if I just did class_eval. Anyways, how is this supposed to work? I can't find anything that covers this from any of the current Rails 3 blogs/docs/gists.

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  • Create select based on routing, how?

    - by huug
    I am trying to implement navigation like in Tree Based Navigation but based on url's defined in routes.rb (named routes, resources, ...). Is it possible to retreive a collection of all routes defined in routes.rb? So I can use it in a select like this: <%= f.collection_select :url, Route.all, :url, :name %> Tnx!

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  • Capistrano deploy:migrate Could not find rake-0.9.2.2 in any of the sources

    - by Kyle
    My Capistrano deploy:migrate task is set to run a simple rake db:migrate command, as follows: env PATH=/home/user/.gems/bin sh -c 'cd /home/user/app/releases/20121003140503 && rake RAILS_ENV=production db:migrate' When I run this task during an ssh session manually it completes successfully. However when I run from my local development box, I receive the following error: ** [out :: app] Could not find rake-0.9.2.2 in any of the sources I am able to locate my rake gem by typing which rake via ssh (/home/user/.gems/bin/rake) and rake --version gives me "rake, version 0.9.2.2," so I don't understand why this command fails via Capistrano?

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  • Wrong route generation using namespace

    - by Plume
    Hi people! I am building an administration space in my web application. To do this, I am using namespaces but even if the rake generated routes are ok, when i follow the root of my admin space I get an error: Routing Error No route matches "/guru" My routes.rb : Baies::Application.routes.draw do |map| resources :fights resources :actions resources :users namespace :guru do root :to => "guru#index" resources :users end root :to => "public#index" end My arbo: . `-- app `-- controllers |-- actions_controller.rb |-- application_controller.rb |-- fights_controller.rb |-- guru | |-- guru_controller.rb | `-- users_controller.rb |-- public_controller.rb `-- users_controller.rb For information, the routes /guru/users works :) Thanks for help! @tchaOo°

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  • Showing pagination with only single page using will_paginate

    - by James
    I'm using will_paginate as standard, but it only shows the pagination controls (< 1 2 etc) when there's more than one page to display. Normally, this would be what is wanted, but I want to see the pagination controls (for UI consistency and to get round an annoying CSS quirk in the system I'm working on) even when there's only 1 page to display (showing < 1 ). Is this possible?

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  • rails 3 how to automatically post user_id in column of comments

    - by user568502
    hi, im totally new to rails. here my question: i made an app with articles and comments and use devise for authentication sadly im only able to post 1 hyperlink so this is the middle part of my post with the files at gist: https://gist.github.com/771366 the article_id is pre selected in the comments/_form - but the user_id isnt. i googled a lot, tried value = session[:user_id] and others, but nothing worked would be great if someone could tell me how it works ^^ thx

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  • Session management in Rails (2.3)

    - by JussiR
    Apparently, after upgrading to Rails 2.3 my session storage has stopped working. I used to have this: session :session_expires = 3.years.from_now in my application_controller.rb, but now every time i close the browser (chrome) the session expires. I read from somewhere that session_expires would have changed to expire_after, but session :expire_after = 3.years.from_now didn't do any good eihter.

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  • How can I display a list of three different Models sortable by the same :attribute in rails?

    - by Angela
    I have a Campaign model which has_many Calls, Emails, and Letters. For now, these are each a separate Model with different controllers and actions (although I would like to start to think of ways to collapse them once the models and actions stabilize). They do share two attributes at least: :days and :title I would like a way to represent all the Calls, Emails, and Letters that belong_to a specific Campaign as a sortable collection (sortable by :days), in a way that outputs the model name and the path_to() for each. For example (I know the below is not correct, but it represents the kind of output/format I've been trying to do: @campaign_events.each do |campaign_event| <%= campaign_event.model_name %> <%= link_to campaign_event.title, #{model_name}_path(campaign_event) %> end Thanks so much. BTW, if this matters, I would then want to make the :days attribute editable_in_place.

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  • How can I add two models in one form, where one model is a has_many :through?

    - by Angela
    How do I model having multiple Addresses for a Company and assign a single Address to a Contact? Contacts belong_to a Company. A Company has_many Contacts. A Company also has_many Addresses. And each Contact has_one Address. I want to be able, whenever I create a New Contact, to access all the addresses in all Contacts that belong to the Company. Here is are my Models: class Company < ActiveRecord::Base attr_accessible :name, :phone, :addresses has_many :contacts has_many :addresses, :through => :contacts end class Contact < ActiveRecord::Base attr_accessible :first_name, :last_name, :title, :phone, :fax, :email, :company, :date_entered, :campaign_id, :company_name, :address belongs_to :company has_one :address accepts_nested_attributes_for :address end class Address < ActiveRecord::Base attr_accessible :street1 has_many :contacts end How do I create the View in the _form for Contacts so that I can 1) Add an Address when creating a Contact; 2) Display the options of the Address. Here is how I am doing step 1, which is just to add a new address for a new contact: <% f.fields_for :addresses do |builder| %> <p> <%= builder.label :street1, "Street 1" %> </br> <%= builder.text_field :street1 %> <p> Right now, what I have doesn't work. The console says I cannot mass-assign addresses when I hit "submit" on this New contact form.

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  • How does Facebook codes their Cropping tool?

    - by Trip
    I ask this because I am currently trying to work out my own technique, and there are huge strategic hangups for the entire site when your begin this. Of them are: Using jCrop and rMagick, it takes up a huge amount of processing ( to which I have backgrounded ). Because I have it backgrounded, I must by ajax develop a feature that auto-updates every five seconds to check when the backgrounding is done. Has anyone accomplished this with their sites? If so, what are some creative techniques you came across to keep the processing streamline, and the users happy?

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  • declerative_authorization on User problem

    - by Webpain
    I am trying to block all default methods except create and update in my users controller using declerative_authorization. But at the time I add filter_resource_access or filter_access_to into my usersController i always get "Couldn't find User without an ID". Anyone care to explain why this could be happening? class UsersController :new end end def show @user = @current_user end def edit @user = @current_user end def update @user = @current_user # makes our views "cleaner" and more consistent if @user.update_attributes(params[:user]) flash[:notice] = "Account updated!" redirect_to account_url else render :action = :edit end end end

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  • Return result of block passed to #scan during regex

    - by Oli
    I've searched and not been able to find the right way of doing what I'm trying to. I read a file line by line and want to create a new object from a regex on each line. I'm not using an XML parser because the data is not well formed and listed below is all I need to get from each line. I can't seem to get scan to return the result of the block. It just returns the original string. I have temporarily gotten around it by creating this temp variable, but I'm sure there is a better way. enum = File.foreach(filename) enum.map do |line| temp = nil line.scan(/<cab id="(\w+)" updates="(\d+)"/) { |a,b| temp = Cab.new(a,b) } temp end Thanks for any help.

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  • How to create picture slideshows in a rails project? Flash or otherwise

    - by Janak
    In a rails project how would I create a picture slideshow? It could be generated as flash or use prototype or something else. I just want a series of images (as a sub-part of a web page, not be the whole page) to fade into each other, and to advance manually if clicked. It would be nice if I could do things like slowly zoom into the images I imagine there must be a plugin or something to handle this?

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  • Can an ActiveRecord before_save filter halt the save without halting the transaction?

    - by Michael Boutros
    Is there any way for a before_save filter to halt the entire save without halting the transaction? What I'm trying to do is have a "sample" version of my model that the user can interact with and save but the changes themselves are never actually saved. The following will halt the transaction and (naturally) return false when I call @model.update_attributes: before_filter :ignore_changes_if_sample def ignore_changes_if_sample if self.sample? return false end end Thanks!

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  • Using Cucumber or RSpec+Selenium to create end user documentation?

    - by carolclarinet
    Has anyone tried creating end user (potentially online, potentially to be printed) help/documentation out of your cucumber scenarios? Or taken screenshots for use in documentation using RSpec and Selenium RC's ability to do so? For Cucumber, I'm imagining something like: Scenario: If you want to add a link Given I am on the edit blog post page When I press the "add link" button And I type in a link URL "http://stackoverflow.com" And I click "OK" Then the blog post should have 1 link Translating to the documentation: If you want to add a link, go to the edit blog post page. Press the "add link" button and type a URL, like "http://stackoverflow.com", into the link URL field. Click "OK". Would it be worth my time to try and, for one, write something to parse my Cucumber features into documentation, and two, to write/structure my Cucumber features in such a way as to create good documentation? Would the resulting documentation end up sounding really boring without much variation in the structure? Is there anything else out there like this idea? Doxygen looks like it's more for code documentation than end-user documentation. What about automatically taking screenshots? This seems like a more fruitful path-- just reuse the code that takes a screenshot when an RSpec test fails and have it take one in prescribed situations. Is there a better way to do this?

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