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  • What does ruby include when it encounters the "include module" statement?

    - by Steve Weet
    If I have the following project structure project/ lib/ subproject/ a.rb b.rb lib.rb where lib.rb looks like this :- module subproject def foo do_some_stuff end end and a.rb and b.rb both need to mixin some methods within lib.rb and are both namespaced within a module like so :- require 'subproject/lib' module subproject class A include Subproject def initialize() foo() end end end What does ruby do when it encounters the include statement? How does it know that I want to only include the mixin from lib.rb rather than the whole module which includes both class A and class B, is this based purely on the require of subproject/lib or am I getting it wrong and it is including the whole of the module, including the definitions of Class A and B within themselves?

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  • using jquery to disable a series of radio buttons on demand.

    - by holden
    I'm trying to accomplish something similar to Wikipedia's History history page, dynamically disabling radio buttons in a series. Ie... if #4 in group two is selected, then 1-4 of group one are disabled, etc. I know how to disable them individually or as a group, but I'm not sure how to do it in a series of say 1-4: Individually: $("#version_history input[id^=versions_2_3]:radio").attr('disabled',true); or group: $("#version_history input[id^=versions_2]:radio").attr('disabled',true); The inputs are named versions_1_X and versions_2_X, X being some number. 1..2..3.. etc.

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  • Sort by values from hash table - Ruby

    - by Adnan
    Hello, I have the following hash of countries; COUNTRIES = { 'Albania' => 'AL', 'Austria' => 'AT', 'Belgium' => 'BE', 'Bulgaria' => 'BG', ..... } Now when I output the hash the values are not ordered alphabetically AL, AT, BE, BG ....but rather in a nonsense order (at least for me) How can I output the hash having the values ordered alphabetically?

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  • Haml formatting

    - by mathee
    I'm new to haml, so I'm still trying to figure out the formatting. I have an index.haml file with the following code. %h1 Welcome to Solidarity Hello, = @profile.first_name ! It renders like this: Welcome to SolidarityHello, user ! Here's the page source: <h1> Welcome to Solidarity </h1> Hello, frances ! It has a space between @profile.first_name and the exclamation mark. Why is that? And, how do I fix it?

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  • How to use visual_effect on DOM after loading the page?

    - by Acidburn2k
    I would like to make one of the div's hidden while rendring. After page is loaded I would like it to appear on the page using virtual_effect. I know how to do it in JS / jQuery. Is that possible with pure Ruby code using Prototype? update_page_tag doesn't really solves the problem It work ok with :highligth, but I can't get it to work with :apper or :slide_down.

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  • Connection error with heroku db:push with postgresql

    - by Toby Hede
    I have suddenly started seeing this strange error when trying to push my database to heroku. > heroku db:push Auto-detected local database: postgres://infinity:infinity@localhost/infinity_development?encoding=utf8 Failed to connect to database: Sequel::DatabaseConnectionError -> TypeError wrong argument type String (expected Array) My app works fine - the credentials are all set locally.

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  • NoMethodError for underscore

    - by siulamvictor
    I want to convert the string "Full Time" to "full_time" When I using "Full Time".underscore in irb, it prompt a error NoMethodError: undefined method `underscore' for "Full Time":String How can I fix it? Or is there any other way for me to get the above underscored result?

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  • Virgin STI Help

    - by Mutuelinvestor
    I am working on a horse racing application and I'm trying to utilize STI to model a horse's connections. A horse's connections is comprised of his owner, trainer and jockey. Over time, connections can change for a variety of reasons: The horse is sold to another owner The owner switches trainers or jockey The horse is claimed by a new owner As it stands now, I have model this with the following tables: horses connections (join table) stakeholders (stakeholder has three sub classes: jockey, trainer & owner) Here are my clases and associations: class Horse < ActiveRecord::Base has_one :connection has_one :owner_stakeholder, :through => :connection has_one :jockey_stakeholder, :through => :connection has_one :trainer_stakeholder, :through => :connection end class Connection < ActiveRecord::Base belongs_to :horse belongs_to :owner_stakeholder belongs_to :jockey_stakeholder belongs_to :trainer_stakeholder end class Stakeholder < ActiveRecord::Base has_many :connections has_many :horses, :through => :connections end class Owner < Stakeholder # Owner specific code goes here. end class Jockey < Stakeholder # Jockey specific code goes here. end class Trainer < Stakeholder # Trainer specific code goes here. end One the database end, I have inserted a Type column in the connections table. Have I modeled this correctly. Is there a better/more elegant approach. Thanks in advance for you feedback. Jim

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  • How do I search for a phrase using search logic?

    - by fivetwentysix
    Imagine case scenario, you have a list of recipes that have ingredients as a text. You want to see how many recipes contain "sesame oil". The problem with default searchlogic searching using Recipe.ingredients_like("sesame oil") is that any recipe with sesame OR oil would come up, when I'm searching for sesame+oil.

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  • Simple multilingual CMS?

    - by Christoffer
    Hi, I have been searching for a while now for a dead simple CMS with multi-language support. The ideal candidate is very lean and offers the possibility to set up different languages for different domains. It's OK if the language support is provided by a plugin/extension. For example I want example.com to point to English and example.fr should be French. With different URI-mappings for SEO. It can be developed in either of PHP, Ruby or Python and has to be open source. Any tips? Thank you EDIT / MORE DETAILS What I want is a CMS that is as simple to use and grasp for a client as Radiant is, but with tabs on each resource that can translate articles to different languages. Languages have to be able to use multiple domains, one for each language. I want to easily use the same article for more than one language as well as have articles (e.g. blog posts or news stories) that are only connected to one language. The CMS should be very light in core functionality (like Radiant, unlike Drupal/Joomla) but be easily extendable with plugins.

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  • RESTful membership

    - by FoxDemon
    I am currentlly trying to design a RESTful MembershipsController. The controller action update is used only for promoting, banning, approving,... members. To invoke the update action the URL must contain a Parameter called type with the appropriate value. I am not too sure if that is really RESTful design. Should I rather introduce sepearate actions for promoting,... members? class MembershipsController < ApplicationController def update @membership= Membership.find params[:id] if Membership.aasm_events.keys.include?(params[:type].to_sym) #[:ban, :promote,...] @membership.send("#{params[:type]}!") render :partial => 'update_membership' end end end

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  • Heroku powered private restricted beta

    - by Ben Sand
    I'd like to run an app in a restricted private beta on heroku. We're changing the app regularly and haven't done a security audit. To stop anyone exploiting stuff, we'd like to lock down the whole site, so you need a password to access anything. Ideally similar to using .htaccess and .htpasswd files to lock an entire site on an Apache server. Is there a simple one shot way to do this for a heroku hosted app?

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  • howto design an invite feature feature?

    - by fenec
    hello i am trying to implement a feature in my facebook application that would give 100 point to someone who would send 10 invitations. however i want a limit that feature for each user to use it only 10 times a day. how should i design my feature to do what i want

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  • Ruby - Escape Parenthesis

    - by Todd Horrtyz
    I can't for the life of me figure this out, even though it should be very simple. How can I replace all occurrences of "(" and ")" on a string with "\(" and "\)"? Nothing seems to work: "foo ( bar ) foo".gsub("(", "\(") # => "foo ( bar ) foo" "foo ( bar ) foo".gsub("(", "\\(") # => "foo \\( bar ) foo" Any idea?

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  • Updating protected using update_all

    - by Jack
    Since you cannot use the normal 'update' and 'update_attribute' methods from ActiveRecord to update a protected attribute, is the following the best way to update an attribute for a single user? User.update_all("admin = true","id = 1") I'm guessing this doesn't lie in the 'best practice' category, so I'm just curious if there is a more appropriate way.

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  • multiple visual effects on one event

    - by ZX12R
    I have a code that looks like this. <%= link_to_remote "View results", { :update=>"uxUpdateDiv" , :url=>{:controller=>"exam", :action=>"results"} , :loading=>visual_effect(:appear, "uxcLoader", :duration=> 0.1), :before =>visual_effect(:fade, "uxUpdateDiv", :duration => 0.1), :complete => visual_effect(:appear, "uxUpdateDiv", :duration => 1.5 ), :success=>visual_effect(:fade, "uxcLoader", :duration=> 1) } %> what happens here is not good enough for me. I want to add multiple effects for one event. Like the following: :complete=>(:fade, "uxLoader", :duration=>1 AND :fade, "uxTheOtherDiv", :duration=>1) How do i achieve this.? I am using jrails

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  • My helper methods in controller

    - by FancyDancy
    My app should render html, to answer when a user clicks ajax-link. My controller: def create_user @user = User.new(params) if @user.save status = 'success' link = link_to_profile(@user) #it's my custom helper in Application_Helper.rb else status = 'error' link = nil end render :json => {:status => status, :link => link} end My helper: def link_to_profile(user) link = link_to(user.login, {:controller => "users", :action => "profile", :id => user.login}, :class => "profile-link") return(image_tag("/images/users/profile.png") + " " + link) end I have tried such methods: ApplicationController.helpers.link_to_profile(@user) # It raises: NoMethodError (undefined method `url_for' for nil:NilClass) and: class Helper include Singleton include ApplicationHelper include ActionView::Helpers::TextHelper include ActionView::Helpers::UrlHelper include ApplicationHelper end def help Helper.instance end help.link_to_profile(@user) # It also raises: NoMethodError (undefined method `url_for' for nil:NilClass) In addition, yes, I KNOW about :helper_method, and it works, but i don't want to overload my ApplicationController with a plenty of that methods

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  • How do I insert an input's value into a separate form?

    - by ryan
    I'm making a tool for my university that allows students to create a list of classes by doing the following: Searching by course title for their course via an autocomplete input field. Adding that course to a separate form that upon being submitted creates a course list. I am trying to link the autocomplete and the course list form with an 'add to course list' button that inserts a hidden input field into the course list form which can subsequently be submitted by a 'create course list' button. My question is this: How do I take the value of the autocomplete input and insert it into the course list form without using AJAX? So far I have something like the following: <%= text_field_with_auto_complete :course, :title, :size => 40 %> <%= link_to_function "Add to Course List" do |page| page.insert_html :top, :course_list, hidden_field(:courses, :course, {:value => "$('course_title').value"}) %> <% form_for(@course_list) do |f|%> <div id="course_list">Insert selected courses here.</div> <% end %>

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  • ActiveMerchant Integration usage example?

    - by giorgian
    Where can I find a complete example of ActiveMerchant Integrations usage? I can see tons of examples of Gateways' usage, but couldn't see how an Integration should be used (e.g. what do you do in the return_url and cancel_return_url controller actions?)

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  • Sending elements of an array as arguments to a method call

    - by Bryce
    I have a method that accepts the splat operator: def hello(foo, *bar) #... do some stuff end I have an array with a variable length that I'd like to send into this hello method: arr1 = ['baz', 'stuff'] arr2 = ['ding', 'dong', 'dang'] I'd like to call the method with arr1 and arr2 as arguments to that method but I keep getting hung up in that *bar is being interpreted as an array instead of individual arguments. To make things more fun, I can't change the hello method at all. I'm looking for something similar to this SO question but in ruby.

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