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• how to read only english characters

  - by ralph

  I am reading a file that sometimes has chinese and characters of languages other than english. How can I write a regex that only reads english words/letters? should it just be /^[a-zA-Z]+/ ? If I do the above then words like eété will still be picked but I don't want them to be picked: "été".match(/^[a-zA-Z]+/) => #nil good I didnt want that word "eété".match(/^[a-zA-Z]+/) => #not nil tricked into picking something i did not want

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• show array size with will_paginate

  - by chief

  @users = User.paginate( :page => params[:page], :per_page => 2, I would like to return the total number of results. @users.size simply gives me the number of results on a page. If page 1 has 2 users @users.size = 2, going to page 2 with say 1 user @users.size = 1. How can I show the size of all the users?

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• Rails select helper. How do I select the default value?

  - by Ram

  In Rails erb, am using the snippet to show visiting team in a tournament match. How do I get to initially show the current visiting_team? What am I doing wrong? <%= f.select(:visiting_team_id, Team.all.collect{|t| [t.name, t.id] }) %>

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• Rails - Dynamic name routes namespace

  - by Kuro

  Hi, Using Rails 2.3, I'm trying to configure my routes but I uncounter some difficulties. I would like to have something like : http:// mydomain.com/mycontroller/myaction/myid That should respond with controllers in :front namespace http:// mydomain.com/aname/mycontroller/myaction/mydi That should respond with controllers in :custom namespace I try something like this, but I'm totaly wrong : map.namespace :front, :path_prefix => "" do |f| f.root :controller => :home, :action => :index f.resources :home ... end map.namespace :custom, :path_prefix => "" do |m| m.root :controller => :home, :action => :index m.resources :home ... m.match ':sub_url/site/:controller/:action/:id' m.match ':sub_url/site/:controller/:action/:id' m.match ':sub_url/site/:controller/:action/:id.:format' m.match ':sub_url/site/:controller/:action.:format' end I put matching instruction in custom namespace but I'm not sure it's the right place for it. I think I really don't get the way to customize fields in url matching and I don't know how to find documentation about Rails 2.3, most of my research drove me to Rails 3 doc about the topic... Somebody to help me ?

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• How can I get rails to not render escaped quotes as \&quot;

  - by James

  In my layout I have <% @current_user.popups.each do |p| %> <% content_for :script do %> <%= "$(document).ready ( function() { $.jGrowl(\"#{p.message}\", { sticky: true }) });" %> <% end %> <% end %> And then in the script section I have <%= yield :script %> The problem is that this renders the escaped quotes as \&quot; and javascript doesn't like this. How can I stop this from happening? Or is there another approach to this? I can't use single quotes because I'd like to have some html in the message. I'd appreciate any help.

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• Rails passing additional params in some tag helpers

  - by Filip

  Currently image_tag("file.jpg") produces normal image html tag, BUT src="file.jpg*?7485793246*" what the hell are those numbers anyway and how to disable them?

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• How to test that invalid arguments raise an ArgumentError exception using RSpec?

  - by John Topley

  I'm writing a RubyGem that can raise an ArgumentError if the arguments supplied to its single method are invalid. How can I write a test for this using RSpec? The example below shows the sort of implementation I have in mind. The bar method expects a single boolean argument (:baz), the type of which is checked to make sure that it actually is a boolean: module Foo def self.bar(options = {}) baz = options.fetch(:baz, true) validate_arguments(baz) end def self.validate_arguments(baz) raise(ArgumentError, ":baz must be a boolean") unless valid_baz?(baz) end def self.valid_baz?(baz) baz.is_a?(TrueClass) || baz.is_a?(FalseClass) end end

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• How good is the Rails sanitize() method?

  - by Horace Loeb

  Can I use ActionView::Helpers::SanitizeHelper#sanitize on user-entered text that I plan on showing to other users? E.g., will it properly handle all cases described on this site? Also, the documentation mentions: Please note that sanitizing user-provided text does not guarantee that the resulting markup is valid (conforming to a document type) or even well-formed. The output may still contain e.g. unescaped ’<’, ’’, ’&’ characters and confuse browsers. What's the best way to handle this? Pass the sanitized text through Hpricot before displaying?

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• How to do a Post/Redirect/Get using Sinatra?

  - by John Topley

  What's Sinatra's equivalent of Rails' redirect_to method? I need to follow a Post/Redirect/Get flow for a form submission whilst preserving the instance variables that are passed to my view. Does the redirect method preserve them? (I'm at work at the moment and don't have access to Sinatra to try for myself.)

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• Creating object in database without showing view to user

  - by samuil

  I have controller with action new, and I want it to create ActiveRecord::Base descendant object, and write it into database (without showing it to user). def new active_order = current_user.orders.find {|o| o.status > 0 } active_order = Order.new if active_order.nil? (...) end Order.new creates local object, but my question is -- how to make Rails to fill it with default values and write to database?

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• rails separate login for an api

  - by Squadrons

  I have a very simple api that is part of a rails app that requires logging in. I just need a way to make the api part accessible with a simple form that allows the user to enter parameters like a key (just a simple one stored in the DB, no OAuth or anything), a userId to find and return a user via json, and maybe some other parameters like asking for their schedule. How can I keep this seperate from the rest of the app, making it a public facing form that will grant access only to the api? Thanks.

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• Change a regexp in application.js from rails

  - by Markus

  I wand to change the regular expression in my application.js file from within a rails controller. Is that possible?

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• Searching and sorting by a float field with thinking sphinx

  - by nathan Verni

  I'm using thinking sphinx to for search on a rails app. I have a float field called 'height'. I need to be able to search this field for exact values (i.e. exactly 6.0, not 6.5). I also need to be able to sort on the field. What I have so far: indexes height, :sortable => true Problem: doesn't sort properly, returns 6.0 and 6.5 if I search for '6'

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• Compare a DateTime to the current date

  - by looloobs

  Hi I am trying to use a condition on events when the start_at DateTime is equal to or greater than Today's date. I want to list upcoming events, but clearly they are not upcoming if they have already passed. I have: @appointments = Event.find(:all, :conditions => ['move_id = ? AND start_at = ?', @move.id, Date.today]) I think I may be comparing apples and oranges here. It doesn't throw and error, just doesn't do what it is supposed to. Help! Thanks in advance.

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• Possible to automate a web search?

  - by ds1

  Is it possible in a website search form to enter in series of searches? I have a list of destinations and would like to see if for each destination the search returns a result or throws an error.

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• Select-all checkboxes in a FORM_TAG

  - by Horace Ho

  In a form_tag, there is a list of 10 to 15 checkboxes: <%= check_box_tag 'vehicles[]', car.id %> How can I select-all (put a tick in every single) checkboxes by RJS? Thanks EDIT: Sorry I didn't make my question clear. What I meant to ask is how to add a "Select/Un-select All" link in the same page to toggle the checkboxes.

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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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• One model and Many edit views

  - by user179438

  Hi, I have a model I named User, and I want use two different Views to edit it: the usual edit view and another view I called edit_profile. I had no problem in creating routing, controller and views: I added edit_profile and update_profile views, and I added on routes.rb the line: map.resources :users ,:member => {:edit_profile => :get, :update_profile => :put} The problem is: when I submit the form in edit_profile and some error occur in some input fields, rails reload the edit_path page instead of edit_profile_path page ! This is the form on edit_profile.html.erb form_for(:user, @user, :url => {:action => :update_profile}, :html => { :method => :put} ) do |f| = f.text_field :description = f.text_area :description = f.error_message_on :description .... .... = f.submit 'Update profile' After clicking Update profile, if input errors occur I want to show edit_profile view instead of edit view Do You have some ideas ? many thanks

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• how can I add a new action to a controller?

  - by Angela

  I used the following in routes to add a new action to my Email controller: map.resources :emails, :member => { :newfwd => :put} The expected result was that newfwd_email_path(:id = 1) would generate the following urL: emails/1/newfwd It does. But I get an error, it treats '1' as an action and 'newfwd' as an id. I want '1' to be interpreted as the id for emails, upon which the newfwd action acts. I'm not sure what I'm doing wrong. (Note: I am using Rails 2.3.8)

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• Select from multiple tables in Rails - Has Many "articles" through [table_1, table_2]?

  - by viatropos

  I'm in a situation where I need to get all articles that are tied to a User through 2 tables: article_access: gives users privilege to see an article article_favorites: of public articles, users have favorited these So in ActiveRecord you might have this: class User < ActiveRecord::Base has_many :article_access_tokens has_many :article_favorites def articles unless @articles ids = article_access_tokens.all(:select => "article_id").map(&:article_id) + article_favorites.all(:select => "article_id").map(&:article_id) @articles = Article.send(:scoped, :conditions => {:id => ids.uniq}) end @articles end end That gives me basically an articles association which reads from two separate tables. Question is though, what's the right way to do this? Can I somehow make 1 SQL SELECT call to do this?

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• How do I set IP access / password restrictions in Apache?

  - by Mouthbreather

  I'd like to restrict access to my Rails app (running on Apache/Passenger) to just two IPs, but if the visitor doesn't fall into those two IPs, I would like for him/her to be prompted to enter a password that would allow any user with the proper credentials to access the site from anywhere. I am new to configuring Apache and would appreciate any hints. Thanks!

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• Rails - Send emails through an exchange server

  - by Saurabh

  How does one use an exchange server to - Send an email from a rails application Authenticate credentials (user name / password) Thanks.

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• User HasOne ActiveToken, HasMany Tokens, how to setup in Rails?

  - by viatropos

  I have two simple models: class User < ActiveRecord::Base has_many :tokens # has_one doesn't work, because Token already stores # foreign id to user... # has_one :active_token, :class_name => "Token" # belongs_to doesn't work because Token belongs to # User already, and they both can't belong to each other # belongs_to :active_token, :class_name => "Token" end class Token < ActiveRecord::Base belongs_to :user end I want to say "User has_one :active_token, :class_name => 'Token'", but I can't because Token already belongs_to User. What I did instead was just manually add similar functionality to the user like so: class User < ActiveRecord::Base has_many :tokens attr_accessor :active_token after_create :save_active_token before_destroy :destroy_active_token # it belongs_to, but you can't have both belongs_to each other... def active_token return nil unless self.active_token_id @active_token ||= Token.find(self.active_token_id) end def active_token=(value) self.active_token_id = value.id @active_token = value end def save_active_token self.active_token.user = self self.active_token.save end def destroy_active_token self.active_token.destroy if self.active_token end end Is there a better way?

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• defaults for to_json in Rails with :include

  - by prateekdayal

  Let us say I have a model Post which belongs to a User. To convert to json, I do something like this @reply.to_json(:include => {:user => {:only => [:email, :id]}, :only => [:title, :id]) However, I want to set some defaults for this so I don't have to specify :only everytime. I am trying to override as_json to accomplish this. When I add as_json in User model, it is called when I do @user.to_json but when user is included in @reply.to_json, my overriden as_json for User is ignored. How do I make this work? Thanks

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• Rails object based permission/authorization engine?

  - by Vlad

  Hi I want to add "Sharing documents" feature to my app, like in google documents service. As i see: User can: can list/view/create/edit/delete own documents share own document to everyone - its a public document share own document to another user with read-only access share own document to another user with read-write access view list of own documents and users to whom he gave permission to read and write view list of foreign documents view/edit foreign document with read/write permissions Please tell me, which permission/authorization solution is preffered for my task?

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