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  • activerecord search conditions - looking for null or false

    - by Daniel
    When doing a search in active record I'm looking for record's that do not have an archived bit set to true. Some of the archived bits are null (which are not archived) others have archived set to false. Obviously, Project.all(:conditions => {:archived => false}) misses the projects with the archived bits with null values. How can all non-archived projects be selected wtih active record?

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  • Is there a SaaS for logging user activity?

    - by JoshL
    In almost every app that I build I create some kind of user log table to log various activities that my actual USERS (not visitors, but someone with an account) perform on the site. This is primarily used for customer service issues to allow me to pull up a record of the pages and actions that a user has visited. The downside to this is the size of the UserLogs table. It gets immense. I'm not sure if it is common practice or not for others to log INDIVIDUAL (not aggregate like Google Analytics) user behavior to a database, but if it is I'm wondering if any form of a SaaS exists to help offload this task? I essentially need a RESTful API that lets me store and retrieve individual user activity quickly and securely. Anyone know of any or am I the only one who has this issue?

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  • Should nested attributes be automatically deleted when I delete the parent record?

    - by brad
    I'm playing around with nested forms in attributes and have a model Invoice that has_many invoice_phone_numbers. I have the following line in my invoice.rb model file accepts_nested_attributes_for :invoice_phone_numbers, :allow_destroy => true, :reject_if => proc { |attrs| attrs.all? { |k, v| v.blank? } } This does what it should and I can delete invoice_phone_numbers from the form by selecting their 'delete' checkbox. But when I delete an Invoice, I have noticed that the nested invoice_phone_numbers are not also deleted. This causes problems as rails seems to reuse id numbers in the Invoice model (Should it? Does this depend on the database? I'm using SQLite3) so phone numbers from previous invoices turn up in new invoices after they have been created. Anyway, my question is should the nested attributes be deleted when I delete the parent attribute? Is there a way to make this happen automatically as part of the nesting process or do I need to deal with this in my invoice model? If so, what is the best way to do this? I would try to go about this with a before_destroy callback but want to know if this is the best way to do this. Anyway, thanks.

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  • Open source equivelants to VS / web reference proxy class autogen?

    - by seraphym
    As an ASP.NET developer, I'm used to working with how VS/C# transparently autogens proxy classes for web references (yes, I know, we're spoiled), but now that I'm creating documentation for more than one coding platform I'm trying to discover what the equivelant to that is in any other framework. So is there a similar way to work transparently with web reference proxy classes for say, RoR, PHP, and Python? And if there's nothing integrated, are there tools you recommend to autogen the proxy classes, or do you recommend to roll custom classes?

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  • rails db migration, undefined method `to_sym', cant figure out syntax

    - by oelbrenner
    the original migration looks like this: class CreateUsers true do |t| t.string :login, :limit = 40 t.string :name, :limit = 100, :default = '', :null = true t.string :email, :limit = 100 t.string :crypted_password, :limit = 40 t.string :salt, :limit = 40 t.string :remember_token, :limit = 40 t.datetime :remember_token_expires_at t.string :activation_code, :limit = 40 t.datetime :activated_at, :datetime t.string :state, :null = :no, :default = 'passive' t.datetime :deleted_at t.integer :occupation_id, :null = :yes t.datetime :paid_up_to_date, :date t.timestamps end and I am trying to change the default of "state" to be "active" instead of passive so my attempt at a migration looks like this: ( still learning.. be gentle ) class ChangeUserStateDefault < ActiveRecord::Migration def self.up change_column :users, :state, :null = :no, :default = 'active' end def self.down end end

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  • How do I avoid a race condition in my Rails app?

    - by Cathal
    Hi, I have a really simple Rails application that allows users to register their attendance on a set of courses. The ActiveRecord models are as follows: class Course < ActiveRecord::Base has_many :scheduled_runs ... end class ScheduledRun < ActiveRecord::Base belongs_to :course has_many :attendances has_many :attendees, :through => :attendances ... end class Attendance < ActiveRecord::Base belongs_to :user belongs_to :scheduled_run, :counter_cache => true ... end class User < ActiveRecord::Base has_many :attendances has_many :registered_courses, :through => :attendances, :source => :scheduled_run end A ScheduledRun instance has a finite number of places available, and once the limit is reached, no more attendances can be accepted. def full? attendances_count == capacity end attendances_count is a counter cache column holding the number of attendance associations created for a particular ScheduledRun record. My problem is that I don't fully know the correct way to ensure that a race condition doesn't occur when 1 or more people attempt to register for the last available place on a course at the same time. My Attendance controller looks like this: class AttendancesController < ApplicationController before_filter :load_scheduled_run before_filter :load_user, :only => :create def new @user = User.new end def create unless @user.valid? render :action => 'new' end @attendance = @user.attendances.build(:scheduled_run_id => params[:scheduled_run_id]) if @attendance.save flash[:notice] = "Successfully created attendance." redirect_to root_url else render :action => 'new' end end protected def load_scheduled_run @run = ScheduledRun.find(params[:scheduled_run_id]) end def load_user @user = User.create_new_or_load_existing(params[:user]) end end As you can see, it doesn't take into account where the ScheduledRun instance has already reached capacity. Any help on this would be greatly appreciated.

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  • What is good practice for writing web applications that control daemons (and their config files)

    - by Jones R
    Can someone suggest some basic advice on dealing with web applications that interact with configuration files like httpd.conf, bind zone files, etc. I understand that it's bad practice, in fact very dangerous to allow arbitrary execution of code without fully validating it and so on. But say you are tasked to write a small app that allows one to add vhosts to an apache configuration. Do you have your code execute with full privileges, do you write future variables into a database and have a cron job (with full privileges) execute a script that pulls the vars from the database and throws them into a template config file, etc. Some thoughts & contributions on this issue would be appreciated. tl;dr - how can you securely write a web app to update/create entries in a config file like apache's httpd.conf, etc.

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  • Can using Chronic impair your sense of time?

    - by Trip
    Haha.. I'm using Chronic to parse the time users add in the Calendar. Where the code works and implements the right time, the end result is that, IF a user adds a time, then it has no date, and because it has no date, it will not show in results. Any ideas? def set_dates unless self.natural_date.blank? || Chronic.parse(self.natural_date).blank? # check if we are dealing with a date or a date + time if time_provided?(self.natural_date) self.date = nil self.time = Chronic.parse(self.natural_date) else self.date = Chronic.parse(self.natural_date).to_date self.time = nil end end unless self.natural_end_date.blank? || Chronic.parse(self.natural_end_date).blank? # check if we are dealing with a date or a date + time if time_provided?(self.natural_end_date) self.end_date = nil self.end_time = Chronic.parse(self.natural_end_date) else self.end_date = Chronic.parse(self.natural_end_date).to_date self.end_time = nil end end end Edit: Here is the time_provided? method: def time_provided?(natural_date_string) date_span = Chronic.parse(natural_date_string, :guess => false) (date_span.last - date_span.first).to_i == 1 end

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  • Phonegap ( + rails ) basic sample app for profile listing, browsing?

    - by Rubytastic
    Im looking for a sample or tutorial to get started with phonegap. Im building a profile site and want the profiles to be listed in phonegap This is the functionality I look for: Basic login and with autentication in our rails app After login a listing of all profiles getting data from the rails app and display this inside phonegap Listing of profiles with basic search What would be the best and quickest way to get this functionality up and running? Is there some best practice on using rails and phonegap? If anyone knows a tutorial or sample app like described above please let know! Thanks!

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  • Error when rendering a partial (RoR) passing the form as a local variable

    - by Dmitriy Likhten
    In my main template I have the following: <%= render :partial => "delivery_date", :collection => @brand.delivery_dates, :locals => {:form => f} %> However when the partial tries to use the form local variable, I get this error Showing app/views/brands/_delivery_date.html.erb where line #2 raised: wrong number of arguments (0 for 1) Extracted source (around line #2): 1: <%= delivery_date.id %> 2: <%= form.text_field :name %> 3: <% new_or_existing = delivery_date.new_record? ? 'new' : 'existing' %> 4: <% prefix = "brand[#{new_or_existing}_delivery_date_attributes][]" %> 5: <% fields_for prefix, delivery_date do |dd_f| %> Does anyone understand what this error means? Actually I want to do <% form.fields_for delivery_date do |dd_f| %> but that fails as well.

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  • (Free) Text editor on Windows with a folder view?

    - by Horace Ho
    I have to stay away from my MacBook and will use Windows for a while. I missed Textmate's folder view when editing my rails projects. Is there an editor on Windows with the folder view? I know there is the E text editor. But I'll save a few bucks if there is a free (cheaper) alternative, as I won't stay in Windows for long ...

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  • Search by ID, no keyword. Tried using :conditions but no result ouput.

    - by Victor
    Using Thinking Sphinx, Rails 2.3.8. I don't have a keyword to search, but I wanna search by shop_id which is indexed. Here's my code: @country = Country.search '', { :with => {:shop_id => params[:shop_id]}, :group_by => 'trip_id', :group_function => :attr, :page => params[:page] } The one above works. But I thought the '' is rather redundant. So I replaced it with :conditions resulting as: @country = Country.search :conditions => { :with => {:shop_id => params[:shop_id]}, :group_by => 'trip_id', :group_function => :attr, :page => params[:page] } But then it gives 0 result. What is the correct code? Thanks.

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  • Apache rails beta site access solution

    - by par
    I'm building an ror site and have been asked by to put a temporary access restriction on it. All that's needed is a general access restriction and common access info which can be emailed to invited beta users. The site is deployed on an apache server (on a mac) using passenger. I'm wondering what solutions there are?

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  • rake tast can't access rails.cache

    - by mark
    Hi I want to call a rake task from a cron job that stores remote weather data in the rails cache. However, I must be doing something pretty wrong here because I cannot find any solution through countless fruitless searches. Say I define and call this task namespace :weather do desc "Store weather from remote source to cache" task :cache do Rails.cache.write('weather_data', Date.today) end end I get the error Anonymous modules have no name to be referenced by Which leads me to believe the rails cache isn't available. Outputting Rails.class from the rake file gives me Module but Rails.cache.class again returns the above error. Do I need to include something here? Am I just hopeless at internet? :) Thanks in advance.

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  • Longest item in array

    - by c00lryguy
    Is there an easier way than below to find the longest item in an array? arr = [ [0,1,2], [0,1,2,3], [0,1,2,3,4], [0,1,2,3] ] longest_row = [] @rows.each { |row| longest_row = row if row.length > longest_row.length } p longest_row # => [0,1,2,3,4]

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  • content_tag_for a collection in Rails?

    - by Nick
    I have a Post model. Posts have many Comments. I want to generate a <ul> element for post.comments using content_tag_for. Ideally, it'd produce <ul id="comments_post_7" class="comments"> ... </ul> where 7 is the ID of the Post. The closest I can get uses <% content-tag-for :ul post, :comments do %> which produces <ul id="comments_post_7" class="post"> ... </ul> which is pretty close, except for the class="post". Using :class => :comments in the content_tag_for yields class="post comments", but I just want class="comments". It seems logical that I'd be able to use something like <% content_tag_for :ul post.comments do %> but, sadly, that yields <ul id="array_2181653100" class="array"> ... </ul> I've searched far and wide. I feel like I'm missing some elegant way to do this. Am I? Because, seriously, <ul id="comments_post_<%= post.id %>" class="comments"> is painful.

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  • Can't store UTF-8 in RDS despite setting up new Parameter Group using Rails on Heroku

    - by Lail
    I'm setting up a new instance of a Rails(2.3.5) app on Heroku using Amazon RDS as the database. I'd like to use UTF-8 for everything. Since RDS isn't UTF-8 by default, I set up a new Parameter Group and switched the database to use that one, basically per this. Seems to have worked: SHOW VARIABLES LIKE '%character%'; character_set_client utf8 character_set_connection utf8 character_set_database utf8 character_set_filesystem binary character_set_results utf8 character_set_server utf8 character_set_system utf8 character_sets_dir /rdsdbbin/mysql-5.1.50.R3/share/mysql/charsets/ Furthermore, I've successfully setup Heroku to use the RDS database. After rake db:migrate, everything looks good: CREATE TABLE `comments` ( `id` int(11) NOT NULL AUTO_INCREMENT, `commentable_id` int(11) DEFAULT NULL, `parent_id` int(11) DEFAULT NULL, `content` text COLLATE utf8_unicode_ci, `child_count` int(11) DEFAULT '0', `created_at` datetime DEFAULT NULL, `updated_at` datetime DEFAULT NULL, PRIMARY KEY (`id`), KEY `commentable_id` (`commentable_id`), KEY `index_comments_on_community_id` (`community_id`), KEY `parent_id` (`parent_id`) ) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci; In the markup, I've included: <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> Also, I've set: production: encoding: utf8 collation: utf8_general_ci ...in the database.yml, though I'm not very confident that anything is being done to honor any of those settings in this case, as Heroku seems to be doing its own config when connecting to RDS. Now, I enter a comment through the form in the app: "Úbe® ƒåiL", but in the database I've got "Úbe® Æ’Ã¥iL" It looks fine when Rails loads it back out of the database and it is rendered to the page, so whatever it is doing one way, it's undoing the other way. If I look at the RDS database in Sequel Pro, it looks fine if I set the encoding to "UTF-8 Unicode via Latin 1". So it seems Latin-1 is sneaking in there somewhere. Somebody must have done this before, right? What am I missing?

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  • Update array in rails action?

    - by Elliot
    Hey guys, I have the following code in an action: @user = @current_user @user.votes[1430]='up' @user.update_attributes(params[:user]) Votes is a string type, there is no default value - I just want to set it for the first time when this action occurs. Unfortunately I get this error: NoMethodError You have a nil object when you didn't expect it! The error occurred while evaluating nil.votes any ideas what I'm doing wrong?

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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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  • Rails error_messages helper

    - by Bob
    This is a very common piece of code <% form_for :blah... do |f| %> <%= f.error_messages %> First name: <%= f.text_field :first_name %><br /> .... <% end %> error_messages is a helper method but I am having a hard time finding the documentation for it, why is that?

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