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• extended permissions

  - by melimoreno

  Hi i'm doing a fb app that update the status box(what's in your mind), i'm using set_status from facebooker .. first i have this error: set_status needs extended permission so i google it and find this: before_filter :ensure_has_status_update .. so i put it in my controller and that solves the problem, but when i try to update the status, all ways redirect me to a fb page that says: You have already granted permissions to this application. so i go to the controller comment before_filter :ensure_has_status_update and then go to my app again and it works.. so i want to do this if (has_status_update == false) ask for permision else update the status i google it for a long time but i can't find an answer..

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• rails, accepts_nested and has_many :through is creating duplicate entries

  - by Sam

  Hi, I have a store model that has many products with a has_many :through relationship. I have this working with accepts_nested_attributes, but the result is that rails is making duplicate associates. I don't have anything special going on it is a very simple app. Any ideas on why duplicates associates are getting created?

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• Can I use a method as a lambda?

  - by NewAlexandria

  I have an interface the defines a group of conditions. it is one of several such interfaces that will live with other models. These conditions will be called by a message queue handler to determine completeness of an alert. All the alert calls will be the same, and so I seek to DRY up the enqueue calls a bit, by abstracting the the conditions into their own methods (i question if methods is the right technique). I think that by doing this I will be able to test each of these conditions. class Loan module AlertTriggers def self.included(base) base.extend LifecycleScopeEnqueues # this isn't right Loan::AlertTriggers::LifecycleScopeEnqueues.instance_method.each do |cond| class << self def self.cond ::AlertHandler.enqueue_alerts( {:trigger => Loan.new}, cond ) end end end end end module LifecycleScopeEnqueues def student_awaiting_cosigner lambda { |interval, send_limit, excluding| excluding ||= '' Loan.awaiting_cosigner. where('loans.id not in (?)', excluding.map(&:id) ). joins(:petitions). where('petitions.updated_at > ?', interval.days.ago). where('petitions.updated_at <= ?', send_limit.days.ago) } end end I've considered alternatives, where each of these methods act like a scope. Down that road, I'm not sure how to have AlertHandler be the source of interval, send_limit, and excluding, which it passes to the block/proc when calling it.

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• Getting a loop when using link_to :back

  - by onildo

  I have this structure for the table course: Search page - Result Page - Edit Page - Show page When i go from result page to a specific course edit page, i edit it, and end up on the show page, but when i hit back, i get a loop from show to edit, and back to show and so on. I want the edit page to back to the result page if it came from there. im using this on both: <%= link_to "Back", :back %>

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• generate 10 UUID records and save it it database in rails

  - by user662503

  I need to create certain number of UUId records (based on the selection of a drop down) and save them in the database. Now I am generating only one unique id. Can this be done in the model in this way? Or do I need to write a helper file for that? def generate_unique_token=(value) self.secret = Base64.encode64(UUIDTools::UUID.random_create)[0..8] end My controller: def create @secretcode = Secretcode.new(params[:secretcode]) @user = User.new(params[:user]) @secretcode.user_id = @user @secretcode.generate_unique_token = params[:secretcode][:secret] if @secretcode.valid? @secretcode.save redirect_to secretcodes_path else render 'new' end end My view page <%= form_for(@secretcode) do |f| %> <%= f.select(:secret, options_for_select([['1',1], ['10',10], ['20',20],['50',50]['100',100]])) %> <%= render 'layouts/error' %> <%=f.label :secret%> <%= f.hidden_field :user %> <%=f.submit :generate %> <% end %>

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• has_many through and saving to join table

  - by Paul

  I have the following: class Invite < ActiveRecord::Base belongs_to :user has_many :invite_recipients has_many :recipients, :through => :invite_recipients end class InviteRecipient < ActiveRecord::Base belongs_to :invite belongs_to :user_comm validates_associated :user_comm, :invite validates_uniqueness_of :user_comm_id, :scope => :invite_id end class UserComm < ActiveRecord::Base end I'd like to create a method for Invite with invite_text and a list of UserComms as the variables and then have it create a new invite with the following validations: 1. All UserComms are unique 2. The invite isn't saved unless all the associated InviteRecipients are saved as well (in other words, the invite isn't valid unless all the created InviteRecipients are valid) I'm not familiar with how to create model functions. Moreover, when I try something like this: i = Invite.new(:invite_text => 'come join') ir1 = InviteRecipient.new(:invite => i, :user_comm => user_comm1) ir2 = InviteRecipient.new(:invite => i, :user_comm => user_comm2) i.invite_recipients = [uc1, uc2] i.save! I get: SystemStackError: stack level too deep

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• Create rails record from two ids

  - by Michael Luby

  The functionality I'm trying to build allows Users to Visit a Restaurant. I have Users, Locations, and Restaurants models. Locations have many Restaurants. I've created a Visits model with user_id and restaurant_id attributes, and a visits_controller with create and destroy methods. Thing is, I can't create an actual Visit record. Any thoughts on how I can accomplish this? Or am I going about it the wrong way. Here's the code: Model: class Visit < ActiveRecord::Base attr_accessible :restaurant_id, :user_id belongs_to :user belongs_to :restaurant end View: <% @restaurants.each do |restaurant| %> <%= link_to 'Visit', location_restaurant_visits_path(current_user.id, restaurant.id), method: :create %> <% @visit = Visit.find_by_user_id_and_restaurant_id(current_user.id, restaurant.id) %> <%= @visit != nil ? "true" : "false" %> <% end %> Controller: class VisitsController < ApplicationController before_filter :find_restaurant before_filter :find_user def create @visit = Visit.create(params[:user_id => @user.id, :restaurant_id => @restaurant.id]) respond_to do |format| if @visit.save format.html { redirect_to location_restaurants_path(@location), notice: 'Visit created.' } format.json { render json: @visit, status: :created, location: @visit } else format.html { render action: "new" } format.json { render json: @visit.errors, status: :unprocessable_entity } end end end def destroy @visit = Visit.find(params[:user_id => @user.id, :restaurant_id => @restaurant.id]) @restaurant.destroy respond_to do |format| format.html { redirect_to location_restaurants_path(@restaurant.location_id), notice: 'Unvisited.' } format.json { head :no_content } end end private def find_restaurant @restaurant = Restaurant.find(params[:restaurant_id]) end def find_user @user = current_user end end

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• Rails 3 many-to-many query on includes or joins

  - by Myat

  I have three models User, Activity and ActivityRecord. class User < ActiveRecord::Base # Include default devise modules. Others available are: # :token_authenticatable, :confirmable, # :lockable, :timeoutable and :omniauthable devise :database_authenticatable, :registerable, :recoverable, :rememberable, :trackable, :validatable # Setup accessible (or protected) attributes for your model attr_accessible :first_name, :last_name, :email, :gender, :password, :password_confirmation, :remember_me # attr_accessible :title, :body has_many :activities has_many :activity_records , :through=> :activities end class Activity < ActiveRecord::Base attr_accessible :point, :title belongs_to :user has_many :activity_records end class ActivityRecord < ActiveRecord::Base attr_accessible :activity_id belongs_to :activity scope :today, lambda { where("DATE(#{'activity_records'}.created_at) = '#{Date.today.to_s(:db)}'")} end I would like to query all activities for a user together with the count for their respective activity records for today. For example, after querying and converting to json format, I would like to have something like below [ { id: 23 title: "jogging", point: "5", today_activity_records_count: 1, }, { id: 12 title: "diet dinner", point: "2", today_activity_records_count: 0, }, ] Please kindly guide me how I can achieve that. Thanks

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• In Rails, how do I find records by "not equal"

  - by Mazonowicz

  I'm building an application that contains a bunch of projects that are at various stages, and I need to list the completed projects, or the projects that are at various other stages. So to list the completed projects, I name a scope; named_scope :current, :conditions => { :current_stage => "Completed" } and use; @projects = Project.current in my controller. But I how do I find all the projects at other stages? I thought it would involve != but I can't get that to work. Any pointers very much appreciated. Thanks a lot

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• Rails nested has_many association, how to get, say, last 5 of all children?

  - by Randuin

  Let's say that Post has_many :comments and that Comment has_many :ratings How can I grab the last 5 comment ratings for each Post? I've been thinking of just looping through comment for each post but that wouldn't solve the Last 5 part.

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• How to detect if an element exists in Watir

  - by Rijksband

  Hi, I'm relatively new to Watir but can find no good documentation (examples) regarding how to check if an element exists. There are the API specs, of course, but these make precious little sense to me if I don't find an example. I've tried both combinations but nothing seems to work... if browser.image (:src "/media/images/icons/reviewertools/editreview.jpg").exists then... if browser.image (:src "/media/images/icons/reviewertools/editreview.jpg").exists? then... If anyone has a concrete suggestion as per how to implement this, please help! Thanks!

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• Notify by email when passenger error occurs

  - by foresth

  Hello, is it possible to send notification emails when passenger error occurs? Something similar to the email sending by exception notifier when there is an error in Rails app. I wonder because now we have no way to find out if someone hits an unexpected app spawner or other error (like memory limit etc.). Thank you!

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• Rails routing question: how to pass a hash property to a generated resource?

  - by SergioB

  say I have this on my routes.rb: resources :accounts which gives me, among other things: new_account GET /account/new I need to generate this (for example) "/account/new#test" How do you pass the "#test" to new_account_path() ?

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• Rails and a development domain

  - by Adam

  I'm trying to use http://ls1.bigseapreview.com as a domain for a Rails project. The problem is it doesn't seem to be correctly mapping any routing apart from the home page. I have added /about but you can see that you will just get a 404, but it works locally. What do I have to do to fix this?

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• Problem building relationships between models

  - by Brian Roisentul

  Until now, I've been using acts_as_taggable_on plugin for tagging announcements. That plugin creates the following tables: taggings: relates tags and announcements table(for the tagged item, it has a field called taggable_id, which I rename to "announcement_id" for what I'll explain below). tags: has the tag ids and names. The other day, I discovered that I had no way of getting the announcements tagged with a certain tag, but doing Announcement.tagged_with(tag_name), and I don't want to search by name, but for id. So, as I'm using almost nothing of the functionality in that plugin, I decided to create the models for taggings and tags tables, to accomplish this: Announcement.tags. The models' relationships look as following: class Tagging < ActiveRecord::Base belongs_to :announcement belongs_to :tag end class Tag < ActiveRecord::Base has_many :announcements, :through => :taggings end class Announcement < ActiveRecord::Base has_many :tags, :through => :taggings Why can't I execute the command Announcement.tags? Because when I try, I get undefined method `tags'

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• Multiple controllers with a single model

  - by Eric K

  I'm setting up a directory application for which I need to have two separate interfaces for the same Users table. Basically, administrators use the Users controller and views to list, edit, and add users, while non-admins need a separate interface which lists users in a completely different manner. To do this, would I be able to just set up another controller with different views but which accesses the Users model? Sorry if this is a simple question, but I've had a hard time finding how to do this.

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• How can I connect two DB tables using Rails?

  - by jfedick

  I have two DB tables that when one field is updated, a corresponding field needs to be updated in another DB table with that same information. How can I connect those fields (and tables) together using the Rails framework?

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• How do I use define_method to create class methods?

  - by Chinasaur

  This is useful if you are trying to create class methods metaprogramatically: def self.create_methods(method_name) # To create instance methods: define_method method_name do ... end # To create class methods that refer to the args on create_methods: ??? end My answer to follow...

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• how to make a generator in rails?

  - by piemesons

  How to make a generator in rails?

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• Order records from multiple models by attribute

  - by Labuschin

  Given the three models “message”, “profile” and “comment” i want to merge them into one list, ordered by their common attribute “created_at”. I want to accomplish something like the project overview in Basecamp - see 3) here: http://basecamphq.com/tour#overview

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• Rails, Is there any way in my view use link_to to grab the contents of a specific field and place it

  - by Datatec

  Basically I am trying to capture the value of the form field before it is saved to the database. Then I intend to use that value in my controller to update a specific field in the database, using @taskforms.update_attribute('notes', $notes) I need to do this because I know of no other way to update that that does not require the full record to be validated.

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• Return user to original page after logging in (rails session mgmt)

  - by keruilin

  I'm looking for some general guidance as to how to return a user back to the original page they were viewing after trying to log-in. The way I have the site setup now is that if a user visits the Store page, for example, and then clicks the login button in the upper right, the user is returned to the default landing page. Any help would be greatly appreciated!

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• No route matches [PUT] error in active_admin

  - by Alex

  in active_admin partials created a form input: <%= semantic_nested_form_for @item, :url => admin_items_path(@item) do |f| %> <fieldset class="inputs"> <ol> <%= f.input :category %></br> <%= f.input :title %> <%= f.input :photo1 %> <%= f.input :photo2 %> </ol> </fieldset> <%= f.fields_for :ItemColors do |i| %> <fieldset class="inputs"> <ol> <%= i.input :DetailColor %> <%= i.input :size, :input_html => { :size => "10" } %> <%= i.link_to_remove "remove" %> </ol> </fieldset> <% end %> <%= f.link_to_add "add", :ItemColors %> <%= f.actions %> <% end %> to create a new Item okay creates and throws On the New Item, but if I do update an existing item is routed to an error occurs while such a path exists: No route matches [PUT] "/admin/items.150" #150 is item_id rake routes: batch_action_admin_items POST /admin/items/batch_action(.:format) admin/items#batch_action admin_items GET /admin/items(.:format) admin/items#index POST /admin/items(.:format) admin/items#create new_admin_item GET /admin/items/new(.:format) admin/items#new edit_admin_item GET /admin/items/:id/edit(.:format) admin/items#edit admin_item GET /admin/items/:id(.:format) admin/items#show PUT /admin/items/:id(.:format) admin/items#update DELETE /admin/items/:id(.:format) admin/items#destroy help to solve this problem UPD I found the error, but not yet understood how to fix it the upgrade is a request: PUT "/admin/items" but should: PUT "/admin/items/some_id" any ideas?

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• date in future for Rails

  - by Adnan

  Hello, I am trying to make a validation that will validate that the entered date is in future and that the selected date is in the next 7 days. In order to validate if the date is in future I use; valid_until.future? and this one works fine, but to make a validation to check if the date selected is withing 7 days from now?

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• Rails 3 - Ideal way to set title of pages

  - by akfalcon

  Whats the proper way to set the page title in rails 3. Currently I'm doing the following: app/views/layouts/application.html .... <%= render_title % <%= csrf_meta_tag % .... app/helpers/application_helper.rb ... def render_title return @title if defined?(@title) "Generic Page Title" end ... app/controllers/some_controller.rb ... def show @title = "some custom page title" ... end ... Is there another/better way of doing the above?

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