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  • Calculate difference in days ActiveSupport:TimeWithZone in the most "rubyish" style?

    - by Nick
    I have a feeling someone is going to point me to another question that answers this but I've been searching with no luck over this simple issue. I have a Activerecord with a datetime property. It returns as an ActiveSupport:TimeWithZone. I know I can't compare that to DateTime.now because that doesn't include a zone so I need to use Time.zone. Makes sense. What I'm wondering is stylewise is there a "cleaner" way to do this than subtracting and dividing the result by 86400? Here's what I do: ((Time.zone.now - myActiveRecord.visit_date)/86400).to_i Works but seems un-rubyish and I feel like I'm missing something. Should I be casting, comparing or converting some other route or is this really the typical way to do this in rails? Appreciate any tips or a link to a question that already covers this. Thank you

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  • How to create a MySQL query for time based elements with a 'safe window'?

    - by pj4533
    I am no SQL expert, far from it. I am writing a Rails application, and I am new at that as well. I come from a desktop programming background. My application has a table of data, one of the columns is the time at which the data was logged. I want to create a query with a 'safe window' around EACH row. By that I mean, it returns the first row, then for X minutes (based on the timelogged column) it won't return any data, once X minutes is up, it will return the next row. For example: ID | TimeLogged 1 | 3/5/2010 12:01:01 2 | 3/5/2010 12:01:50 3 | 3/5/2010 12:02:03 4 | 3/5/2010 12:10:30 5 | 3/5/2010 01:30:03 6 | 3/5/2010 01:31:05 With a 'safe window' of 5 minutes I want to create a query to return: 1 | 3/5/2010 12:01:01 4 | 3/5/2010 12:10:30 5 | 3/5/2010 01:30:03 (It skipped the 12:01:50 and 12:02:03 items because they occurred within 5 minutes of the first item.) Another example, with a 'safe window' of 15 minutes I want to return: 1 | 3/5/2010 12:01:01 5 | 3/5/2010 01:30:03 Perhaps I have to just return all data and parse it myself?

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  • Apache's AuthDigestDomain and Rails Distributed Asset Hosts

    - by Jared
    I've got a server I'm in the process of setting up and I'm running into an Apache configuration problem that I can not get around. I've got Apache 2.2 and Passenger serving a Rails app with distributed asset hosting. This is the feature of Rails that lets you serve your static assets from assets0.example.com, assets1, assets2, and so on. The site needs to be passworded until launch. I've set up HTTP authentication on the site using Apache's mod_auth_digest. In my configuration I'm attempting to use the AuthDigestDomain directive to allow access to each of the asset URLs. The problem is, it doesn't seem to be working. I get the initial prompt for the password when I load the page, but then the first time it loads an asset from one of the asset URLs, I get prompted a 2nd, 3rd, or 4th time. In some browsers, I get prompted for every single resource on the page. I'm hoping that this is only a problem of how I'm specifying my directives and not a limitation of authorization in Apache itself. See the edited auth section below: <Location /> AuthType Digest AuthName "Restricted Site" AuthUserFile /etc/httpd/passwd/passwords AuthGroupFile /dev/null AuthDigestDomain / http://assets0.example.com/ http://assets1.example.com/ http://assets2.example.com/ http://assets3.example.com/ require valid-user order deny,allow allow from all </Location>

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  • retrieving data from memcache

    - by Adnan
    Hello, I am starting to learn the benefits of memcache, and would like to implement it on my project. I have understood most of it, such as how data can be retrieved by a key and so on. Now I get it that I can put a post with all of its details in memcache and call the key POST:123, that is OK, and I can do it for each post. But how to deal with the case when I query the table posts to get the list of all posts with their titles. Can this be done with memcache, or should this always be queried from the table?

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  • Rspec: "array.should == another_array" but without concern for order

    - by nicholaides
    I often want to compare arrays and make sure that they contain the same elements, in any order. IS there a consise way to do this in RSpec? Here are methods that aren't acceptable: #to_set For example: array.to_set.should == another_array.to_set This fails when the arrays contain duplicate items. #sort For example: array.sort.should == another_array.sort This fails when the arrays elements don't implement #<=> #size and #to_set For example: array.to_set.should == another_array.to_set array.size.should == another_array.size This would work, but there's got to be a better way.

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  • paperclip plugin not support for I18n

    - by user354413
    I've added I18n support for error messages: Now you can define translations for the errors messages in e.g. your YAML locale file: en: paperclip: errors: attachment: size: "Invalid file size" content_type: "Unsupported content type" presence: "Cant' be blank" when I use validates_attachemnt_zie :avatar how to get error message?

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  • How to balance load in a Apache + Mongrel application

    - by Will
    I was wondering if someone can explain how can a rails application be balanced. Two questions: Does it even help having separate rails applications reading from the same database in the same dedicated server? I understand Apache can balance load installing some extra modules? am i right? how can we accomplish this? (please provide explanation for dummies)

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  • How can I dynamically define the named route in a :partial in rails?

    - by Angela
    I have the following partial. It can be called from three different times in a view as follows: <%= render :partial => "contact_event", :collection => @contacts, :locals => {:event => email} %> Second time: <%= render :partial => "contact_event", :collection => @contacts, :locals => {:event => call} %> Third time: <%= render :partial => "contact_event", :collection => @contacts, :locals => {:event => letter} %> In each instance, call, email, letter refer to a specific instance of a Model Call, Email, or Letter. Here is the content of the partial "contact_event": <%= link_to_remote "Skip #{event} Remote", :url => skip_contact_email_url(contact_event, event), :update => "update-area-#{contact_event.id}-#{event.id}" %> <span id='update-area-<%="#{contact_event.id}-#{event.id}"%>'> </span> </p> My challenge: skip_contact_email_url only works when the event refers to an email. How can I dynamically define skip_contact_email_url to be skip_contact_letter_url if the local variable is letter? Even better, how can I have a single named route that would do the appropriate action?

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  • How can I dynamically call the named route in a :partial in rails?

    - by Angela
    I have the following partial. It can be called from three different times in a view as follows: <%= render :partial => "contact_event", :collection => @contacts, :locals => {:event => email} %> Second time: <%= render :partial => "contact_event", :collection => @contacts, :locals => {:event => call} %> Third time: <%= render :partial => "contact_event", :collection => @contacts, :locals => {:event => letter} %> In each instance, call, email, letter refer to a specific instance of a Model Call, Email, or Letter. Here is what I tried to do and conceptually what I'd like to do: assign the route based on the class name that has been passed to the :event from the :partial. What I did was create what the actual url should be. The 'text' of it is correct, but doesn't seem to recognize it as a named route. <% url = "skip_contact_#{event.class.name.tableize.singularize}_url" % <%= link_to_remote "Skip #{url} Remote", :url = skip_contact_email_url(contact_event, event), :update = "update-area-#{contact_event.id}-#{event.id}" % ' My challenge: skip_contact_email_url only works when the event refers to an email. How can I dynamically define skip_contact_email_url to be skip_contact_letter_url if the local variable is letter? Even better, how can I have a single named route that would do the appropriate action?

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  • This is right way for database?

    - by ciss
    Hello, i have some issue with database. Okay, i have two models - Page and Item. Page for displaying some content. Item - this is item discription. So, i work on small ecommerce shop. Okay, all of this models can have some comments. So, this is my Comments model at this moment: Comments - string : id text : body integer : page_id integer : item_id So when some one add comment to page - page_id will be filled with current Page id. And if some one add comment to item - item_id will be filled. Okay, i know what the best way is to create STI or Polymorphic assoc, but does i really need this way for my situation? Sorry for my bad english, i'm from Russia.=)

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  • Sorting an array of structs

    - by keruilin
    I have an array of structs called leaders. The struct class looks like this, for contextual info: class Leader < Struct.new(:rank, :user); end Two questions: How do I sort the array of structs by rank? How do I sort the array of structs by rank and by user.created_at?

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  • Rails Routes :requirements

    - by Chris Kilmer
    I want to set a route :requirements on an array that verifies a particular parameter is included in an array: atypes = [:culture, :personality, :communication] map.with_options(:path_prefix = ':atype', :requirements = {:atype = atypes.include?(:atype)}) do |assessment| ... end I haven't been able to find any documentation on how to accomplish this. Any help would be appreciated.

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  • Import Excel into Rails app

    - by Jack
    Hi, I am creating a small rails app for personal use and would like to be able to upload excel files to later be validated and added to the database. I had this working previously with csv files, but this has since become impractical. Does anyone know of a tutorial for using the roo or spreadsheet gem to upload the file, display the contents to the user and then add to the database (after validating)? I know this is quite specific, but I want to work through this step by step. All I have so far is an 'import' view: <% form_for :dump, :url=>{:controller=>"students", :action=>"student_import"}, :html => { :multipart => true } do |f| -%> Select an Excel File : <%= f.file_field :excel_file -%> <%= submit_tag 'Submit' -%> <% end -%> But have no idea how to access this uploaded file in the controller. Any suggestions/help would be welcomed. Thanks

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  • ActiveRecord, has_many, polymorphic and STI

    - by leomayleomay
    I've came into a problem while working with AR and polymorphic, here's the description, class Base < ActiveRecord::Base; end class Subscription < Base set_table_name :subscriptions has_many :posts, :as => :subscriptable end class Post < ActiveRecord::Base belongs_to :subscriptable, :polymorphic => true end in the console, >> s = Subscription.create(:name => 'test') >> s.posts.create(:name => 'foo', :body => 'bar') and it created a Post like: #<Post id: 1, name: "foo", body: "bar", subscriptable_type: "Base", subscriptable_id: 1, created_at: "2010-05-10 12:30:10", updated_at: "2010-05-10 12:30:10"> the subscriptable_type is Base but Subscription, anybody can give me a hand on this?

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  • Rails show view of one model with form for adding one child - nested attributes vs seperate controll

    - by SWR
    I have a basic two tiered model structure: Articles - Comments with one Article having many comments. What is the best way to add a "Add a comment" form to the bottom of the Articles show page? nested_attributes is overkill as I don't want to be able to edit all of the comments on the page, just to add one more. Is the best way even with Rails 2.3 still to make a separate controller and embed a form_for pointing to the other controller into the Articles show view? If so, how do I get validation errors to return to the article display page? I don't want to make a separate comment page/view... thanks

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  • No action responded to search

    - by gazza58
    i have defined a method called 'search' in my RecipesController which is not private. in routes.rb i have the following: map.connect 'recipes/search', :controller => :recipes, :action => :search i get the following error: No action responded to search. Actions: ... where my method 'search' does not appear in the actions list. if i change the method name from 'search' to 'searchthings' and the action in routes to 'searchthings' then this seems to work. what am i missing here?

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  • Double join with habtm in ActiveRecord

    - by Daniel Huckstep
    I have a weird situation involving the need of a double inner join. I have tried the query I need, I just don't know how to make rails do it. The Data Account (has_many :sites) Site (habtm :users, belongs_to :account) User (habtm :sites) Ignore that they are habtm or whatever, I can make them habtm or has_many :through. I want to be able to do @user.accounts or @account.users Then of course I should be able to do @user.accounts < @some_other_account And then have @user.sites include all the sites from @some_other_account. I've fiddled with habtm and has_many :through but can't get it to do what I want. Basically I need to end up with a query like this (copied from phpmyadmin. Tested and works): SELECT accounts.* FROM accounts INNER JOIN sites ON sites.account_id = accounts.id INNER JOIN user_sites ON sites.id = user_sites.site_id WHERE user_sites.user_id = 2 Can I do this? Is it even a good idea to have this double join? I am assuming it would work better if users had the association with accounts to begin with, and then worry about getting @user.sites instead, but it works better for many other things if it is kept the way it is (users <- sites).

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  • Find and sort by number of ocurrences of tag with Active Admin and act_as_taggable_on

    - by nunopolonia
    I'm using act_as_taggable_on and Active Admin on a Rails project. In that project there are Posts and each Post has Tags. I want to show a list of Tags in Active Admin and the number of ocurrences of each one. The way I found to do this was: index do column :name column :ocurrences do |tag| ocurrences = Post.tag_counts.find(tag.id).count end default_actions end Which will search the Tag List every time for every Post, which performance wise looks really bad. I would also like to be able to sort the tags by ocurrence. Any idea of how I can do it?

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  • How do I pass object values with render :action => 'new'

    - by PlanetMaster
    Hi, In an app I have the following: def new @property = Property.new(:country_id => 1, :user_id => current_user.id, :status_id => 'draft') end def create @property = Property.new(params[:property]) if @property.save flash[:success] = t('The_property_is_successfully_created') redirect_to myimmonatie_url else flash.now[:error]=t("The_property_could_not_be_created") render :action => 'new' end end When an error accors, the line render :action = 'new' gets executed, but the my form gives an error: user blank country blank These cannot be blank (defined in model), meaning this code: @property = Property.new(:country_id => 1, :user_id => current_user.id, :status_id => 'draft') is not executed anymore. What is the reason and solution? Thanks!

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  • Rails - dynamically adding to sortable_element

    - by tiny_clanger
    Am adding to a sortable list using Ajax, and to get the Scriptaculous effects to kick in after the add, the only way I have found is by re-executing sortable_element. Can anyone suggest a better way of doing this, at the complete code is a hack: <%= link_to_remote "Add", :url = { :controller = "pages", :action = "add_fragment", :pid = pid, :index = index }, :complete = "eval(decodeURIComponent(#{sortable_element 'frag_list', :url = sort_frag_pages_path, :complete = visual_effect(:highlight, 'frag_list'), :handle = 'handle'}).gsub('//',''));" %

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  • Rails log management

    - by ambertch
    I'm starting to get overwhelmed using VI to search through my logs to chase down login errors and would like a better solution. I know Newrelic is highly recommended, though was wondering if there was something free I could try for the short term. Thanks!

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