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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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  • 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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  • Highlighting the current page in rails, only works for some pages

    - by raphael_turtle
    I've used this tutorial to highlight the current page in the menu. I have a pages controller with a few static pages, for the home page I simply have def home @title = 'Home and similar for contact pages etc. Then in my main layout file I have <body class="<%= @title %>"> and this works fine to set the correct css, but how do I set @title for my other controllers where there's more than one action?

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  • Rails Association Question...

    - by keruilin
    I have three models: User, RaceWeek, Race # Current associations: User has_many race_weeks; RaceWeek belongs to user; RaceWeek has many races; Race belongs to RaceWeek # So the user_id is a foreign key in RaceWeek and race_week_id is a foreign key in Race. # fastest_time is an attribute of the Race model. # QUESTION: What's the optimal way to retrieve a list of users who have the top X fastest race times?

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  • Rails 2.3: using another models named_scope inside another named_scope

    - by mustafi
    Hi Let's say I have two models like so: class Comment < ActiveRecord::Base belongs_to :user named_scope :about_x :conditions => "comments.text like '%x%')" end class User < ActiveRecord::Base has_many :comments end How can I add a named_scope to the user model like so class User < ActiveRecord::Base has_many :comments named_scope :comments_about_x, :includes => :comments, :comments_named_scope => :about_x end Which allows me to do all_user_comments_about_x = User.comments_about_x The reasoning is I often need to use the comment models about_x named scope logic but I don't want to have "comments.text like '%x%')" scattered around my code. I hope this make sense :) Thank you

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  • Rails date format in form field

    - by Jack
    Hello I'd like my dates in the mm/dd/year format in text fields. However, they currently displays as 2010-03-26. Is there a global setting I can set to change this? I tried the following, which seems to update the .to_s method, but form fields stay the same. ActiveSupport::CoreExtensions::Date::Conversions::DATE_FORMATS.merge!(:default => '%m/%d/%Y') Thanks

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  • Replace umlaute (äüö) for SEO link in rails - best way

    - by ole_berlin
    Hi, I'm using the permalink_fu plugin to create permalinks from titles. My problem is: If the title contains german characters, they are just replaced with '_'. What I need is something that replaces ä with ae ü with ue ö with oe I fount String.tr but the problem here is that it replaces 1 character with 1 replacement, so it would work for replacing é with e ø with o etc. Does anyone have a nice and clean solution for that? Thanks

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  • Rails valiation among a three model relationship

    - by Andrew
    I'm working on a three model relationship with one aspect that I'm not sure how to approach. Here's the basic relationship: class Taxonomy has_many :terms # attribute: `inclusive`, default => false end class Term belongs_to :taxonomy has_and_belongs_to_many :photos end class Photo has_and_belongs_to_many :terms end This is pretty straightforward stuff except for one thing: A Taxonomy can be either 'Inclusive' or 'Exclusive'. Exclusive means the terms are mutually exclusive, Inclusive means they're not. So, if a Taxonomy is exclusive ie. taxonomy.inclusive = false, then there can only be one term from that taxonomy attached to a given photo. Now, I can handle this on the client-side without a problem, but I am not quite sure how to set up a validation on Photos (or somewhere else) that says basically: "validate that no more than one term from an exclusive taxonomy is associated with this record." Any ideas on how to do that?

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  • Rails: attribute_changed?

    - by Sam
    I have a model that has an amount and I'm tracking to see if this amount is changed with a Model.amount_changed? with a before_save which works fine but when I check to see amount_was and amount_change? it only returns the updated amount not the previous amount. And all this is happening before it is save. It knows when the attribute is changed but it will not return the old value. Ideas?

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  • Rails: User specific sequential column

    - by Alex Marchant
    I have an inventory system, where a User has many inventory. We have a barcode column which needs to be sequential for each user. I run into a problem however when doing bulk association building. I end up getting several inventories for a user with the same barcode. For example: Inventory Table: id | user_id | barcode 1 | 1 | 1 2 | 1 | 2 3 | 2 | 1 4 | 2 | 2 5 | 1 | 3 In the Inventory model I have before_validation :assign_barcode, on: :create def assign_barcode self.barcode = (user.inventories.order(barcode: :desc).first.try(:barcode) || 0) + 1 end It generally works, but ran into a problem when seeding my db: (1..5).each do user.inventories.build(...) end user.save I end up with a bunch of inventories for user that have the same barcode. How can I ensure that inventories have unique barcodes even when adding inventories in bulk?

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  • Rails 2.3 using another model's named_scope or alternative

    - by mustafi
    Hi Let's say I have two models like so: class Comment < ActiveRecord::Base belongs_to :user named_scope :about_x :conditions => "comments.text like '%x%')" end class User < ActiveRecord::Base has_many :comments end I would like to use the models so that I can return all the users and all comments with text like '%x%' all_user_comments_about_x = User.comments.about_x How to proceed? Thank you

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  • Rails: update_attribut wihout validation - like object.save(false)

    - by Sam
    I trying to update a model on a callback but the validation is causing some havic and I'm controller the material getting saved so I'm looking for way to do update attributes without a validation and I would like to keep it on the update method not on validations for example :conditions = Something like this? easy_address.update_attributes(some_attributes)(false)

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  • Beginning with shell scripting

    - by Kevin Wyman
    I am fresh into Ubuntu and one of my goals is shell scripting for personal (and maybe public) use. I'm a novice, though I do understand some of the basics (e.g. what a variable, string, loop, etc... is) but to get the most of scripting I need to learn in-depth. I figure the best way to do that is to jump right into scripting and ask questions only pertinent to the stage I am at in my attempted script. Scenario: I have edited my sudoers file to allow my non-root user to run sudo commands without being prompted for a password. Question: In vim, what would be the best code to use for a function that checks whether this condition is [true], If not, prompt the user if they want the script to edit and save the sudoers file to make this condition [true]? Layout - If condition is true, carry-on with rest of script. If condition is not true, the script silently edits/adds the line: %sudo ALL=(ALL:ALL) NOPASSWD: ALL in the sudoers file, saves and then continues on with the next part of the script. Any help with this would be greatly appreciated and assist me in my journey to writing shell scripts.

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  • How to compile a gvim from source using the latest version

    - by Kit Ho
    I'm using Ubuntu. I performed the following commands in the vim source folder: sudo apt-get build-dep vim ./configure --with-features=huge --enable-gui=gtk2 --enable-rubyinterp=yes --enable-pythoninterp=yes make sudo make install I have found that related posts but fail in Ubuntu 13.04 Update: sorry for not providing enough error msg here is the error after do the .configure checking --enable-gui argument... no GUI support How can i let the system to find the GUI library? I have try to do apt-get build-dep vim the gui lib should be included, but no luck what else can i do? i have also tried --enable-gui=<auto, gtk, gtk2, gnome2> all of them show the same error no GUI support...

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  • Odd behavior on Shift-{Esc,Fx}

    - by ??????? ???????????
    Sometimes, when changing between the modes in Vim, I forget to take my finger off the Shift key. This innocent mistake is probably part of the luggage carried over from other terminals, but I have never seen my input treated this way. After changing from command mode to input mode, if I hit the Esc key while the Shift key is down, Vim will display <9b (Control Sequence Introducer) instead of switching to the command mode. At least two work-arounds to this intended behavior are available on the mintty site (faq, issue). " Avoiding escape timeout issues in vim :let &t_ti.="\e[?7727h" :let &t_te.="\e[?7727l" :noremap <EscO[ <Esc :noremap! <EscO[ <Esc " Remap escape :imap <special <CSI <ESC My question is about the syntax and the meaning of the first solution. From the looks of it, it seems like t_ti is being assigned a literal value, but I'm not sure why the "c address-of" operator is required. I'm also not sure why there are two noremap statements.

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  • Search and replace global modifier

    - by mrucci
    Is there any reason why non-global/first-occurrence substitution is the default in many text editing programs (vim, sed, perl, etc.)? I am talking about the /g flag of search and replace commands like: :s/pan/focaccia/g # in vim sed 's/sfortuna/fortuna/g' # with sed that will substitute every occurrence of the search pattern with the replacement string. After (not too) many years of vim and sed usage I still did not find any use case for non-global substitutions. Is there some valid historical reason? Or it is because it is? Thanks.

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  • Basic Facts About Ruby on Rails Programming Language

    The saying "Feels lighter, more agile, and easier to understand" has become the definition for ruby on rails. Many people still don't know that ror is otherwise called as ruby on rails. Let's learn more about the basic facts of ruby on rails, the lightening fast programming language today.

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  • How do I serve Ruby on Rails applications on Windows Server 2008?

    - by Adam Lassek
    I have spent the last several hours attempting to get Ruby on Rails running on a Windows server with no luck. At first I tried configuring a test application through IIS7's FastCGI support, but the documentation for this is not very good. I've been following this blog entry, and this one, and this one, and this one but everything seems to be missing major steps, or are out of date. And every article keeps linking back to this Howto from rubyonrails.org that doesn't exist. The sense that I'm getting is that even if I manage to make this work, IIS' FastCGI isn't good enough to use in a production environment anyway. So it looks like my best bet is to setup a reverse proxy in IIS that points to Apache & Mongrel/Passenger using ARR and UrlRewrite. Is there anybody else out there stuck deploying a Rails application on a Windows stack? Am I on the right track? Can you give me a better idea of how to configure this? I believe Plesk already installed an instance of Apache/Tomcat running on this server using a different port, so adding another virtual host shouldn't be difficult; the hardest part seems to be setting up the reverse proxy through IIS.

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  • Basic Facts About Ruby on Rails Programming Language

    The saying "Feels lighter, more agile, and easier to understand" has become the definition for ruby on rails. Many people still don't know that ror is otherwise called as ruby on rails. Let's learn more about the basic facts of ruby on rails, the lightening fast programming language today.

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  • VIM is great for text. Is there, too, an efficient, mouseless way to manipulate files on OS X?

    - by Dokkat
    I am having trouble navigating through files on OS X. That is, creating files, copying, moving, and so on. I am currently using the Finder, but the act of clicking with the mouse is not very efficient. Acessing a deep folder takes a considerable amount of time and you'll have to know it's entire path. When I try to use the command line it is even worse. Going to a folder requires at least typing it's entire path with the 'cd' command; and, when you are there, you don't have full control over it. For example, how would you move 3 specific files to another folder? Some text editors offer a 'fuzzy search' function that allows a very fast form of jumping through files. What is a fast, efficient way to navigate through files on OS X?

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  • what receives an ajax call?

    - by jbcolmenares
    I'm making a site which should (a) take information from the user in the form of files and forms, (b) take that data to the server to be run on a C application, and (c) take the result back and show it to the user. I was told to look for AJAX for the communication with the server. BTW, I'm using rails. I'm trying to understand how AJAX works. From what I understand so far, with rails is pretty easy to make the call. What I can't figure out is, what waits for that call? what process the call? If I understand correctly, with rails I could make a function in ruby and make it so it's called through AJAX, which means -or so I understand- that it gets executed on the server. If I were using PHP, would I need to make an http server to wait for the AJAX calls? I just don't find information about what waits for the call, and that information is processed. Any links, comments or books are welcome!

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  • Basics of Website development [closed]

    - by user975234
    I have read this post: What should every programmer know about web development? but I have some more questions... I will be developing a content related website very soon and I am confused about some technology stuff. I am thinking about developing the site using ruby on rails. So when I'll be buying hosting, do I need to ask for something special? Like for example, we need to specify what kind of hosting we need, windows or linux. So for ruby on rails do I need some extra facilities from the hosting provider? Is ruby on rails a good choice for a large content related website? This may be a bit stupid but how do I choose my backend, scripting languages etc? Thing is I am really new to website development. And the flow of making websites is not clear. Any links will be helpful. EDIT: I know this question has been voted as non constructive. But if any one still has some precise knowledge about how the flow of website development goes, please comment your views.. That will be helpful!

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