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  • Is it valid to include view code in Model?

    - by Shreekumar S
    Guys I'm new to RoR and MVC. I've a model which deals with loan beneficiary's data. To access the structured data (including small piece of HTML data) I created a method like this class Beneficiary < ActiveRecord::Base   def info   "#{name}</br>#{age},#{sex}</br><b>Address :</b>#{address}"   end end And in the view, I'm using this info something like this <%= @b.info.html_safe %> were, b is an instance of Beneficiary class It's working fine for me. I just want to know that, Am i violating the MVC rule here? Is it valid to include view code in Model?

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  • How to update existing record if the one being saved has the same key?

    - by Pavel Shved
    MySQL has a very nice option for INSERT statement, which is particularly helpful for join tables without the id column. It inserts a record, but, instead of throwing an error if its key clashed with the existing one, that record is updated. Here's an example: INSERT INTO table (key1,key2,data) VALUES (1,2,3) ON DUPLICATE KEY UPDATE c=3; How to achieve the same with ActiveRecord? The code looks like this: class Model < ActiveRecord::Base belongs_to :key1 belongs_to :key2 end record = Model.new record.key1 = key1 record.key2 = key2 record.data = 'new data' record.WHAT? #Inserts or updates `data` for the existing record

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  • validation before ajax form submission

    - by ZX12R
    How do i introduce validation before remote_form_for submits? I have javascript function called validateForm(). I am able to call it before the AJAX request process. I tried to use return false and event.preventDefault. But there seems to be no effect. Here is what my code looks like <% remote_form_for :customer, :update =>"uxScreenLoaderDiv", :url => {:action => "login", :controller => "site"}, :html => {:id => "uxLoginForm"}, :onsubmit => "validateForm(event)" do |f| %> User name : <%= f.text_field "uxUserName", :class => "TextBox", :style => "width:100px;" %>&nbsp;* &nbsp;Password : <%= f.password_field "uxPassword", :class => "TextBox", :style => "width:100px;" %>&nbsp;* <%= f.submit "Go!", :class => "Button-Simple", :id => "uxSubmitButton" %> <% end %> the javascript function is simple as follows function validateForm(event){ return false; //event.preventDefault(); }

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  • What's causing "NoMethodError: undefined method `include?' for nil:NilClass"

    - by NudeCanalTroll
    I have a Book model in my Rails application, with various properties (aka columns in the book db table). One of these properties is "ranking". Recently, may app has started to throw NoMethodError: undefined method 'include?' for nil:NilClass for the following code: def some_method(book, another_arg) return book.ranking unless book.ranking.blank? ... end However, it's not consistent. The vast majority of the time, accessing book.ranking works -- the error is thrown maybe 2-4% of the time. If I change the code to book[:ranking] or book['ranking'] instead of book.ranking, it works 100% of the time. Any ideas?

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  • resend confirm instructions via devise

    - by Paul 'Whippet' McGuane
    what im trying to achieve is that when an admin views a list of members, they can click a link to resend the instructions on how to confirm that members accounts. this is the code im using to try and achieve this = link_to 'Resend Confirmation', confirmation_path(:user => {:email => user.email}), :remote => :true im hoping that this would allow me to pass the users email through to the link have it then sent to that user though the issue im getting is Could not find a valid mapping for {:user=>{:email=>"[email protected]"}}

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  • Process AJAX response with long runing tasks

    - by mpz
    I have long time task in controller action. I use delayed job for it. (Also in heroku it is good practice for perfomance - dyno must work for small time in each request) But my client need result of it work and users can wait on that task. It is more clear: no any addition models or records in it, simple view and js... I think about such way: On client run AJAX with very long timeout (5 min for example) Client make request to server as usual On controller in action1 def start_work (with delay work setup) i need NO any response to client After work performs (delay job finished) i need run new action2 with response to client Client recieve response after about 1-5 min It is possible?

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  • Ajax using Rails

    - by Steve
    Hi, I have a favourite and un-favourite functionality in my application and I am using jQuery. This functionality works partially. The page gets loaded, and when I click the 'favourite' button(it is inside add_favourite_div element), it sends a XHR request and the post is set as favourite. Then a new div called "remove_favourite_div" replaces its place.Now when I click the remove favourite(which is part of remove_favourite_div), it sends a normal http request inside of xhr. The structure when the page gets loaded first time <div id="favourite"> <div id="add_favourite_div"> <form method="post" id="add_favourite" action="/viewpost/add_favourite"> <div style="margin: 0pt; padding: 0pt; display: inline;"> <input type="hidden" value="w873BgYHLxQmadUalzMRUC+1ql4AtP3U7f78dT8x9ho=" name="authenticity_token"> </div> <input type="hidden" value="3" name="Favourite[post_id]" id="Favourite_place_id"> <input type="hidden" value="2" name="Favourite[user_id]" id="Favourite_user_id"> <input type="submit" value="Favourite" name="commit"><br> </form> </div> </div> DOM after clicking on the unfavourite button <div id="favourite"> <div id="remove_favourite_div"> <form method="post" id="remove_favourite" action="/viewpost/remove_favourite"> <div style="margin: 0pt; padding: 0pt; display: inline;"> <input type="hidden" value="w873BgYHLxQmadUalzMRUC+1ql4AtP3U7f78dT8x9ho=" name="authenticity_token"> </div> <input type="hidden" value="3" name="Favourite[post_id]" id="Favourite_place_id"> <input type="hidden" value="2" name="Favourite[user_id]" id="Favourite_user_id"> <input type="submit" value="UnFavourite" name="commit"><br> </form> </div> </div> In my application.js, I have two functions to trigger the xhr request $("#add_favourite").submit(function(){ alert("add favourite"); action = $(this).attr("action") $.post(action,$(this).serialize(),null,"script"); return false; }); $("#remove_favourite").submit(function(){ alert("remove favourite"); action = $(this).attr("action"); $.post(action,$(this).serialize(),null,"script"); return false; }); Here, when the post is initially not a favourite, favourite button is displayed and when i clicked on the button, $("#add_favourite").submit gets called and unfavourite form is displayed correctly, but now when I click on the un-favourite button, $("#remove_favourite").submit does not get called. The whole scenario is true in both ways, I mean favourite-Unfavourite and Unfavourite-favourite Can someone please help me to solve this Thanks

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  • Take data from an XML file and put it into a MySQL database

    - by Aidan
    Hi Guys, I'm looking to construct a script that would go through an XML file. Would find specific tags in it, put them in a table and fill the table with specific tags within them. I'm using MySQL 5.1 so loadXML isn't an option and I think that ExtractData() method wont be much use either.. but I don't really know. What would be the best way to go about this?

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  • get random password with puppet function

    - by ninja-2
    I have a function that allow me to generate random password. My function is working well without a puppetmaster. When i tried with a master an error appear when I called the function : Error 400 on SERVER: bad value for range Here is my function module Puppet::Parser::Functions newfunction(:get_random_password, :type => :rvalue, :doc => <<-EOS Returns a random password. EOS ) do |args| raise(Puppet::ParseError, "get_random_password(): Wrong number of arguments " + "given (#{args.size} for 1)") if args.size != 1 specials = ((33..33).to_a + (35..38).to_a + (40..47).to_a + (58..64).to_a + (91..93).to_a + (95..96).to_a + (123..125).to_a).pack('U*').chars.to_a numbers = (0..9).to_a alphal = ('a'..'z').to_a alphau = ('A'..'Z').to_a length = args[0] CHARS = (alphal + specials + numbers + alphau) pwd = CHARS.sort_by { rand }.join[0...length] return pwd end end The function is called in both case with $pwd = get_random_password(10). When I specified the length directly in the function to 10 for example. the password is well generated in master mode. Have you any idea why i can't specify the lentgth value ? Thanks for any help.

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  • Does rails do a rollback if I use begin...rescue?

    - by codeman73
    I'd like to add a begin...rescue block to one of my controllers create method, in order to log better info and construct the correct error message to return to the client. Does the rescue in any way 'interrupt' the rollback process? I'm assuming rails automatically does a rollback. When does it happen? Has it already happened by the time I get in the rescue clause? I'm using mySQL on Dreamhost and I think they use innoDB.

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  • Create select based on routing, how?

    - by huug
    I am trying to implement navigation like in Tree Based Navigation but based on url's defined in routes.rb (named routes, resources, ...). Is it possible to retreive a collection of all routes defined in routes.rb? So I can use it in a select like this: <%= f.collection_select :url, Route.all, :url, :name %> Tnx!

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  • Processing large recordsets in Rails

    - by japancheese
    Hello, I'm trying to perform a daily operation on a larger than normal dataset (2m+ records). However, Rails seems to take a very long time performing operations on such a dataset. Operations like Dataset.all.each do |data| ... end take a very long time to complete (I assume this is because it can't fit all the items into memory at once, right?). Does anyone have any strategies on how I could handle this situation? I know SQL would probably speed up the process, but I'm looking to use the Rails environment as I can do many more complicated things to the data than I can with just SQL statements.

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  • query not displaying proper result

    - by ravindra
    In my Rails 3 project I have the following code for My controller: class TasksController < ApplicationController def today @tasks = Task.today @task = Task.new respond_to do |format| format.html { render :text=> "Sorry , you don't have any task pending today." } format.html # new.html.erb format.xml { render :xml => @tasks } end end def this_week @tasks = Task.this_week @task = Task.new respond_to do |format| format.html { render :text => "Sorry , No content for selected period." } format.html # new.html.erb format.xml { render :xml => @tasks } end end end My model: class Task < ActiveRecord::Base def self.today Task.where(:due_date => "Date.today" , :task_status => "open").order("due_date ASC") end def self.this_week Task.where(:due_date =>"Time.now.this_week" , :task_status => "open" ).order("due_date ASC") end end Why it does not displaying anything in the relative view. Please help me. Thanks

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  • Can using Chronic impair you 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

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  • Use a function in a conditions hash

    - by Pierre
    Hi, I'm building a conditions hash to run a query but I'm having a problem with one specific case: conditions2 = ['extract(year from signature_date) = ?', params[:year].to_i] unless params[:year].blank? conditions[:country_id] = COUNTRIES.select{|c| c.geography_id == params[:geographies]} unless params[:geographies].blank? conditions[:category_id] = CATEGORY_CHILDREN[params[:categories].to_i] unless params[:categories].blank? conditions[:country_id] = params[:countries] unless params[:countries].blank? conditions['extract(year from signature_date)'] = params[:year].to_i unless params[:year].blank? But the last line breaks everything, as it gets interpreted as follows: AND ("negotiations"."extract(year from signature_date)" = 2010 Is there a way to avoid that "negotiations"." is prepended to my condition? thank you, P.

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  • When destroying one record, another one gets destroyed

    - by normalocity
    Products (like an iPod Classic) :has_many = :listings, :dependent = :destroy Listings (like "My name is Joe, and I have an iPod for sale) :belongs_to = :product So, if I delete a given Product, all the listings that point to it get deleted. That makes sense, and is by design. However, I am writing a "merge" function, where you merge two Products into one, and combine their Listings. So, let's say my two products are "iPod Color" and "iPod Classic", and I want to merge the two. What I want to do is say, "iPod Color, merge into iPod Classic", and result should be that: All the iPod Color Listings are re-pointed to the iPod Classic product After the product_id change, the Listing(s) are saved I then delete the "iPod Color" product Well, that should all work fine, without deleting any Listings. However, I've got this controller, and for whatever reason when I destroy the "iPod Color" Product, even after confirming that the Listings have been moved to "iPod Classic" and saved to the database, the Listings that were previously pointed to "iPod Color" get destroyed as well, and I can't figure out why. It's as if they are retaining some kind of link to the destroyed product, and therefore begin destroyed themselves. What painfully obvious thing am I missing? def merge merging_from = Product.find(params[:id]) merging_to = Product.find_by_model(params[:merging_to]) unless merging_to.nil? unless merging_from.nil? unless merging_from == merging_to # you don't want to merge something with itself merging_from.listings.each do |l| l.product = merging_to l.save end # through some debugging, I've confirmed that my missing Listings are disappearing as a result of the following destroy call merging_from.destroy end end end

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  • How do I add values in an array when there is a null entry?

    - by Angela
    I want to create a real time-series array. Currently, I am using the statistics gem to pull out values for each 'day': define_statistic :sent_count, :count => :all, :group => 'DATE(date_sent)', :filter_on => {:email_id => 'email_id > = ?'}, :order => 'DATE(date_sent) ASC' What this does is create an array where there are values for a date, for example [["12-20-2010",1], ["12-24-2010",3]] But I need it to fill in the null values, so it looks more like: [["12-20-2010",1], ["12-21-2010",0], ["12-22-2010",0], ["12-23-2010",0], ["12-24-2010",3]] Notice how the second example has "0" values for the days that were missing from the first array.

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  • How to avoid links to map.root getting shortened?

    - by Guy C
    I have a Reports controller and various reports: http://localhost/reports/main/this_month http://localhost/reports/main/last_month http://localhost/reports/main/this_year I wanted http://localhost to default to http://localhost/reports/main/this_month. That is easy enough using map.root in my routes.rb. However when I do this any links to http://localhost/reports/main/this_month are now shortened to just http://localhost. I want the links to stay full

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  • modalpopup.js not working properly in windows

    - by jpallavi
    I have applied modalpopup.js to display error & restrict word limit counter to 300words for messages. Although it displays error message but user can still type words more than 300words in windows operating system. It works fine in fedora operating system.Can somebody help solve the issue.

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  • accessing values in two dimensional arrays

    - by BrainLikeADullPencil
    In some code I'm trying to learn from, the Maze string below is turned into an array (code not shown for that) and saved in the instance variable @maze. The starting point of the Maze is represented by the letter 'A' in that Maze, which can be accessed at @maze[1][13]---row 1, column 13. However, the code I'm looking at uses @maze[1][13,1] to get the A, which you can see returns the same result in my console. If I do @maze[1][13,2], it returns the letter "A " with two blank spaces next to it, and so on. [13,3] returns "A " with three blank spaces. Does the 2 in [13,2] mean, "return two values starting at [1][13]? If so, why? Is this some feature of arrays or two dimensional arrays that I don't get? [20] pry(#<Maze>):1> @maze[1][13] => "A" [17] pry(#<Maze>):1> @maze[1][13,1] => "A" [18] pry(#<Maze>):1> @maze[1][13,2] => "A " [19] pry(#<Maze>):1> @maze[1][13,3] => "A " Maze String MAZE1 = %{##################################### # # # #A # # # # # # # # # ####### # ### # ####### # # # # # # # # # # # ##### # ################# # ####### # # # # # # # # # ##### ##### ### ### # ### # # # # # # # # # # # # B# # # # # # # # ##### ##### # # ### # # ####### # # # # # # # # # # # # # # ### ### # # # # ##### # # # ##### # # # # # # # # #####################################}

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  • Showing pagination with only single page using will_paginate

    - by James
    I'm using will_paginate as standard, but it only shows the pagination controls (< 1 2 etc) when there's more than one page to display. Normally, this would be what is wanted, but I want to see the pagination controls (for UI consistency and to get round an annoying CSS quirk in the system I'm working on) even when there's only 1 page to display (showing < 1 ). Is this possible?

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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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  • DataMapper save fails but with no errors

    - by Justin Bozonier
    When I try to modify and then save a model using DataMapper I get a SaveFailure exception but no errors. Specifically I see this message: "MonthlyBill#save returned false, MonthlyBill was not saved" This is the code doing the saving: post '/monthly_bills' do with_authenticated_user do |user| description = params[:description] expected_amount = params[:expected_amount] pay_period = params[:pay_period] monthly_bill = MonthlyBill.new(:description=>description, :expected_amount=>expected_amount, :pay_period=>pay_period) user.MonthlyBills << monthly_bill user.save end The User model: class User include DataMapper::Resource property :id, Serial property :email_address, String property :password, String has n, :MonthlyBills has 1, :CurrentPayPeriod end The MonthlyBill model: class MonthlyBill include DataMapper::Resource property :id, Serial property :description, String property :expected_amount,Decimal property :pay_period, Integer belongs_to :user end What is the issue and, more importantly, how can I get DataMapper to tell me more specifically what is wrong?

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