Rails

Great Reads

How to Detect if Client has JavaScript Enabled/Disabled in Backend Server

by Danny Chu

Learn how to detect if client has JavaScript enabled or disabled at your backend webserver

Using Rails Service Objects to Keep Code Clean

by Aleksandr Ulanov

What are Service Objects and how you can use them to make your app cleaner and keep it maintainable

Building Responsive Rails Apps with Hotwire

by Aleksandr Ulanov

In this article, we'll go through the basics of Hotwire, as well as build a sample app using it.

Install Rails 4 and MySQL Server on Windows 7/8

by Rocky R. Fernandes

Install Rails 4 and MySQL Server on Windows 7/8

Latest Articles

Using Rails Service Objects to Keep Code Clean

by Aleksandr Ulanov

What are Service Objects and how you can use them to make your app cleaner and keep it maintainable

Building Responsive Rails Apps with Hotwire

by Aleksandr Ulanov

In this article, we'll go through the basics of Hotwire, as well as build a sample app using it.

Security Vulnerabilities – How to Find and Fix Them

by datarockets

Finding a vulnerability, using it for data extracting from the database, and fixing it with just one line of code

Using AJAX in a Ruby on Rails App

by Programming Tutorials by Tests4Geeks

In this tutorial, you'll see a very simple example of how to send a JavaScript response from the server and some of the more interesting things that can be done.

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top

Rails

How to Detect if Client has JavaScript Enabled/Disabled in Backend Server

29 Nov 2017 by Danny Chu

Learn how to detect if client has JavaScript enabled or disabled at your backend webserver

Javascript

Java

HTML

Using Rails Service Objects to Keep Code Clean

29 Aug 2022 by Aleksandr Ulanov

What are Service Objects and how you can use them to make your app cleaner and keep it maintainable

Building Responsive Rails Apps with Hotwire

11 Aug 2022 by Aleksandr Ulanov

In this article, we'll go through the basics of Hotwire, as well as build a sample app using it.

What is the best IDE or Text Editor for Ruby ?

10 Sep 2013 by ridoy

Netbeans(6.5 Beta) or Aptana would be a good one.See these 2 links to know about some more options!:Best IDE for Ruby [^]What Ruby IDE do you prefer? [^]

Ruby

Windows

Rails

Install Rails 4 and MySQL Server on Windows 7/8

22 Jul 2014 by Rocky R. Fernandes

Install Rails 4 and MySQL Server on Windows 7/8

Using AJAX in a Ruby on Rails App

9 Jan 2018 by Programming Tutorials by Tests4Geeks

In this tutorial, you'll see a very simple example of how to send a JavaScript response from the server and some of the more interesting things that can be done.

Ruby

Rails

Use Mina to Deploy Rails Easily (and really, really fast!)

16 Feb 2016 by Jason Floyd

Use Mina to deploy a Ruby on Rails app quickly and easily.

Help with planning a timetable web app

24 Aug 2016 by Member 11114915 - Tanvi

There could be two way to reach the solution here on the basis of front end developed to enter the details(by user).1). If on front end dropdowns/Radiobuttons has been used to select Hours, Subject, class then your plan is perfect.2). If user is entering details in textboxes manually...

SQL

Rails

Creating a Location Aware Website using Ruby on Rails and PostGIS

9 Jan 2012 by lassebunk

How to create a location aware website using Ruby on Rails, PostgreSQL, and PostGIS

Leveraging Rails 3.1, SCSS, and the assets pipeline to differentiate your stylesheets

10 Jan 2012 by lassebunk

How to differentiate your stylesheets, and have different page styles using Rails 3.1, SCSS, and the assets pipeline.

Ruby

CSS

Rails

invoking rails server method using client side using jquery and ajax

8 Jun 2012 by shaziya syeda

Hi,I am working in ruby on rails and i am new to that.I need to invoke a rails controller method as onclick event of already existing links in my application.I learnt that it is not possible to invoke rails server method throug javascript which runs client side.I would appreciate...

jQuery

Rails

Ajax

invoking rails server method using client side using jquery and ajax

8 Jun 2012 by Sridhar Patnayak

Hi Fathima, For this you have many approches are their to call server side method from client side.Some of them are PageMethods Ajaxpro (A third party javascript library) Jquery $.ajax() Many other approches...you can choose any of them ...

jQuery

Rails

Ajax

Rails server goes down frequently in production mode

21 Oct 2012 by Dipali Barapatre

I am using Rails 3.0.5 version and Ruby 1.9.2 in my application.Its working fine in development mode but in production mode server goes down after every 3-4 days.It gives below error in /var/log/https/error.log file.[Sun Oct 21 09:39:03 2012] [error] [IP_ADDRESS] Premature end of...

Rails

Apache

Application get crashed with no trace frequently after one or two days.

30 Oct 2012 by Sumit Munot

This is the last error after which the application stops working[Fri Aug 31 02:07:23 2012] [error] [client 145.123.411.19] Premature end of script headers: [ pid=13552 thr=1 file=ext/apache2/Hooks.cpp:817 time=2012-08-31 02:07:23.257 ]: The backend application (process 13680) did not...

Ruby on Rails in windows operating system

28 Jan 2013 by Member 9171128

I am new to ruby on rails?What software's i can install in my windows system ?How to install?Can any one help megive me some examples on rubyonrails examplesAnd also how to deploy this applications in aws?plz help me

Ruby

Rails

Ruby on Rails in windows operating system

28 Jan 2013 by Sergey Alexandrovich Kryukov

Look at this download page: http://rubyonrails.org/download[^].The very first link is source code, the very second one — Windows installer.—SA

Ruby

Rails

How can i create and publish my own gem file like jar file in java

27 Feb 2013 by Harshal Jumle

How can i create and publish my own gem file like jar file in java.Any link or walk through or tutorial of steps to accomplish this task.

Ruby

Rails

[RoR] passing view's id to controller

31 May 2013 by Vitalij Dešuk

I have User, Prog, Enrollment model associated has_man through. Idea is that User adds Prog to profile and Prog can accept User's request or decline.

Rails

controller

model

Ruby on Rails. destroy action when has_many through

30 May 2013 by Vitalij Dešuk

I have made has_many through association on User, Prog and Enrollment. To be able to add Prog to User I did something like: enrollments#createdef create @prog = Prog.find(params[:id}) @enrollment = Enrollment.create(user_id: current_user.id, prog_id: @prog.id) redirect_to...

Undefine method on ruby on rails on Fedena Project

2 Jul 2013 by Mamun From Bangladesh

Asking on fedena issuemishu - Thu, 2013/06/13 - 13:45.Brother, i have install fedena on ubuntu 11.04.it work fine.But from student profile,when i try to get dicussion i am getting this error:NoMethodError in GroupsController#indexundefined method `member_groups' for...

Ruby

Rails

Details for : fedena instalation in windows 8

3 Jul 2013 by CHill60

There are full instructions on the fedena site http://www.projectfedena.org/install[^]Looking at the error above I don't think you've done step 3 "Install MySQL"

Ruby1.8

Ruby

Rails

Jquery UI datepicker implementation using text_field_tag in form_tag using Rails

14 Sep 2013 by Member 10253442

QUESTION: My need is to include a specific datepicker for EACH form when a specific button is clicked. Im not sure whether what im doing below in the jquery portion of the code for the datepicker is correct? Can someone please guide me with this? ThanksDETAILS: I am currently using a hidden...

What is the best IDE or Text Editor for Ruby ?

10 Sep 2013 by saad_lah

AoA, I am going to develop replica of wikipedia for my semester project, and I have decided to make it on ruby.I have used ASP.NET C#, and I am kinda useto of Visual Studio(currently of 2012), just because of its extra ordinary intellisense of getting functions, variables etc from not only...

Ruby

Windows

Rails

How to create a treeview in Ruby on Rails

2 Oct 2013 by Hoa Súng

I get stuck when I would like to create a treeview in my site like this: - I will add a textfield: "Add new category" and a button: "Submit" - When click on "Sumit" a new category will be created, Product and History subpages should also be created automatically. - In Product has a...

Ruby

Rails

Paypal adaptive payment - preapproval : Start Date Issue

12 Nov 2013 by boombidibam

Hello,I have developed an app using Adaptive payment API, pre-approval. My platform (ubuntu server, Rails, mysql) is using GMT+4 time.-->We are the Nov 8.a/ at 6pm in the afternoon (GmT+4), Start Date for pre-approved payment from a user living using GMT +1 is correct and shows Nov...

Rails

MySQL

PayPal

Paypal adaptive payment - preapproval : Start Date Issue

9 Nov 2013 by OriginalGriff

Never, ever, accept code from a insecure website to handle anything to do with real money.You do not know who is giving you the code, you do not know what it does, you do not know that it places the monies correctly into the appropriate account, without passing the details to any third...

Rails

MySQL

PayPal

How to create new language in Canvas LMS

11 Nov 2013 by Hoa Súng

I set up already Canvas LMS on my computer and now I want to add new language as vi.yml under folder locale. But I don't know how to config this new language which will be applied and set to default language.

Ruby

Rails

CMS

Agnualrjs (Ajax) Crawling implementation for a website...

19 Dec 2013 by Sanjay Salunkhe

I have made an angular app with rails as a backend.I have read lots of blog and articles about how to make an angulajs app crawlable.for example - : "http://www.example.com/#!/home" Google bots will convert this url into "http://www.example.com/?_escape_fragment_=/home".I have written...

Rails

AngularJs

Ajax

how to display the value by fetching the value from the textbox and display it in a listbox

27 Jan 2014 by Bindi Bhatt

Currently i'm not having any code , i'm not getting the way to do this but i want to learn asap ,so please anybody can help me with this. I'll glad if any can do this .Thank You

how to display the value by fetching the value from the textbox and display it in a listbox

27 Jan 2014 by Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

If you want to do it in JavaScript, then analyze the HTML rendered on browser for the ListBox.Suppose it is a table having rows for each item. So, you need to create one new row and append that to the existing table. That will create a new ListBox item.That's it.

how to display the value by fetching the value from the textbox and display it in a listbox

27 Jan 2014 by Kornfeld Eliyahu Peter

I Googled it for you:Quote:add textbox value to listbox using jquery

can u explain what this code does

31 Jan 2014 by E.F. Nijboer

Yeah, it simply checks that you don't use publicly known information as a password because that would make it to easy to break it. Good lucl!

Ruby

Rails

plz explain in detail, what is the use controller_spec in ruby on rails

2 Feb 2014 by Member 10535639

Plz ..in deatail ...what this spec do while start a rail application

Ruby

Rails

plz explain in detail, what is the use controller_spec in ruby on rails

2 Feb 2014 by Richard MacCutchan

This question is far too broad for a Quick Answers forum. Try https://www.google.com/search?q=ruby+on+rails+controller+spec[^].

Ruby

Rails

How can i create and publish my own gem file like jar file in java

11 Jun 2014 by Mdzzzl5

I would suggest, as a good starting place: Make Your Own Gem from the RubyGems website[^]Hope that helps

Ruby

Rails

How do I call store procedure

18 Jul 2014 by Viral Prajapati

please help me to solve it...i am working in ruby with store procedure with following code.... call_stored_proc_verb="exec" name="dbo.SpData" args=1 sql = "#{call_stored_proc_verb} #{name} #{args}" results=ActiveRecord::Base.connection.execute(sql) ...

Ruby1.8

Ruby

Rails

Making a Class Schedule Using a Genetic Algorithm

25 Aug 2014 by Member 8065843

Do you have any article which describes about Making a Class Schedule Using a Genetic Algorithm using ruby on rails?

Ruby

Rails

Rails 4 ActionMailer Issue

13 Dec 2014 by Member 11309086

I have created a rails app for booking cabs online. I want my app to have the functionality of sending emails to users once their booking is confirmed. For this, I am following Ryan Bates railscasts: `https://www.youtube.com/watch?v=v1KI571TdUQ`I started with creating a setup_mail.rb...

Rails

Using the Sync gem to make restful Rails app real-time

14 Dec 2014 by Member 10789046

I've made a functional mini social network app in Rails. I'm using the Sync gem in order to make my app realtime so that when a user posts something, it'll immediately show up on their home feed. I feel like I'm extremely close to making this work. The form works and there are no run-time errors...

Rails

realtime

What is the Rails eqivalent to ASP.Net's Response.Filter?

6 Jan 2015 by Gregory Gadow

I've been learning Ruby, and would like to translate some Response filters I had written in VB.Net some years ago. I have been told that Rails has an equivalent slot, where you can modify a document after it has been processed by Rails but before it is delivered to the user. My sources disagree...

Rails

ASP.NET

please configure your config/database.yml first

12 Jan 2015 by Hapisha

I m trying to install redmine on my PC using the installation step http://www.redmine.org/projects/redmine/wiki/redmineinstall[^] found here. but getting the error please configure your config/database.yml first while executing the command "rake generate_secret_token" . i need help on this...

please configure your config/database.yml first

9 Mar 2015 by Mdzzzl5

Not trying to seem smart-alecky, but have you opened config/database.yml and filled it in with the correct values to access your database? That would be my first guess. If you've left the default values, Rails can't access the db.

How do I make forums with ruby on rails

15 Mar 2015 by manchanx

Here's an online book on Ruby On Rails: https://www.railstutorial.org/book/beginning[^]From the first paragraph:[..] the Ruby on Rails Tutorial will give you a thorough introduction to web application development, including a basic grounding in Ruby, Rails, HTML & CSS, databases, version...

Ruby

Rails

forum

How do I make forums with ruby on rails

15 Mar 2015 by User 59241

There are a number of RoR forum engines to choose from. Maybe start by having a look at them:https://www.ruby-toolbox.com/categories/forum_systems[^]You did not say why you want to do this because there are many easier ways to set up a forum.

Ruby

Rails

forum

update method throwing error ruby on rails

3 Apr 2015 by Syed Muhammad Ali Gardezi

I am trying to figure out the problem(I am new to ruby ) that I am facing but I can't figure out the problem. I can't figure out how to explain the problem so if you have an doubt you can ask.now getting to the main question When ever updateRequest function of the request is called it throws an...

Ruby

Rails

Multiple Partials in a Ruby on Rails View

29 Apr 2015 by Nagy Vilmos

I am building a small app using Ruby on Rails, and I am trying to rationalise my views.Every view [.html.erb] is becoming the same thing: Page Title ...

Ruby

Rails

Ruby on rails routing is displaying only show view for index and edit action methods

30 Apr 2015 by Torakami

Hi , I have created one controller and added default 7 action methods , I have also created 4 views and those are index , new , show , edit all contains difeent data also added resources :posts controller configuration into my routing file as well 'My problem is when i try to...

Ruby

Rails

how to move a method from frontground to background that using resque-scheduler

7 May 2015 by hai nguyen ngoc

ActiveAdmin.register Link do member_action :scan, method: :get do resource.scan_jobs # => Resque.enqueue_at( 1.minute.from_now, resource.scan_jobs ) ? redirect_to '/', notice: "Scan!" end index do selectable_column Link.column_names.each do |field| ...

Rails

How to use rails undefined method `attr_accessible' in version 4 +

20 May 2015 by Torakami

I am new on rails. Below is what i am tryingclass Category

Ruby

Rails

How to add files to existing tar archive? | Ruby on Rails

23 Aug 2015 by Martin Zinovsky

Hi guys!I have archive about 2gb size and I need to add bunch of the txt/config files in response on user interactions. How can I do that in ruby/rails?Thanks!

Ruby

Rails

What does it mean. => in rails

19 Oct 2015 by E.F. Nijboer

It is called a Hash Rocket. Used for creating hashes like this {key1 => value1, key2 => value2}By the way, new style syntax (Ruby 1.9) is: {key1: value1, key2: value2}Good luck!

Ruby

Rails

What does it mean. => in rails

20 Oct 2015 by priya dharshan

This is called Arrow functions.An arrow function expression (also known as fat arrow function) has a shorter syntax compared to function expressions and lexically binds the this value. Arrow functions are always...

Ruby

Rails

Is SQLite is the only supported Database Management by Ruby on Rails?

5 Nov 2015 by TheWajid

Is SQLite is the only supported Database Management by Ruby on Rails?

Ruby

Rails

Is SQLite is the only supported Database Management by Ruby on Rails?

5 Nov 2015 by Mehdi Gholam

No, an example of the others : https://www.digitalocean.com/community/tutorials/how-to-use-mysql-with-your-ruby-on-rails-application-on-ubuntu-14-04[^]

Ruby

Rails

How do I get a value from query and add the value by 1 on Rails

30 Nov 2015 by rudy-peto

Hi, I really appreciate any respond for this simple question.test = Model.find_by_sql("SELECT number FROM tbl_one LIMIT 1").each do |a| p = a('number') puts pendLook, I mean, after store a value to 'p', how do I add the 'p' value by 1.puts p + 1I tried it but doesn't...

Ruby

Rails

web

How do I get a value from query and add the value by 1 on Rails

30 Nov 2015 by rudy-peto

Ups!Sorry, my mistake.. I found it! p = a('number').to_iThen I can add the value by 1 easily..

Ruby

Rails

web

How to validate date attributes in rails(custom_validations)?

6 Apr 2016 by Member 11617113

I have two models. models/Resident.rb : has_many: leavesmodels/leave.rb: belongs_to: residentNow what I want to validate leave model attributes before they get created..leave.rb attributes : start_date,end_date,destinationhere is my leave model:class Leave

How to bypass jquery link in ruby on rails?

28 Apr 2016 by Karthik_Mahalingam

check thisjQuery The noConflict() Method[^]Avoiding Conflicts with Other Libraries[^]jQuery.noConflict() | jQuery API Documentation[^]

Regexp code to replace all “__random_anm[12, l]” with PHP rand() PHP function [duplicate]

17 May 2016 by dravoss

Hello ,i tried to use this code to replace any __Random_and[x,y] with rand(x,y) but it didn't run please help me function charCallbackRand($matches1){ $charOne = (int)$matches1[1]; $charTwo = (int)$matches1[2]; return rand($charOne,$charTwo); } $myword =...

Regexp code to replace all “__random_anm[12, l]” with PHP rand() PHP function [duplicate]

17 May 2016 by George Jonsson

Instead of using a preg_replace_callback() you can directly insert the wanted numbers from the original text with preg_replace()Try this:$string = '__Random_and[22,95]';$pattern = '/__Random_and\[(\d+),(\d+)\]';$replacement = 'rand($1,$2)';$result preg_replace($pattern,...

Regexp code to replace all “__random_anm[12, l]” with PHP rand() PHP function [duplicate]

17 May 2016 by Patrice T

RegEx only apply on strings, not on code.function charCallbackRand($matches1){ $charOne = (int)$matches1[1]; $charTwo = (int)$matches1[2]; return 'rand('.$charOne.','.$charTwo.')'; } $myword = '__Random_and[22,95]'; $result =...

Help with planning a timetable web app

24 Aug 2016 by Member 12701313- questforimprovement

I'm trying to create a planner for teachers, as a personal project, where the Users (teachers) can click on a day (in a calendar, that's been already created) leading to a page where they can add a Subject, Hours, Class. All of this, along with the User_id and Day should be updated in the...

SQL

Rails

How to create a rake task to click all link_to

16 Sep 2016 by Paul Yi

I have button/link that takes a screenshot when clicked. How can I automate this to click the link on all pages to take the screenshot by a script so I can have all screenshots available. Trying to avoid having to go to all pages to click that button manually. Possibly through a rake but I've...

Ruby

Rails

Ruby on rails test failure issue

20 Jan 2017 by Member 12960523

Hi, I am trying to build a ruby on rails application but I am unable to resolve this issue:ERROR["test_should_redirect_update_when_not_logged_in", UsersControllerTest, 3.086077447998832] test_should_redirect_update_when_not_logged_in#UsersControllerTest...

Ruby

Rails

Ruby on rails fields_for form

6 Mar 2017 by Member 13041006

Hello,thanks a lot for you help. I am having some issues in understanding how fields_for works. I have a location model that has_many :ads. I would like to do a form for filtering locations and ads. I am thinking of using the following syntax:

Ruby

Rails

Ruby on rails fields_for form

6 Mar 2017 by Member 13041006

Ok. I found out the solution using nested attributes hear is the link to the explanation.Ruby on Rails, two models in one form - Stack Overflow[^]

Ruby

Rails