Questions tagged [ruby-on-rails]
Ruby on Rails is an open-source web development framework written in Ruby. If your question code is written in Ruby on Rails, tag with Ruby as the language tag. Many things are defined by convention, freeing you from having to re-invent things to stay productive.
589
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28
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4answers
14k views
Unit-testing a controller in Ruby on Rails
I intend this to be a general question on writing an effective set of test cases for a controller action.
I include the following ingredients:
Ruby on Rails
RSpec: A testing framework. I considered ...
25
votes
5answers
32k views
Use of a regex stored inside a YAML file
I installed settingslogic and in the configuration file I put the regex for the email as follows:
...
15
votes
4answers
14k views
Setting the default display name for my model
I have a method in my Ruby code that sets the default name for my model. Rubocop complains that Assignment Branch Condition Size is too high, 21.24/15. How can I improve this?
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10
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2answers
6k views
Return render in Ruby on Rails
Is it bad to do return render? I am doing this to NOT also allow a redirect.
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9
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3answers
2k views
Storing a Ruby app's settings
I have used code which looks a little like this in an app I'm working on:
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9
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2answers
4k views
Rails controller method that conditionally filters results
This code for my blog checks to see if tags are in the params hash. If they are, then only posts that are tagged will be paginated. Otherwise, all of the posts are paginated.
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9
votes
1answer
84 views
Summing the size/count of associations for multiple records
I'm working on a plain Ruby class within a Rails application.
For the total_leg_count method---is that the best way to go about achieving what I want? I feel like ...
8
votes
2answers
3k views
Using I18n in capybara feature specs
Here I am trying to avoid hardcoding in flash messages by using I18n. Also, I have tried to use a CSS selector for submitting the form to make the tests less brittle (I don't really care that much ...
8
votes
2answers
5k views
Handling nil: Trying to avoid #try
Yesterday, I introduced a bug into our codebase by calling #titleize on a string that could possibly come in as nil:
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8
votes
2answers
201 views
Error-testing be with cucumber/capybaraweb
I'm working on writing tests for a rails application using cucumber and capybara. I have a scenario for a user editing a post, and making it invalid.
The scenario looks like this:
...
8
votes
1answer
23k views
Filtering (search) a model with multiple params in hash
This function in my Profile model receive a hash from a search form and should filter the table depending on those values. I guess there is something like a pattern ...
8
votes
1answer
10k views
My first controller rspec test
I'm just started learning TDD with Rails and RSpec. This is my first test for controller. Just plain RESTful UserController that responds with JSON, so it has no new and edit methods. Please review it
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8
votes
1answer
2k views
Refactoring contest: Rails accepts_nested_attributes_for a many-to-many associated model
I found myself struggling when it came to refactor the following (working) code. Since can't be found a lot of documentation about Rails 'accepts_nested_attributes_for' applied to a many-to-many ...
8
votes
3answers
3k views
Linking issues, classifying the relationship as a cause, effect, superset, etc
I first saw this gigantic if and tried to refactor it. Could only end with a endless switch statement.
Old code -
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8
votes
1answer
829 views
Avoiding sub-queries in named scopes
I use named scopes all over the place.
When I have a named scope that deals with two different tables, I tend to query the second table in a sub-query. That way, if I mix and match with other tables ...
8
votes
1answer
244 views
RubyGem for Enums
A little background first. I've been working on a fairly large Rails application which quickly grew into a breeding ground for "smelly" code. One antipattern we were using a lot was storing objects ...
8
votes
1answer
1k views
Object cache storage for Rails
I want to have fast cache in which I want to keep all my nomenclature data.
I don't want to go with Memcached because I have to do serialize/de-serialize on each object which is slow.
So I choose to ...
8
votes
1answer
99 views
Adding product with attributes
I've been working on refactoring a piece of my code that allows a user to add items to their cart. Each product can also be added with different attributes. Thus if somebody adds the same product, ...
8
votes
1answer
1k views
Dynamic Controller Creation in Rails
I have overrode Rails' ActionDispatch::Routing::RouteSet::Dispatcher.controller_reference method to check if a controller exists by checking for the required ...
7
votes
1answer
404 views
7
votes
4answers
3k views
Avoid printing attributes of the nil object in Rails
Currently, when I'm wanting to print a value for my class I do the following...
<%= @person.team.name if @person.team.present? %>
This seems really ...
7
votes
1answer
12k views
Faster way to update/create of a large amount of records?
In our Rails 3.2.13 app (Ruby 2.0.0 + Postgres on Heroku), we are often retreiving a large amount of Order data from an API, and then we need to update or create each order in our database, as well as ...
7
votes
1answer
353 views
Refactor Helper methods
I have two helper methods that return li for view with the li for current view having id as selected.
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7
votes
1answer
104 views
Controller action to process orders and payments
I'm trying to reduce the if statements and simplify this create action.
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7
votes
1answer
1k views
ActiveRecord extension to find next / previous record(s) in one query
I just wrote this gem order_query to find next or previous records relative to the record assuming a (possibly complex) ORDER BY over the records. For example, this ...
7
votes
2answers
897 views
Shorter, better way to write a “query” involving virtual attributes
I have this code in a model for an invoicing app. This virtual attribute current_invoice gets the only non-rescinded invoice associated with a contract. The code ...
7
votes
1answer
2k views
Developing a multistep form
I implemented a multistep form with the method described by Ryan Bates in ep217 but I had some weird behavior when refreshing or moving between the steps Acts_as_good_style (old but still good) has a ...
7
votes
1answer
2k views
Dynamic association generation in ActiveRecord
I'm developing a Rails-based web interface/API for a large, vendor-supplied, legacy Oracle database. One of the constraints is that I can't change the schema other than adding views, because it still ...
7
votes
1answer
454 views
Email notifications system in Rails project
I'm working on the Rails project where I have many-to-many :through relationship. Each setting has many notifications through email_notification model where the notification can be primary or a ...
7
votes
2answers
227 views
Script to redo a rails migration easily
I need to redo a migration occasionally. The workflow is usually something like this:
find or ls | grep the migration using ...
7
votes
0answers
5k views
spec_helper.rb for RSpec, Capybara, FactoryGirl, Spork and Devise
Having been through hundreds of often-conflicting posts on testing with RSpec, Capybara, FactoryGirl, Spork, Guard and Devise without Cucumber, this is the spec_helper which "seems to" work.
I'm ...
6
votes
5answers
458 views
Search for products based on criteria
The method must search Products found by criteria and store them in @products.
The criteria are as follows:
If the user enters ...
6
votes
2answers
687 views
6
votes
2answers
137 views
6
votes
2answers
413 views
Find associated object if exists, otherwise generate it
I have a simplified model that looks like this:
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6
votes
2answers
156 views
Controller for classrooms and students
The actions I'm wondering about are members, add_student, and remove_student. They work ...
6
votes
2answers
104 views
How to avoid mounting SQL by concatenating strings?
I found myself mounting a query by concatenating strings. This just seems wrong. Any ideas of how to avoid this kind of situation?
I'm using Rails 4, and I don't see how can ...
6
votes
2answers
699 views
Refactor highlight matched word in string
I have following method which highlight matched word in text:
...
6
votes
2answers
3k views
Rails validating API parameters
I wanted to keep my API request logic separate form the controller logic. I therefore make use of a separate model (EmailChecker) that creates an instance of this ...
6
votes
3answers
176 views
A method that calculates win streaks
Right now, I have the following:
A win_streak column on the User table.
This method in ...
6
votes
2answers
164 views
Return input as a partial fraction
I need to write a function that, when given an input (string, float, or int), returns that input as a reduced partial fraction, and it needs to accept a wide array of inputs:
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6
votes
1answer
3k views
Mapping arrays to ranges in Ruby
I have a simple Rails app, which is used to run some clinical surveys. Participants answer sets of questions (multiple-choice, valued 1-5), and, within each set, the answers are summed up and the ...
6
votes
1answer
419 views
How and where to define a partial helper module
I want to split my helpers in different modules (and files), but I found some problems which I got around with the following solution:
...
6
votes
1answer
342 views
Simple authorization module with Rails
I created a simple Authorization module with Rails. I found that there are other authorization systems, such as CanCanCan, but they grant permissions at Model level and, for this particular website I ...
6
votes
2answers
752 views
6
votes
1answer
3k views
Using Rails concerns for validation in models
This is my first Rails project. I have read about concerns which are a great tool, but I am confused about how I should redesign my models.
Some models have similar fields, but the validations are ...
6
votes
1answer
549 views
React.js components for a golf app
I've recently started to look into React. I feel like I'm understanding it, but I want to make sure I'm doing the best practices before I make too many bad habits.
I'm using the ...
6
votes
1answer
10k views
Best way to include image_tag inside link_to
What is the most elegant and readable way to in include (potentially long) image_tag calls inside of link_to?
Example
...
6
votes
1answer
396 views
How to manage different views
I answered a question in stackoverflow but I gave a solution that looks a little dirty to me, I'd like your opinion because I think there is a much smarter way to do it.
A guest user should be able ...
6
votes
1answer
117 views
Seeding a database
I'm seeding my database with a relatively complex data model.
Constraints: Every meal has exactly one main dish (marked as is_main in intermediate table).
Here is ...
