Recent questions tagged Ruby

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ruby on rails 3 - How do I render partial via ajax in rails3 and jQuery

I could do sth like this in rails 2: def show_rec_horses rec_horses = Horses.find(:all) page["allHorses ... answer would be greatly appreciated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails 3 - how to render partial on everything except a certain action

I have a _header.html.erb partial which is where I put my navbar on my launch page I don't want ... specific actions on specific controllers? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - How to add a new action to the existing controller?

I'm pretty new in Rails. Sorry for the noob question. I've create a new controller: rails new ... goodbye" to this existing controller? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - Simple cropping with Paperclip

I would like to crop images on upload using Paperclip to get square thumbs from the center of the original picture. ... => "something here" } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails 3 - Should I use @import or manifest files?

Rails 3.1 introduces a new way of organizing both JS and CSS with the introduction of manifest files. For ... or continue using @import? Why? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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629 views

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ruby on rails - Does form_tag work with Simple_form?

I have a form that is using form_tag and not sure how to use it with the simple_form gem. This is how my ... could use some help. Thank you. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - How to sort a string's characters alphabetically?

For Array, there is a pretty sort method to rearrange the sequence of elements. I want to achieve the same ... I include mixins from Enumerable? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - Cannot execute "rails console" due to an error with readline

I cannot execute rails console due to this error: localhost:TwitterForZombies wiz$ rails c /Users/wiz/.rbenv/ ... for reading my question. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - Getting only new mail from an IMAP server

I am writing a client application that fetches emails from an IMAP server and then stores them in a database. ... ruby it shows nil everytime). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - How do I include variables in my VagrantFile?

Can anyone guide me to how do I include variables in my VagrantFile? I am trying to inject configs into the ... Edit: Updated code I am using See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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674 views

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ruby - Skip over iteration in Enumerable#collect

(1..4).collect do |x| next if x == 3 x + 1 end # => [2, 3, nil, 5] # desired => [2, 3, ... Ruby 1.8.7; my code excerpt is heavily abstracted) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby super keyword

From what I understand, super keyword invokes a method with the same name as the current method in the ... master branch. Thanks much. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - How to set config.action_controller.default_url_options = {:host = '#''} on per environment basis

Right now I'm using this which works for the development host, but I have to manually change the {:host => ""} ... , what am I missing here??? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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496 views

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ruby - Access instance variable from outside the class

If an instance variable belongs to a class, can I access the instance variable (e.g. @hello) directly using the ... = Hello.new puts h.method1 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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532 views

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ruby - Can I set up Cascade deleting in Rails?

I know this is probably on the Internet somewhere but I can't find the answer here on Stackoverflow so I thought ... the MySql and set this up? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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474 views

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ruby convert class name in string to actual class

How do I call a class from a string containing that class name inside of it? (I guess I could do case/ ... find(commentable_id) on it. Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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500 views

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ruby on rails - Sending mail with devise and Gmail smtp server

I am using Devise :confirmable and :recoverable module to confirm a user and to let him recover his password if ... of this. Thanks in advance See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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772 views

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ruby - Rails Search with optional parameters?

How would I do a search on a database when the search can provide many optional parameters such as ID, Zip, ... make a rails query like that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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814 views

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ruby - Can't get rack-cors working in rails application

I wanted to implement CORS in my rails application, so I googled rack-cors gem for it. And I did everything ... same error. Anyone, please help. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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693 views

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ruby - Nested object creation with JSON in Rails

How do I pass JSON to a RAILS application so it will created nested child objects in a has_many ... unprocessable_entity } end end end See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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693 views

1 answer

ruby on rails 3 - Mysql 5.6 headaches on Mac OSX

Several of my colleagues and I have recently upgraded from MySQL 5.5 to MySQL 5.6 using homebrew on our Macs ... be causing this? Thanks! Julie See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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644 views

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ruby - Radio buttons on Rails

Similar to this question: Checkboxes on Rails What's the correct way of making radio buttons that are related to ... the default value of these? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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401 views

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ruby on rails - How to use unscoped on associated relations in Rails3?

I have a default scope on products due to information security constraints. class Product < ActiveRecord::Base has_many ... may already be nil. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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604 views

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ruby on rails - When to use self in Model?

Question: when do I need to use self in my models in Rails? I have a set method in one of my models. ... someone finds one that's fine too. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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704 views

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ruby - How to run Rails console in the test environment and load test_helper.rb?

The background: I'm having some problems with Thoughtbot's "Factory Girl" gem, with is used to create objects ... RAILS_ENV=test.rb Grr. Argh. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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558 views

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ruby - Is there a literal notation for an array of symbols?

I like this literal expression for an array of strings: %w( i can easily create arrays of words ) I am ... wonderful just to use a literal. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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655 views

1 answer

ruby on rails - Bundle can't install RMagick gem on Mac OSX 10.7

I've installed ImageMagick with ImageMagick installer script https://github.com/maddox/magick-installer. I am on OSX Lion ... .9.3-p125/bin/ruby See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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407 views

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ruby - What's the best way to talk to a database while using Sinatra?

As I understand it, the Sinatra framework, unlike Rails, does not provide an ORM. In that case, how do you talk to ... apps that don't use a DB? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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