Recent questions tagged ruby

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ruby - assign/replace params hash in rails

I have the code sequence below in a rails controller action. Before the IF, params contains the request parameters, ... '}} end 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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530 views

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ruby - Problems setting a custom primary key in a Rails 4 migration

I use postgresql 9.3, Ruby 2.0, Rails 4.0.0. After reading numerous questions on SO regarding setting the ... primary key. What am I missing? See Question&Answers more detail:os...

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

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484 views

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ruby - Using rbenv doesn't work with sudo?

Any commands that use sudo don't seem to work with RBenv. I'm trying to install ActiveRecord and it says I don' ... How can I get around this? See Question&Answers more detail:os...

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

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488 views

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ruby on rails - no such file to load -- bcrypt_ext (via devise)

I'm using database authentication in devise(current gem) on rails 3 and I get the following error when trying to ... doesn't solve the issue. 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 you access nested elements of a hash with a single string key?

I'm fooling around with Ruby and basically I have @trans = { :links => { :quick_notes => "aaaaaaa" } } ... links.quick_notes') Any ideas ? thanx See Question&Answers more detail:os...

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

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486 views

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ruby on rails - How to hide records, rather than delete them (soft delete from scratch)

Let's keep this simple. Let's say I have a User model and a Post model: class User < ActiveRecord::Base # ... feel I'm missing out on learning. See Question&Answers more detail:os...

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

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526 views

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ruby - Rails 3. getting Errno::EACCES Permission Denied when uploading files on production

The app works fine in development but in production I get Errno::EACCES Permission Denied error when I try to upload ... cache/#{model.id}" 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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ruby - attr_accessible in rails Active Record

When I use the attr_accessible to specify which fields from my Model I will expose, is it true for script/ ... as well through console ? See Question&Answers more detail:os...

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

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419 views

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ruby - DRY way to assign hash values to an object

I'm looking for a elegant way to assign the value stored inside an Hash into a pre-existed object. Just ... ] Thanks for your attention. Simone See Question&Answers more detail:os...

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

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370 views

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ruby - Error Installing Atomic

I'm trying to install gems to my new Ruby project using bundle install. I've set the version of Ruby using ... - does not handle spaces in path See Question&Answers more detail:os...

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

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418 views

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ruby - What's the point of freezing your Rails version/gems?

What does that mean? In the instructions for a project, it said to "freeze the Rails gems". Is that ... version? What's freezing about? See Question&Answers more detail:os...

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

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419 views

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ruby - Is there a cucumber hook to run before and after each feature

Is there a way to run specific code block before and after each cucumber feature with certain tag? Since setup ... run it before each scenario. See Question&Answers more detail:os...

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

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598 views

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ruby - How do I validate XHTML with nokogiri?

I've found a few posts alluding to the fact that you can validate XHTML against its DTD using the nokogiri gem. ... : 2.6.23 binding: extension See Question&Answers more detail:os...

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

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590 views

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ruby on rails - Apache's limit to POST request size

Is there any limit of the POST request size in apache? What is the default value of this limit and is ... on this server using passenger. See Question&Answers more detail:os...

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

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573 views

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ruby - How can I iterate through a MySQL result set?

Here is the code I'm using: # Run the query against the database defined in .yml file. # This is a Mysql: ... .tmtm.org/en/mysql/ruby/ 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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565 views

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ruby on rails 3 - How to use `to_sql` in AREL when using `average()`?

I am trying to the get SQL from AREL, but it does not work in case I use average(:stars) : This works: ... ? How to get the generated SQL ? See Question&Answers more detail:os...

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

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488 views

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ruby - Problem with quantifiers and look-behind

### Ruby 1.8.7 ### require 'rubygems' require 'oniguruma' # for look-behind Oniguruma::ORegexp.new('h(? ... using quantifiers with look-behind? See Question&Answers more detail:os...

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

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654 views

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ruby on rails - Invalid gemspec -Illformed requirement ["#<YAML::Syck::DefaultKey:0xb5f9c990> 3.2.0"]

Invalid gemspec in [/usr/lib/ruby/gems/1.8/specifications/activemodel-3.2.0.gemspec]: Illformed requirement ["# ... the message for most of them See Question&Answers more detail:os...

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

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714 views

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ruby on rails - Library not loaded: libpq.5.dylib

I have app that is running Ruby 1.9.2, Rails 3, and postgreSQL 8.3. It was originally setup and working with ... window, I get the same errors. 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 - Setter method (assignment) with multiple arguments

I have a custom class and want to be able to override the assignment operator. Here is an example: class ... this work are highly 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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445 views

1 answer

ruby - Sinatra clears session on post

enable :sessions set :session_secret, 'secret' post '/login' do session[:loggedInUser] = jsondata['username']. ... instead of enable :sessions: See Question&Answers more detail:os...

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

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553 views

1 answer

ruby - RAILS: How to get has_many associations of a model

how I can get the has_many associations of a model? For example if I have this class: class A < ActiveRecord:: ... ,C] Is it possible? 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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470 views

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ruby - Parse a date in rails

I have a date (Which is actually parsed from a PDF) and it could be any of the following format: MM/DD/YYYY MM/ ... I'm using ruby on rails 3.2. See Question&Answers more detail:os...

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

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470 views

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ruby on rails - bundler/setup (LoadError)

I cloned a repository and tried to run rails s. However, I received the following error: /Users/me/.rbenv/ ... I feel I need some direction. See Question&Answers more detail:os...

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

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824 views

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ruby on rails - How do you diagnose a 500 error on Heroku when there is no error message in the logs?

I have a Rails app on Heroku that is serving 500 errors at random intervals. Web pages will display "Internal ... how to diagnose this issue. See Question&Answers more detail:os...

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

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671 views

1 answer

ruby - What STDOUT.sync = true means?

I am reading source code for god A process monitoring framework in Ruby and found this STDOUT.sync = true. I' ... this line? 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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1.0k views

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ruby on rails - Cannot define multiple 'included' blocks for a Concern (ActiveSupport::Concern::MultipleIncludedBlocks) with cache_classes = true

I have a certain module which is used in a Rails 4.1.1 application module A extend ActiveSupport::Concern ... classes is done by Rails? See Question&Answers more detail:os...

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

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564 views

1 answer

ruby on rails - Using Devise 1.3 to authenticate JSON login requests

I am new to rails. I am trying to write an API for a mobile application which authenticates using JSON. I ... some sample code? Thanks! Satyam See Question&Answers more detail:os...

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

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