Recent questions tagged Ruby

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ruby on rails - Preload has_many associations with dynamic conditions

I have a Place model and an Event model. Places can have events that take place on a specific date. How can I set ... I found no way to do 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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669 views

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ruby - Creating a Capistrano task that performs different tasks based on role

I'm looking for a way to call a single Capistrano task to perform different things to different roles. Is ... specific task for each role? See Question&Answers more detail:os...

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

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706 views

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ruby on rails - ActionMailer: Default From: address?

Googled for this to no avail. Didn't find anything in the API either. I was expecting some kind of class ... , it could be called automatically. See Question&Answers more detail:os...

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

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873 views

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ruby on rails - rspec & devise test helpers

According to this from the devise wiki I should be able to use a login_user helper method in my controller tests. ... .0 devise 1.3.4 backtrace See Question&Answers more detail:os...

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

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515 views

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ruby on rails - How can I share the factories that I have in a GEM and use it in other project?

I have a gem that includes some Factories. The gem looks something like: . ├── Gemfile ├── Gemfile.lock ├── ... 've been struggling for 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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551 views

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ruby - Why are my BigDecimal objects initialized with unexpected rounding errors?

In Ruby 2.2.0, why does: BigDecimal.new(34.13985572755337, 9) equal 34.0 but BigDecimal.new(34.13985572755338, 9) ... this on a 64 bit machine. See Question&Answers more detail:os...

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

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556 views

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ruby on rails - How to convert from a string to object attribute name?

I am trying to convert a string value into a name of an attribute that belongs to an object. For example, in ... {column_array[i]}" 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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556 views

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ruby on rails - ROR + Unable to install tiny_tds

Here I am trying to fetch data from MS-SQL Server 2008 to my Rails application on Ubuntu 10. But I am unable to ... /bin/bundle:19:in `<main>' See Question&Answers more detail:os...

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

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539 views

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ruby - Problems installing gsl gem

I can succesfully install the gsl library in my home directory, but when I try to install the gsl gem I get a ... /gsl-1.14.7/ext/gem_make.out See Question&Answers more detail:os...

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

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672 views

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ruby on rails - Why do ActiveRecord callbacks require instance variables or instance methods to be prefixed with self keyword?

ActiveRecord has a few different callback methods used to simplify model logic. For example after_find and ... this behaviour. Cheers See Question&Answers more detail:os...

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

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765 views

1 answer

ruby - attr vs attr_accessor

In Ruby there are four different getter and setter methods for instance variables, attr, attr_reader, attr_writer, ... more or less redundant? See Question&Answers more detail:os...

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

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587 views

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ruby - Any way to determine which object called a method?

I'm hoping that Ruby's message-passing infrastructure means there might be some clever trick for this. How do I ... method I'm currently in? See Question&Answers more detail:os...

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

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635 views

1 answer

ruby on rails - How to "update_attributes" without executing "before_save"?

I have a before_save in my Message model defined like this: class Message < ActiveRecord::Base before_save lambda { ... executing foo and bar ? See Question&Answers more detail:os...

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

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813 views

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ruby on rails 3.1 - rake assets:precompile is slow

The command "rake assets:precompile" works very slow for me. Especially on my Amazon EC2 Micro production server ... same web site and servers. See Question&Answers more detail:os...

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

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827 views

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ruby on rails - Permission denied in tmp

I just deployed a Rails 3 app with Ruby 1.9.2. I have been getting several errors. application.css wasn't ... to fix this one. 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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584 views

1 answer

ruby - Download an image from a URL?

I am trying to use HTTP::get to download an image of a Google chart from a URL I created. This was my first ... write(resp.body) } } it worked. 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 - Match string that doesn't contain a specific word

I'm working with ruby with the match method and I want to match an URL that doesn't contain a certain string ... the 2nd ones should be matched See Question&Answers more detail:os...

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

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821 views

1 answer

ruby - Rails Fixtures not loading with rspec

So, I'm trying to learn the rspec BDD testing framework in the context of a rails project. The problem I'm ... . Any help would be 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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757 views

1 answer

ruby - Silencing Deprecation warnings in Rails 3

Can anyone tell me how to silence deprecation warinings in Rails 3? I have a few situations where it is ... from the dynamic_form plugin. 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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582 views

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ruby on rails - Rails3 Routes - Passing parameter to a member route

I would like to pass an extra parameter to a member route of a resource something like: resources :events do ... it really not 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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638 views

1 answer

ruby on rails - How to change "Devise: password reset instruction email's subject"

I'm just unable to change "password reset instruction" email's subject. I have changed notifer.rb in Mailer to ... it by pulling data from 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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765 views

1 answer

ruby on rails - RSpec: Stub chains with arguments?

Just wondering if/how arguments can be passed in rspec stub chains. To give an example, suppose I have the ... => true as stub conditions? See Question&Answers more detail:os...

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

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779 views

1 answer

ruby - Rails: Render view from outside controller

I'm trying to create an HTML string using a view. I would like to render this from a class that is ... to how ActionMailer does? 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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635 views

1 answer

ruby modules and classes same name in structure

I have a folder structure like the following in one of my projects: lib bar.rb bar other_bar.rb another_bar ... workaround for such a situation? See Question&Answers more detail:os...

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

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1.1k views

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ruby on rails - RSpec set session object

I'm trying to set a session object from my controller spec. it 'use invalid coupon' do session[:coupon] = ' ... string 'coupon', and test fails. See Question&Answers more detail:os...

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

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605 views

1 answer

ruby - Kernel#gets attempts to read file instead of standard input

I'm rather new to Ruby, and today I wrote an application which you can pass arguments to via ARGV. But ... these methods inside my application. See Question&Answers more detail:os...

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

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582 views

1 answer

ruby on rails - Upgrading to devise 3.1 => getting Reset password token is invalid

Solution Thanks to this gist form Steven Harman, I got it working. devise_mail_helpers.rb module Features module ... what I am 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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737 views

1 answer

ruby - Naming Boolean columns in Rails

Let's say I have a Dog and I want to store if it is trained in Rails. Conventionally, Ruby methods that ... some other alternative I'm 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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