Recent questions tagged Ruby

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ruby on rails - Excon::Errors::Forbidden (Expected(200) <=> Actual(403 Forbidden)

When I try to upload a picture to a "Car" object I'm denied access to S3. But the site images that are in ... help, doesn't seem like it would. See Question&Answers more detail:os...

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

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675 views

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ruby on rails - Devise doesn't redirect properly to stored location when using omniauth provider like facebook

I have in my app some actions which are protected and need user authentication. Since I'm using devise, I use ... 404, :layout => false 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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398 views

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ruby - Rails form validation conditional bypass

I have a rails model that validates uniqueness of 2 form values. If these 2 values aren't unique the validation ... ideas on how 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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427 views

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ruby on rails - Devise call backs

Does devise have call backs when a user signs in and out? This is what I came up with: Warden::Manager. ... users that are currently signed 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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517 views

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ruby on rails - accepts_nested_attributes_for with has_many => :through Options

I have two models, links and tags, associated through a third, link_tags. The following code is in my Link ... for the basic has_many case. See Question&Answers more detail:os...

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

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442 views

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ruby on rails - How can I add localhost:3000 to Facebook App for development

I am working on a Rails 4 app. On my laptop, development is done at localhost:3000. The actual domain of the ... ", "code": 191 } } See Question&Answers more detail:os...

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

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628 views

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ruby on rails 3 - Controller path for nested resource - undefined method `<controller>_path'

I'm having trouble displaying my form at /users/2/friends/new. I'm receiving undefined method `friends_path' for #< ... is my first rails 3 app. See Question&Answers more detail:os...

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

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453 views

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ruby - NOTICES for sequence after running migration in rails on postgresql Application

When i run my migration in Rails application on postgresql i got following NOTICES NOTICE: CREATE TABLE will ... not avoided? Regards, Salil See Question&Answers more detail:os...

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

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796 views

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ruby on rails - validates associated with model's error message

I have two model as follows class User < ActiveRecord::Base validates_associated :account end class Account < ... the three validations failed" See Question&Answers more detail:os...

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

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487 views

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ruby - Why is Rake not able to invoke multiple tasks consecutively?

I have a Rake task which I have simplified below. I'm using Ruby 1.9 on Windows. Perhaps you would like to ... "Hello level #{args.level}" 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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488 views

1 answer

ruby on rails - get attribute of ActiveRecord object by string

It is probably a really simple thing but can't find a solution. I have an ActiveRecord object and want to ... attribute_name) => "John" 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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646 views

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ruby on rails - Do I have to manually uninstall all dependent gems?

I tried to uninstall datamapper using the command gem uninstall dm-core. But it seems that a whole bunch of ... :> Am I missing something? See Question&Answers more detail:os...

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

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360 views

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ruby on rails - When (if) to consolidate ActiveRecord migrations?

As I move through the iterations on my application*(s) I accumulate migrations. As of just now there are 48 ... would seem to fit the 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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506 views

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ruby on rails - RoR select_tag default value & options

How can I set a default value using select_tag, and how can I keep the options open on page load? See Question&Answers more detail:os...

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

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723 views

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ruby on rails - can you use activerecord to find substring of a field? (quick & dirty keyword finder)

Suppose a database contains a field 'keywords' and sample records include: "pipe wrench" "monkey wrench" " ... a quick concept prototype) See Question&Answers more detail:os...

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

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1.3k views

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ruby on rails - ERROR: delete on table violates foreign key constraint. Key id is still referenced from table (many)

I'm working with Rails and PostgreSQL and have a basic one-to-many relationship going on, one Auction has many ... - still get the same error. See Question&Answers more detail:os...

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

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778 views

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ruby - Rails Unable to convert unpermitted parameters to hash

I am trying to implement a simple search and sort for my webapp. I am following the railscast and this railscast. ... ? What I am doing wrong? See Question&Answers more detail:os...

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

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523 views

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ruby - Error Installing Jekyll - Native Extension Build

I'm having some trouble installing jekyll. Can't quite figure out how to patch the missing link. I think it's an ... of ruby I'm using via rvm? See Question&Answers more detail:os...

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

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643 views

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ruby on rails - How to create a grouped select box using simple_form?

I'm using simple_form gem for creating Rails forms. http://github.com/plataformatec/simple_form All is great, except ... docs or by google-ing. See Question&Answers more detail:os...

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

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592 views

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ruby - How do I make a POST request with open-uri?

Is it possible to make a POST request from Ruby with open-uri? See Question&Answers more detail:os...

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

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438 views

1 answer

ruby - Including one erb file into another

I'm writing a command-line tool that will ultimately output an HTML report. The tool is written in Ruby. (I ... supposed to be done? 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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347 views

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ruby on rails - Understanding how establish_connection works in ActiveRecord

This code was taken from ActiveRecord 2.3.14's gem class ConnectionHandler def establish_connection(name, spec) ... to catch this case? See Question&Answers more detail:os...

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

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415 views

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ruby on rails - Thin vs Unicorn on Heroku

Just wanted to get people's opinions on using Unicorn vs Thin as a rails server. Most of the articles/ ... . 4 Unicron workers on Heroku 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 on rails - Heroku Error R14 (Memory quota exceeded): How do I solve this?

I have a Rails 3.1 app on Heroku. I am seeing a lot of these errors: Error R14 (Memory quota exceeded) Typically the ... :29:11+00:00 app[web.1]: Oink Log Entry Complete 20...

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

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383 views

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ruby - Change value of array element which is being referenced in a .each loop?

How do I get the following to happen: I want to change the value of an array element which is being ... to look up something so general. 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

1 answer

ruby - Rails 4 migration: how to reorder columns

I learned that add_column has an :after option to set where the column gets inserted. Too bad I learned ... migration to simply reorder columns? See Question&Answers more detail:os...

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

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438 views

1 answer

ruby on rails - rmagick and OS X Lion

Just upgraded (i.e. not a new install) to Lion from Leopard and my previously well-working rmagick now doesn't ... have a solution? 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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356 views

1 answer

ruby - Add method to an instanced object

obj = SomeObject.new def obj.new_method "do some things" end puts obj.new_method > "do some things" This works ... way of adding such a method? See Question&Answers more detail:os...

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

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