ruby-on-rails Archives - Page 3 of 19

Programming, ruby-on-rails

IT Nursery

Rails: Installing PG gem on OS X – failure to build native extension

It seems many others have had problems installing the pg gem. None of the solutions posed for others have worked for me. I ...

June 1, 2022
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Programming, ruby-on-rails

IT Nursery

Unable to install gem – Failed to build gem native extension – cannot load such file — mkmf (LoadError)

Ruby 1.9.3 The part of Gemfile #............... gem "pony" gem "bcrypt-ruby", :require => "bcrypt" gem "nokogiri" #.................. When I’m trying to install gems, ...

June 1, 2022
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Programming, ruby-on-rails

IT Nursery

invalid multibyte char (US-ASCII) with Rails and Ruby 1.9

I’m using Ruby 1.9.1 with Rails 2.3.4 My application is to handle text input If I try something like (the inside quotation marks ...

June 1, 2022
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Programming, ruby-on-rails

IT Nursery

Generate model in Rails using user_id:integer vs user:references

I’m confused on how to generate a model that belongs_to another model. My book uses this syntax to associate Micropost with User: rails ...

June 1, 2022
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Programming, ruby-on-rails

IT Nursery

Rails 4 Authenticity Token

I was working on a new Rails 4 app (on Ruby 2.0.0-p0) when I ran into some authenticity token problems. While writing a ...

May 31, 2022
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Programming, ruby-on-rails

IT Nursery

Rails ActiveRecord date between

I need to query comments made in one day. The field is part of the standard timestamps, is created_at. The selected date is ...

May 31, 2022
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Programming, ruby-on-rails

IT Nursery

How to determine if one array contains all elements of another array

Given: a1 = [5, 1, 6, 14, 2, 8] I would like to determine if it contains all elements of: a2 =...

May 31, 2022
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Programming, ruby-on-rails

IT Nursery

Validate uniqueness of multiple columns

Is there a rails-way way to validate that an actual record is unique and not just a column? For example, a friendship model ...

May 31, 2022
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Programming, ruby-on-rails

IT Nursery

Rails: How do I create a default value for attributes in Rails activerecord’s model? [duplicate]

This question already has answers here: Rails: How can I set default values in ActiveRecord? (29 answers) Closed 8 years ago. I want ...

May 30, 2022
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Programming, ruby-on-rails

IT Nursery

Rails – Nested includes on Active Records?

I have a list of events that I fetch. I’m trying to include every user associated to this event and every profile associated ...

May 30, 2022
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