ruby-on-rails Archives - Page 4 of 19

Programming, ruby-on-rails

IT Nursery

Rails :dependent => :destroy VS :dependent => :delete_all

In rails guides it’s described like this: Objects will be in addition destroyed if they’re associated with :dependent => :destroy, and deleted if ...

May 30, 2022
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Programming, ruby-on-rails

IT Nursery

Rails find_or_create_by more than one attribute?

There is a handy dynamic attribute in active-record called find_or_create_by: Model.find_or_create_by_<attribute>(:<attribute> => "") But what if I need to find_or_create by more than ...

May 30, 2022
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Programming, ruby-on-rails

IT Nursery

What is causing this ActiveRecord::ReadOnlyRecord error?

This follows this prior question, which was answered. I actually discovered I could remove a join from that query, so now the working ...

May 30, 2022
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Programming, ruby-on-rails

IT Nursery

delete_all vs destroy_all?

I am looking for the best approach to delete records from a table. For instance, I have a user whose user ID is ...

May 30, 2022
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Programming, ruby-on-rails

IT Nursery

What do the &,

Up until now I have only used database.yml with each parameter called out explicitly, in the file below it uses some characters I ...

May 29, 2022
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Programming, ruby-on-rails

IT Nursery

Rails: How to reference images in CSS within Rails 4

There’s a strange issue with Rails 4 on Heroku. When images are compiled they have hashes added to them, yet the reference to ...

May 29, 2022
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Programming, ruby-on-rails

IT Nursery

Rails new vs create

Why is there a need to define a new method in RESTful controller, follow it up with a create method? Google search didn’t ...

May 29, 2022
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Programming, ruby-on-rails

IT Nursery

Passing parameters in rails redirect_to

How do we pass parameters in redirect_to in rails? I know we can pass id using this: redirect_to :action => action_name,:id => 3 ...

May 29, 2022
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Programming, ruby-on-rails

IT Nursery

Rails get index of “each” loop [duplicate]

This question already has answers here: Finding out current index in EACH loop (Ruby) [duplicate] (2 answers) Automatic counter in Ruby for each? ...

May 29, 2022
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Programming, ruby-on-rails

IT Nursery

Ruby: Is there an opposite of include? for Ruby Arrays?

I’ve got the following logic in my code: if !@players.include?(p.name) ... end @players is an array. Is there a method so I can ...

May 29, 2022
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