Rails Error Can’t Find freedesktop.org.xml
Found some links to shared-mime-info on the GitHub link I posted, and I solved the issue by running the command below and starting a new project: brew install shared-mime-info
ruby-on-rails
Rails pass params/arguments to ActiveRecord callback function
There are four types of callbacks accepted by the callback macros: Method references (symbol), callback objects, inline methods (using a proc), and inline eval methods (using a string). Try this? after_update -> { cache_bust(true) }
Active Admin: How to set page title?
Consolidating answers and adding a little: Most of this is on this page on the wiki (or I’ll put it there soon). Within the file that registers your model for activeadmin (e.g. app/admin/user.rb), you can have ActiveAdmin.register User do # a simple string index :title => “Here’s a list of users” do … end # … Read more
Upgrading Rails: What am I to do with new_framework_defaults file?
(Having just gone through a 4.2 to 5.2 Rails upgrade, I’ll write a more complete answer.) Rails 5.0 Starting with Rails 5, the Rails team decided to generate an initializer, config/initializers/new_framework_defaults.rb, that contained values for new configuration defaults. This file is generated for both new (rails new) Rails 5.0 applications and applications updated (rake app:update) … Read more
Is HTTP status 422 appropriate for records that fail uniqueness validation?
NB: tried to do a detailed answer below poke’s one, but it doesn’t seem to be possible, so I will answer here. I think using 422 for validation errors is fine. The Webdav RFC doesn’t say 422 means “semantic errors”, it says the server was “unable to process the contained instructions” (see https://www.rfc-editor.org/rfc/rfc4918#section-11.2). “Semantic errors” … Read more
postgres ‘psql’ command is not recognized in windows environment
Assuming you installed PostgreSQL on Windows with the PostgreSQL “One-click” installer packaged by EnterpriseDB, psql is not added to the PATH automatically. That’s partly because adding it to the path could otherwise cause confusion when people have multiple versions of PostgreSQL installed. You need to specify the full explicit path to psql, eg: “%PROGRAMFILES%\Postgresql\9.2\bin\psql.exe” or … Read more
How to extract all attributes with Rails Jbuilder?
Maybe you can use json.merge!. json.merge! notification.attributes https://github.com/rails/jbuilder/blob/master/lib/jbuilder.rb#L277
Read files in directory on ruby on rails
I suggest you use Dir.entries(“target_dir”) Check the documentation here
Case-insensitive unique index in Rails/ActiveRecord?
Since MySQL indexes are already case-insensitive, I’m guessing you’re dealing with PostgreSQL, which creates case-sensitive indexes by default. I’m answering here based on Rails 3.2.3 and PostgreSQL 8.4. It seems functional indexes are one more example of things that ActiveRecord can’t generate. Foreign keys and UUID columns are two more that come to mind. So … Read more
Rails Previous Sunday in Relation to Any DateTime
Rails has a convenience method for calculating the beginning of the week. irb(main):001:0> Date.today.beginning_of_week(:sunday) #=> Sun, 16 Dec 2012 See the Date Rails extensions for other possibilities: http://api.rubyonrails.org/classes/Date.html Update: Rails 5.2 adds convenience methods to find the next/previous occurrence of a day. [1] pry(main)> Date.today.prev_occurring(:sunday) #=> Sun, 29 Apr 2018 See the DateAndTime::Calculations documentation for … Read more