Rails – check if record exists in has_many association
Try: current_user.items.exists?(params[:id]) Or current_user.items.exists?(@item.id)
ruby-on-rails
Removing the shadow from a button
Use border-style: .signup-success input[type=”submit”], .signup-success input[type=”submit”]:active, .signup-success input[type=”submit”]:focus { width: 80%; background: transparent; color: #00AA66; border-color: #00AA66; border-style: solid; } or combined version (border-style, border-width and border-color in one): border: 2px solid #00AA66;
rbenv: version `2.0.0′ is not installed
You can find a lot of information here: rbenv on github To list all available installation candidates: rbenv install -l To install a ruby version you need (for example): rbenv install 2.0.0-p643 So that you will only use this ruby version in this specific folder and not affect anything else you can do: rbenv local … Read more
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
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