Add cascading delete to your EmpGroup model: class EmpGroup < ActiveRecord::Base has_many :emp_group_members, dependent: :delete_all end Or Are you calling delete method? you should call destroy instead. Use .destroy
I think this must be some kind of bug related to schema caching… this might work: User.connection.schema_cache.clear! User.reset_column_information (for Rails 3.2.2)
The rake task only clears out files that are stored on the filesystem in “#{Rails.root}/tmp/cache”. Here’s the code for that task. namespace :cache do # desc “Clears all files and directories in tmp/cache” task :clear do FileUtils.rm_rf(Dir[‘tmp/cache/[^.]*’]) end end https://github.com/rails/rails/blob/ef5d85709d346e55827e88f53430a2cbe1e5fb9e/railties/lib/rails/tasks/tmp.rake#L25-L30 Rails.cache.clear will do different things depending on your apps setting for config.cache_store. http://guides.rubyonrails.org/caching_with_rails.html#cache-stores If you … Read more
The code is okay but you are in the wrong directory. You must run these commands inside your rails project-directory. The normal way to get there from scratch is: $ rails new PROJECT_NAME $ cd PROJECT_NAME $ rails generate model ad \ name:string \ description:text \ price:decimal \ seller_id:integer \ email:string img_url:string
In your CSS: background-image: url(background.jpg); or background-image: url(/assets/background.jpg); In environments/production.rb: # Disable Rails’s static asset server (Apache or nginx will already do this) config.serve_static_assets = false # Compress JavaScripts and CSS config.assets.compress = true # Don’t fallback to assets pipeline if a precompiled asset is missed config.assets.compile = false # Generate digests for assets URLs … Read more
Reserved Word List ADDITIONAL_LOAD_PATHS ARGF ARGV ActionController ActionView ActiveRecord ArgumentError Array BasicSocket Benchmark Bignum Binding CGI CGIMethods CROSS_COMPILING Class ClassInheritableAttributes Comparable ConditionVariable Config Continuation DRb DRbIdConv DRbObject DRbUndumped Data Date DateTime Delegater Delegator Digest Dir ENV EOFError ERB Enumerable Errno Exception FALSE FalseClass Fcntl File FileList FileTask FileTest FileUtils Fixnum Float FloatDomainError GC Gem GetoptLong … Read more
render & render partial: render ‘some_view’ is a shorthand for render partial: ‘some_view’. render file: ‘view’ will look for a file view.html.erb and NOT _view.html.erb (.erb or any other renderer you use) render can pass local variables for the partial if you do not use collections or layouts, like render ‘some/path/to/my/partial’, custom_var: ‘Hello’ Passing local … Read more
You can run the code in the up method directly in rails console: >> ActiveRecord::Migration.remove_column :table_name, :column_name If you already have a migration file such as “db/migrate/20130418125100_remove_foo.rb“, you can do this: >> require “db/migrate/20130418125100_remove_foo.rb” >> RemoveFoo.up If you just want to do rake db:migrate, try this: >> ActiveRecord::Migrator.migrate “db/migrate”
The warning is caused by a call from within Rails itself. The warning has been fixed in Rails 3.2.13.