Instance | Branch |
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=Navigating= | |
visit('/projects') | |
visit(post_comments_path(post)) | |
=Clicking links and buttons= | |
click_link('id-of-link') | |
click_link('Link Text') | |
click_button('Save') | |
click('Link Text') # Click either a link or a button | |
click('Button Value') |
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#Model | |
@user.should have(1).error_on(:username) # Checks whether there is an error in username | |
@user.errors[:username].should include("can't be blank") # check for the error message | |
#Rendering | |
response.should render_template(:index) | |
#Redirecting | |
response.should redirect_to(movies_path) |
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Notes on how to use AWS SNS: | |
1. Subscribe an HTTP endpoint (i.e. http://myhost/sns_endpoint) on AWS Console | |
2. AWS will send subscription confirmation right away | |
3. SNS_controller responds to subscription confirmation by sending confirmation using Fog. | |
4. Once AWS is happy, you can start sending notifications to your end point via SNS. |
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require "active_record" | |
namespace :db do | |
db_config = YAML::load(File.open('config/database.yml')) | |
db_config_admin = db_config.merge({'database' => 'postgres', 'schema_search_path' => 'public'}) | |
desc "Create the database" | |
task :create do | |
ActiveRecord::Base.establish_connection(db_config_admin) |
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RSpec.shared_context "without foreign key constraints", :disable_foreign_keys do | |
def without_foreign_key_checks | |
DB.run('SET foreign_key_checks = 0;') | |
yield | |
ensure | |
DB.run('SET foreign_key_checks = 1;') | |
end | |
around(:example) { |ex| without_foreign_key_checks(&ex) } | |
end |
TL;DR
Create a backup:
pg_dumpall > mybackup.sql
Perform the upgrade:
sudo pg_dropcluster 9.4 main --stop
#SOLID Principles with ruby examples
##SRP - Single responsibility principle A class should have only a single responsibility.
Every class should have a single responsibility, and that responsibility should be entirely encapsulated. All its services should be narrowly aligned with that responsibility, this embrace the high cohesion.
##OCP - Open/closed principle Software entities should be open for extension, but closed for modification.
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