rails generate migration enable_pgcrypto_extension
class EnablePgcryptoExtension < ActiveRecord::Migration[5.1]
def change
enable_extension 'pgcrypto'
end
end
<!-- Code from d3-graph-gallery.com --> | |
<!DOCTYPE html> | |
<meta charset="utf-8" /> | |
<!-- Load d3.js --> | |
<script src="https://d3js.org/d3.v4.js"></script> | |
<!-- Create a div where the graph will take place --> | |
<div id="my_dataviz"></div> |
rails generate migration enable_pgcrypto_extension
class EnablePgcryptoExtension < ActiveRecord::Migration[5.1]
def change
enable_extension 'pgcrypto'
end
end
https://www.youtube.com/watch?v=RS36gBEp8OI&feature=youtu.be | |
make the state and amethod that change it in parent | |
-> | |
send the method that manipulate state to children | |
-> | |
children then call the method |
cd /mnt/$yourdrivealphabet | |
default: &default | |
adapter: postgresql | |
encoding: unicode | |
# For details on connection pooling, see Rails configuration guide | |
# http://guides.rubyonrails.org/configuring.html#database-pooling | |
pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %> | |
username: username in postgres windows | |
password: pass in postgres windows |
files.download('example.txt') # from colab to browser download |
aws s3 source tujuan | |
example | |
aws s3 sync s3://mybucket . | |
output | |
download: s3://mybucket/test.txt to test.txt | |
download: s3://mybucket/test2.txt to test2.txt |
Method | Uses Default Accessor | Saved to Database | Validations | Callbacks | Touches updated_at | Readonly check |
---|---|---|---|---|---|---|
attribute= |
Yes | No | n/a | n/a | n/a | n/a |
write_attribute |
No | No | n/a | n/a | n/a | n/a |
update_attribute |
Yes | Yes | No | Yes | Yes | Yes |
attributes= |
Yes | No | n/a | n/a | n/a | n/a |
update |
Yes | Yes | Yes | Yes | Yes | Yes |
update_column |
No | Yes | No | No | No | Yes |
update_columns |
No | Yes | No | No | No | Yes |
User::update |
Yes | Yes | Yes | Yes | Yes | Yes |
heroku pg:backups:capture | |
heroku pg:backups:download | |
pg_restore --verbose --clean --no-acl --no-owner -h localhost -d rails_development latest.dump |
parse_git_branch() { | |
git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/ (\1)/' | |
} | |
PS1="${debian_chroot:+($debian_chroot)}\w\$(parse_git_branch) $ " |