luke0x/dev-notes.md

## dev-notes.md

      
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    Dev Notes

Rename App


Github

https://github.com/Elepath/keezy-api/settings


Heroku

https://dashboard.heroku.com/apps/keezy-api-staging/settings
https://dashboard.heroku.com/apps/keezy-api/settings


Local

cd ..; mv keezy-api keezy-web; cd keezy-web
git remote set-url staging git@heroku.com:keezy-web-staging.git
git remote set-url production git@heroku.com:keezy-web-production.git


Rename Postgresql user

psql template1 -c 'ALTER USER "keezy-api" RENAME TO "keezy-web"';
Rename Postgresql database

psql template1 -c 'ALTER DATABASE "keezy-api_development" RENAME TO "keezy-web_development"';
psql template1 -c 'ALTER DATABASE "keezy-api_test" RENAME TO "keezy-web_test"';
Sort shell output by number in the first column

cat lines |sort -n -k1,1

See 404s in Rails development environment

In config/development.rb:
config.consider_all_requests_local = false
Best monospaced fonts


Inconsolata-dz
Inconsolata
Consolas
Menlo

Style Atom scrollbar

::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: none;
}
::-webkit-scrollbar-thumb {
  background: rgb(106, 107, 108);
}

Style Atom Tree View

.tree-view {
  font-size: 12px;
}

Change Atom line height

.editor {
  line-height: 1.6;
}
.editor .cursor {
  line-height: 1.6;
}

Style Atom Find And Replace

.preview-pane .results-view .preview {
  font-family: Inconsolata-dz;
  font-size: 13px;
}

Fix Homebrew node package

#!/bin/bash

for man in 1 3 5 7; do
  ln -sf /usr/local/lib/node_modules/npm/man/man${man}/* /usr/local/share/man/man${man}
done

ln -sf /usr/local/lib/node_modules/npm/bin/npm-cli.js /usr/local/bin/npm

npm update npm -g

Uninstall node.js

#!/bin/sh
(( ${#} > 0 )) || {
  sudo ${0} sudo
  exit $?
}

[ -e /var/db/receipts/org.nodejs.pkg.bom ] || {
  echo 'Nothing to do.'
  exit 0
}

lsbom -f -l -s -pf /var/db/receipts/org.nodejs.pkg.bom \
| while read i; do
  rm /usr/local/${i}
done

rm -rf /usr/local/lib/node \
  /usr/local/lib/node_modules \
  /var/db/receipts/org.nodejs.*

exit 0

Match the beginning and end of Ruby strings


Match the beginning of a string: \A
Match the beginning of a line: ^
Match the end of a line: $
Match the end of a string: \Z

Choose a specific version of a file during a git rebase


Prefer the current branch's file: git checkout --ours file
Prefer the other branch's file: git checkout --ours file
Revert to the conflicted merge file provided by rebase: git checkout --conflict=merge file

Merge strategy for merging highly-divergent git branches

With git you have the opportunity to do it the way it should have originally been done, after the fact.
There is still work to do with the merge, but it is work that would have been needed to be done along the way anyhow.
The cost isn't over-paid, it's just paid late.

Revert to the last commit on master where all branches diverged
Merge the most-divergent feature branch onto master
For each other branch, rebase it onto master and merge it into master

Set a default Heroku app for a Git repository

Configure a default remote for the heroku command per git repository:
git config heroku.remote heroku-remote-name
Deploy to Heroku takes a long time

This is a limited problem and occurs when a large number of files change.
The Herkou deploy script runs rake assets:precompile to precompile files indicated in config.assets.precompile.
These files are included in the Heroku slug and copied to the dyno /app/public/assets/ directory.
The dyno filesystem keeps the 3 most-recent versions of each file on disk.
Only new and changed files are compiled and copied, so the time required is typically low but occasionally more.
Search a tree for files not having an extension in an array

find . -type f |grep -vE "\.(js|css|html)$"


v negates the match
E uses a regex

Rails asset pipeline precompilation fails on files lacking extensions


Sprockets known issue, won't fix: sstephenson/sprockets#347
Workaround with Heroku step 2 only: https://gist.github.com/afeld/5704079
config.assets.precompile defaults to all .js and .css files
Verify this will get all the files we need (this is what I actually incrementally used to review the list of files):
find . -type f |grep -vE "\.(js|css|html|css|html|erb|haml|png|gif|jpg|jpeg|svg|eot|otf|svc|woff|ttf|coffee|yml|md|ico|ai|eps|pdf|map|ts|map|sh|txt|rb|gemspec|php)$" |grep -vE "(README|gitignore|bower.json|LICENSE|Makefile|Rakefile|MANIFEST)"