Disable django-haystack During Testing

I use django-haystack and elasticsearch for the search engine in our apps. But I don’t want my model that registered to haystack do indexing during the testing. I avoid haystack indexing by adding these following lines of code below in my settings.py.

import sys

TESTING = 'test' in sys.argv
if TESTING:
    HAYSTACK_SIGNAL_PROCESSOR = 'haystack.signals.BaseSignalProcessor'
    HAYSTACK_CONNECTIONS['default'] = {
        'ENGINE': 'haystack.backends.simple_backend.SimpleEngine',
    }

Reference: https://stackoverflow.com/q/33108569/1936697

Fix: Failed to install psycopg2 on Docker using Alpine Linux

I got this error when building my docker images using Linux alpine.

Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-install-00rq050n/psycopg2/

And I fixed the issue by following this github issue https://github.com/frol/docker-alpine-python3/issues/1#issuecomment-180163577

MariaDB: Fix “Can’t read dir of ‘/usr/local/etc/my.cnf.d'” on OSX

https://github.com/Homebrew/legacy-homebrew/issues/31760#issuecomment-60114392

Remove systemd Services in Ubuntu

https://superuser.com/a/936976/583463

Split Camel Case String in Python

import re

def camel_case_split(identifier):
    matches = re.finditer('.+?(?:(?<=[a-z])(?=[A-Z])|(?<=[A-Z])(?=[A-Z][a-z])|$)', identifier)
    return [m.group(0) for m in matches]

Reference: https://stackoverflow.com/a/29920015/1936697

Fixing Git: refusing to merge unrelated histories

I have a new project and I add git repo later on after the project finished.
After setup remote repo to my project, I got this kind of error when pulling data from the repository.

fatal: refusing to merge unrelated histories

The problem fixed by adding this argument to git command “–allow-unrelated-histories”.

$ git pull upstream master --allow-unrelated-histories

Reference: https://stackoverflow.com/a/37938036/1936697

Copying File from Remote Server to Local Machine

Here’s a snippet how to get your files from remote server to your local machine using scp.

Copy to defined path.

$ scp user@host:/remote/file/path/data /local/target/destination/path

Copy to current directory.

$ scp user@host:/remote/file/path/data .