ncole458

"""
Find user/database entries within a km radius based on long/lat co-ords.
i.e. return all objects where longlat lies within 10km of my current long/lat.
Using with Django REST Framework but approach is same for any similar req.
"""
import math

def get_queryset(self):
    user = self.request.user
    lat = self.request.query_params.get('lat', None)

ncole458

# Simple version of Django queryset for objects within X long/lat radius
import math

def get_queryset(self):
    user = self.request.user
    lat = self.request.query_params.get('lat', None)
    lon = self.request.query_params.get('long', None)

    if lat and lon:
        lat = float(lat)

ncole458

FIX CACHE ISSUES ON ANDROID – REACT NATIVE BUILD

cd android && cd app && rm -r build

cd android && ./gradlew clean

react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res

cd android &&chmod +x gradlew

ncole458

# Connect Multiple AWS Accounts
aws configure --profile <your-profile-name>

ncole458

change to postgres user and open psql prompt

sudo -u postgres psql postgres

list databases

postgres=# \l

list roles

ncole458

# Inline policy for aws-elasticbeanstalk-ec2-role

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "Stmt1409855610000",
            "Effect": "Allow",
            "Action": [
                "autoscaling:DescribeAutoScalingGroups"

ncole458

### Virtualenv
venv/

### PyCharm
.idea/

### Python
__pycache__/
*.py[cod]

ncole458

# test .encode() and str()
a_string = 'test éurope'
print('a_string normal: ', a_string)
a_string = 'test éurope'
print('a_string utf-8 encoded: ', a_string.encode('utf-8'))  # utf-8 is default so .encode() is same result
print('a_string ascii encoded: ', a_string.encode('ascii', 'replace'))  # with error, i.e. replace, ignore etc.
print('a_string str: ', str(a_string))

company = 'éuropean company'
pro_comp_name = 'a løng campaigné name'

ncole458

# sometimes Ember builds break due to npm &/or bower cache, node changes etc.
# running below usually fixing any cache issues

rm -rf node_modules/ bower_components/ tmp/ dist/
npm cache clear
bower cache clear
npm install && bower install
ember s

ncole458

# view container instances
docker container ls

# activate instance, i.e. nginx, django etc.
docker exec -i -t be821b60fa28 /bin/bash