Dealer — SCM revision helper in your projects. Just add SCM revision to your static paths and get automatic control at client browser caches:

Somewhere in templates:

<script src='/main.js?{{ request.revision }}'

On clientside:

<script src='/main.js?34jhfd45hd8'

Supported Git, Mercurial and simple revision parse by file.

• python 2.7, 3.5+

Dealer should be installed using pip:

pip install dealer

from dealer.git import git
print git.revision
print git.tag

# Auto parse repository type
from dealer.auto import auto
print auto.revision
print auto.tag

path — path to SCM repository (current dir by default)

from dealer.mercurial import Backend
hg = Backend('/path/to/hg/repo')

DEALER_TYPE — Type of SCM repository ('auto', 'git', 'mercurial', 'simple', 'env', 'null'). By default 'auto';

DEALER_PATH — Path to SCM. By default current dir;

DEALER_SILENT — Disable log warnings;

DEALER_BACKENDS — Backends for auto search by default ('git', 'mercurial', 'simple', 'env', 'null');

Append to your context processors:

...
context_processors = ['dealer.contrib.django.context_processor']

And use the REVISION and TAG variables in your templates:

<link href="/test.css?{{ REVISION }}" rel="stylesheet" type="text/css" media="screen" />
<script src="/test.js?{{ REVISION }}"></script>

Append to your settings:

MIDDLEWARE = ['dealer.contrib.django.Middleware']

And use in your views:

def view(request):
 return request.revision

Or in your templates by request.revision var.

DEALER_TYPE — Type of SCM repository ('auto', 'git', 'mercurial', 'simple', 'env', 'null'). By default 'auto' DEALER_PARAMS — Params for backend

In views:

from flask import Flask, g
from dealer.contrib.flask import Dealer
app = Flask('test')
Dealer(app)
assert app.revision
@app.route('/')
def usage_in_view():
 return g.revision

In templates:

<link href="/test.css?{{ REVISION }}" rel="stylesheet" type="text/css" media="screen" />

config.include('dealer.contrib.pyramid')

def myview(request):
 revision = request.registry.dealer.revision
 tag = request.registry.dealer.tag

In templates

Revision: {{DEALER_REVISION}}
Tag: {{DEALER_TAG}}

DEALER_TYPE = 'env' DEALER_PARAMS:

revision_env_keyname - Variable name for revision (default: DEALER_REVISION)

tag_env_keyname - Variable name for tag (default: DEALER_TAG)

Setup your revision and tag value in envirement variables. For example in Heroku.com:

heroku config:set DEALER_REVISION='3ffb6b6'
heroku config:set DEALER_TAG=v1_1

After that use dealer as described above.

If you have any suggestions, bug reports or annoyances please report them to the issue tracker at https://github.com/klen/Dealer/issues

Development of dealer happens at github: https://github.com/klen/dealer

• klen (Kirill Klenov)

Licensed under a BSD license.