Lang url prefix

Makefile

@@ -1,7 +1,7 @@
 git_update="git fetch origin master && git reset --hard FETCH_HEAD"
 
 help:
-	return "Make tasks for deployment. Checkout the makefile content."
+	@echo "Make tasks for deployment. Checkout the makefile content."
 
 deploy:
 	ssh epidaurus "cd ~/tci-online && " ${git_update}

app.py

@@ -1,5 +1,5 @@
 from core import app
-from core.views import *
+from core import views, templates  # noqa: F401
 
 
 # WSGI

core/templates.py

@@ -0,0 +1,13 @@
+from flask import request
+from tcii18n.template import flask_methods
+
+from . import app
+
+
+def get_translations_file():
+    supported_languages = app.config.get('TRANSLATION_FILES').keys()
+    lang = (request.accept_languages.best_match(supported_languages) or
+            supported_languages[0])
+    return app.config.get('TRANSLATION_FILES').get(lang)
+
+flask_methods(app, get_translations_file)

core/views.py

@@ -1,16 +1,47 @@
-from flask import render_template, request, abort
+from flask import render_template, request, abort, redirect, url_for, g
 from tcidatabase.models import SurveyToken, Score
 from tcidata import get_tci
 
 from . import app
 
 
+"""
+The following 2 functions take care of automagically prepending the `lang_code`
+into the url and reading from it.
+See http://flask.pocoo.org/docs/0.12/patterns/urlprocessors/.
+"""
+
+
+@app.url_defaults
+def add_language_code(endpoint, values):
+    if 'lang_code' in values or not g.lang_code:
+        return
+    if app.url_map.is_endpoint_expecting(endpoint, 'lang_code'):
+        values['lang_code'] = g.lang_code
+
+
+@app.url_value_preprocessor
+def pull_lang_code(endpoint, values):
+    g.lang_code = (values.pop('lang_code',
+                              app.config.get('DEFAULT_LANGUAGE', 'en')))
+
+
 @app.route('/')
+def default_home():
+    return redirect(url_for('home'))
+
+
+@app.route('/<string:token>')
+def default_survey(token):
+    return redirect(url_for('survey', token=token))
+
+
+@app.route('/<string(length=2):lang_code>')
 def home():
     return render_template('error.html'), 401
 
 
-@app.route('/<string:token>')
+@app.route('/<lang_code>/<string:token>')
 def survey(token):
     try:
         token = SurveyToken.objects.get(key=token, usage_date=None)
@@ -25,7 +56,7 @@ def survey(token):
     return render_template('survey.html', questions=questions, token=token)
 
 
-@app.route('/end', methods=['post'])
+@app.route('/<lang_code>/end', methods=['post'])
 def end():
     token = SurveyToken.objects.get(key=request.form.get('token'))
     answers = [int(a) for a in request.form.get('answers').split(',')]

requirements.txt

@@ -1,4 +1,5 @@
 -e git+ssh://bitbucket.org/anthropedia/tci-database.git#egg=tci-database
 -e git+ssh://bitbucket.org/anthropedia/tci-data.git#egg=tci-data
+-e git+https://github.com/anthropedia/tci-i18n.git#egg=tci-i18n
 
 Flask==0.12

settings.example.py

@@ -9,3 +9,10 @@
   'host': 'localhost',
   'port': 27017,
 }
+
+TRANSLATION_FILES = {
+    'en': '/path/to/my/transfile.en.csv',
+    'fr': '/path/to/my/transfile.fr.csv',
+    'sv': '/path/to/my/transfile.sv.csv',
+}
+DEFAULT_LANGUAGE = 'en'

templates/error.html

@@ -1,7 +1,7 @@
 {% extends 'layout.html' %}
 {% block main %}
 <section>
-  <h2>Oops, the test didn't load.</h2>
+  <h2>{{ trans("Oops, the test didn't load.") }}</h2>
   <p>There are a couple of reasons this might happen.</p>
   <p>Please double-check that you are using a new valid link and not an old test.</p>
   <p>Otherwise, you might have an invalid token. If you are sure you have the good link,