feature #617 Updated the application to use Symfony Flex (javiereguiluz)

This PR was squashed before being merged into the master branch (closes #617).

Discussion
----------

Updated the application to use Symfony Flex

This fixes #616.

-----

The application works, but I need to check tests because there were some issues with the `dama/doctrine-test-bundle` dependency used to run tests.

-----

When testing this locally, in your .env file, you must use an absolute file path to define the SQLite path. Otherwise you'll see this error:

```
An exception occurred in driver: SQLSTATE[HY000] [14] unable to open database file
```

This is a known limitation of DotEnv and we're working on it.

Commits
-------

372ddae Updated the application to use Symfony Flex

Author: javiereguiluz

.env.dist

@@ -0,0 +1,23 @@
+# This file is a "template" of which env vars needs to be defined in your configuration or in an .env file
+# Set variables here that may be different on each deployment target of the app, e.g. development, staging, production.
+# https://symfony.com/doc/current/best_practices/configuration.html#infrastructure-related-configuration
+
+###> symfony/framework-bundle ###
+APP_ENV=dev
+APP_DEBUG=1
+APP_SECRET=67d829bf61dc5f87a73fd814e2c9f629
+###< symfony/framework-bundle ###
+
+###> doctrine/doctrine-bundle ###
+# Format described at http://docs.doctrine-project.org/projects/doctrine-dbal/en/latest/reference/configuration.html#connecting-using-a-url
+# For a sqlite database, use: "sqlite:///%kernel.project_dir%/var/data.db"
+# Set "serverVersion" to your server version to avoid edge-case exceptions and extra database calls
+DATABASE_URL=sqlite:///var/data/blog.sqlite
+###< doctrine/doctrine-bundle ###
+
+###> symfony/swiftmailer-bundle ###
+# For Gmail as a transport, use: "gmail://username:password@localhost"
+# For a generic SMTP server, use: "smtp://localhost:25?encryption=&auth_mode="
+# Delivery is disabled by default via "null://localhost"
+MAILER_URL=null://localhost
+###< symfony/swiftmailer-bundle ###

.gitignore

@@ -1,4 +1,3 @@
-/app/config/parameters.yml
 /build/
 /node_modules/
 /phpunit.xml
@@ -15,7 +14,17 @@
 /var/sessions/*
 !var/sessions/.gitkeep
 !var/SymfonyRequirements.php
+/public/build/fonts/glyphicons-*
+/public/build/images/glyphicons-*
+###> symfony/framework-bundle ###
+.env
+/public/bundles/
+/var/
 /vendor/
-/web/bundles/
-/web/build/fonts/glyphicons-*
-/web/build/images/glyphicons-*
+###< symfony/framework-bundle ###
+###> symfony/phpunit-bridge ###
+/phpunit.xml
+###< symfony/phpunit-bridge ###
+###> symfony/web-server-bundle ###
+.web-server-pid
+###< symfony/web-server-bundle ###

.php_cs.dist

@@ -11,12 +11,12 @@ COMMENT;
 
 $finder = PhpCsFixer\Finder::create()
     ->in(__DIR__)
+    ->exclude('config')
     ->exclude('var')
-    ->exclude('web/bundles')
-    ->exclude('web/css')
-    ->exclude('web/fonts')
-    ->exclude('web/js')
-    ->notPath('web/config.php')
+    ->exclude('public/bundles')
+    ->exclude('public/css')
+    ->exclude('public/fonts')
+    ->exclude('public/js')
 ;
 
 return PhpCsFixer\Config::create()

.travis.yml

@@ -8,9 +8,6 @@ cache:
 matrix:
   fast_finish: true
   include:
-    - php: 5.5
-    - php: 5.6
-    - php: 7.0
     - php: 7.1
 
 before_install:
@@ -21,15 +18,15 @@ install:
   - composer install
 
 script:
+  - cp .env.dist .env
   - ./vendor/bin/simple-phpunit
   # this checks that the source code follows the Symfony Code Syntax rules
   - ./vendor/bin/php-cs-fixer fix --diff --dry-run -v
   # this checks that the YAML config files contain no syntax errors
-  - ./bin/console lint:yaml app/config
-  - ./bin/console lint:yaml @CodeExplorerBundle
+  - ./bin/console lint:yaml config
   # this checks that the Twig template files contain no syntax errors
-  - ./bin/console lint:twig app/Resources @CodeExplorerBundle
+  - ./bin/console lint:twig templates
   # this checks that the XLIFF translations contain no syntax errors
-  - ./bin/console lint:xliff app/Resources
+  - ./bin/console lint:xliff translations
   # this checks that the application doesn't use dependencies with known security vulnerabilities
   - ./bin/console security:check --end-point=http://security.sensiolabs.org/check_lock

Makefile

@@ -0,0 +1,46 @@
+ifndef APP_ENV
+	include .env
+endif
+
+###> symfony/framework-bundle ###
+CONSOLE := $(shell which bin/console)
+sf_console:
+ifndef CONSOLE
+	@printf "Run \033[32mcomposer require cli\033[39m to install the Symfony console.\n"
+endif
+
+cache-clear:
+ifdef CONSOLE
+	@$(CONSOLE) cache:clear --no-warmup
+else
+	@rm -rf var/cache/*
+endif
+.PHONY: cache-clear
+
+cache-warmup: cache-clear
+ifdef CONSOLE
+	@$(CONSOLE) cache:warmup
+else
+	@printf "cannot warmup the cache (needs symfony/console)\n"
+endif
+.PHONY: cache-warmup
+
+serve_as_sf: sf_console
+ifndef CONSOLE
+	@${MAKE} serve_as_php
+endif
+	@$(CONSOLE) | grep server:start > /dev/null || ${MAKE} serve_as_php
+	@$(CONSOLE) server:start
+
+	@printf "Quit the server with \033[32;49mbin/console server:stop.\033[39m\n"
+
+serve_as_php:
+	@printf "\033[32;49mServer listening on http://127.0.0.1:8000\033[39m\n";
+	@printf "Quit the server with CTRL-C.\n"
+	@printf "Run \033[32mcomposer require symfony/web-server-bundle\033[39m for a better web server\n"
+	php -S 127.0.0.1:8000 -t public
+
+serve:
+	@${MAKE} serve_as_sf
+.PHONY: sf_console serve serve_as_sf serve_as_php
+###< symfony/framework-bundle ###