title: SqlAlchemy not using utf8 charset even if specified
body: <p>I'm using Flask with Flask-SqlAlchemy with MySQL and my connection string does have the <code>charset-utf8</code> parameter on my connection string.</p>
  
  <p>I'm also using reflection and my Model is specified as this:</p>
  
  <pre><code>class Value(db.Model):
      __bind_key__ = 'values'
      __tablename__ = 'values'
  </code></pre>
  
  <p>I've also tried the trick of putting <code># -*- coding:utf8 -*-</code> inside my files but I'm still getting these stacktraces:</p>
  
  <pre><code>Traceback (most recent call last):
    File "/home/numkem/src/sd/venv/lib/python2.7/site-packages/flask/app.py", line 1836, in __call__
      return self.wsgi_app(environ, start_response)
    File "/home/numkem/src/sd/venv/lib/python2.7/site-packages/flask/app.py", line 1820, in wsgi_app
      response = self.make_response(self.handle_exception(e))
    File "/home/numkem/src/sd/venv/lib/python2.7/site-packages/flask/app.py", line 1403, in handle_exception
      reraise(exc_type, exc_value, tb)
    File "/home/numkem/src/sd/venv/lib/python2.7/site-packages/flask/app.py", line 1817, in wsgi_app
      response = self.full_dispatch_request()
    File "/home/numkem/src/sd/venv/lib/python2.7/site-packages/flask/app.py", line 1477, in full_dispatch_request
      rv = self.handle_user_exception(e)
    File "/home/numkem/src/sd/venv/lib/python2.7/site-packages/flask/app.py", line 1381, in handle_user_exception
      reraise(exc_type, exc_value, tb)
    File "/home/numkem/src/sd/venv/lib/python2.7/site-packages/flask/app.py", line 1475, in full_dispatch_request
      rv = self.dispatch_request()
    File "/home/numkem/src/sd/venv/lib/python2.7/site-packages/flask_debugtoolbar/__init__.py", line 125, in dispatch_request
      return view_func(**req.view_args)
    File "/usr/lib/python2.7/cProfile.py", line 149, in runcall
      return func(*args, **kw)
    File "/home/numkem/src/sd/application/views/player.py", line 54, in player_show
      return render_template('player/show.html', **locals())
    File "/home/numkem/src/sd/venv/lib/python2.7/site-packages/flask/templating.py", line 128, in render_template
      context, ctx.app)
    File "/home/numkem/src/sd/venv/lib/python2.7/site-packages/flask/templating.py", line 110, in _render
      rv = template.render(context)
    File "/home/numkem/src/sd/venv/lib/python2.7/site-packages/jinja2/environment.py", line 969, in render
      return self.environment.handle_exception(exc_info, True)
    File "/home/numkem/src/sd/venv/lib/python2.7/site-packages/jinja2/environment.py", line 742, in handle_exception
      reraise(exc_type, exc_value, tb)
    File "/home/numkem/src/sd/application/templates/player/show.html", line 1, in top-level template code
      {% extends "base.html" %}
    File "/home/numkem/src/sd/application/templates/base.html", line 62, in top-level template code
      {% block body %}{% endblock %}
    File "/home/numkem/src/sd/application/templates/player/show.html", line 27, in block "body"
      &lt;td&gt;{{ field.values }}&lt;/td&gt;
  UnicodeEncodeError: 'ascii' codec can't encode character u'\xe1' in position 16: ordinal not in range(128)
  </code></pre>
  
  <p>Why is the charset ignored on connection? Shouldn't it be set by the connection string? Maybe it's just not something that possible/supported when using reflections.</p>
  
  <p>Thanks!</p>