mgt c7 checkpoint 1

backend/.flaskenv

@@ -1,2 +1,3 @@
 FLASK_APP=microblog.py
+FLASK_DEBUG=0
 

backend/README.md

@@ -22,20 +22,27 @@ pip freeze > requirements.txt
 ```
 
 ## db cheat:
+After db schema change:
 ```
-flask db migrate -m "users table"
+flask db migrate -m "add users table"
 flask db upgrade
+```
 
-flask db downgrade [base]
+Dump data if db in good state:
+```
+flask db downgrade base
 flask db upgrade
+```
 
-full reset?
+Full reset:
+```
 rm app.db
 rm -r migrations
 flask db init
 flask db migrate
 flask db upgrade
 ```
+
 ## build notes:
 
 Dockerfile needs dockerignore or preferably explicitly defined copies for:

backend/app/__init__.py

@@ -11,5 +11,5 @@ migrate = Migrate(app, db)
 login = LoginManager(app)
 login.login_view = 'login'
 
-from app import routes, models
+from app import routes, models, errors
 

backend/app/errors.py

@@ -0,0 +1,13 @@
+from flask import render_template
+
+from app import app, db
+
+@app.errorhandler(404)
+def not_found_error(error):
+    return render_template('404.html'), 404
+
+@app.errorhandler(500)
+def internal_error(error):
+    db.session.rollback()
+    return render_template('500.html'), 500
+

backend/app/templates/404.html

@@ -0,0 +1,8 @@
+{% extends "base.html" %}
+
+{% block content %}
+
+	<h1>File Not Found</h1>
+	<p><a href="{{ url_for('index') }}">Back</a></p>
+
+{% endblock %}

backend/app/templates/500.html

@@ -0,0 +1,9 @@
+{% extends "base.html" %}
+
+{% block content %}
+
+	<h1>An unexpected error has occurred.</h1>
+	<p>Administrator has been notified.</p>
+	<p><a href="{{ url_for('index') }}">Back</a></p>
+
+{% endblock %}