From 5740a4f42a39692594343a58ca620ff4b225ad55 Mon Sep 17 00:00:00 2001
From: Andrew Plummer <plummer574@gmail.com>
Date: Sat, 25 Aug 2018 17:19:10 +0100
Subject: [PATCH] Example: sortable sqlalchemy

---
 examples/sortable_sqlalchemy.py | 69 +++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 examples/sortable_sqlalchemy.py

diff --git a/examples/sortable_sqlalchemy.py b/examples/sortable_sqlalchemy.py
new file mode 100644
index 0000000..d532bb8
--- /dev/null
+++ b/examples/sortable_sqlalchemy.py
@@ -0,0 +1,69 @@
+from __future__ import print_function
+
+from flask import Flask, url_for, request
+from flask_sqlalchemy import SQLAlchemy
+from flask_table import Table, Col
+
+
+# Some application and database setup. This should be taken care of
+# elsewhere in an application and is not specific to the tables. See
+# Flask-SQLAlchemy docs for more about what's going on for this first
+# bit.
+app = Flask(__name__)
+app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite://'
+# To suppress a warning. Not important.
+app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
+db = SQLAlchemy(app)
+
+
+# An example model
+class User(db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    username = db.Column(db.String(80), unique=True)
+    email = db.Column(db.String(120), unique=True)
+
+    def __init__(self, username, email):
+        self.username = username
+        self.email = email
+
+    def __repr__(self):
+        return '<User %r>' % self.username
+
+
+# Create the database, and put some records in it.
+db.create_all()
+
+user1 = User('user1', 'test1@example.com')
+user2 = User('user2', 'test2@example.com')
+
+db.session.add(user1)
+db.session.add(user2)
+db.session.commit()
+
+
+# Define a table, then pass in the database records
+class UserTable(Table):
+    username = Col('Username')
+    email = Col('Email')
+    allow_sort = True
+
+    def sort_url(self, col_key, reverse=False):
+        return url_for('index', sort=col_key, direction='desc' if reverse else 'asc')
+
+
+@app.route('/')
+def index():
+    sort_column = request.args.get('sort') or 'username'
+    sort_reverse = request.args.get('direction') == 'desc'
+
+    order_by = '{}{}'.format(sort_column, ' desc' if sort_reverse else '')
+
+    users = User.query.order_by(order_by)
+    table = UserTable(users, sort_by=sort_column, sort_reverse=sort_reverse)
+
+    # You would usually want to pass this out to a template with
+    # render_template.
+    return table.__html__()
+
+if __name__ == '__main__':
+    app.run(debug=True)