[ch_10] - add login route

Author: Jonah Kuria

webapp/vsearch_for_web.py

@@ -1,6 +1,7 @@
-from flask import Flask, render_template, request, escape
+from flask import Flask, render_template, request, escape, session
 from vsearch import search_for_letters
 from DBcm import UseDatabase
+from checker import check_logged_in
 
 app = Flask(__name__)
 
@@ -9,6 +10,11 @@
                           'password': 'vsearchpasswd',
                           'database': 'vsearchlogDB', }
 
+@app.route('/login')
+def do_login() -> str:
+    session['logged_in'] = True
+    return 'You are now logged in.'
+
 def log_request(req: 'flask_request', res: str) -> None:
     """Log details of the web request and the results."""
     with UseDatabase(app.config['dbconfig']) as cursor: