Implemented balanced queue

models/database.py

 from flask.ext.login import UserMixin
 
+from datetime import datetime
+
 from shared import db
 
 class User(db.Model, UserMixin):
@@ -9,12 +11,71 @@ class User(db.Model, UserMixin):
     username = db.Column(db.String, unique=True)
     password = db.Column(db.String)
     roles = db.Column(db.PickleType)
+    temp_key = db.Column(db.String)
+    temp_key_timestamp = db.Column(db.DateTime)
     
     def __init__(self, fullname, username, password, roles=None):
         self.fullname = fullname
         self.username = username
         self.password = password
         self.roles = roles
+        self.temp_key = ""
+        self.temp_key_timestamp = datetime(1970, 1, 1, 0, 0)
+    
+    def __repr__(self):
+        return "<User(id={}, fullname='{}', username='{}', password'{}', roles{}, temp_key='{}', temp_key_timestamp={})>".format(
+            self.id, 
+            self.fullname, 
+            self.username, 
+            self.password, 
+            self.roles,
+            self.temp_key,
+            self.temp_key_timestamp
+        )
+
+
+class Speaker(db.Model):
+    __tablename__ = "speakers"
+    id = db.Column(db.Integer, primary_key=True)
+    name = db.Column(db.String, unique=True)
+    
+    def __init__(self, name):
+        self.name = name
+    
+    def __repr__(self):
+        return "<Speaker(id={}, name={})>".format(self.id, self.name)
+
+
+class Statement(db.Model):
+    __tablename__ = "statements"
+    id = db.Column(db.Integer, primary_key=True)
+    speaker = db.Column(db.Integer, db.ForeignKey("speakers.id"), nullable=False)
+    insertion_time = db.Column(db.DateTime)
+    executed = db.Column(db.Boolean)
+    execution_time = db.Column(db.DateTime)
+    
+    def __init__(self, speaker, insertion_time=None, executed=False, execution_time=None):
+        self.speaker = speaker
+        self.insertion_time = insertion_time or datetime.now()
+        self.executed = executed
+        self.execution_time = execution_time or datetime.now()
     
     def __repr__(self):
-        return "<User(id={}, fullname='{}', username='{}', password'{}', roles'{})>".format(self.id, self.fullname, self.username, self.password, self.roles)
+        return "<Statement(id={}, speaker={}, insertion_time={}, executed={}, execution_time={})>".format(
+            self.id, 
+            self.speaker,
+            self.insertion_time,
+            self.executed,
+            self.execution_time
+        )
+    
+    def dump(self):
+        return { "speaker": self.speaker, "insertion_time": self.insertion_time.timestamp(), "executed": self.executed, "execution_time": self.execution_time.timestamp() }
+    
+    def done(self):
+        if self.executed:
+            return False
+        self.executed = True
+        self.execution_time = datetime.now()
+        return True
+    

models/forms.py

@@ -21,3 +21,6 @@ class AdminUserForm(Form):
     fullname = StringField("Full name", validators=[InputRequired("Entering the name is required.")])
     username = StringField("Username", validators=[InputRequired("Entering the username is required.")])
     roles = SelectMultipleField("User roles", choices=[(x.lower().strip(), x) for x in shared.roles])
+
+class AddStatementForm(Form):
+    speaker_name = StringField("Speaker", validators=[InputRequired("Entering the speaker is required.")])

modules/speech.py

+from flask import Blueprint, render_template, redirect, url_for, request, flash, abort, send_file, Response
+from flask.ext.login import login_required
+
+from models.database import User, Statement, Speaker
+from models.forms import AddStatementForm
+
+from shared import db, admin_permission, user_permission
+
+from datetime import datetime
+import json
+
+speech = Blueprint("speech", __name__)
+
+def transpose(arr):
+    print(list)
+    return list(map(list, zip(*arr)))
+
+def query_statements(mode):
+    statements = []
+    if mode == "pending":
+        statements = db.session.query(Statement, Speaker, db.func.count(Statement.speaker).label("total")).group_by(Speaker.id).join(Speaker).order_by("total ASC", Statement.insertion_time).all()
+    elif mode == "all":
+        statements = db.session.query(Statement, Speaker).join(Speaker).order_by(Statement.insertion_time).all()
+    elif mode == "past":
+        statements = db.session.query(Statement, Speaker).join(Speaker).filter(Statement.executed == True).order_by(Statement.execution_time).all()
+    return statements
+
+@speech.route("/index")
+def index():
+    mode = request.args.get("mode", "pending")
+    statements = query_statements(mode)
+    add_form = AddStatementForm()
+    current = ".index"
+    return render_template("speech_index.html", statements=statements, add_form=add_form, current=current)
+
+@speech.route("/show")
+def show():
+    mode = request.args.get("mode", "pending") 
+    statements = query_statements(mode)
+    current = ".show"
+    return render_template("speech_show.html", statements=statements, current=current, mode=mode)
+
+@speech.route("/update")
+def update():
+    mode = request.args.get("mode", "pending")
+    statements = query_statements(mode)
+    return render_template("speech_update_show.html", statements=statements, mode=mode)
+
+
+@speech.route("/add", methods=["GET", "POST"])
+@user_permission.require()
+def add():
+    speaker_name = request.args.get("speaker", None)
+    add_form = AddStatementForm()
+    if add_form.validate_on_submit():
+        speaker_name = add_form["speaker_name"].data
+    if speaker_name is None:
+        flash("Missing speaker name", "alert-error")
+        return redirect(url_for(".show"))
+    speaker = Speaker.query.filter_by(name=speaker_name).first()
+    if not speaker:
+        speaker = Speaker(speaker_name)
+        db.session.add(speaker)
+        db.session.commit()
+    if Statement.query.filter_by(speaker=speaker.id).filter_by(executed=False).count() > 0:
+        flash("Speaker already listet", "alert-error")
+        return redirect(url_for(request.args.get("next") or ".show"))
+    statement = Statement(speaker.id)
+    db.session.add(statement)
+    db.session.commit()
+    mode = request.args.get("mode", "pending")
+    return redirect(url_for(request.args.get("next") or ".index", mode=mode))
+
+
+@speech.route("/cancel")
+@user_permission.require()
+def cancel():
+    statement_id = request.args.get("statement", None)
+    if not statement_id:
+        flash("Missing statement id", "alert-error")
+        return redirect(url_for(request.args.get("next") or ".index"))
+    statement = Statement.query.filter_by(id=statement_id).first()
+    db.session.delete(statement)
+    db.session.commit()
+    flash("Statement canceled", "alert-success")
+    mode = request.args.get("mode", "pending")
+    return redirect(url_for(request.args.get("next") or ".index", mode=mode))
+
+@speech.route("/done")
+@user_permission.require()
+def done():
+    statement_id = request.args.get("statement", None)
+    if not statement_id:
+        flash("Missing statement id", "alert-error")
+        return redirect(url_for(request.args.get("next") or ".index"))
+    statement = Statement.query.filter_by(id=statement_id).first()
+    if statement.done():
+        db.session.commit()
+    else:
+        flash("Statement already done", "alert-error")
+    mode = request.args.get("mode", "pending")
+    return redirect(url_for(request.args.get("next") or ".index", mode=mode))
+
+@speech.route("/update_show.js")
+def update_show_js():
+    mode = request.args.get("mode", "pending")
+    return render_template("update_show.js", mode=mode)
+

server.py

@@ -7,8 +7,8 @@ from passlib.hash import pbkdf2_sha256
 
 import config
 from shared import db, login_manager
-from models.forms import LoginForm
-from models.database import User
+from models.forms import LoginForm, NewUserForm
+from models.database import User, Statement, Speaker
 
 app = Flask(__name__)
 app.config.from_object(config)
@@ -19,9 +19,10 @@ login_manager.login_message_category = "alert-error"
 
 Principal(app)
 
-from modules import admin
+from modules import admin, speech
 
 app.register_blueprint(admin.admin, url_prefix="/admin")
+app.register_blueprint(speech.speech, url_prefix="/speech")
 db.create_all(app=app)
 
 @app.route("/")
@@ -33,7 +34,8 @@ def index():
         user = User(fullname, username, password, ["admin", "user"])
         db.session.add(user)
         db.session.commit()
-    return render_template("index.html")
+    #return render_template("index.html")
+    return redirect(url_for("speech.show", mode="pending"))
 
 @app.route("/login", methods=["GET", "POST"])
 def login():
@@ -75,7 +77,6 @@ def register():
         return redirect(url_for(".login"))
     return render_template("register.html", form=form)
 
-
 @identity_loaded.connect_via(app)
 def on_identity_loaded(sender, identity):
     # Set the identity user object

static/css/style.css

@@ -97,3 +97,11 @@
 .rede-separator {
     height: 32px;
 }
+
+.md-24 {
+    font-size: 24px;
+}
+
+.md-48 {
+    font-size: 48px;
+}

templates/admin_index.html

 {% extends "layout.html" %}
-{% block title %}Index{% endblock %}
+{% block title %}{% block admin_title %}Index{% endblock %} - Administration{% endblock %}
 
 {% block content %}
-    <table class="mdl-data-table mdl-js-table mdl-shadow--2dp sortable mdl-cell mdl-cell--3-col">
-        <thead>
-            <tr>
-                <th class="mdl-data-table_-cell--non-numeric">Full Name</th>
-                <th class="mdl-data-table_-cell--non-numeric">Username</th>
-                <th class="mdl-data-table_-cell--non-numeric">Roles</th>
-            </tr>
-        </thead>
-        <tbody>
-        {% for user in users %}
-            <tr>
-                <td class="mdl-data-table__cell--non-numeric"><a href="{{ url_for(".user_edit", id=user.id) }}">{{ user.fullname }}</a></td>
-                <td class="mdl-data-table__cell--non-numeric">{{ user.username }}</td>
-                <td class="mdl-data-table__cell--non-numeric">{% if user.roles is not none %}{{ ", ".join(user.roles) }}{% endif %}</td>
-            </tr>
-        {% endfor %}
-        </tbody>
-    </table>
-    <div class="mdl-card__actions">
-        <a class="mdl-button mdl-button--colored mdl-js-button" href="{{ url_for(".user") }}">All users</a>
+    <div class="mdl-cell mdl-cell--6-col mdl-cell--8-col-tablet mdl-cell--4-col-phone mdl-grid mdl-grid--no-spacing">
+        <table class="mdl-data-table mdl-js-table mdl-shadow--2dp sortable mdl-cell mdl-cell--12-col mdl-cell--8-col-tablet mdl-cell--4-col-phone">
+            <thead>
+                <tr>
+                    <th class="mdl-data-table__cell--non-numeric">Full Name</th>
+                    <th class="mdl-data-table__cell--non-numeric">Username</th>
+                    <th class="mdl-data-table__cell--non-numeric">Roles</th>
+                </tr>
+            </thead>
+            <tbody>
+            {% for user in users %}
+                <tr>
+                    <td class="mdl-data-table__cell--non-numeric"><a href="{{ url_for(".user_edit", id=user.id) }}">{{ user.fullname }}</a></td>
+                    <td class="mdl-data-table__cell--non-numeric">{{ user.username }}</td>
+                    <td class="mdl-data-table__cell--non-numeric">{% if user.roles is not none %}{{ ", ".join(user.roles) }}{% endif %}</td>
+                </tr>
+            {% endfor %}
+            </tbody>
+        </table>
+        <div class="mdl-cell mdl-cell--3-col mdl-cell--3-col-tablet mdl-cell--2-col-phone">
+            <a class="mdl-button mdl-button--colored mdl-js-button" href="{{ url_for(".user") }}">
+                All users
+            </a>
+        </div>
     </div>
 {% endblock %}

templates/admin_user_index.html

-{% extends "layout.html" %}
-{% block title %}Index{% endblock %}
+{% extends "admin_index.html" %}
+{% block admin_title %}Users{% endblock %}
 
 {% block content %}
     <div class="mdl-cell mdl-cell--3-col mdl-grid mdl-grid--no-spacing">
         <table class="mdl-data-table mdl-js-table mdl-shadow--2dp mdl-cell mdl-cell--3-col">
             <thead>
                 <tr>
-                    <th class="mdl-data-table_-cell--non-numeric">Full Name</th>
-                    <th class="mdl-data-table_-cell--non-numeric">Username</th>
-                    <th class="mdl-data-table_-cell--non-numeric">Roles</th>
-                    <th class="mdl-data-table_-cell--non-numeric">Delete</th>
+                    <th class="mdl-data-table__cell--non-numeric">Full Name</th>
+                    <th class="mdl-data-table__cell--non-numeric">Username</th>
+                    <th class="mdl-data-table__cell--non-numeric">Roles</th>
+                    <th class="mdl-data-table__cell--non-numeric">Delete</th>
                 </tr>
             </thead>
             <tbody>

templates/layout.html

@@ -12,6 +12,9 @@
     <meta name="mobile-web-app-capable" content="yes">
     <link rel="stylesheet" href="{{ url_for('static', filename='css/style.css') }}" />
     <title>{% block title %}Unknown Page{% endblock %} - Redeleitsystem</title>
+    {% block additional_js %}
+    <!-- Place to insert more .js-files -->
+    {% endblock %}
     {% endblock %}
 </head>
 <body>
@@ -35,16 +38,29 @@
             <div class="rede-account-dropdown">
                 <span>
                 {% if current_user.is_authenticated() %}
-                    {{ current_user.fullname }}
+                    <p class="md-24">
+                        <i class="material-icons md-48">
+                            {% if "user" in current_user.roles and not "admin" in current_user.roles %}
+                                person_outline
+                            {% elif "admin" in current_user.roles %}
+                                person
+                            {% else %}
+                                face
+                            {% endif %}</i>
+                        {{ current_user.fullname }}
+                    </p>
                 {% else %}
-                    Guest
+                    <p class="md-24">
+                        <i class="material-icons md-48">face</i>
+                        Guest
+                    </p>
                 {% endif %}
-                </span>
                 <div class="mdl-layout-spacer"></div>
                 <button id="accbtn" class="mdl-button mdl-js-button mdl-js-ripple-effect mdl-button--icon">
                     <i class="material-icons" role="presentation">arrow_drop_down</i>
                     <span class="visuallyhidden">Account</span>
                 </button>
+                </span>
                 <ul class="mdl-menu mdl-menu--bottom-left mdl-js-menu mdl-js-ripple-effet" for="accbtn">
                     {% if current_user.is_authenticated() %}
                     <li class="mdl-menu__item"><a class="mdl-navigation__link" href="{{ url_for("logout") }}">Logout</a></li>
@@ -56,13 +72,19 @@
             </div>
         </header>
         <nav class="rede-navigation mdl-navigation mdl-color--blue-grey-800">
+            {% if current_user.is_authenticated() and "user" in current_user.roles %}
+            <a class="mdl-navigation__link" href="{{ url_for("speech.index", mode="pending") }}"><i class="mdl-color-text--blue-grey-400 material-icons" role="presentation">build</i>Handle speakers</a>
+            {% endif %}
+            <a class="mdl-navigation__link" href="{{ url_for("speech.show", mode="pending") }}"><i class="mdl-color-text--blue-grey-400 material-icons" role="presentation">announcement</i>Pending speakers</a>
+            <a class="mdl-navigation__link" href="{{ url_for("speech.show", mode="all") }}"><i class="mdl-color-text--blue-grey-400 material-icons" role="presentation">list</i>All speakers</a>
+            <a class="mdl-navigation__link" href="{{ url_for("speech.show", mode="past") }}"><i class="mdl-color-text--blue-grey-400 material-icons" role="presentation">schedule</i>Past speakers</a>
             {% if current_user.is_authenticated() and "admin" in current_user.roles %}
             <a class="mdl-navigation__link" href="{{ url_for("admin.index") }}"><i class="mdl-color-text--blue-grey-400 material-icons" role="presentation">computer</i>Administration</a>
             {% endif %}
         </nav>
     </div>
     <main class="mdl-layout__content mdl-color--grey-100">
-        <div class="mdl-grid rede-content">
+        <div id="rede-content-div" class="mdl-grid rede-content">
         {% block content %}
         There is no content yet.
         {% endblock %}

templates/macros.html

@@ -10,10 +10,10 @@
 
 {% macro render_stringfield(field) -%}
     <div class="mdl-textfield mdl-js-textfield mdl-textfield--floating-label">
-        <input id="{{ field.id }}" name="{{ field.id }}" class="mdl-textfield__input" type="text" value="{{ field.data }}" />
+        <input id="{{ field.id }}" name="{{ field.id }}" class="mdl-textfield__input" type="text"{% if field.data is not none %}value="{{ field.data }}"{% endif %} />
         <label class="mdl-textfield__label" for="{{ field.id }}">{{ field.label.text }}</label>
         {% if field.errors %}
-            {% for e in errors %}
+            {% for e in field.errors %}
                 <div class="mdl-card__supporting-text">
                     {{ e }}
                 </div>
@@ -27,7 +27,7 @@
         <input id="{{ field.id }}" name="{{ field.id }}" class="mdl-textfield__input" type="password" />
         <label class="mdl-textfield__label" for="{{ field.id }}">{{ field.label.text }}</label>
         {% if field.errors %}
-            {% for e in errors %}
+            {% for e in field.errors %}
                 <div class="mdl-card__supporting-text">
                     {{ e }}
                 </div>
@@ -42,7 +42,7 @@
         <span class="mdl-checkbox__label">{{ field.label.text }}</span>
     </label>
     {% if field.errors %}
-        {% for e in errors %}
+        {% for e in field.errors %}
             <div class="mdl-card__supporting-text">
                 {{ e }}
             </div>
@@ -65,7 +65,9 @@
         </select>
         {% if field.errors %}
             {% for e in field.errors %}
-                <p class="help-block">{{ e }}</p>
+                <div class="mdl-card__supporting-text">
+                    {{ e }}
+                </div>
             {% endfor %}
         {% endif %}
     </label>
@@ -73,11 +75,11 @@
 
 
 
-{% macro render_form(form, action_url="", title=None, action_text="Submit", class_="mdl-card mdl-shadow--2dp", title_class="mdl-card__title", title_next_class="mdl-card__title-text", content_class="mdl-card__supporting-text", action_class="mdl-card__actions", btn_class="mdl-button mdl-js-button mdl-button--raised mdl-button-colored") -%}
+{% macro render_form(form, action_url="", title=None, action_text="Submit", class_="mdl-card mdl-shadow--2dp mdl-cell mdl-cell--4-col mdl-cell--4-col-tablet mdl-cell--4-col-phone", title_class="mdl-card__title", title_next_class="mdl-card__title-text", content_class="mdl-card__supporting-text", action_class="mdl-card__actions", btn_class="mdl-button mdl-js-button mdl-button--raised mdl-button-colored") -%}
     <div class="{{ class_ }}">
         <form method="POST" action="{{ action_url }}">
             <div class="{{ title_class }}">
-                <h2 class="{{ title_text_class}}">{{ title if title is not none else action_text }}</h2>
+                <h3 class="{{ title_text_class}}">{{ title if title is not none else action_text }}</h3>
             </div>
             <div class="{{ content_class }}">
                 {% for f in form %}

templates/register.html

+{% extends "layout.html" %}
+{% from "macros.html" import render_form %}
+{% block title %}Register{% endblock %}
+
+{% block content %}
+        {{ render_form(form, action_url=url_for(".register", id=id), action_text="Add", title="Register") }}
+{% endblock %}

templates/speech_index.html

+{% extends "layout.html" %}
+{% from "macros.html" import render_form %}
+{% block title %}Statements{% endblock %}
+
+{% block content %}
+    <table class="mdl-data-table mdl-js-table mdl-shadow--2dp mdl-cell mdl-cell--6-col mdl-cell--4-col-tablet mdl-cell--4-col-phone sortable">
+        <thead>
+            <tr>
+                <th class="mdl-data-table__cell--non-numeric">Speaker</th>
+                <th>Count</th>
+                {% if "user" in current_user.roles %}
+                <th class="mdl-data-table__cell--non-numeric">Done</th>
+                <th class="mdl-data-table__cell--non-numeric">Cancel</th>
+                {% endif %}
+            </tr>
+        </thead>
+        <tbody>
+        {% for statement, speaker, count in statements %}
+            {% if not statement.executed %}
+            <tr>
+                <td class="mdl-data-table__cell--non-numeric">
+                    <h5>{{ speaker.name }}</h5>
+                </td>
+                <td>
+                    <h5>{{ count }}</h5>
+                </td>
+                {% if "user" in current_user.roles %}
+                <td class="mdl-data-table__cell--non-numeric">
+                    <a href="{{ url_for(".done", statement=statement.id) }}">
+                        <button class="mdl-button mdl-js-button mdl-button--fab mdl-button--mini-fab mdl-button--colored">
+                            <i class="material-icons">done</i>
+                        </button>
+                    </a>
+                </td>
+                <td class="mdl-data-table__cell--non-numeric">
+                    <a href="{{ url_for(".cancel", statement=statement.id) }}">
+                        <button class="mdl-button mdl-js-button mdl-button--fab mdl-button--mini-fab">
+                            <i class="material-icons">delete</i>
+                        </button>
+                    </a>
+                </td>
+                {% endif %}
+            </tr>
+            {% endif %}
+        {% endfor %}
+        </tbody>
+    </table>
+    {% if current_user.is_authenticated() and "user" in current_user.roles %}
+        {{ render_form(add_form, action_url=url_for('.add', next=current), action_text="Add", title="Add Speaker") }}
+    {% endif %}
+{% endblock %}

templates/speech_show.html

+{% extends "layout.html" %}
+{% from "macros.html" import render_form %}
+{% block title %}Statements{% endblock %}
+{% block additional_js %}
+    <script src="{{ url_for(".update_show_js", mode=mode) }}" async></script>
+{% endblock %}
+
+{% block content %}
+    <table class="mdl-data-table mdl-js-table mdl-shadow--2dp mdl-cell mdl-cell--12-col mdl-cell--8-col-tablet mdl-cell--4-col-phone">
+        <thead>
+            <tr>
+                <th class="mdl-data-table__cell--non-numeric">Speaker</th>
+                {% if mode == "all" or mode == "past" %}
+                <th class="mdl-data-table__cell--non-numeric">Time</th>
+                {% endif %}
+            </tr>
+        </thead>
+        <tbody>
+        {% if mode == "all" or mode == "past" %}
+            {% for statement, speaker in statements %}
+                <tr>
+                    <td class="mdl-data-table__cell--non-numeric">
+                        {{ speaker.name }}
+                    </td>
+                    {% if mode == "all" %}
+                    <td class="mdl-data-table__cell--non-numeric">
+                        {{ statement.insertion_time.strftime("%d. %B %Y, %H:%M") }}
+                    </td>
+                    {% elif mode == "past" %}
+                    <td class="mdl-data-table__cell--non-numeric">
+                        {{ statement.execution_time.strftime("%d. %B %Y, %H:%M") }}
+                    </td>
+                    {% endif %}
+                </tr>
+            {% endfor %}
+        {% elif mode == "pending" %}
+            {% for statement, speaker, count in statements %}
+                {% if not statement.executed %}
+                    <tr>
+                        <td class="mdl-data-table__cell--non-numeric">
+                            <h5>{{ speaker.name }}</h5>
+                        </td>
+                    </tr>
+                {% endif %}
+            {% endfor %}
+        {% endif %}
+        </tbody>
+    </table>
+{% endblock %}

templates/speech_update_show.html

+{% from "macros.html" import render_form %}
+    <table class="mdl-data-table mdl-js-table mdl-shadow--2dp mdl-cell mdl-cell--12-col mdl-cell--8-col-tablet mdl-cell--4-col-phone">
+        <thead>
+            <tr>
+                <th class="mdl-data-table__cell--non-numeric">Speaker</th>
+                {% if mode == "all" or mode == "past" %}
+                <th class="mdl-data-table__cell--non-numeric">Time</th>
+                {% endif %}
+            </tr>
+        </thead>
+        <tbody>
+        {% if mode == "all" or mode == "past" %}
+            {% for statement, speaker in statements %}
+                <tr>
+                    <td class="mdl-data-table__cell--non-numeric">
+                        {{ speaker.name }}
+                    </td>
+                    {% if mode == "all" %}
+                    <td class="mdl-data-table__cell--non-numeric">
+                        {{ statement.insertion_time.strftime("%d. %B %Y, %H:%M") }}
+                    </td>
+                    {% elif mode == "past" %}
+                    <td class="mdl-data-table__cell--non-numeric">
+                        {{ statement.execution_time.strftime("%d. %B %Y, %H:%M") }}
+                    </td>
+                    {% endif %}
+                </tr>
+            {% endfor %}
+        {% elif mode == "pending" %}
+            {% for statement, speaker, count in statements %}
+                {% if not statement.executed %}
+                    <tr>
+                        <td class="mdl-data-table__cell--non-numeric">
+                            <h5>{{ speaker.name }}</h5>
+                        </td>
+                    </tr>
+                {% endif %}
+            {% endfor %}
+        {% endif %}
+        </tbody>
+    </table>

templates/update_show.js

+var returned = true;
+var last_content = "";
+function request() {
+    if (!returned)
+        return;
+    returned = false;
+    var xmlhttp = new XMLHttpRequest();
+    xmlhttp.onreadystatechange=function() {
+        if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
+            returned = true;
+            update(xmlhttp.responseText);
+        }
+    };
+    var target = "{{ url_for('.update', mode=mode) }}";
+    xmlhttp.open("GET", target, true);
+    xmlhttp.send();
+}
+
+function update(data) {
+    if (data != last_content) {