Change the user session SocketIO Logic

app/users/__init__.py

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+from flask import Blueprint
+
+
+bp = Blueprint('users', __name__)
+from . import events, routes  # noqa

app/users/events.py

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+from app import hashids, socketio
+from app.decorators import socketio_login_required
+from app.models import User
+from flask_login import current_user
+from flask_socketio import join_room, leave_room
+
+
+@socketio.on('SUBSCRIBE /users/<user_id>')
+@socketio_login_required
+def subscribe_user(user_hashid):
+    user_id = hashids.decode(user_hashid)
+    user = User.query.get(user_id)
+    if user is None:
+        return {'code': 404, 'msg': 'Not found'}
+    if not (user == current_user or current_user.is_administrator):
+        return {'code': 403, 'msg': 'Forbidden'}
+    dict_user = user.to_dict(backrefs=True, relationships=True)
+    join_room(f'/users/{user.hashid}')
+    return {'code': 200, 'msg': 'OK', 'payload': dict_user}
+
+
+@socketio.on('UNSUBSCRIBE /users/<user_id>')
+@socketio_login_required
+def subscribe_user(user_hashid):
+    user_id = hashids.decode(user_hashid)
+    user = User.query.get(user_id)
+    if user is None:
+        return {'code': 404, 'msg': 'Not found'}
+    if not (user == current_user or current_user.is_administrator):
+        return {'code': 403, 'msg': 'Forbidden'}
+    leave_room(f'/users/{user.hashid}')
+    return {'code': 200, 'msg': 'OK'}

app/users/routes.py

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+from app.models import User
+from flask import render_template, request, url_for
+from . import bp
+
+
+@bp.route('/')
+def users():
+    return render_template(
+        'users/users.html.j2',
+        title='Users'
+    )
+
+
+@bp.route('/api_users')
+def api_users():
+    query = User.query
+
+    # search filter
+    search = request.args.get('search')
+    if search:
+        query = query.filter(User.username.like(f'%{search}%') | User.email.like(f'%{search}%'))
+    total = query.count()
+
+    # sorting
+    sort = request.args.get('sort')
+    if sort:
+        order = []
+        for s in sort.split(','):
+            direction = s[0]
+            name = s[1:]
+            if name not in ['username', 'email']:
+                name = 'username'
+            col = getattr(User, name)
+            if direction == '-':
+                col = col.desc()
+            order.append(col)
+        if order:
+            query = query.order_by(*order)
+
+    # pagination
+    offset = request.args.get('offset', type=int, default=-1)
+    limit = request.args.get('limit', type=int, default=-1)
+    if offset != -1 and limit != -1:
+        query = query.offset(offset).limit(limit)
+
+    # response
+    return {
+        'data': [user.to_dict() for user in query],
+        'total': total
+    }