init lesson flash

example.py

@@ -1,8 +1,17 @@
 import json
 import uuid
-from flask import Flask, redirect, render_template, request, url_for
+from flask import (
+    get_flashed_messages,
+    flash,
+    Flask,
+    redirect,
+    render_template,
+    request,
+    url_for
+)
 
 app = Flask(__name__)
+app.secret_key = "secret_key"
 
 users = json.load(open("./users.json", 'r'))
 
@@ -16,12 +25,14 @@ def index():
 def users_get():
     with open("./users.json", "r") as f:
         users = json.load(f)
+    messages = get_flashed_messages(with_categories=True)
     term = request.args.get('term', '')
     filtered_users = [user for user in users if term in user['name']]
     return render_template(
         'users/index.html',
         users=filtered_users,
         search=term,
+        messages=messages
     )
 
 
@@ -44,6 +55,7 @@ def users_post():
     users.append(user)
     with open("./users.json", "w") as f:
         json.dump(users, f)
+    flash('Пользователь успешно добавлен', 'success')
     return redirect(url_for('users_get'), code=302)
 
 

templates/users/index.html

@@ -3,6 +3,15 @@
 {% block title %}Пользователи{% endblock %}
 
 {% block content %}
+
+{% if messages %}
+  <ul class=flashes>
+  {% for category, message in messages %}
+    <li class="{{ category }}">{{ message }}</li>
+  {% endfor %}
+  </ul>
+{% endif %}
+
 <form action="{{ url_for('users_get') }}" method="get">
     <input type="search" name="term" value="{{ search }}" />
     <input type="submit" value="Search" />

templates/users/new.html

@@ -1,23 +1,24 @@
 <h1>Новый пользователь</h1>
 <hr>
+{% if errors %}
+<ul class=flashes>
+    {% for _, error in errors.items() %}
+    <li class="error">{{ error }}</li>
+    {% endfor %}
+</ul>
+{% endif %}
 <form action="{{ url_for('users_post') }}" method="post">
-  <div>
+    <div>
     <label for="user-nickname">
       Имя:
       <input type="text" id="user-name" name="name" value="{{ user.name }}">
     </label>
-    {% if errors['name'] %}
-    <div>{{ errors['name'] }}</div>
-    {% endif %}
   </div>
   <div>
     <label for="user-email">
       Email:
       <input type="text" id="user-email" name="email" value="{{ user.email }}">
     </label>
-    {% if errors['email'] %}
-    <div>{{ errors['email'] }}</div>
-    {% endif %}
   </div>
   <div>
     <button type="submit" title="Submit form">Добавить</button>

users.json

@@ -1,7 +1 @@
-[
-  { "id": 1, "name": "mike" },
-  { "id": 2, "name": "mishel" },
-  { "id": 3, "name": "adel" },
-  { "id": 4, "name": "keks" },
-  { "id": 5, "name": "kamila" }
-]
+[{"id": 1, "name": "mike"}, {"id": 2, "name": "mishel"}, {"id": 3, "name": "adel"}, {"id": 4, "name": "keks"}, {"id": 5, "name": "kamila"}, {"id": "986e398a-b9ac-4195-bf40-bc85e57da274", "name": "dfdf", "email": "dfdgdgf"}, {"id": "4e409df7-c732-4075-a117-de013b464c69", "name": "13", "email": "34"}]