Chapter 8

app/forms.py

@@ -61,3 +61,8 @@ class EditProfileForm(FlaskForm):
 
 class EmptyForm(FlaskForm):
     submit = SubmitField("Submit")
+
+class PostForm(FlaskForm):
+    post = TextAreaField('Say something', validators=[
+        DataRequired(), Length(min=1, max=140)])
+    submit = SubmitField('Submit')

app/routes.py

@@ -3,8 +3,8 @@ from flask import render_template, flash, redirect, url_for, request
 from flask_login import current_user, login_user, logout_user, login_required
 from werkzeug.urls import url_parse
 from app import app, db
-from app.forms import LoginForm, RegistrationForm, EditProfileForm, EmptyForm
-from app.models import User
+from app.forms import LoginForm, RegistrationForm, EditProfileForm, EmptyForm, PostForm
+from app.models import User, Post
 
 
 @app.before_request
@@ -14,18 +14,20 @@ def before_request():
         db.session.commit()
 
 
-@app.route("/")
-@app.route("/index")
+@app.route('/', methods=['GET', 'POST'])
+@app.route('/index', methods=['GET', 'POST'])
 @login_required
 def index():
-    posts = [
-        {"author": {"username": "John"}, "body": "Beautiful day in Portland!"},
-        {
-            "author": {"username": "Susan"},
-            "body": "The Avengers movie was so cool!",
-        },
-    ]
-    return render_template("index.html", title="Home", posts=posts)
+    form = PostForm()
+    if form.validate_on_submit():
+        post = Post(body=form.post.data, author=current_user)
+        db.session.add(post)
+        db.session.commit()
+        flash('Your post is now live!')
+        return redirect(url_for('index'))
+    posts = current_user.followed_posts().all()
+    return render_template("index.html", title='Home Page', form=form,
+                           posts=posts)
 
 
 @app.route("/login", methods=["GET", "POST"])
@@ -75,7 +77,8 @@ def user(username):
         {"author": user, "body": "Test post #1"},
         {"author": user, "body": "Test post #2"},
     ]
-    return render_template("user.html", user=user, posts=posts)
+    form = EmptyForm()
+    return render_template("user.html", user=user, posts=posts, form=form)
 
 
 @app.route("/edit_profile", methods=["GET", "POST"])
@@ -134,3 +137,9 @@ def unfollow(username):
         return redirect(url_for("user", username=username))
     else:
         return redirect(url_for("index"))
+
+@app.route('/explore')
+@login_required
+def explore():
+    posts = Post.query.order_by(Post.timestamp.desc()).all()
+    return render_template('index.html', title='Explore', posts=posts)

app/templates/_post.html

@@ -4,7 +4,8 @@
       <img src="{{ post.author.avatar(36) }}" />
     </td>
     <td>
-      {{ post.author.username }} says:<br />{{ post.body }}
+      <a href="{{ url_for('user', username = post.author.username) }}">{{ post.author.username }}</a>
+      says:<br />{{ post.body }}
     </td>
   </tr>
 </table>

app/templates/base.html

@@ -14,6 +14,7 @@
         <a href="{{ url_for('login') }}">Login</a>
       {% else %}
         <a href="{{ url_for('user', username = current_user.username) }}">Profile</a>
+        <a href="{{ url_for('explore') }}">Explore</a>
         <a href="{{ url_for('logout') }}">Logout</a>
       {% endif %}
     </div>

app/templates/index.html

@@ -2,11 +2,20 @@
 
 {% block content %}
   <h1>Hi, {{ current_user.username }}!</h1>
-  {% for post in posts %}
-    <div>
+  {% if form %}
+    <form action="" method="post">
+      {{ form.hidden_tag() }}
       <p>
-        {{ post.author.username }} says: <b>{{ post.body }}</b>
+        {{ form.post.label }}<br />
+        {{ form.post(cols = 32, rows = 4) }}<br />
+        {% for error in form.post.errors %}
+          <span style="color: red;">[{{ error }}]</span>
+        {% endfor %}
       </p>
-    </div>
+      <p>{{ form.submit() }}</p>
+    </form>
+  {% endif %}
+  {% for post in posts %}
+    {% include "_post.html" %}
   {% endfor %}
-{% endblock %}
+{% endblock %}s