Building a Personalized Photo Sharing Platform: Webman's Guide to Photo Apps

Building a personalized photo sharing platform: Webman’s photo application guide

Abstract:
With the advancement of technology and the popularity of smartphones, people are more interested in taking photos The demand for and photo sharing continues to grow. This article will introduce how to use Webman to build a personalized photo sharing platform. Webman is a web framework based on the Python language, providing rich functions and easy-to-use API interfaces. Through the guide in this article, you will learn how to use Webman to build a photo sharing platform with personalized functions, and add some practical code examples.

1. Install Webman
   First, we need to install Webman. The installation of Webman is very simple, just use the pip command to install it in one line:

   pip install webman

2. Create project
   After installing Webman, we can use Webman's command line tool to create A new project:

   webman create myphotoapp

   This will create a new project directory called myphotoapp and create a basic project structure.

3. Define database model
   Create a file named models.py in the myphotoapp directory. In this file, we will define the database models for Photos and Users:

   from webman import db
   
   class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(80), unique=True, nullable=False)
    password = db.Column(db.String(80), nullable=False)
   
   class Photo(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    title = db.Column(db.String(80), nullable=False)
    filename = db.Column(db.String(80), nullable=False)
    user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
    user = db.relationship('User', backref=db.backref('photos', lazy=True))

   In this example, we have created two model classes: User and Photo. The User model is used to store user information, and the Photo model is used to store photo information. We use db.Column to define fields in the model, and db.relationship to define relationships between models.

4. Create routes and views
   Create a file named views.py in the myphotoapp directory. In this file, we will define the routes and view functions for the photos application:

   from webman import app, db
   from webman.auth import login_required
   from webman.shortcuts import render_template, redirect, url_for
   from .models import User, Photo
   
   @app.route('/')
   @login_required
   def index():
    user = User.query.get(session['user_id'])
    photos = Photo.query.filter_by(user_id=user.id).all()
    return render_template('index.html', user=user, photos=photos)
   
   @app.route('/upload', methods=['GET', 'POST'])
   @login_required
   def upload():
    if request.method == 'POST':
        file = request.files['file']
        filename = secure_filename(file.filename)
        file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
        photo = Photo(title=request.form['title'], filename=filename, user_id=session['user_id'])
        db.session.add(photo)
        db.session.commit()
        return redirect(url_for('index'))
    return render_template('upload.html')

   In this example, we define two routes: '/' and '/upload'. The '/' route is used to display the user's photo list, and the 'upload' route is used to handle the user's request to upload photos. We use the @login_required decorator to ensure that the user is logged in when accessing these routes.

5. Create template
   Create a folder named templates in the myphotoapp directory, and create two HTML template files in it: index.html and upload.html.
   index.html is used to display the photo list:

   {% extends 'base.html' %}
   
   {% block content %}
   <h1 id="Welcome-user-username">Welcome, {{ user.username }}</h1>
   
   <h2 id="Your-Photos">Your Photos</h2>
   <ul>
   {% for photo in photos %}
    <li>{{ photo.title }}</li>
   {% endfor %}
   </ul>
   
   <a href="{{ url_for('upload') }}">Upload a Photo</a>
   {% endblock %}

   upload.html is used to display the form for uploading photos:

   {% extends 'base.html' %}
   
   {% block content %}
   <h1 id="Upload-a-Photo">Upload a Photo</h1>
   
   <form action="{{ url_for('upload') }}" method="POST" enctype="multipart/form-data">
    <input type="file" name="file" required>
    <input type="text" name="title" placeholder="Title" required>
    <input type="submit" value="Upload">
   </form>
   {% endblock %}

6. Run the application
   Complete the above After the steps, we can use Webman's command line tool to run the application:

   webman run

   This will start a local server and listen on http://localhost:5000. Open this address in your browser and you can see the photo sharing platform we created.

Conclusion:
Through the guide in this article, you learned how to use Webman to build a personalized photo sharing platform. We completed a basic photo sharing application by defining the database model, creating routes and views, and creating templates. You can further expand this application according to your own needs, such as adding user registration, comment functions, etc. I hope this article will help you build a personalized photo sharing platform!

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