基于flask的论坛网站设计与实现Python代码
时间: 2023-12-27 20:02:38 浏览: 27
由于篇幅较长,无法一次性贴出所有的代码,以下是论坛网站中常用的功能实现的代码示例,供参考。
1. 用户认证
```python
from flask_login import LoginManager, login_user, logout_user, login_required, current_user
from werkzeug.security import generate_password_hash, check_password_hash
from app.models import User
login_manager = LoginManager()
@login_manager.user_loader
def load_user(user_id):
return User.query.get(int(user_id))
def login():
if request.method == 'POST':
username = request.form['username']
password = request.form['password']
remember = True if 'remember' in request.form else False
user = User.query.filter_by(username=username).first()
if not user or not check_password_hash(user.password, password):
flash('Please check your login details and try again.')
return redirect(url_for('auth.login'))
login_user(user, remember=remember)
return redirect(url_for('main.index'))
return render_template('login.html')
@login_required
def logout():
logout_user()
return redirect(url_for('main.index'))
```
2. 帖子管理
```python
from app.models import Post, Tag, Category
from flask import request, jsonify
def create_post():
if request.method == 'POST':
title = request.form['title']
content = request.form['content']
category_id = request.form['category_id']
tags = request.form['tags']
post = Post(title=title, content=content, category_id=category_id)
for tag in tags:
tag = Tag.query.filter_by(name=tag).first()
if not tag:
tag = Tag(name=tag)
post.tags.append(tag)
db.session.add(post)
db.session.commit()
return redirect(url_for('posts.post_detail', post_id=post.id))
else:
categories = Category.query.all()
tags = Tag.query.all()
return render_template('create_post.html', categories=categories, tags=tags)
def edit_post(post_id):
post = Post.query.get(post_id)
if request.method == 'POST':
post.title = request.form['title']
post.content = request.form['content']
post.category_id = request.form['category_id']
tags = request.form['tags']
post.tags = []
for tag in tags:
tag = Tag.query.filter_by(name=tag).first()
if not tag:
tag = Tag(name=tag)
post.tags.append(tag)
db.session.commit()
return redirect(url_for('posts.post_detail', post_id=post_id))
else:
categories = Category.query.all()
tags = Tag.query.all()
return render_template('edit_post.html', post=post, categories=categories, tags=tags)
def delete_post(post_id):
post = Post.query.get(post_id)
db.session.delete(post)
db.session.commit()
return jsonify({'success': True})
```
3. 评论管理
```python
from app.models import Post, Comment
from flask import request, jsonify
def create_comment(post_id):
post = Post.query.get(post_id)
if request.method == 'POST':
content = request.form['content']
comment = Comment(content=content, post=post, user=current_user)
db.session.add(comment)
db.session.commit()
return redirect(url_for('posts.post_detail', post_id=post_id))
else:
return render_template('create_comment.html', post=post)
def edit_comment(comment_id):
comment = Comment.query.get(comment_id)
if request.method == 'POST':
comment.content = request.form['content']
db.session.commit()
return redirect(url_for('posts.post_detail', post_id=comment.post_id))
else:
return render_template('edit_comment.html', comment=comment)
def delete_comment(comment_id):
comment = Comment.query.get(comment_id)
db.session.delete(comment)
db.session.commit()
return jsonify({'success': True})
```
4. 搜索功能
```python
from app.models import Post
from flask import request
def search():
query = request.args.get('q')
page = request.args.get('page')
per_page = request.args.get('per_page')
posts = Post.query.whoosh_search(query).paginate(page=page, per_page=per_page)
return render_template('search.html', posts=posts)
```
5. 排序、分页功能
```python
from app.models import Post, Category, Tag
from flask import request
def index():
page = request.args.get('page', 1, type=int)
per_page = request.args.get('per_page', 5, type=int)
category_id = request.args.get('category_id', type=int)
tag_id = request.args.get('tag_id', type=int)
sort_by = request.args.get('sort_by', 'new', type=str)
if sort_by == 'new':
posts = Post.query.order_by(Post.timestamp.desc()).paginate(page=page, per_page=per_page, error_out=False)
elif sort_by == 'hot':
posts = Post.query.order_by(Post.views.desc()).paginate(page=page, per_page=per_page, error_out=False)
if category_id:
posts = Post.query.filter_by(category_id=category_id).paginate(page=page, per_page=per_page, error_out=False)
if tag_id:
tag = Tag.query.get(tag_id)
posts = tag.posts.paginate(page=page, per_page=per_page, error_out=False)
categories = Category.query.all()
tags = Tag.query.all()
return render_template('index.html', posts=posts, categories=categories, tags=tags, sort_by=sort_by, category_id=category_id, tag_id=tag_id)
```
这里只是针对常用功能的代码示例,具体实现还需要根据实际需求进行适当调整和优化。