567 lines
20 KiB
Python
567 lines
20 KiB
Python
from flask import Blueprint, render_template, request, redirect, url_for, flash, current_app, g, jsonify
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from app.models.book import Book, Category
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from app.models.user import db
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from app.utils.auth import login_required, admin_required
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import os
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from werkzeug.utils import secure_filename
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import datetime
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import pandas as pd
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import uuid
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book_bp = Blueprint('book', __name__)
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# 图书列表页面
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@book_bp.route('/list')
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@login_required
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def book_list():
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print("访问图书列表页面") # 调试输出
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page = request.args.get('page', 1, type=int)
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per_page = request.args.get('per_page', 10, type=int)
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query = Book.query
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# 搜索功能
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search = request.args.get('search', '')
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if search:
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query = query.filter(
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(Book.title.contains(search)) |
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(Book.author.contains(search)) |
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(Book.isbn.contains(search))
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)
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# 分类筛选
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category_id = request.args.get('category_id', type=int)
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if category_id:
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query = query.filter_by(category_id=category_id)
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# 排序
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sort = request.args.get('sort', 'id')
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order = request.args.get('order', 'desc')
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if order == 'desc':
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query = query.order_by(getattr(Book, sort).desc())
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else:
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query = query.order_by(getattr(Book, sort))
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pagination = query.paginate(page=page, per_page=per_page)
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books = pagination.items
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# 获取所有分类供筛选使用
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categories = Category.query.all()
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return render_template('book/list.html',
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books=books,
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pagination=pagination,
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search=search,
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categories=categories,
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category_id=category_id,
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sort=sort,
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order=order,
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current_user=g.user)
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# 图书详情页面
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@book_bp.route('/detail/<int:book_id>')
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@login_required
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def book_detail(book_id):
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book = Book.query.get_or_404(book_id)
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# 添加当前时间用于判断借阅是否逾期
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now = datetime.datetime.now()
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# 如果用户是管理员，预先查询并排序借阅记录
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borrow_records = []
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if g.user.role_id == 1: # 假设 role_id 1 为管理员
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from app.models.borrow import BorrowRecord
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borrow_records = BorrowRecord.query.filter_by(book_id=book_id).order_by(BorrowRecord.borrow_date.desc()).limit(
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10).all()
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return render_template(
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'book/detail.html',
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book=book,
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current_user=g.user,
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borrow_records=borrow_records,
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now=now
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)
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# 添加图书页面
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# 添加图书页面
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@book_bp.route('/add', methods=['GET', 'POST'])
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@login_required
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@admin_required
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def add_book():
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if request.method == 'POST':
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title = request.form.get('title')
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author = request.form.get('author')
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publisher = request.form.get('publisher')
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category_id = request.form.get('category_id')
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tags = request.form.get('tags')
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isbn = request.form.get('isbn')
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publish_year = request.form.get('publish_year')
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description = request.form.get('description')
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stock = request.form.get('stock', type=int, default=0)
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price = request.form.get('price')
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# 表单验证
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errors = []
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if not title:
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errors.append('书名不能为空')
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if not author:
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errors.append('作者不能为空')
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# 检查ISBN是否已存在(如果提供了ISBN)
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if isbn:
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existing_book = Book.query.filter_by(isbn=isbn).first()
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if existing_book:
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errors.append(f'ISBN "{isbn}" 已存在，请检查ISBN或查找现有图书')
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if errors:
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for error in errors:
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flash(error, 'danger')
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categories = Category.query.all()
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# 保留已填写的表单数据
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book_data = {
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'title': title,
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'author': author,
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'publisher': publisher,
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'category_id': category_id,
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'tags': tags,
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'isbn': isbn,
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'publish_year': publish_year,
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'description': description,
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'stock': stock,
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'price': price
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}
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return render_template('book/add.html', categories=categories,
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current_user=g.user, book=book_data)
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# 处理封面图片上传
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cover_url = None
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if 'cover' in request.files:
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cover_file = request.files['cover']
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if cover_file and cover_file.filename != '':
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try:
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# 更清晰的文件命名
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original_filename = secure_filename(cover_file.filename)
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# 保留原始文件扩展名
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_, ext = os.path.splitext(original_filename)
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if not ext:
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ext = '.jpg' # 默认扩展名
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filename = f"{uuid.uuid4()}{ext}"
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upload_folder = os.path.join(current_app.static_folder, 'uploads', 'covers')
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# 确保上传目录存在
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if not os.path.exists(upload_folder):
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os.makedirs(upload_folder)
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file_path = os.path.join(upload_folder, filename)
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cover_file.save(file_path)
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cover_url = f'/static/uploads/covers/{filename}'
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except Exception as e:
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current_app.logger.error(f"封面上传失败: {str(e)}")
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flash(f"封面上传失败: {str(e)}", 'warning')
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try:
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# 创建新图书
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book = Book(
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title=title,
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author=author,
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publisher=publisher,
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category_id=category_id,
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tags=tags,
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isbn=isbn,
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publish_year=publish_year,
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description=description,
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cover_url=cover_url,
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stock=stock,
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price=price,
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status=1,
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created_at=datetime.datetime.now(),
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updated_at=datetime.datetime.now()
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)
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db.session.add(book)
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# 先提交以获取book的id
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db.session.commit()
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# 记录库存日志 - 在获取 book.id 后
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if stock and int(stock) > 0:
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from app.models.inventory import InventoryLog
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inventory_log = InventoryLog(
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book_id=book.id,
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change_type='入库',
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change_amount=stock,
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after_stock=stock,
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operator_id=g.user.id,
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remark='新书入库',
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changed_at=datetime.datetime.now()
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)
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db.session.add(inventory_log)
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db.session.commit()
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flash(f'《{title}》添加成功', 'success')
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return redirect(url_for('book.book_list'))
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except Exception as e:
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db.session.rollback()
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error_msg = str(e)
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# 记录详细错误日志
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current_app.logger.error(f"添加图书失败: {error_msg}")
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flash(f'添加图书失败: {error_msg}', 'danger')
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categories = Category.query.all()
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# 保留已填写的表单数据
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book_data = {
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'title': title,
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'author': author,
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'publisher': publisher,
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'category_id': category_id,
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'tags': tags,
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'isbn': isbn,
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'publish_year': publish_year,
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'description': description,
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'stock': stock,
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'price': price
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}
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return render_template('book/add.html', categories=categories,
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current_user=g.user, book=book_data)
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categories = Category.query.all()
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return render_template('book/add.html', categories=categories, current_user=g.user)
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# 编辑图书
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@book_bp.route('/edit/<int:book_id>', methods=['GET', 'POST'])
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@login_required
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@admin_required
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def edit_book(book_id):
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book = Book.query.get_or_404(book_id)
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if request.method == 'POST':
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title = request.form.get('title')
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author = request.form.get('author')
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publisher = request.form.get('publisher')
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category_id = request.form.get('category_id')
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tags = request.form.get('tags')
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isbn = request.form.get('isbn')
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publish_year = request.form.get('publish_year')
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description = request.form.get('description')
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price = request.form.get('price')
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status = request.form.get('status', type=int)
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if not title or not author:
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flash('书名和作者不能为空', 'danger')
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categories = Category.query.all()
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return render_template('book/edit.html', book=book, categories=categories, current_user=g.user)
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# 处理库存变更
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new_stock = request.form.get('stock', type=int)
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if new_stock != book.stock:
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from app.models.inventory import InventoryLog
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change_amount = new_stock - book.stock
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change_type = '入库' if change_amount > 0 else '出库'
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inventory_log = InventoryLog(
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book_id=book.id,
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change_type=change_type,
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change_amount=abs(change_amount),
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after_stock=new_stock,
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operator_id=g.user.id,
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remark=f'管理员编辑图书库存 - {book.title}',
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changed_at=datetime.datetime.now()
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)
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db.session.add(inventory_log)
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book.stock = new_stock
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# 处理封面图片上传
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if 'cover' in request.files:
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cover_file = request.files['cover']
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if cover_file and cover_file.filename != '':
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filename = secure_filename(f"{uuid.uuid4()}_{cover_file.filename}")
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upload_folder = os.path.join(current_app.static_folder, 'uploads/covers')
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# 确保上传目录存在
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if not os.path.exists(upload_folder):
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os.makedirs(upload_folder)
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file_path = os.path.join(upload_folder, filename)
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cover_file.save(file_path)
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book.cover_url = f'/static/covers/{filename}'
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# 更新图书信息
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book.title = title
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book.author = author
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book.publisher = publisher
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book.category_id = category_id
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book.tags = tags
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book.isbn = isbn
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book.publish_year = publish_year
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book.description = description
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book.price = price
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book.status = status
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book.updated_at = datetime.datetime.now()
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db.session.commit()
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flash('图书信息更新成功', 'success')
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return redirect(url_for('book.book_list'))
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categories = Category.query.all()
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return render_template('book/edit.html', book=book, categories=categories, current_user=g.user)
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# 删除图书
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@book_bp.route('/delete/<int:book_id>', methods=['POST'])
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@login_required
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@admin_required
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def delete_book(book_id):
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book = Book.query.get_or_404(book_id)
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# 检查该书是否有借阅记录
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from app.models.borrow import BorrowRecord
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active_borrows = BorrowRecord.query.filter_by(book_id=book_id, status=1).count()
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if active_borrows > 0:
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return jsonify({'success': False, 'message': '该图书有未归还的借阅记录，无法删除'})
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# 考虑软删除而不是物理删除
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book.status = 0 # 0表示已删除/下架
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book.updated_at = datetime.datetime.now()
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db.session.commit()
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return jsonify({'success': True, 'message': '图书已成功下架'})
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# 图书分类管理
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@book_bp.route('/categories', methods=['GET'])
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@login_required
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@admin_required
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def category_list():
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categories = Category.query.all()
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return render_template('book/categories.html', categories=categories, current_user=g.user)
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# 添加分类
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@book_bp.route('/categories/add', methods=['POST'])
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@login_required
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@admin_required
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def add_category():
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name = request.form.get('name')
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parent_id = request.form.get('parent_id') or None
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sort = request.form.get('sort', 0, type=int)
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if not name:
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return jsonify({'success': False, 'message': '分类名称不能为空'})
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category = Category(name=name, parent_id=parent_id, sort=sort)
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db.session.add(category)
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db.session.commit()
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return jsonify({'success': True, 'message': '分类添加成功', 'id': category.id, 'name': category.name})
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# 编辑分类
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@book_bp.route('/categories/edit/<int:category_id>', methods=['POST'])
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@login_required
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@admin_required
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def edit_category(category_id):
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category = Category.query.get_or_404(category_id)
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name = request.form.get('name')
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parent_id = request.form.get('parent_id') or None
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sort = request.form.get('sort', 0, type=int)
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if not name:
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return jsonify({'success': False, 'message': '分类名称不能为空'})
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category.name = name
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category.parent_id = parent_id
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category.sort = sort
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db.session.commit()
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return jsonify({'success': True, 'message': '分类更新成功'})
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# 删除分类
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@book_bp.route('/categories/delete/<int:category_id>', methods=['POST'])
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@login_required
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@admin_required
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def delete_category(category_id):
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category = Category.query.get_or_404(category_id)
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# 检查是否有书籍使用此分类
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books_count = Book.query.filter_by(category_id=category_id).count()
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if books_count > 0:
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return jsonify({'success': False, 'message': f'该分类下有{books_count}本图书，无法删除'})
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# 检查是否有子分类
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children_count = Category.query.filter_by(parent_id=category_id).count()
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if children_count > 0:
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return jsonify({'success': False, 'message': f'该分类下有{children_count}个子分类，无法删除'})
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db.session.delete(category)
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db.session.commit()
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return jsonify({'success': True, 'message': '分类删除成功'})
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# 批量导入图书
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@book_bp.route('/import', methods=['GET', 'POST'])
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@login_required
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@admin_required
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def import_books():
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if request.method == 'POST':
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if 'file' not in request.files:
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flash('未选择文件', 'danger')
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return redirect(request.url)
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file = request.files['file']
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if file.filename == '':
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flash('未选择文件', 'danger')
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return redirect(request.url)
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if file and file.filename.endswith(('.xlsx', '.xls')):
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try:
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# 读取Excel文件
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df = pd.read_excel(file)
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success_count = 0
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error_count = 0
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errors = []
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# 处理每一行数据
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for index, row in df.iterrows():
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try:
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# 检查必填字段
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if pd.isna(row.get('title')) or pd.isna(row.get('author')):
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errors.append(f'第{index + 2}行: 书名或作者为空')
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error_count += 1
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continue
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# 检查ISBN是否已存在
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isbn = row.get('isbn')
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if isbn and not pd.isna(isbn) and Book.query.filter_by(isbn=str(isbn)).first():
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errors.append(f'第{index + 2}行: ISBN {isbn} 已存在')
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error_count += 1
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continue
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# 创建新书籍记录
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book = Book(
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title=row.get('title'),
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author=row.get('author'),
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publisher=row.get('publisher') if not pd.isna(row.get('publisher')) else None,
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category_id=row.get('category_id') if not pd.isna(row.get('category_id')) else None,
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tags=row.get('tags') if not pd.isna(row.get('tags')) else None,
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isbn=str(row.get('isbn')) if not pd.isna(row.get('isbn')) else None,
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publish_year=str(row.get('publish_year')) if not pd.isna(row.get('publish_year')) else None,
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description=row.get('description') if not pd.isna(row.get('description')) else None,
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cover_url=row.get('cover_url') if not pd.isna(row.get('cover_url')) else None,
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stock=int(row.get('stock')) if not pd.isna(row.get('stock')) else 0,
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price=float(row.get('price')) if not pd.isna(row.get('price')) else None,
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status=1,
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created_at=datetime.datetime.now(),
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updated_at=datetime.datetime.now()
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)
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db.session.add(book)
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# 提交以获取book的id
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db.session.flush()
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# 创建库存日志
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if book.stock > 0:
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from app.models.inventory import InventoryLog
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inventory_log = InventoryLog(
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book_id=book.id,
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change_type='入库',
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change_amount=book.stock,
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after_stock=book.stock,
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operator_id=g.user.id,
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remark='批量导入图书',
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changed_at=datetime.datetime.now()
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)
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db.session.add(inventory_log)
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success_count += 1
|
||
except Exception as e:
|
||
errors.append(f'第{index + 2}行: {str(e)}')
|
||
error_count += 1
|
||
|
||
db.session.commit()
|
||
flash(f'导入完成: 成功{success_count}条，失败{error_count}条', 'info')
|
||
if errors:
|
||
flash('<br>'.join(errors[:10]) + (f'<br>...等共{len(errors)}个错误' if len(errors) > 10 else ''),
|
||
'warning')
|
||
|
||
return redirect(url_for('book.book_list'))
|
||
|
||
except Exception as e:
|
||
flash(f'导入失败: {str(e)}', 'danger')
|
||
return redirect(request.url)
|
||
else:
|
||
flash('只支持Excel文件(.xlsx, .xls)', 'danger')
|
||
return redirect(request.url)
|
||
|
||
return render_template('book/import.html', current_user=g.user)
|
||
|
||
|
||
# 导出图书
|
||
@book_bp.route('/export')
|
||
@login_required
|
||
@admin_required
|
||
def export_books():
|
||
# 获取查询参数
|
||
search = request.args.get('search', '')
|
||
category_id = request.args.get('category_id', type=int)
|
||
|
||
query = Book.query
|
||
|
||
if search:
|
||
query = query.filter(
|
||
(Book.title.contains(search)) |
|
||
(Book.author.contains(search)) |
|
||
(Book.isbn.contains(search))
|
||
)
|
||
|
||
if category_id:
|
||
query = query.filter_by(category_id=category_id)
|
||
|
||
books = query.all()
|
||
|
||
# 创建DataFrame
|
||
data = []
|
||
for book in books:
|
||
category_name = book.category.name if book.category else ""
|
||
data.append({
|
||
'id': book.id,
|
||
'title': book.title,
|
||
'author': book.author,
|
||
'publisher': book.publisher,
|
||
'category': category_name,
|
||
'tags': book.tags,
|
||
'isbn': book.isbn,
|
||
'publish_year': book.publish_year,
|
||
'description': book.description,
|
||
'stock': book.stock,
|
||
'price': book.price,
|
||
'status': '上架' if book.status == 1 else '下架',
|
||
'created_at': book.created_at.strftime('%Y-%m-%d %H:%M:%S') if book.created_at else '',
|
||
'updated_at': book.updated_at.strftime('%Y-%m-%d %H:%M:%S') if book.updated_at else ''
|
||
})
|
||
|
||
df = pd.DataFrame(data)
|
||
|
||
# 创建临时文件
|
||
timestamp = datetime.datetime.now().strftime('%Y%m%d%H%M%S')
|
||
filename = f'books_export_{timestamp}.xlsx'
|
||
filepath = os.path.join(current_app.static_folder, 'temp', filename)
|
||
|
||
# 确保目录存在
|
||
os.makedirs(os.path.dirname(filepath), exist_ok=True)
|
||
|
||
# 写入Excel
|
||
df.to_excel(filepath, index=False)
|
||
|
||
# 提供下载链接
|
||
return redirect(url_for('static', filename=f'temp/{filename}'))
|