Flask-paginate 在一页上显示所有结果

Question

我正在尝试为产品页面设置分页，如下所示from flask_paginate import Pagination, get_page_parameter...page = request.args.get(get_page_parameter(), type=int, default=1)per_page = 4offset = (page) * 10search = Falseq = request.args.get('q')if q:    search = Truepagination = Pagination(page=page, per_page=per_page, offset=offset, total=len(products), search=search, record_name='products')return render_template('products.html', form=form, products=products, subcategories=subcategories, pagination=pagination)而“产品”是从代码中的先前请求中获取的cur.execute("SELECT * FROM products")products = cur.fetchall()但是，在我的产品页面上，我取回了数据库中的所有产品（目前为 20 个），而我可以看到{{ pagination.info }}显示“总共显示 1-4 个产品，共 20 个”。也{{ pagination.links }}工作正常，因为它显示了功能分页链接，但所有产品仍然在页面上可见。你有什么提示可以解决这个问题吗？

Answer 1

我找到了解决这个问题的方法。也许不是最好的，如果你知道更好的方法，请告诉我。目前，我已经通过以下方式解决了这个问题：

# Creating a cursor

cur = conn.cursor()

# Setting page, limit and offset variables

per_page = 4

page = request.args.get(get_page_parameter(), type=int, default=1)

offset = (page - 1) * per_page

# Executing a query to get the total number of products

cur.execute("SELECT * FROM products")

total = cur.fetchall()

# Executing a query with LIMIT and OFFSET provided by the variables above

cur.execute("SELECT * FROM products ORDER BY added_on DESC LIMIT %s OFFSET %s", (per_page, offset))

products = cur.fetchall()

# Closing cursor

cur.close()

...

# Setting up the pagination variable, where you are using len(total) to set the total number of 

# items available

pagination = Pagination(page=page, per_page=per_page, offset=offset, total=len(total), 

record_name='products')

# Render template, where you pass "products" variable

# for the prepared query with LIMIT and OFFSET, and passing "pagination" variable as well.

return render_template('products.html', form=form, products=products, pagination=pagination)