Question

我正在尝试为商品页面设置分页，就像这样

from flask_paginate import Pagination, get_page_parameter

...

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

per_page = 4
offset = (page) * 10

search = False
q = request.args.get('q')
if q:
    search = True


pagination = 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)

从代码中的上一个请求中提取“产品”时

cur.execute("SELECT * FROM products")
products = cur.fetchall()

但是，在我的产品页面上，我正在取回数据库中的所有产品（当前为20），同时我看到{{ pagination.info }}显示“总共显示1-4个产品”。

{{ pagination.links }}也正常工作，因为它显示了功能的分页链接，但所有产品仍在页面上可见。您有什么解决办法的提示吗？

谢谢

Answer 1

我找到了解决方案。可能不是最好的方法，如果您知道更好的方法，请告诉我。现在，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)

Flask-paginate在一页上显示所有结果

1 个答案: