Paginator to generate page numbers for pagination
pip install py-paginator- app.py
from flask import Flask, request, render_template
from py_paginator import Paginator
app = Flask(__name__)
app.jinja_env.add_extension('jinja2.ext.do')
@app.route('/')
def home():
page = int(request.args.get('page', 1))
limit = 20
records_count = get_records_count() # get records count from storage
paginator = Paginator(total_items=records_count, item_limit=limit, curr_page=page)
records = get_records(limit=paginator.item_limit, offset=paginator.item_offset) # get records from storage
return render_template('home.html', records=records, paginator=paginator)Here paginator.item_limit and paginator.item_offset can be used in database query to apply limit. paginator object can be used in templates to create pagination links.
- templates/macros.html
{#
:paginator: Paginator object
:endpoint: flask request endpoint
:pager: If True it will show a pager instead of numbered pagination
- you can also pass further arguments that will be passed into `url_for()` of every link.
#}
{% macro render_pagination(paginator, endpoint=request.endpoint, pager=False) %}
{% if paginator.has_pages %}
{% do kwargs.update(request.args) %}
{% do kwargs.pop('page', None) %}
<nav aria-label="Page navigation">
{% if pager %}
{% set pager = paginator.get_pager() %}
<ul class="pager">
<li class="previous{% if not paginator.has_prev %} disabled{% endif %}">
{% do kwargs.update({'page': pager.prev}) %}
<a href="{% if paginator.has_prev %}{{ url_for(endpoint, **kwargs) }}{% else %}#{% endif %}"><span aria-hidden="true">«</span> Prev</a>
</li>
<li class="next{% if not paginator.has_next %} disabled{% endif %}">
{% do kwargs.update({'page': pager.next}) %}
<a href="{% if paginator.has_next %}{{ url_for(endpoint, **kwargs) }}{% else %}#{% endif %}">Next <span aria-hidden="true">»</span></a>
</li>
</ul>
{% else %}
<ul class="pagination">
{% for page_type, page_num in paginator.get_pages() %}
{% do kwargs.update({'page': page_num}) %}
{% if page_type == 'prev' %}
{% if page_num %}
<li><a href="{{ url_for(endpoint, **kwargs) }}" aria-label="Previous"><span aria-hidden="true">«</span></a></li>
{% else %}
<li class="disabled"><span><span aria-hidden="true">«</span></span></li>
{% endif %}
{% elif page_type == 'next' %}
{% if page_num %}
<li><a href="{{ url_for(endpoint, **kwargs) }}" aria-label="Next"><span aria-hidden="true">»</span></a></li>
{% else %}
<li class="disabled"><span><span aria-hidden="true">»</span></span></li>
{% endif %}
{% elif page_type == 'ellip' %}
<li class="disabled"><span><span aria-hidden="true">…</span></span></li>
{% elif page_type == 'curr' %}
<li class="active"><span>{{ page_num }}</span></li>
{% else %}
<li><a href="{{ url_for(endpoint, **kwargs) }}">{{ page_num }}</a></li>
{% endif %}
{% endfor %}
</ul>
{% endif %}
</nav>
{% endif %}
{% endmacro %}- templates/home.html
{% from "macros.html" import render_pagination with context %}
<h1>Total Records: {{ paginator.total_items }}</h1>
<h2>Total Pages: {{ paginator.total_pages }}</h2>
{% for record in records %}
<p>{{ loop.index + paginator.item_offset }} - {{ record.field_name }}</p>
{% else %}
<p>No Records found.</p>
{% endfor %}
{{ render_pagination(paginator) }}