Evgenij LegotskojOct. 4, 2016, 12:09 p.m.

Django - Tutorial 012. Site search with pagintaion based on Django

For the organization of the search on the site, which is based on the Django , and uses a PostgreSQL database, you can use the module to search through the database that comes with Django. Especially because the search for full-text search provides sufficiently for a small site.

But in order to issue search queries looked more like the home page, the ability to add pagination of pages of issue, and the results will be displayed on the 10 pieces on the same page. And for that, we will also use django_bootstrap3 module.

As a result, we have the following plan of action:

  1. Adding an application to search for the organization;
  2. Adding search url;
  3. Add a search box;
  4. This search page template.
  5. Describes the representation for issuing the search processing;

Adding to the search application

Standard step to create a new application in your project Django:

python manage.db startapp search

At the output we get a new application with the following structure:

search/
    migrations/
        __init__.py
    __init__.py
    admin.py
    apps.py
    models.py
    tests.py
    views.py

Will correct a little bit settings.py file. We add our application configuration, use the one that is created by default, and use the two modules:

  1. For work with postgres
  2. django_bootstrap3
INSTALLED_APPS = [
    ...
    'search.apps.SearchConfig',
    'django.contrib.postgres',
    'bootstrap3',
    ...
]

Addin urls for search

First, you should add the url pattern that will send a request to the search application.

from django.conf.urls import url, include

urlpatterns = [
    ...
    url(r'^search/', include('search.urls')),
]

Secondly, you should to add urls.py file to search the app itself with the following content to adjust the query sent to the view.

from django.conf.urls import url

from . import views

app_name = 'search'
urlpatterns = [
    url(r'^$', views.ESearchView.as_view(), name='index'),
]

Search form

Search form is added to the base base.html pattern in home application, which will inherit the template search page.

Here is the version that is used on this site using django-bootstrap3 .

{% load bootstrap3 %}
<form action="{% url 'search:index' %}" class="navbar-form navbar-left" method="get">
    <div class="input-group">
        <input id="search" name="q" type="text" class="form-control" placeholder="Поиск">
        <span class="input-group-btn">
            <button type="submit" class="btn btn-default">{% bootstrap_icon 'search' %}</button>
        </span>
    </div>
</form>

We will understand in the key points:

  1. The action field indicates the address where the request is sent;
  2. It will use the GET method because the user may want to share the search result;
  3. bootstrap_icon loads of icons set glyphicons.

Search page template

For the issuance of the results of the organization, I used the appearance of the same, as well as on the home page. Read more about this you can read in the article about the implementing of pagination .

But the most important difference from the home page is that somehow it is necessary to combine flipping pages with pagination and save the query. To do this, you can substitute a customized URL into bootstrap_pagination . Namely url=last_question , which will contain the last query that was specified in the search box. By this URL will be automatically added to the page number.

{% extends 'home/base.html' %}
{% load bootstrap3 %}
{% block page %}
    <h1>Поиск</h1>
    {% if article_lists %}
        {% for article in article_lists %}
            <article>
                <a href="{{ article.get_absolute_url }}">
                    <h2>{{ article.article_title }}</h2>
                </a>
                {{ article.desctription|safe }}
                <p><a class="btn btn-default btn-sm" href="{{ article.get_absolute_url }}">Читать далее</a></p>
            </article>
        {% endfor %}
        {% bootstrap_pagination article_lists url=last_question %}
    {% else %}
        <p>Не найдено публикаций по вашему запросу<br>Попробуйте повторить запрос с другой формулировкой</p>
    {% endif %}
{% endblock %}

Search view

The important point here is that the query should be prepared URL, which will contain the last request, and substituted in the paging buttons. Otherwise, when you click the search button, pagination is erroneous and likely will receive 500 error .

from django.shortcuts import render_to_response
from django.core.paginator import Paginator, PageNotAnInteger, EmptyPage
from django.views import View

from knowledge.models import Article


class ESearchView(View):
    template_name = 'search/index.html'

    def get(self, request, *args, **kwargs):
        context = {}

        question = request.GET.get('q')
        if question is not None:
            search_articles = Article.objects.filter(article_content__search=question)

            # forming a URL string that will contain the last request. 
            # This is important for correct operation of pagination
            context['last_question'] = '?q=%s' % question

            current_page = Paginator(search_articles, 10)

            page = request.GET.get('page')
            try:
                context['article_lists'] = current_page.page(page)
            except PageNotAnInteger:
                context['article_lists'] = current_page.page(1)
            except EmptyPage:
                context['article_lists'] = current_page.page(current_page.num_pages)

        return render_to_response(template_name=self.template_name, context=context)

For Django I recommend VDS-server of Timeweb hoster .

We recommend hosting TIMEWEB
We recommend hosting TIMEWEB
Stable hosting, on which the social network EVILEG is located. For projects on Django we recommend VDS hosting.
Support the author Donate

Comments

Only authorized users can post comments.
Please, Log in or Sign up
Timeweb

Let me recommend you the excellent hosting on which EVILEG is located.

For many years, Timeweb has been proving his stability.

For projects on Django I recommend VDS hosting

View Hosting
L

C++ - Test 001. The first program and data types

  • Result:80points,
  • Rating points4
DTs

C++ - Test 001. The first program and data types

  • Result:46points,
  • Rating points-6
SB

Qt - Test 001. Signals and slots

  • Result:94points,
  • Rating points8
Last comments
JaO

Как соответствовать новым требованиям Google Play

Ку всем! Вопрос! Как с помощью JNI вызвать оплату на android устройстве? Попробовал Qt Purchasing вроде пошло... но android пишет что библиотека устарела. В qt6 пока поддержки purchasing нет. Р…

Django - Tutorial 014. Displays a list of popular articles on Django

Я как понял, этот метод создает статистику каждый день (на каждый день), не удаляя старые данные за день и выводит все данные за сегодняшние просмотры у всех статей?

Qt/C++ - Lesson 006. QSqlQueryModel – Tables in Qt with SQL-query

Изменить запрос при создании модели.
L
  • Livis
  • May 30, 2021, 1:18 p.m.

Django - Tutorial 001. Deploying a site on Django + PostgreSQL + Gunicorn + Nginx

Отвечал на все команды после sudo service supervisor start Исправил таким образом sudo killall supervisordsudo supervisord -c /etc/supervisor/supervisord.conf
D

Django - Tutorial 001. Deploying a site on Django + PostgreSQL + Gunicorn + Nginx

Это на какую команду так отвечает?
Now discuss on the forum
v
  • vika
  • June 17, 2021, 12:19 a.m.

Вопрос новичка ui-форма

все получилось. создала обьект, исправила ошибки и все заработало. спасибо, что есть с кем поговорить.
s

Ключевое слово class

Разобрался,на стаковерфлоу нашел топик и понял почему так происходило .
KM

Django как воспользоваться результатом метода?

Priv = 2020 Now = 2021 Next = 2022 Rok = ( (None, "Nie wybran"), (Priv, '2020'), (Now, '2021'), (Next, '2022') ) Rok = models.IntegerField(choices=Rok, de…

QScrollArea dynamically add QCheckBoxes

Всё правильно. Это просто спамер, который отправился в вечный бан.

Папка с шаблоном сайта

Есть проект с поддержкой динамического создания поддоменов. Как назначить разные пути к шаблонам в templates from django.shortcuts import renderfrom horticulture.utilities import get_horticu…
About
Services
© EVILEG 2015-2021
Recommend hosting TIMEWEB