Python Django 3 : Install

 Install Django which is Python Web Application Framework.

[1]. Install some packages.

[root@dlp ~]# dnf -y install python3-virtualenv

[2]. Install Django under an Virtualenv environment. It's possible to do for any common user.

[cent@dlp ~]$ virtualenv venv

[cent@dlp ~]$ cd ~/venv

[cent@dlp venv]$ source bin/activate

(venv) [cent@dlp venv]$ pip install django==3.0

.....

.....

Installing collected packages: pytz, sqlparse, asgiref, django

Successfully installed asgiref-3.2.3 django-3.0 pytz-2019.3 sqlparse-0.3.0


(venv) [cent@dlp venv]$ django-admin --version

3.0

# exit from virtualenv

(venv) [cent@dlp venv]$ deactivate

[cent@dlp venv]$

[3]. Create a test project.

If Firewalld is running and also access to Django from other Hosts, Allow ports you plan to use with root privilege before it. (example below uses [8000/tcp])

[cent@dlp ~]$ cd ~/venv

[cent@dlp venv]$ source bin/activate

# create testproject

(venv) [cent@dlp venv]$ django-admin startproject testproject

(venv) [cent@dlp venv]$ cd testproject

# configure database (default is SQLite)

(venv) [cent@dlp testproject]$ python manage.py migrate

# create admin user

(venv) [cent@dlp testproject]$ python manage.py createsuperuser

Username (leave blank to use 'cent'): cent

Email address: cent@dlp.srv.world

Password:

Password (again):

Superuser created successfully.

(venv) [cent@dlp testproject]$ vi testproject/settings.py

# line 28: set if you allow to access to Django from other Hosts

# specify Hosts with comma separated

# if allow all, specify like follows

ALLOWED_HOSTS = ['*']

# start server

(venv) [cent@dlp testproject]$ python manage.py runserver 0.0.0.0:8000

Watching for file changes with StatReloader

Performing system checks...


System check identified no issues (0 silenced).

December 13, 2019 - 03:49:56

Django version 3.0, using settings 'testproject.settings'

Starting development server at http://0.0.0.0:8000/

Quit the server with CONTROL-C.


[4]. Access to the [http://(server's hostname or IP address):8000/] from a client computer. It's OK if following site is displayed normally.


[5]. It's possible to use admin site on

 [http://(server's hostname or IP address):8000/admin].


[6] Create a test application to try to use Django.

[cent@dlp ~]$ cd ~/venv

[cent@dlp venv]$ source bin/activate

(venv)[cent@dlp venv]$ cd testproject

(venv)[cent@dlp testproject]$ python manage.py startapp test_app

(venv)[cent@dlp testproject]$ vi test_app/views.py

# add to the end

from django.http import HttpResponse

def main(request):

    html = '<html>\n' \

           '<body>\n' \

           '<div style="width: 100%; font-size: 40px; font-weight: bold; text-align: center;">\n' \

           'Django Test Page\n' \

           '</div>\n' \

           '</body>\n' \

           '</html>\n'

    return HttpResponse(html)


(venv)[cent@dlp testproject]$ vi testproject/urls.py

# line 16: add like follows

from django.contrib import admin

from django.urls import path, include

urlpatterns = [

    path('admin/', admin.site.urls),

    path('test_app/', include('test_app.urls')),

]

(venv)[cent@dlp testproject]$ vi test_app/urls.py

# create new

from django.urls import path

from .views import main


urlpatterns = [

    path('', main, name='home')

]

(venv)[cent@dlp testproject]$ vi testproject/settings.py

# line 33: add test application in [INSTALLED_APPS] section

INSTALLED_APPS = (

    'django.contrib.admin',

    'django.contrib.auth',

    'django.contrib.contenttypes',

    'django.contrib.sessions',

    'django.contrib.messages',

    'django.contrib.staticfiles',

    'test_app',

)

(venv)[cent@dlp testproject]$ python manage.py runserver 0.0.0.0:8000

[7]. Access to the [http://(server's hostname or IP address):8000/testapp/] from a client computer. It's OK if testapp is displayed normally.


Comments

Post a Comment

Popular posts from this blog

LINUX Move and copy files using SSH

Often you will need to move one or more files/folders or copy them to a different location. You can do so easily using an SSH connection. The commands which you would need to use are mv (short from move) and cp (short from copy). The mv command syntax looks like this: mv configuration.php-dist configuration.php By issuing the above command we will move (rename) the file configuration.php-dist to configuration.php. You can also use mv to move a whole directory and its content: mv includes/* ./ This will move all files (and folders) in the includes/ directory to the current working directory. In some cases however, we will need to only update the files and move only files that were changed, which we can do by passing ‘ -u ’ as argument to the command: mv -u includes/* admin/includes The copy (cp) command works the same way as mv, but instead of moving the files/folders it copies them. For example: cp configuration.php-dist configuration.php The command will copy the co
Read more

Java : Variables Declaring

[1]. Java Variables Variables are containers for storing data values. In Java, there are different types of variables, for example: String - stores text, such as "Hello". String values are surrounded by double quotes int - stores integers (whole numbers), without decimals, such as 123 or -123 float - stores floating point numbers, with decimals, such as 19.99 or -19.99 char - stores single characters, such as 'a' or 'B'. Char values are surrounded by single quotes boolean - stores values with two states: true or false [2]. Declaring (Creating) Variables To create a variable, you must specify the type and assign it a value: Syntax type variable = value ; Where type is one of Java's types (such as int or String), and variable is the name of the variable (such as x or name). The equal sign is used to assign values to the variable. To create a variable that should store text, look at the following example: Example Create a variable called  name  of type  Stri
Read more

SQL Self JOIN

SQL Self JOIN A self JOIN is a regular join, but the table is joined with itself. Self JOIN Syntax SELECT column_name(s) FROM table1 T1, table1 T2 WHERE condition; T1 and T2 are different table aliases for the same table.
Read more