Ejemplo-01

Backend con Python > Sesión 06 > Ejemplo-01

Conociendo e instalando Django Graphene

OBJETIVO

• Conocer Django Grahene
• Instalar Django Grahene

REQUISITOS

1. Actualizar repositorio
2. Usar la carpeta de trabajo Sesion-07/Ejemplo-01
3. Activar el entorno virtual BeduTravels
4. Django Graphene es un módulo construido encima de Django que simplifica la creación de un API GraphSQL con todos los requerimientos que requiere. Algunas referencias son:

• Sitio principal: https://github.com/graphql-python/graphene-django
• Sito en PyPi: https://pypi.org/project/graphene-django
• Guía rápida: https://pypi.org/project/graphene-django
• Documentación: https://docs.graphene-python.org/projects/django/en/latest
• Sitio principal de Graphene: https://graphene-python.org
• Sitio oficial de GraphQL: https://graphql.org

DESARROLLO

1. INSTALACIÓN de Django Graphene se realiza con el comando pip de la siguiente forma:

   (BeduTravels) Sesion-07/Ejemplo-01 $ pip install graphene-django
   Collecting graphene-django
     Downloading https://files.pythonhosted.org/packages/f6/b2/557c2d6f16dac23622eb3227e11d20384f3eb9210e2403d736211f7d2e51/graphene_django-2.4.0-py2.py3-none-any.whl (66kB)
        |████████████████████████████████| 71kB 438kB/s
   Collecting graphql-core<3,>=2.1.0 (from graphene-django)
     Downloading https://files.pythonhosted.org/packages/6a/11/bc4a7eb440124271289d93e4d208bd07d94196038fabbe2a52435a07d3d3/graphql_core-2.2.1-py2.py3-none-any.whl (250kB)
        |████████████████████████████████| 256kB 1.6MB/s
   Collecting six>=1.10.0 (from graphene-django)
     Using cached https://files.pythonhosted.org/packages/73/fb/00a976f728d0d1fecfe898238ce23f502a721c0ac0ecfedb80e0d88c64e9/six-1.12.0-py2.py3-none-any.whl
   Collecting promise>=2.1 (from graphene-django)
     Downloading https://files.pythonhosted.org/packages/5a/81/221d09d90176fd90aed4b530e31b8fedf207385767c06d1d46c550c5e418/promise-2.2.1.tar.gz
   Requirement already satisfied: Django>=1.11 in /home/rctorr/miniconda3/envs/BeduTravels/lib/python3.7/site-packages (from graphene-django) (2.2.2)
   Collecting graphene<3,>=2.1.3 (from graphene-django)
     Downloading https://files.pythonhosted.org/packages/05/7b/a0f0e846e9418abd4addde6c29c132d407dee48995be425f797cae45ad86/graphene-2.1.7-py2.py3-none-any.whl (107kB)
        |████████████████████████████████| 112kB 5.0MB/s
   Collecting singledispatch>=3.4.0.3 (from graphene-django)
     Downloading https://files.pythonhosted.org/packages/c5/10/369f50bcd4621b263927b0a1519987a04383d4a98fb10438042ad410cf88/singledispatch-3.4.0.3-py2.py3-none-any.whl
   Collecting rx<3,>=1.6 (from graphql-core<3,>=2.1.0->graphene-django)
     Downloading https://files.pythonhosted.org/packages/33/0f/5ef4ac78e2a538cc1b054eb86285fe0bf7a5dbaeaac2c584757c300515e2/Rx-1.6.1-py2.py3-none-any.whl (179kB)
        |████████████████████████████████| 184kB 4.0MB/s
   Requirement already satisfied: sqlparse in /home/rctorr/miniconda3/envs/BeduTravels/lib/python3.7/site-packages (from Django>=1.11->graphene-django) (0.3.0)
   Requirement already satisfied: pytz in /home/rctorr/miniconda3/envs/BeduTravels/lib/python3.7/site-packages (from Django>=1.11->graphene-django) (2019.1)
   Collecting graphql-relay<3,>=2 (from graphene<3,>=2.1.3->graphene-django)
     Downloading https://files.pythonhosted.org/packages/85/52/0242f2d01a3b925bc200928a2a88925b915b88efcb31c67e966991aa4dee/graphql_relay-2.0.0-py3-none-any.whl
   Collecting aniso8601<=6,>=3 (from graphene<3,>=2.1.3->graphene-django)
     Downloading https://files.pythonhosted.org/packages/85/58/1e804d6d53435b1b2241036056360575640b69a332e7ead086a04bd5ad95/aniso8601-6.0.0-py2.py3-none-any.whl (41kB)
        |████████████████████████████████| 51kB 9.9MB/s
   Building wheels for collected packages: promise
     Building wheel for promise (setup.py) ... done
     Stored in directory: /home/rctorr/.cache/pip/wheels/92/84/9f/75e2235effae0e1c5a5c0626a503e532bbffcb7e79e672b606
   Successfully built promise
   Installing collected packages: rx, six, promise, graphql-core, graphql-relay, aniso8601, graphene, singledispatch, graphene-django
   Successfully installed aniso8601-6.0.0 graphene-2.1.7 graphene-django-2.4.0 graphql-core-2.2.1 graphql-relay-2.0.0 promise-2.2.1 rx-1.6.1 singledispatch-3.4.0.3 six-1.12.0
   
   (BeduTravels) Sesion-07/Ejemplo-01 $

   Se actualiza el archivo requeriments.txt para incluir el módulo instalado:

   (BeduTravels) Sesion-07/Ejemplo-01 $ pip freeze > BeduTravels/requeriments.txt
   
   (BeduTravels) Sesion-07/Ejemplo-01 $ cat BeduTravels/requeriments.txt
   aniso8601==6.0.0
   certifi==2019.3.9
   chardet==3.0.4
   defusedxml==0.6.0
   Django==2.2.2
   django-allauth==0.39.1
   djangorestframework==3.9.4
   graphene==2.1.7
   graphene-django==2.4.0
   graphql-core==2.2.1
   graphql-relay==2.0.0
   idna==2.8
   oauthlib==3.0.2
   promise==2.2.1
   python3-openid==3.1.0
   pytz==2019.1
   requests==2.22.0
   requests-oauthlib==1.2.0
   Rx==1.6.1
   singledispatch==3.4.0.3
   six==1.12.0
   sqlparse==0.3.0
   urllib3==1.25.3
   
   (BeduTravels) Ejemplo-01 $

   Esta lista de módulos puede variar de una sistema operativo a otro y de una versión a otra de Python, pero el módulo que hemos instalado y debe aparecer es graphene-django.

Nota: Recuerda añadir el archivo BeduTravels/requeriments.txt a tu repo para que ya sea tú o tú equipo pueda replicar el entorno de desarrollo y además sea homogéneo.