Python Web Development Module Django2.2 study notes -1 (Django process of making web pages briefly: (only for windows))

Create a virtual environment/python -m venv <venv_name>
Activating virtual environment/<venvname>/Scripts/activate
Create a project/django-admin.py startproject <project_name>
Create a database/python manage.py migrate
Run the server/python manage.py migrate
Creating App / Python manage.py <app_name>
Adding superuser/python manage.py createsuperuer
Definition model:
Open a folder <app_name> models.py file, create a model (i.e., the definition of a class)
Activation model:
Open <project_name> /setting.py, the <app_name> added to the INSTALLED_APPS
Register Model
Open <app_name> /admin.py, introduced into the model, and register the model
Migration model /python manage.py makemigrations, /python manage.py migrate
due model.py Edit, create church Django how to modify the migration file database, and then apply the migration
Configuration URL:
Open <project_name> /urls.py, introduction <app_name> of views (app automatically generated when creating the document), increasing url mode
two kinds of modes url structure currently understood:
A mode to increase a url:
path('', views.<view_function_name>[, name='<urlpattern_name>'])
''Representative is requested to the part after the body of the page, for example, the embodiment refers to http: // localhost: 8000, if the ''replace 'about/'said page request http: // localhost:. 8000 / about /
viewsis a file <app_name > /views.py, view_function_namerefer to the referenced return web content view function, which will edit the subsequent steps
name='<urlpattern_name>'(optional) refers to this url model name, so that we can refer to it elsewhere in the code. Whenever the need to provide a link to the home page, we will use this name, URL and not write
two adding a set of url patterns:
path('', include('<other urlpattern>'[, namespace='<namespace_name>']))
If the <app_name> /urls.py create a new extra_urlpatterns in the current file, then the 'other urlpattern'Replace 'extra_urlpatterns', which can be combined so that urlpatterns view url handler
reference: https://docs.djangoproject.com/zh-hans/2.2/topics/http/urls/
namespace='<namespace_name>' (optional) means able to let the URL learning_logs other projects in the URL area with separate, which is helpful when the project began to expand.
Reference: "Python Programming: from entry to practice" on page 193
Write view function:
Open the <project_name> /views.py, write the function
currently two ways to understand
a very simple if website content, import HttpResponse, to convert a string of HTML code into the HTML code.
from django.http import HttpResponse
...
return HttpResponse("<h1>Hello World!</h1>")
two complex web content, will be certain. html file as a parameter is added to the render (request, '<html file>') function
return render(request, 'learning_logs/index.html')
Authoring templates (if used during the preparation of view function is a simple web method, naturally without template):
two ways:
A no inheritance:
the direct line and the code it wants
two inherited from the parent template:
Note the parent and child template formatting template
reference: "Python programming: from entry to practice" & 194 193

Python Web Development Module Django2.2 study notes -1 (Django process of making web pages briefly: (only for windows))

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