devsearch

1. devsearch - django project
2. projects - django app in djangoproject start project
3. templates - html templates with file project with the name of the projects

Database Relationships

1. One-To-One - One Table record can relate to one record in another table
2. One-To-Many - One table record can relate to many records in another table
   1. using forign key in many table
3. Many-To-Many - occurs when multiple records in one table are associated with multiple records in another table
   1. using a table, intermediary table that records FK in table. Django does it by default

Models

    #attribute is attribute of model class
    queryset = ModelName.objects.all()
    .get()
    .get(attribute='value')
    .filter()
    .filter(attribute__startswith='value')
    .filter(attribute__contains='value')
    .filter(attribute__icontains='value') #ingore case
    .filter(attribute__gt='value') #greater than
    .filter(attribute__gte='value')
    .filter(attribute__lt='value') #less than and equal to
    .filter(attribute__lte='value')
    .exclude()
    .exclude(attribute='value')
    .filter().order_by('key1', '-key2') #- equals descending
    .create(attribute='value') # Create instance of model
    .save() # save instance of model
    .attribute = "New Value"
    .last()
    object.delete()
    object.childmodel_set.all()
    object.relationshipname.all()

form references

  {{form.as_p}}
  form.field
  form.field.label
  {% for field in form %}
  

1. can also update form types by overwriding constructor for modelforms and updating fields

Static Files

1. create static directory and sub directories images, styles, and js in base_dir

2. update STATICFILES_DIR variable in settings.js

3. when using static files you must load static files {% load static %}

4. Can reference static files like this <link rel="stylesheet" href='{% static "styles/main.css" %}'>

5. Set This directory in order to provide where to upload image content MEDIA_ROOT = BASE_DIR / 'static/images'

6. create MEDIA_URL in settings.py and configure MEDIA_ROOT to MEDIA_URL - urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

7. update forms form = ProjectForm(request.POST,request.FILES, instance=project)

8. update enctype for images

<form action="" method ="POST" enctype="multipart/form-data">
        {% csrf_token %}
        {{form.as_p}}
        <input type="submit">
    </form>

9. Create 'Static_ROOT' variable in setting.py - defines where static files in production will be
10. set this as 'BASE_DIR / 'staticfiles' - run python manage.py collectstatic
    1. creates staticfile folder for production
    2. Will be changed to third party tool in the future
11. When Setting DEBUG=False - URLS set in production for static is what will show. python manage.py collectstatic
12. 'pip install whitenoise` - is required to serve static files
13. add the following as middleware "whitenoise.middleware.WhiteNoiseMiddleware",