Django 입문 강좌 노트(3)

# if, ifequal, ifnotequal, for(forloop), 
# cycle
{% for o in some_list %}
    
        ...
    
{% endfor %}
# {# #} comment, csrf_token, debug, filter, autoescape, firstof, load
# now, lorem, spaceless, url, verbatim, with ...
#            

{{ value | lower }}
# upper, add, cut, date, default, default_if_none, escape, dictsort
# join, length, safe, slice, title, urlencode, truncatechars, striptags

{% include 'sub.html' with val='val' %}
{% extends 'base.html' %}
{% block name %} ... {% endblock %}
{{ block.super }}

#   
admin.site.register()
#     ：
@admin.register(Publisher)
class PublisherAdmin(admin.ModelAdmin):
    list_display = ('name','city')
    search_fields
    list_filter
    list_editable
    ordering
    fields/exclude
    fieldsets

# forms.py
from django import forms
class PublisherForm(forms.ModelForm):
    class Meta:
        model = Publisher
        fields = '__all__'
# 
publisher_form = PublisherForm()
{% publisher_form.as_p %}
publisher_form = PublisherForm(request.POST)
#
publisher_form.is_valid()
    publisher_form.save()

from django import forms
class PublisherForm(forms.Form):
    name = forms.CharField(label, error_messages={'required':'   '})
    ...
# 
publisher_form = PublisherForm()
{% publisher_form.as_p %}
publisher_form = PublisherForm(request.POST)
#
publisher_form.is_valid()
name = publisher_form.cleaned_data['name']
...

# forms.py
#
from django.core.exceptions import ValidationError
from django.utils.translation import ugettext_lazy as _
# 
def validate_even(value):
    if value % 2 != 0:
        raise ValidationError(
            _('%(value)s is not an even number'),
            params={'value': value},
        )
#     raise ValidationError('message')
#     except Publisher.DoesNotExist
#
# models.py
#
from django.db import models
# 
class MyForm(forms.ModelForm):
    even_field = forms.IntegerField(validators=[validate_even])

# forms.py    ModelForm      
class PublisherForm(forms.ModelForm):
    def clean_name(self):
        value = self.cleaned_data.get('name')
        ... //     
    return value

# forms.py    ModelForm      
class PublisherForm(forms.ModelForm):
    def clean(self):
        cleaned_data = super(PublisherForm, self).clean()
        value = cleanen_data.get('name')
        #        raise ValidationError
        sefl._errors['name'] = self.error_class(['message']) 
        ...
        return cleaned_data //