This class works in compatibility with a ModelForm, but instead of show a form, it shows the field values.
The Meta class attributes can be used to customize fields to show, to be excluded, to divide by sections, to urlize text fields, etc.
Example 1:
class InfoSingleCertificate(ModelInfo):
class Meta:
model = SingleCertificate
sections = (
(None, ('vessel','description','document','comments','status',)),
('Issue', ('issue_date','issue_authority','issue_location',)),
)
Example 2:
class InfoSingleCertificate(ModelInfo):
class Meta:
model = SingleCertificate
fields = ('vessel','description','document','comments','status',
'issue_date','issue_authority','issue_location',)
How to use:
Just save this snippet as a file in your project, import to your views.py module (or a new module named "info.py") and create classes following seemed sytax you use for ModelForms.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 | from django.utils.safestring import mark_safe
from django.db import models
from django.template.defaultfilters import yesno, linebreaksbr, urlize
from django.utils.translation import get_date_formats
from django.utils.text import capfirst
from django.utils import dateformat
class ModelInfo(object):
class _Meta:
model = None
fields = ()
exclude = ()
sections = None
row_template = '<tr><th>%s</th><td>%s</td></tr>'
show_if_none = False
auto_urlize = True
auto_linebreaks = True
def __init__(self, instance, *args, **kwargs):
self.instance = instance
self._meta = self.Meta()
_meta = self._Meta()
for attr in ('model','fields','exclude','sections','row_template','show_if_none',
'auto_urlize','auto_linebreaks',):
if not hasattr(self._meta, attr):
setattr(self._meta, attr, getattr(_meta, attr))
def get_model_fields(self):
return [f.name for f in self._meta.model._meta.fields \
if f.name != 'id' and \
(f.name in self._meta.fields or \
not f.name in self._meta.exclude)\
]
def get_field(self, f_name):
return [f for f in self._meta.model._meta.fields if f.name == f_name][0]
def get_field_display_text(self, f_name):
return self.get_field(f_name).verbose_name
def get_field_display_value(self, f_name):
field = self.get_field(f_name)
try:
return getattr(self, 'get_%s_value'%f_name)
except:
pass
f_value = getattr(self.instance, f_name)
if f_value is None:
return None
if callable(f_value):
return f_value()
if isinstance(f_value, models.Model):
if self._meta.auto_urlize and hasattr(f_value, 'get_absolute_url'):
return '<a href="%s">%s</a>'%(f_value.get_absolute_url(), f_value)
else:
return unicode(f_value)
if field.choices:
return dict(field.choices).get(f_value, None)
if isinstance(field, models.BooleanField):
return yesno(f_value)
date_format, datetime_format, time_format = get_date_formats()
if isinstance(field, models.DateTimeField):
return capfirst(dateformat.format(f_value, datetime_format))
if isinstance(field, models.TimeField):
return capfirst(dateformat.time_format(f_value, time_format))
if isinstance(field, models.DateField):
return capfirst(dateformat.format(f_value, date_format))
if isinstance(field, models.TextField):
if self._meta.auto_urlize: f_value = urlize(f_value)
if self._meta.auto_linebreaks: f_value = linebreaksbr(f_value)
return f_value
def as_string(self):
ret = []
sections = self._meta.sections or ((None, self._meta.fields or self.get_model_fields()),)
for s_name, s_fields in sections:
if s_name:
ret.append(self._meta.row_template%(' ', '<h3>%s</h3>'%s_name))
for f_name in s_fields:
f_display = self.get_field_display_text(f_name)
f_display = f_display[0] == f_display[0].lower() and f_display.capitalize() or f_display
f_value = self.get_field_display_value(f_name)
if self._meta.show_if_none or f_value is not None:
ret.append(self._meta.row_template%(f_display, f_value))
return mark_safe('\n'.join(ret))
def __unicode__(self):
return self.as_string()
|
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Comments
Fixed methods get_model_fields and get_field
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I'm using this, thanks marinho.
One question: It's been a while since you posted this, are you still using it, or is there now a better way to get this info easily?
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