Add images to finds (refs #1314)

* an abstract model class has been defined to manage image and thumbnail
  with resizing on the fly
* max size for images and thumbnails are set in project settings
* new field have been added to Find model to save images and thumbnails
* form and wizard of Find have been changed

1 files changed, 14 insertions, 3 deletions

diff --git a/archaeological_finds/models.py b/archaeological_finds/models.py
index 4b1e95e34..8fb18385b 100644
--- a/archaeological_finds/models.py
+++ b/archaeological_finds/models.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
-# Copyright (C) 2012 Étienne Loks  <etienne.loks_AT_peacefrogsDOTnet>
+# Copyright (C) 2012-2013 Étienne Loks  <etienne.loks_AT_peacefrogsDOTnet>
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as
@@ -22,7 +22,7 @@ from django.contrib.gis.db import models
 from django.db.models import Max
 from django.utils.translation import ugettext_lazy as _, ugettext
 
-from ishtar_common.models import GeneralType, BaseHistorizedItem, \
+from ishtar_common.models import GeneralType, ImageModel, BaseHistorizedItem, \
               LightHistorizedItem, HistoricalRecords, OwnPerms, Source, Person
 
 from archaeological_operations.models import AdministrativeAct
@@ -130,7 +130,7 @@ class BaseFind(BaseHistorizedItem, OwnPerms):
                            self.context_record.label,
                            lbl) if it])
 
-class Find(BaseHistorizedItem, OwnPerms):
+class Find(BaseHistorizedItem, ImageModel, OwnPerms):
     TABLE_COLS = ['label', 'material_type', 'dating.period',
                   'base_finds.context_record.parcel.town',
                   'base_finds.context_record.operation.year',
@@ -145,6 +145,10 @@ class Find(BaseHistorizedItem, OwnPerms):
     order = models.IntegerField(_(u"Order"))
     label = models.CharField(_(u"ID"), max_length=60)
     description = models.TextField(_(u"Description"), blank=True, null=True)
+    """
+    image = models.ImageField(upload_to="finds/", blank=True, null=True)
+    thumbnail = models.ImageField(upload_to='finds/thumbs/', blank=True,
+                                  null=True)"""
     material_type = models.ForeignKey(MaterialType,
                               verbose_name = _(u"Material type"))
     volume = models.FloatField(_(u"Volume (l)"), blank=True, null=True)
@@ -160,6 +164,13 @@ class Find(BaseHistorizedItem, OwnPerms):
                                   blank=True, null=True, related_name='finds')
     history = HistoricalRecords()
 
+    def __init__(self, *args, **kwargs):
+        super(Find, self).__init__(*args, **kwargs)
+        image = self._meta.get_field_by_name("image")[0]
+        image.upload_to = "finds/"
+        thumbnail = self._meta.get_field_by_name("thumbnail")[0]
+        thumbnail.upload_to = "finds/thumbs/"
+
     @classmethod
     def get_years(cls):
         years = set()