From 52f6b37f1a1deac66f0b84c466be6c8dab277514 Mon Sep 17 00:00:00 2001
From: Étienne Loks <etienne.loks@iggdrasil.net>
Date: Tue, 5 Jun 2018 20:42:14 +0200
Subject: Document form - refactoring (refs #4107)

---
 ishtar_common/widgets.py | 54 +++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 53 insertions(+), 1 deletion(-)

(limited to 'ishtar_common/widgets.py')

diff --git a/ishtar_common/widgets.py b/ishtar_common/widgets.py
index a20d33fc3..6ec0220eb 100644
--- a/ishtar_common/widgets.py
+++ b/ishtar_common/widgets.py
@@ -458,6 +458,58 @@ class SearchWidget(forms.TextInput):
     template_name = 'widgets/search_input.html'
 
 
+class ModelFieldMixin(object):
+    def to_python(self, value):
+        if not value:
+            return
+        if not self.multiple:
+            value = [value]
+        values = []
+        for v in value:
+            if not v:
+                continue
+            try:
+                values.append(self.model.objects.get(pk=v))
+            except self.model.DoesNotExist:
+                raise ValidationError(
+                    unicode(
+                        _(u"{} is not a valid key for {}")
+                    ).format(v, self.model)
+                )
+        if not self.multiple:
+            return values[0]
+        return values
+
+
+class ModelChoiceField(ModelFieldMixin, forms.ChoiceField):
+    def __init__(self, model, multiple=False, *args, **kwargs):
+        self.model = model
+        self.multiple = multiple
+        super(ModelFieldMixin, self).__init__(*args, **kwargs)
+
+    def valid_value(self, value):
+        if value and getattr(value, 'pk', None) in [v for v, l in self.choices]:
+            return True
+        return super(ModelChoiceField, self).valid_value(value)
+
+
+class ModelJQueryAutocompleteField(ModelFieldMixin, forms.CharField):
+    def __init__(self, model, multiple=False, new=False, long_widget=False,
+                 *args, **kwargs):
+        self.model = model
+        self.multiple = multiple
+        attrs = {}
+        if long_widget:
+            attrs['cols'] = True
+            attrs['full-width'] = True
+        kwargs['widget'] = JQueryAutoComplete(
+            reverse_lazy('autocomplete-' + self.model.SLUG),
+            associated_model=self.model, new=new, multiple=multiple,
+            attrs=attrs
+        )
+        super(ModelJQueryAutocompleteField, self).__init__(*args, **kwargs)
+
+
 class JQueryAutoComplete(forms.TextInput):
     def __init__(self, source, associated_model=None, options=None, attrs=None,
                  new=False, url_new='', multiple=False, limit=None,
@@ -619,7 +671,7 @@ class JQueryAutoComplete(forms.TextInput):
 
 class JQueryTown(forms.TextInput):
     """
-    Town fields whith state and department pre-selections
+    Town fields with state and department pre-selections
     """
 
     def __init__(self, source, options={},
-- 
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