From e50e6712077a7b4911672088838e203db41ffb80 Mon Sep 17 00:00:00 2001
From: Étienne Loks <etienne.loks@proxience.com>
Date: Mon, 26 May 2014 20:54:16 +0200
Subject: Contextual filter on fields for new items window (refs #1715)

---
 ishtar_common/forms_common.py | 31 ++++++++++++++++++++++++++++---
 1 file changed, 28 insertions(+), 3 deletions(-)

(limited to 'ishtar_common/forms_common.py')

diff --git a/ishtar_common/forms_common.py b/ishtar_common/forms_common.py
index 874e2dabf..8964ae57b 100644
--- a/ishtar_common/forms_common.py
+++ b/ishtar_common/forms_common.py
@@ -66,7 +66,29 @@ def get_person_field(label=_(u"Person"), required=True, person_types=[]):
     return forms.IntegerField(widget=widget, label=label, required=required,
                               validators=[models.valid_id(models.Person)])
 
-class OrganizationForm(forms.Form):
+class NewItemForm(forms.Form):
+    def __init__(self, *args, **kwargs):
+        self.limits = {}
+        if 'limits' in kwargs:
+            limits = kwargs.pop('limits')
+            if limits:
+                for item in limits.split(';'):
+                    key, values = item.split('__')
+                    self.limits[key] = values.split('-')
+        super(NewItemForm, self).__init__(*args, **kwargs)
+
+    def limit_fields(self):
+        for key in self.limits:
+            if key in self.fields and hasattr(self.fields[key], 'choices'):
+                new_choices = []
+                for value, lbl in self.fields[key].choices:
+                    if unicode(value) in self.limits[key]:
+                        new_choices.append((value, lbl))
+                self.fields[key].choices = new_choices
+                if len(new_choices) == 1:
+                    self.fields[key].initial = [new_choices[0][0]]
+
+class OrganizationForm(NewItemForm):
     form_label = _(u"Organization")
     associated_models = {'organization_type':models.OrganizationType}
     name = forms.CharField(label=_(u"Name"), max_length=300,
@@ -93,6 +115,7 @@ class OrganizationForm(forms.Form):
                                           models.OrganizationType.get_types()
         self.fields['organization_type'].help_text = \
                                           models.OrganizationType.get_help()
+        self.limit_fields()
 
     def save(self, user):
         dct = self.cleaned_data
@@ -145,7 +168,7 @@ class PersonFormSelection(forms.Form):
                                      PersonSelect, models.Person),
          validators=[models.valid_id(models.Person)])
 
-class SimplePersonForm(forms.Form):
+class SimplePersonForm(NewItemForm):
     form_label = _("Identity")
     associated_models = {'attached_to':models.Organization}
     title = forms.ChoiceField(label=_("Title"), choices=models.Person.TYPE)
@@ -181,6 +204,7 @@ class PersonForm(SimplePersonForm):
         self.fields['person_types'].choices = models.PersonType.get_types(
                                                          empty_first=False)
         self.fields['person_types'].help_text = models.PersonType.get_help()
+        self.limit_fields()
 
     def save(self, user):
         dct = self.cleaned_data
@@ -320,7 +344,7 @@ class SourceDeletionForm(FinalForm):
 # Authors management #
 ######################
 
-class AuthorForm(forms.Form):
+class AuthorForm(NewItemForm):
     form_label = _(u"Author")
     associated_models = {'person':models.Person,
                          'author_type':models.AuthorType}
@@ -333,6 +357,7 @@ class AuthorForm(forms.Form):
     def __init__(self, *args, **kwargs):
         super(AuthorForm, self).__init__(*args, **kwargs)
         self.fields['author_type'].choices = models.AuthorType.get_types()
+        self.limit_fields()
 
     def save(self, user):
         dct = self.cleaned_data
-- 
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