From 1878345992d0272c146cbeec2e62f3ed24907f1e Mon Sep 17 00:00:00 2001
From: Étienne Loks <etienne.loks@iggdrasil.net>
Date: Tue, 2 Nov 2021 18:19:03 +0100
Subject: JSON types: multi valued choices

---
 ishtar_common/widgets.py | 45 ++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 40 insertions(+), 5 deletions(-)

(limited to 'ishtar_common/widgets.py')

diff --git a/ishtar_common/widgets.py b/ishtar_common/widgets.py
index b80faee6d..efea07065 100644
--- a/ishtar_common/widgets.py
+++ b/ishtar_common/widgets.py
@@ -126,16 +126,23 @@ class Select2Media(object):
         return media
 
 
-class Select2Dynamic(Select2Media, forms.Select):
+class Select2DynamicBase(Select2Media):
     """
     Select input using select, allowing dynamic creation.
     """
+    MULTIPLE = False
 
     def render(self, name, value, attrs=None, choices=()):
         choices = choices or getattr(self, "choices", [])
-        if value and value not in [key for key, v in choices]:
-            choices.insert(1, (value, value))
-            self.choices = choices
+        if value:
+            values = [value]
+            if self.MULTIPLE:
+                value = value[0]
+                values = value
+            for va in values:
+                if va not in [key for key, va in choices]:
+                    choices.insert(1, (va, va))
+                    self.choices = choices
         klass = attrs and attrs.get("class") or ""
         klass += " " if klass else "" + "js-select2"
         if not attrs:
@@ -161,7 +168,9 @@ class Select2Dynamic(Select2Media, forms.Select):
         if attrs.get("full-width", None):
             options.append("containerCssClass: 'full-width'")
 
-        html = super(Select2Dynamic, self).render(name, value, attrs)
+        if self.MULTIPLE:
+            options.append("multiple: 'true'")
+        html = super(Select2DynamicBase, self).render(name, value, attrs)
         html += """<script type="text/javascript">
         $(document).ready(function() {{
             $("#id_{}").select2({{ {} }});
@@ -172,6 +181,14 @@ class Select2Dynamic(Select2Media, forms.Select):
         return mark_safe(html)
 
 
+class Select2Dynamic(Select2DynamicBase, forms.Select):
+    MULTIPLE = False
+
+
+class Select2DynamicMultiple(Select2DynamicBase, forms.SelectMultiple):
+    MULTIPLE = True
+
+
 class Select2DynamicField(forms.ChoiceField):
     widget = Select2Dynamic
 
@@ -190,6 +207,24 @@ class Select2DynamicField(forms.ChoiceField):
         return super(Select2DynamicField, self).to_python(value).strip()
 
 
+class Select2DynamicMultipleField(forms.MultipleChoiceField):
+    widget = Select2DynamicMultiple
+
+    def validate(self, value):
+        """
+        Key can be added dynamically. Only check that the character " is not
+        used.
+        """
+        if value and '"' in value:
+            raise ValidationError(_('The character " is not accepted.'))
+
+    def to_python(self, value):
+        """
+        Strip value
+        """
+        return [v.strip() for v in super().to_python(value)]
+
+
 class Select2Base(Select2Media):
     def __init__(
         self, attrs=None, choices=(), remote=None, model=None, new=None, available=None
-- 
cgit v1.2.3