def render(self, name, value=None, attrs=None):
"""
The widget consists of two text fields:
1. Field with id = "id_<field_name>_text", which holds the text values
2. Field with id = "id_<field_name>", which is hidden and holds the pk
of a selected item.
"""
text_field_attrs = self.build_attrs(attrs, name=name + "_text")
# if there is any initial value available, fill the text field from the queryset
text_field_value = ""
if value:
func = get_installed("%(app)s.ajax.%(func)s" % {
'app': self.app,
'func': self.qs_function,
})
queryset = func("all")
try:
obj = queryset.get(pk=value)
text_field_value = getattr(obj, self.display_attr)
if callable(text_field_value) and not getattr(text_field_value, "alters_data", False):
text_field_value = text_field_value()
except:
pass
text_field_attrs['value'] = text_field_value
text_field_attrs['class'] = "autocomplete textinput textInput form-control"
if not self.attrs.has_key('id'):
text_field_attrs['id'] = 'id_%s_text' % name
# hidden field for key value
hidden_field_attrs = {
'id' : 'id_%s' % name,
'name' : '%s' % name,
'value' : value or "",
'class' : "form_hidden",
}
return mark_safe(
u"""
<input type="text" %(text_field_attrs)s/>
<input type="hidden" %(hidden_field_attrs)s />
<script type="text/javascript">
/* <![CDATA[ */
%(js)s
/* ]]> */
</script>""" % {
'text_field_attrs' : flatatt(text_field_attrs),
'js' : self.render_js(
hidden_field_attrs['id'],
text_field_attrs['id'],
text_field_value,
),
'hidden_field_attrs' : flatatt(hidden_field_attrs),
}
)
def to_python(self, value):
func = get_installed("%(app)s.ajax.%(func)s" % {
'app': self.app,
'func': self.qs_function,
})
if value:
try:
value = func("all").filter(pk__in=value.split(","))
except:
raise forms.ValidationError(self.error_messages['invalid'])
else:
value = func("all").none()
return value
def __init__(self, app, qs_function, display_attr, add_display_attr=None, options=None, attrs=None, *args,
**kwargs):
if not attrs:
attrs = {}
if not options:
options = {}
self.app = app
self.qs_function = qs_function
self.func = get_installed("%(app)s.ajax.%(func)s" % {
'app': self.app,
'func': self.qs_function,
})
self.queryset = self.func("all")
self.widget = SelectToAutocompleteWidget(
app, qs_function, display_attr,
add_display_attr, options, attrs)
forms.CharField.__init__(self, *args, **kwargs)
def ajax_autocomplete(request, app, qs_function, display_attr, add_display_attr=None, limit=1000):
"""
Method to lookup a model field and return an array. Intended for use
in AJAX widgets.
"""
obj_list = []
t = Template("")
if "q" in request.GET:
search = request.GET["q"]
func = get_installed("%(app)s.ajax.%(func)s" % {"app": app, "func": qs_function})
queryset = func(search)
if add_display_attr == u"None":
add_display_attr = None
for obj in queryset[:limit]:
display = getattr(obj, display_attr)
if callable(display) and not getattr(display, "alters_data", False):
display = display()
if add_display_attr:
add_display = getattr(obj, add_display_attr)
if callable(add_display) and not getattr(add_display, "alters_data", False):
add_display = add_display()
obj_list.append([display, obj.pk, add_display])
else:
obj_list.append([display, obj.pk])
if add_display_attr:
t = Template(
"{% autoescape off %}{% for el in obj_list %}{{ el.0 }}|{{ el.1 }}|{{ el.2 }}\n{% endfor %}{% endautoescape %}"
)
else:
t = Template(
"{% autoescape off %}{% for el in obj_list %}{{ el.0 }}|{{ el.1 }}\n{% endfor %}{% endautoescape %}"
)
c = Context({"obj_list": obj_list})
r = HttpResponse(t.render(c))
r["Content-Type"] = "text/plain; charset=UTF-8"
return r
def __init__(self, app, qs_function, display_attr, add_display_attr=None, options=None, attrs=None):
super(SelectToAutocompleteWidget, self).__init__(app, qs_function, display_attr)
if not attrs:
attrs = {}
if not options:
options = {}
self.app = app
self.qs_function = qs_function
self.display_attr = display_attr
self.add_display_attr = add_display_attr
self.options = options
self.attrs = attrs
self.func = get_installed("%(app)s.ajax.%(func)s" % {
'app': self.app,
'func': self.qs_function,
})
self.queryset = self.func("all")
#self.choices = list(XChoiceList(self.queryset))
self.choices = XChoiceList(self.queryset)
def render(self, name, value=None, attrs=None):
"""
The widget consists of two text fields:
1. Field with id = "id_<field_name>_text", which is used for entering text values
2. Field with id = "id_<field_name>", which is hidden and holds
comma-separated pks of selected items
3. List of selected text values with id = "id_<field_name>_value_pk-<pk>"
"""
text_field_attrs = self.build_attrs(attrs, name=name + "_text")
value = value or []
# if there is any initial value available, fill the text field from the queryset
value_list = []
if value:
func = get_installed("%(app)s.ajax.%(func)s" % {
'app': self.app,
'func': self.qs_function,
})
queryset = func("all")
for obj in queryset.filter(pk__in=value):
text_value = getattr(obj, self.display_attr)
if callable(text_value) and not getattr(text_value, "alters_data", False):
text_value = text_value()
value_list.append(
"""<li id="id_%(name)s_value_pk-%(pk)s">
<span>%(text_value)s</span>
</li>""" % {
'name': name,
'pk': obj.pk,
'text_value': force_unicode(text_value),
})
html_value_list = ""
if value_list:
html_value_list = """<ul id="id_%(name)s_value_list" class="ac_value_list">
%(value_list)s
</ul>""" % {
'name': name,
'value_list': "".join(value_list),
}
text_field_attrs['value'] = ""
text_field_attrs['class'] = "autocomplete textinput textInput"
if not self.attrs.has_key('id'):
text_field_attrs['id'] = 'id_%s_text' % name
# hidden field for key value
hidden_field_attrs = {
'id' : 'id_%s' % name,
'name' : '%s' % name,
'value' : ",".join([force_unicode(pk) for pk in value]),
'class' : "form_hidden",
}
return mark_safe(
u"""
<input type="hidden" %(hidden_field_attrs)s />
%(html_value_list)s
<input type="text" %(text_field_attrs)s/>
<script type="text/javascript">
/* <![CDATA[ */
%(js)s
/* ]]> */
</script>""" % {
'text_field_attrs' : flatatt(text_field_attrs),
'js' : self.render_js(
hidden_field_attrs['id'],
text_field_attrs['id'],
"",
),
'hidden_field_attrs': flatatt(hidden_field_attrs),
'html_value_list': html_value_list
}
)