Merge pull request #7 from amleczko/master

pyramid autocomplete renderer

pyramid_formalchemy/__init__.py

@@ -123,6 +123,7 @@ def formalchemy_admin(config, route_name,
                     request_method='GET',
                     permission='new',
                     **kw)
+
     config.add_view(context='pyramid_formalchemy.resources.ModelListing',
                     renderer='pyramid_formalchemy:templates/admin/new.pt',
                     attr='create',
@@ -137,6 +138,7 @@ def formalchemy_admin(config, route_name,
                     request_method='GET',
                     permission='edit',
                     **kw)
+
     config.add_view(context='pyramid_formalchemy.resources.Model',
                     renderer='pyramid_formalchemy:templates/admin/edit.pt',
                     name='edit',
@@ -144,6 +146,7 @@ def formalchemy_admin(config, route_name,
                     request_method='POST',
                     permission='edit',
                     **kw)
+
     config.add_view(context='pyramid_formalchemy.resources.Model',
                     renderer='json',
                     name='',
@@ -159,6 +162,7 @@ def formalchemy_admin(config, route_name,
                     request_method='POST',
                     permission='delete',
                     **kw)
+
     config.add_view(context='pyramid_formalchemy.resources.Model',
                     renderer='pyramid_formalchemy:templates/admin/edit.pt',
                     attr='delete',
@@ -174,3 +178,10 @@ def formalchemy_admin(config, route_name,
                     attr='show',
                     **kw)
 
+    config.add_view(context='pyramid_formalchemy.resources.ModelListing',
+                    attr='autocomplete',
+                    name='autocomplete',
+                    request_method='GET',
+                    permission='view',
+                    **kw)
+

pyramid_formalchemy/renderers.py

@@ -0,0 +1,38 @@
+from formalchemy import fields
+from formalchemy import helpers as h
+from fa.jquery.renderers import jQueryFieldRenderer, alias
+
+
+def PyramidAutocompleteFieldRenderer(filter_by='id', renderer=fields.IntegerFieldRenderer, **jq_options):
+    """Use http://docs.jquery.com/UI/Autocomplete with pyramid"""
+
+    class Renderer(renderer):
+
+        def __init__(self, *args, **kwargs):
+            super(Renderer, self).__init__(*args, **kwargs)
+            self.field.render_opts['options'] = []
+
+        def update_options(self, options, kwargs):
+            autocomplete_model = self.field.relation_type().__name__
+            route_url = self.request.route_url(self.request.route_name,
+                                               traverse=(autocomplete_model,'autocomplete'))
+            kwargs['source'] = route_url
+
+        def render(self, **kwargs):
+            filter_by = self.jq_options.get('filter_by')
+            if self.raw_value:
+                label = getattr(self.raw_value, filter_by, u'Not selected')
+            else:
+                label = u''
+
+            html = h.radio_button(self.name, value=self.value, **kwargs)
+            html += h.label(label)
+
+            return ''.join(html)
+
+    jq_options.update(filter_by=filter_by, show_input=False)
+
+    return jQueryFieldRenderer('pyramidautocomplete', renderer=Renderer, **jq_options)
+
+@alias(PyramidAutocompleteFieldRenderer)
+def pyramid_autocomplete(): pass

pyramid_formalchemy/views.py

@@ -395,3 +395,12 @@ class ModelView(object):
             return exc.HTTPFound(location=request.fa_url(request.model_name))
         return self.render(id=request.model_id)
 
+    def autocomplete(self, *args, **kwargs):
+        filter_term = "%s%%" % self.request.params.get('term')
+        filter_attr = getattr(self.request.model_class, self.request.params.get('filter_by'))
+        query = self.session.query(self.request.model_class.id, filter_attr).filter(filter_attr.ilike(filter_term))
+        items = self.request.query_factory(self.request, query)
+        return Response(json.dumps([{'label' : x[1],
+                                     'value' : x[0]} for x in items ]),
+                        content_type='text/plain')
+