Refat. leitura de yaml's para internacionalização

- As leituras dos arquivos subnav.yaml e layouts.yaml foram
  refatoradas para suportar internacionalização.
- Falta fazer neste branch:
  - Mover todos os arquivos [app_label]/layouts.yaml para
    templates/[app_label]/layouts.yaml
  - aplicar a tag {% load i18n %} no início de todo arquivo layouts.yaml
  - aplicar a tag {% trans '' %} em todo texto a ser internacionalizado
  - DICA: deixe os ":" (dois pontos) de fora da tag trans.

sapl/base/templatetags/menus.py

@@ -43,7 +43,8 @@ def subnav(context, path=None):
                 A função nativa abaixo busca em todos os Loaders Configurados.
             """
             yaml_template = template.loader.get_template(yaml_path)
-            menu = yaml.load(open(yaml_template.origin.name, 'r'))
+            rendered = yaml_template.render()
+            menu = yaml.load(rendered)
             resolve_urls_inplace(menu, root_pk, app, context)
         except:
             pass

sapl/crispy_layout_mixin.py

@@ -1,12 +1,13 @@
 from math import ceil
 from os.path import dirname, join
 
-import rtyaml
 from crispy_forms.bootstrap import FormActions
 from crispy_forms.helper import FormHelper
 from crispy_forms.layout import HTML, Div, Fieldset, Layout, Submit
+from django import template
 from django.utils import formats
 from django.utils.translation import ugettext as _
+import rtyaml
 
 
 def heads_and_tails(list_of_lists):
@@ -70,8 +71,8 @@ def get_field_display(obj, fieldname):
     elif 'FieldFile' in str(type(value)):
         if value:
             display = '<a href="{}">{}</a>'.format(
-                                                value.url,
-                                                value.name.split('/')[-1:][0])
+                value.url,
+                value.name.split('/')[-1:][0])
         else:
             display = ''
     else:
@@ -89,10 +90,8 @@ class CrispyLayoutFormMixin:
             return self.model.__name__
 
     def get_layout(self):
-        filename = join(
-            dirname(self.model._meta.app_config.models_module.__file__),
-            'layouts.yaml')
-        return read_layout_from_yaml(filename, self.layout_key)
+        yaml_layout = '%s/layouts.yaml' % self.model._meta.app_config.label
+        return read_layout_from_yaml(yaml_layout, self.layout_key)
 
     @property
     def fields(self):
@@ -146,15 +145,17 @@ class CrispyLayoutFormMixin:
              } for legend, rows in heads_and_tails(self.get_layout())]
 
 
-def read_yaml_from_file(filename):
+def read_yaml_from_file(yaml_layout):
+
     # TODO cache this at application level
-    with open(filename, 'r') as yamlfile:
-        return rtyaml.load(yamlfile)
+    t = template.loader.get_template(yaml_layout)
+    rendered = t.render()
+    return rtyaml.load(rendered)
 
 
-def read_layout_from_yaml(filename, key):
+def read_layout_from_yaml(yaml_layout, key):
     # TODO cache this at application level
-    yaml = read_yaml_from_file(filename)
+    yaml = read_yaml_from_file(yaml_layout)
     base = yaml[key]
 
     def line_to_namespans(line):

sapl/parlamentares/layouts.yaml → sapl/templates/parlamentares/layouts.yaml

@@ -1,6 +1,6 @@
-
+{% load i18n %}
 CargoMesa:
-  Cargo na Mesa:
+  {% trans 'Cargo na Mesa'%}:
   - descricao:10  unico
 
 Legislatura:

sapl/templates/parlamentares/subnav.yaml

@@ -1,4 +1,5 @@
-- title: Início
+{% load i18n %}
+- title: {% trans 'Início' %}
   url: parlamentar_detail
 - title: Mandatos
   url: mandato_list
@@ -6,4 +7,3 @@
   url: filiacao_list
 - title: Dependentes
   url: dependente_list
-