[toolchains][views] Fix handling of description and error

With python 3 we get bytes, ensure we are working on strings.

beat/web/toolchains/views.py

@@ -32,11 +32,13 @@ from django.contrib.auth.decorators import login_required
 from django.conf import settings
 from django.contrib.auth.models import User
 from django.db.models.functions import Coalesce
+from django.utils import six
 
 from .models import Toolchain
 from ..team.models import Team
 from ..reports.models import Report
 from ..common.texts import Messages
+from ..common.utils import ensure_string
 from ..ui.templatetags.markup import restructuredtext
 
 from beat.core import prototypes
@@ -72,7 +74,7 @@ def create(request, name=None):
 
         previous_version = previous_versions[0]
 
-        description = previous_version.description
+        description = ensure_string(previous_version.description)
 
         parameters['toolchain_version'] = previous_version.version + 1
         parameters['declaration']       = previous_version.declaration_string.replace('\n', '')
@@ -103,7 +105,8 @@ def fork(request, author, name, version):
                                 version=int(version)
                                )
 
-    description = fork_of.description
+    description = ensure_string(fork_of.description)
+    errors = ensure_string(fork_of.errors)
 
     parameters = {'toolchain_author':  request.user.username,
                   'toolchain_name':    name,
@@ -112,7 +115,7 @@ def fork(request, author, name, version):
                   'declaration':       fork_of.declaration_string.replace('\n', ''),
                   'short_description': fork_of.short_description,
                   'description':       description.replace('\n', '\\n'),
-                  'errors':            fork_of.errors.replace('\n', '\\n') if fork_of.errors is not None else '',
+                  'errors':            errors.replace('\n', '\\n'),
                   'edition':           False,
                   'messages':          Messages,
                  }
@@ -139,7 +142,8 @@ def edit(request, author, name, version):
                                   version=int(version)
                                  )
 
-    description = toolchain.description
+    description = ensure_string(toolchain.description)
+    errors = ensure_string(toolchain.errors)
 
     # Render the page
     return render(request,
@@ -151,7 +155,7 @@ def edit(request, author, name, version):
                    'short_description': toolchain.short_description,
                    'description':       description.replace('\n', '\\n'),
                    'html_description':  restructuredtext(description).replace('\n', ''),
-                   'errors':            toolchain.errors.replace('\n', '\\n') if toolchain.errors is not None else '',
+                   'errors':            errors.replace('\n', '\\n'),
                    'edition':           True,
                    'messages':          Messages,
                   })