django-orchestra/orchestra/contrib/settings/admin.py

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from django.contrib import admin, messages
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from django.shortcuts import render_to_response
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from django.views import generic
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from django.utils.translation import ngettext, ugettext_lazy as _
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from orchestra.contrib.settings import Setting
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from orchestra.utils import sys
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from . import parser
from .forms import SettingFormSet
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class SettingView(generic.edit.FormView):
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template_name = 'admin/settings/change_form.html'
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reload_template_name = 'admin/settings/reload.html'
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form_class = SettingFormSet
success_url = '.'
def get_context_data(self, **kwargs):
context = super(SettingView, self).get_context_data(**kwargs)
context.update({
'title': _("Change settings"),
'settings_file': parser.get_settings_file(),
})
return context
def get_initial(self):
initial_data = []
prev_app = None
account = 0
for name, setting in Setting.settings.items():
app = name.split('_')[0]
initial = {
'name': setting.name,
'help_text': setting.help_text,
'default': setting.default,
'type': type(setting.default),
'value': setting.value,
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'setting': setting,
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'app': app,
}
if app == 'ORCHESTRA':
initial_data.insert(account, initial)
account += 1
else:
initial_data.append(initial)
return initial_data
def form_valid(self, form):
settings = Setting.settings
changes = {}
for data in form.cleaned_data:
setting = settings[data['name']]
if not isinstance(data['value'], parser.NotSupported) and setting.editable:
if setting.value != data['value']:
if setting.default == data['value']:
changes[setting.name] = parser.Remove()
else:
changes[setting.name] = parser.serialize(data['value'])
if changes:
# Display confirmation
if not self.request.POST.get('confirmation'):
settings_file = parser.get_settings_file()
new_content = parser.apply(changes)
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cmd = "cat <<EOF | diff %s -\n%s\nEOF" % (settings_file, new_content)
diff = sys.run(cmd, valid_codes=(1, 0)).stdout
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context = self.get_context_data(form=form)
context['diff'] = diff
return self.render_to_response(context)
# Save changes
parser.save(changes)
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sys.touch_wsgi()
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n = len(changes)
context = {
'message': ngettext(
_("One change successfully applied, orchestra is being restarted."),
_("%s changes successfully applied, orchestra is being restarted.") % n,
n),
}
return render_to_response(self.reload_template_name, context)
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else:
messages.success(self.request, _("No changes have been detected."))
return super(SettingView, self).form_valid(form)
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class SettingFileView(generic.TemplateView):
template_name = 'admin/settings/view.html'
def get_context_data(self, **kwargs):
context = super(SettingFileView, self).get_context_data(**kwargs)
settings_file = parser.get_settings_file()
with open(settings_file, 'r') as handler:
content = handler.read()
context.update({
'title': _("Settings file content"),
'settings_file': settings_file,
'content': content,
})
return context
admin.site.register_url(r'^settings/setting/view/$', SettingFileView.as_view(), 'settings_setting_view')
admin.site.register_url(r'^settings/setting/$', SettingView.as_view(), 'settings_setting_change')