Python models.MapFeature类代码示例

 def make_display_filter(feature_name):
     Feature = MapFeature.get_subclass(feature_name)
     if hasattr(Feature, "display_name_plural"):
         plural = Feature.display_name_plural
     else:
         plural = Feature.display_name + "s"
     return {"label": "Show %s" % plural.lower(), "model": feature_name}

    def add_map_feature_types(self, types):
        """
        add_map_feature_types(self, types)

        types is a list of map feature class names.

        Add these types to the instance config,
        save the instance!!!,
        and create udf rows for udfs that have settings defaults,
        if they don't already exist.
        """
        from treemap.models import MapFeature  # prevent circular import
        from treemap.audit import add_default_permissions

        classes = [MapFeature.get_subclass(type) for type in types]

        dups = set(types) & set(self.map_feature_types)
        if len(dups) > 0:
            raise ValidationError('Map feature types already added: %s' % dups)

        self._map_feature_types = list(self.map_feature_types) + list(types)
        self.save()

        for type, clz in zip(types, classes):
            settings = (getattr(clz, 'udf_settings', {}))
            for udfc_name, udfc_settings in settings.items():
                if udfc_settings.get('defaults'):
                    get_or_create_udf(self, type, udfc_name)

        add_default_permissions(self, models=classes)

def render_map_feature_add(request, instance, type):
    if type in instance.map_feature_types[1:]:
        app = MapFeature.get_subclass(type).__module__.split(".")[0]
        template = "%s/%s_add.html" % (app, type)
        return render_to_response(template, None, RequestContext(request))
    else:
        raise Http404("Instance does not support feature type " + type)

 def make_display_filter(feature_name):
     Feature = MapFeature.get_subclass(feature_name)
     plural = Feature.terminology(self)['plural']
     return {
         'label': 'Show %s' % plural.lower(),
         'model': feature_name
     }

def get_map_view_context(request, instance):
    resource_classes = [MapFeature.get_subclass(type)
                        for type in instance.map_feature_types]
    return {
        'fields_for_add_tree': [
            (trans('Tree Height'), 'Tree.height')
        ],
        'resource_classes': resource_classes[1:]
    }

def _get_map_view_context(request, instance):
    resource_types = [{'name': type,
                       'display': MapFeature.get_subclass(type).display_name}
                      for type in instance.map_feature_types]
    return {
        'fields_for_add_tree': [
            (trans('Tree Height'), 'Tree.height')
        ],
        'resource_types': resource_types[1:]
    }

 def make_display_filter(feature_name):
     Feature = MapFeature.get_subclass(feature_name)
     if hasattr(Feature, 'display_name_plural'):
         plural = Feature.display_name_plural
     else:
         plural = Feature.display_name + 's'
     return {
         'label': 'Show %s' % plural.lower(),
         'model': feature_name
     }

def any_resource_is_creatable(role_related_obj):
    role = _get_role_from_related_object(role_related_obj)
    if role is None:
        return False

    map_features = {MapFeature.get_subclass(m)
                    for m in role.instance.map_feature_types}
    resources = map_features - {Plot}

    return any(map_feature_is_creatable(role, Model) for Model in resources)

def render_map_feature_add(request, instance, type):
    if type in instance.map_feature_types[1:]:
        app = MapFeature.get_subclass(type).__module__.split('.')[0]
        try:
            template = '%s/%s_add.html' % (app, type)
        except:
            template = 'treemap/resource_add.html'
        return render(request, template, {'object_name': to_object_name(type)})
    else:
        raise_non_instance_404(type)

def render_map_feature_add(request, instance, type):
    if type in instance.map_feature_types[1:]:
        app = MapFeature.get_subclass(type).__module__.split(".")[0]
        try:
            template = "%s/%s_add.html" % (app, type)
            get_template(template)
        except:
            template = "treemap/resource_add.html"
        return render_to_response(template, {"object_name": to_object_name(type)}, RequestContext(request))
    else:
        raise_non_instance_404(type)

def get_map_view_context(request, instance):
    resource_classes = [MapFeature.get_subclass(type)
                        for type in instance.map_feature_types]
    context = {
        'fields_for_add_tree': [
            (_('Tree Height'), 'Tree.height')
        ],
        'resource_classes': resource_classes[1:],
    }
    add_map_info_to_context(context, instance)
    return context

def get_map_feature_or_404(feature_id, instance, type=None):
    if type:
        MapFeatureSubclass = MapFeature.get_subclass(type)
        InstanceMapFeature = instance.scope_model(MapFeatureSubclass)
        return get_object_or_404(InstanceMapFeature, pk=feature_id)

    else:
        InstanceMapFeature = instance.scope_model(MapFeature)
        feature = get_object_or_404(InstanceMapFeature, pk=feature_id)

        # Return the concrete subtype (e.g. Plot), not a general MapFeature
        return feature.cast_to_subtype()

def render_map_feature_add(request, instance, type):
    if type in instance.map_feature_types[1:]:
        app = MapFeature.get_subclass(type).__module__.split('.')[0]
        try:
            template = '%s/%s_add.html' % (app, type)
            get_template(template)
        except:
            template = 'treemap/resource_add.html'
        return render_to_response(template,
                                  {'object_name': to_object_name(type)},
                                  RequestContext(request))
    else:
        raise Http404('Instance does not support feature type ' + type)

def get_map_feature_or_404(feature_id, instance, type=None):
    if type:
        MapFeatureSubclass = MapFeature.get_subclass(type)
        InstanceMapFeature = instance.scope_model(MapFeatureSubclass)
        return get_object_or_404(InstanceMapFeature, pk=feature_id)

    else:
        InstanceMapFeature = instance.scope_model(MapFeature)
        feature = get_object_or_404(InstanceMapFeature, pk=feature_id)

        # Use feature_type to get the appropriate object, e.g. feature.plot
        feature = getattr(feature, feature.feature_type.lower())
        return feature

def safe_get_model_class(model_string):
    """
    In a couple of cases we want to be able to convert a string
    into a valid django model class. For instance, if we have
    'Plot' we want to get the actual class for 'treemap.models.Plot'
    in a safe way.

    This function returns the class represented by the given model
    if it exists in 'treemap.models'
    """
    from treemap.models import MapFeature

    # All of our models live in 'treemap.models', so
    # we can start with that namespace
    models_module = __import__('treemap.models')

    if hasattr(models_module.models, model_string):
        return getattr(models_module.models, model_string)
    elif MapFeature.has_subclass(model_string):
        return MapFeature.get_subclass(model_string)
    else:
        raise ValidationError(trans('invalid model type'))