djblets.features.templatetags.features¶

Template tags for working with features.

class IfFeatureNode(nodelist_enabled: NodeList, nodelist_disabled: NodeList, feature_id: FilterExpression, extra_kwargs: Dict)[source]¶

Bases: Node

Template node for feature-based if statements.

This works mostly like a standard {% if %} tag, checking whether the given feature is enabled and rendering the content between it and the else/end tags only if matching the desired state.

This supports a {% else %}, to allow rendering content if the feature does not match the desired state.

This is used by both the {% if_feature_enabled %} and {% if_feature_disabled %} tags.

child_nodelists = ('nodelist_true', 'nodelist_false')[source]¶

__init__(nodelist_enabled: NodeList, nodelist_disabled: NodeList, feature_id: FilterExpression, extra_kwargs: Dict) → None[source]¶

Initialize the template node.

Parameters:

• nodelist_enabled (django.template.NodeList) – The nodelist to render if the feature is enabled.

• nodelist_disabled (django.template.NodeList) – The nodelist to render if the feature is disabled.

• feature_id (django.template.FilterExpression) – The template filter expression containing the ID of the feature to check.

• extra_kwargs (dict) – Extra keyword arguments to pass to Feature.is_enabled().

__repr__() → str[source]¶

Return a representation of the node.

This is mostly used for debugging output.

Returns:

A representation of this node.

Return type:

str

render(context: Context) → str[source]¶

Render the node.

This will determine if the feature is enabled or disabled, and render the appropriate list of nodes to a string.

Parameters:

context (django.template.Context) – The context provided by the template.

Returns:

The rendered content as a string.

Return type:

unicode

__annotations__ = {}¶

if_feature_enabled(parser: Parser, token: Token) → IfFeatureNode[source]¶

Render content only if a feature is enabled.

This works mostly like a standard {% if %} tag, checking if the given feature is enabled before rendering the content between it and the else or end tags.

This supports a {% else %}, to allow rendering alternative content if the feature is disabled instead.

It also accepts additional keyword arguments that can be passed to Feature.is_enabled().

Parameters:

• parser (django.template.Parser) – The parser being used to parse this template tag.

• token (django.template.Token) – The token representing this template tag.

Returns:

The feature checker node to use for the template.

Return type:

IfFeatureNode

Example

{% if_feature_enabled "my-feature" user=request.user %}
This will only render if the feature is enabled for the user.
{% else %}
This will only render if the feature is disabled for the user.
{% endif_feature_enabled %}

if_feature_disabled(parser: Parser, token: Token) → IfFeatureNode[source]¶

Render content only if a feature is disabled.

This works mostly like a standard {% if %} tag, checking if the given feature is disabled before rendering the content between it and the else or end tags.

This supports a {% else %}, to allow rendering alternative content if the feature is enabled instead.

It also accepts additional keyword arguments that can be passed to Feature.is_enabled().

Parameters:

• parser (django.template.Parser) – The parser being used to parse this template tag.

• token (django.template.Token) – The token representing this template tag.

Returns:

The feature checker node to use for the template.

Return type:

IfFeatureNode

Example

{% if_feature_disabled "my-feature" user=request.user %}
This will only render if the feature is disabled for the user.
{% else %}
This will only render if the feature is enabled for the user.
{% endif_feature_disabled %}