wagtail-link-field 0.1.4

Flexible link block and field for Wagtail CMS

wagtail-link-field

A flexible link block and field for Wagtail CMS that supports internal pages, external URLs, documents, anchors, email, phone, and custom links.

Features

• LinkBlock: A StreamField block for flexible link selection
• LinkField: A model field that stores link data as JSON
• LinkPanel: A panel for editing LinkField in Wagtail admin
• Template tags: For rendering links in templates
• Dynamic field visibility: JavaScript shows/hides relevant fields based on selected link type
• Clean JSON storage: Only relevant fields are stored, irrelevant ones are stripped

Installation

pip install wagtail-link-field

Add to your INSTALLED_APPS:

INSTALLED_APPS = [
    # ...
    "wagtail_link_field",
    # ...
]

Usage

LinkBlock in StreamField

from wagtail.fields import StreamField
from wagtail import blocks
from wagtail_link_field import LinkBlock

class MyPage(Page):
    body = StreamField([
        ("link", LinkBlock()),
    ], blank=True, use_json_field=True)

    # Restrict to specific link types
    body_restricted = StreamField([
        ("link", LinkBlock(link_types=["internal-link", "external-link"])),
    ], blank=True, use_json_field=True)

LinkField with LinkPanel

from django.db import models
from wagtail_link_field import LinkField, LinkPanel

class MyPage(Page):
    cta = LinkField(blank=True, null=True)

    content_panels = Page.content_panels + [
        LinkPanel("cta"),
        # Or restrict link types:
        LinkPanel("cta_restricted", link_types=["internal-link", "external-link"]),
    ]

Accessing link data in Python

Both LinkBlock values and LinkField values provide the same methods:

# From a LinkField
page = MyPage.objects.first()
link = page.cta  # Returns LinkFieldValue instance

# From a LinkBlock in StreamField
for block in page.body:
    if block.block_type == 'link':
        link = block.value  # Returns LinkValue instance

# Both provide the same methods:
url = link.url()              # Computed URL (e.g., "/about/", "https://example.com", "mailto:[e-mail]")
is_external = link.is_external()  # True for external, email, phone, document, custom links
title = link.title()          # Page/document title if available, otherwise None
safe_title = link.safe_title()    # Formatted title (page title or cleaned URL/email/phone)
action = link.action          # Link type: "internal-link", "external-link", etc.

Using in templates

Load the template tags:

{% load wagtail_link_field_tags %}

Option 1: Use render_link tag (recommended)

Automatically renders a complete <a> tag with proper attributes:

{# Basic usage - uses safe_title automatically #}
{% render_link page.cta %}
{# Output: <a href="/about/">About Us</a> #}

{# With CSS class #}
{% render_link page.cta css_class="btn btn-primary" %}

{# With extra attributes #}
{% render_link page.cta extra_attrs='data-action="click"' %}

{# Works with StreamField blocks too #}
{% for block in page.body %}
    {% if block.block_type == 'link' %}
        {% render_link block.value css_class="content-link" %}
    {% endif %}
{% endfor %}

The render_link tag automatically:

• Adds target="_blank" and rel="noopener noreferrer" for external links
• Uses safe_title() for the link text (page title or formatted URL/email/phone)

Option 2: Use filters for custom markup

{# Get the URL #}
<a href="{{ page.cta|link_url }}">Click here</a>

{# Get page/document title (returns None if not available) #}
<a href="{{ page.cta|link_url }}">
    {{ page.cta|link_title|default:"Read more" }}
</a>

{# Get formatted title (always returns something user-friendly) #}
<a href="{{ page.cta|link_url }}">
    {{ page.cta|link_safe_title }}
</a>

{# Build custom markup #}
{% if page.cta %}
    <a href="{{ page.cta|link_url }}" 
       class="{% if page.cta.is_external %}external-link{% endif %}">
        {{ page.cta|link_safe_title }}
    </a>
{% endif %}

Option 3: Access methods directly

{# Access methods on the value object #}
<a href="{{ page.cta.url }}" 
   {% if page.cta.is_external %}target="_blank" rel="noopener noreferrer"{% endif %}>
    {{ page.cta.safe_title }}
</a>

{# Check link type #}
{% if page.cta.action == "internal-link" %}
    <a href="{{ page.cta.url }}" class="internal">{{ page.cta.title|default:page.cta.safe_title }}</a>
{% elif page.cta.action == "email-link" %}
    <a href="{{ page.cta.url }}" class="email">{{ page.cta.safe_title }}</a>
{% endif %}

When to use each approach:

• {% render_link %}: Quick, automatic rendering with sensible defaults
• Filters (|link_url, |link_safe_title): Custom HTML structure but simpler syntax
• Direct methods (.url, .safe_title): Maximum control and conditional logic

Available link types

Type	Description	Fields
internal-link	Link to a Wagtail page	internal_link, page_query_string
document-link	Link to a Wagtail document	document_link
external-link	External URL	external_link
anchor-link	Same-page anchor	anchor_link
email-link	Email address	url_link (auto-prefixed with mailto:)
phone-link	Phone number	url_link (auto-prefixed with tel:)
custom-link	Custom URL scheme	url_link

Restricting link types

Pass link_types to LinkBlock or LinkPanel:

# Only internal and external links
LinkBlock(link_types=["internal-link", "external-link"])

# Only documents
LinkPanel("download", link_types=["document-link"])

Optional links

Set required=False for optional links:

# LinkBlock (default is required=True)
LinkBlock(required=False)

# LinkField (use blank=True, null=True)
cta = LinkField(blank=True, null=True)

Development

Setup

# Clone the repo
git clone https://github.com/infofactory/wagtail-link-field.git
cd wagtail-link-field

# Install with uv
uv sync --extra testing

Running tests

# Run tests
python testmanage.py test

# Run with coverage
python -m coverage run testmanage.py test
python -m coverage report -m

Running linting

ruff check .
ruff format --check .

Running tox (matrix testing)

tox

License

BSD-3-Clause. See LICENSE for details.