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feat: add Chart.js and Flatpickr with CDN fallback strategy

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Add optional libraries with local fallback for offline development:

Vendor files added:
- static/shared/js/vendor/chart.umd.min.js (Chart.js 4.4.1)
- static/shared/js/vendor/flatpickr.min.js (Flatpickr 4.6.13)
- static/shared/css/vendor/flatpickr.min.css

Template updates:
- admin/base.html: Add optional blocks for chartjs_script, flatpickr_script, flatpickr_css
- shared/includes/optional-libs.html: CDN fallback loaders for both libraries

Usage in page templates:
  {% block flatpickr_css %}
    {% from 'shared/includes/optional-libs.html' import flatpickr_css_loader %}
    {{ flatpickr_css_loader() }}
  {% endblock %}

  {% block chartjs_script %}
    {% from 'shared/includes/optional-libs.html' import chartjs_loader %}
    {{ chartjs_loader() }}
  {% endblock %}

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Samir Boulahtit
2025-12-06 19:09:06 +01:00
parent b0db4d26d8
commit ffa15aee2b
5 changed files with 150 additions and 1 deletions
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11
app/templates/admin/base.html
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@@ -18,6 +18,9 @@
[x-cloak] { display: none !important; }
</style>
<!-- Flatpickr CSS with CDN fallback (loaded on demand via block) -->
{% block flatpickr_css %}{% endblock %}
{% block extra_head %}{% endblock %}
</head>
<body x-cloak>
@@ -74,7 +77,13 @@
})();
</script>
<!-- 7. LAST: Page-specific scripts -->
<!-- 7. OPTIONAL: Chart.js with CDN fallback (loaded on demand via block) -->
{% block chartjs_script %}{% endblock %}
<!-- 8. OPTIONAL: Flatpickr with CDN fallback (loaded on demand via block) -->
{% block flatpickr_script %}{% endblock %}
<!-- 9. LAST: Page-specific scripts -->
{% block extra_scripts %}{% endblock %}
</body>
</html>

105
app/templates/shared/includes/optional-libs.html Normal file
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@@ -0,0 +1,105 @@
{#
Optional Libraries with CDN Fallback
=====================================
Include these blocks in pages that need Chart.js or Flatpickr.
Usage in a page template:
{% extends "admin/base.html" %}
{# For Flatpickr CSS (in head) #}
{% block flatpickr_css %}
{% include 'shared/includes/optional-libs.html' with context %}
{{ flatpickr_css_loader() }}
{% endblock %}
{# For Chart.js #}
{% block chartjs_script %}
{% include 'shared/includes/optional-libs.html' with context %}
{{ chartjs_loader() }}
{% endblock %}
{# For Flatpickr JS #}
{% block flatpickr_script %}
{% include 'shared/includes/optional-libs.html' with context %}
{{ flatpickr_loader() }}
{% endblock %}
#}
{#
Chart.js Loader with CDN Fallback
=================================
Loads Chart.js from CDN, falls back to local copy if CDN fails.
#}
{% macro chartjs_loader() %}
<script>
(function() {
var script = document.createElement('script');
script.src = 'https://cdn.jsdelivr.net/npm/chart.js@4.4.1/dist/chart.umd.min.js';
script.onerror = function() {
console.warn('Chart.js CDN failed, loading local copy...');
var fallbackScript = document.createElement('script');
fallbackScript.src = '{{ url_for("static", path="shared/js/vendor/chart.umd.min.js") }}';
document.head.appendChild(fallbackScript);
};
document.head.appendChild(script);
})();
</script>
{% endmacro %}
{#
Flatpickr CSS Loader with CDN Fallback
======================================
Loads Flatpickr CSS from CDN, falls back to local copy if CDN fails.
#}
{% macro flatpickr_css_loader() %}
<link
rel="stylesheet"
href="https://cdn.jsdelivr.net/npm/flatpickr@4.6.13/dist/flatpickr.min.css"
onerror="this.onerror=null; this.href='{{ url_for('static', path='shared/css/vendor/flatpickr.min.css') }}';"
/>
{% endmacro %}
{#
Flatpickr JS Loader with CDN Fallback
=====================================
Loads Flatpickr JS from CDN, falls back to local copy if CDN fails.
#}
{% macro flatpickr_loader() %}
<script>
(function() {
var script = document.createElement('script');
script.src = 'https://cdn.jsdelivr.net/npm/flatpickr@4.6.13/dist/flatpickr.min.js';
script.onerror = function() {
console.warn('Flatpickr CDN failed, loading local copy...');
var fallbackScript = document.createElement('script');
fallbackScript.src = '{{ url_for("static", path="shared/js/vendor/flatpickr.min.js") }}';
document.head.appendChild(fallbackScript);
};
document.head.appendChild(script);
})();
</script>
{% endmacro %}
{#
Combined Loaders
================
Convenience macros to load multiple libraries at once.
#}
{# Load Chart.js + Flatpickr together #}
{% macro all_optional_libs_css() %}
{{ flatpickr_css_loader() }}
{% endmacro %}
{% macro all_optional_libs_js() %}
{{ chartjs_loader() }}
{{ flatpickr_loader() }}
{% endmacro %}

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static/shared/js/vendor/flatpickr.min.js vendored Normal file
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