add support for svg images in library

hub/services/admin/images.py

@@ -72,6 +72,8 @@ class ImageLibraryAdmin(admin.ModelAdmin):
         Display small thumbnail in list view.
         """
         if obj.image:
+            # Use img tag for all images in list view to maintain clickability
+            # SVG files will still display correctly with img tag
             return format_html(
                 '<img src="{}" width="50" height="50" style="object-fit: cover; border-radius: 4px;" />',
                 obj.image.url,
@@ -85,6 +87,19 @@ class ImageLibraryAdmin(admin.ModelAdmin):
         Display larger preview in detail view.
         """
         if obj.image:
+            if obj.is_svg():
+                # For SVG files in detail view, use object tag for better rendering
+                # This is only for display, not for clickable elements
+                return format_html(
+                    '<div style="pointer-events: none;">'
+                    '<object data="{}" type="image/svg+xml" style="max-width: 300px; max-height: 300px; border-radius: 4px; background: #f5f5f5;">'
+                    '<img src="{}" style="max-width: 300px; max-height: 300px; border-radius: 4px;" />'
+                    "</object>"
+                    "</div>",
+                    obj.image.url,
+                    obj.image.url,
+                )
+            else:
                 return format_html(
                     '<img src="{}" style="max-width: 300px; max-height: 300px; border-radius: 4px;" />',
                     obj.image.url,

hub/services/admin/widgets.py

@@ -59,11 +59,17 @@ class ImageLibraryWidget(forms.Select):
             selected = "selected" if str(image.pk) == str(value) else ""
             image_url = image.image.url if image.image else ""
 
+            # Use img tag for all images in widget to maintain clickability
+            # SVG files will still display correctly with img tag
+            preview_html = (
+                f'<img src="{image_url}" alt="{image.alt_text}" loading="lazy">'
+            )
+
             html_parts.append(
                 f"""
                 <div class="image-option {selected}" data-value="{image.pk}">
                     <div class="image-preview">
-                        <img src="{image_url}" alt="{image.alt_text}" loading="lazy">
+                        {preview_html}
                     </div>
                     <div class="image-info">
                         <span class="image-name">{image.name}</span>

hub/services/forms/image_library.py

@@ -40,6 +40,8 @@ class ImageLibraryWidget(forms.Select):
         for image in images:
             thumbnail_html = ""
             if self.show_thumbnails and image.image:
+                # Use img tag for all images in dropdowns to maintain functionality
+                # SVG files will still display correctly with img tag
                 thumbnail_html = format_html(
                     ' <img src="{}" style="width: 20px; height: 20px; object-fit: cover; margin-left: 5px; vertical-align: middle;" />',
                     image.image.url,
@@ -64,16 +66,21 @@ class ImageLibraryWidget(forms.Select):
         if value:
             try:
                 image = ImageLibrary.objects.get(pk=value)
+
+                # Use img tag for all images in preview for consistency
+                # Add SVG indicator in the text if it's an SVG file
+                svg_indicator = " (SVG)" if image.is_svg() else ""
                 preview_html = format_html(
                     '<div class="image-preview" style="margin-top: 10px;">'
                     '<img src="{}" style="max-width: 200px; max-height: 200px; border: 1px solid #ddd; border-radius: 4px;" />'
-                    '<p style="margin-top: 5px; font-size: 12px; color: #666;">{} - {}x{} - {}</p>'
+                    '<p style="margin-top: 5px; font-size: 12px; color: #666;">{} - {}x{} - {}{}</p>'
                     "</div>",
                     image.image.url,
                     image.name,
                     image.width or "?",
                     image.height or "?",
                     image.get_file_size_display(),
+                    svg_indicator,
                 )
             except ImageLibrary.DoesNotExist:
                 pass

hub/services/models/base.py

@@ -2,6 +2,8 @@ from django.db import models
 from django.core.exceptions import ValidationError
 from django.utils.text import slugify
 from django_prose_editor.fields import ProseEditorField
+import mimetypes
+import xml.etree.ElementTree as ET
 
 
 def validate_image_size(value, mb=1):
@@ -10,6 +12,49 @@ def validate_image_size(value, mb=1):
         raise ValidationError(f"Maximum file size is {mb} MB")
 
 
+def validate_image_or_svg(value):
+    """
+    Validate that the uploaded file is either a valid image or SVG file.
+    """
+    # Check file size first
+    validate_image_size(value)
+
+    # Get the file extension and MIME type
+    filename = value.name.lower()
+    mime_type, _ = mimetypes.guess_type(filename)
+
+    # List of allowed image formats
+    allowed_image_types = [
+        "image/jpeg",
+        "image/png",
+        "image/gif",
+        "image/webp",
+        "image/bmp",
+        "image/tiff",
+        "image/svg+xml",
+    ]
+
+    # Check if it's an SVG file
+    if filename.endswith(".svg") or mime_type == "image/svg+xml":
+        try:
+            # Reset file pointer and read content
+            value.seek(0)
+            content = value.read()
+            value.seek(0)  # Reset for later use
+
+            # Try to parse as XML to ensure it's valid SVG
+            ET.fromstring(content)
+            return  # Valid SVG
+        except ET.ParseError:
+            raise ValidationError("Invalid SVG file format")
+
+    # For non-SVG files, check MIME type
+    if mime_type not in allowed_image_types:
+        raise ValidationError(
+            f"Unsupported file type. Allowed types: JPEG, PNG, GIF, WebP, BMP, TIFF, SVG"
+        )
+
+
 class Currency(models.TextChoices):
     CHF = "CHF", "Swiss Franc"
     EUR = "EUR", "Euro"

hub/services/models/images.py

@@ -1,12 +1,13 @@
 import os
-
+import mimetypes
+import xml.etree.ElementTree as ET
 from django.db import models
 from django.utils import timezone
 from django.contrib.auth.models import User
 from django.core.exceptions import ValidationError
 from django.utils.text import slugify
 from PIL import Image as PILImage
-from .base import validate_image_size
+from .base import validate_image_or_svg
 
 
 def get_image_upload_path(instance, filename):
@@ -35,10 +36,10 @@ class ImageLibrary(models.Model):
     )
 
     # Image file
-    image = models.ImageField(
+    image = models.FileField(
         upload_to=get_image_upload_path,
-        validators=[validate_image_size],
+        validators=[validate_image_or_svg],
-        help_text="Upload image file (max 1MB)",
+        help_text="Upload image file (max 1MB) - supports JPEG, PNG, GIF, WebP, BMP, TIFF, and SVG",
     )
 
     # Image properties (automatically populated)
@@ -122,14 +123,86 @@ class ImageLibrary(models.Model):
         Update image properties like width, height, and file size.
         """
         try:
-            # Get image dimensions
+            # Get file size
+            self.file_size = self.image.size
+
+            # Check if it's an SVG file
+            filename = self.image.name.lower()
+            mime_type, _ = mimetypes.guess_type(filename)
+
+            if filename.endswith(".svg") or mime_type == "image/svg+xml":
+                # For SVG files, try to extract dimensions from the SVG content
+                try:
+                    with open(self.image.path, "r", encoding="utf-8") as f:
+                        content = f.read()
+
+                    # Parse the SVG to extract width and height
+                    root = ET.fromstring(content)
+
+                    # Get width and height attributes
+                    width = root.get("width")
+                    height = root.get("height")
+
+                    # Extract numeric values if they exist
+                    if width and height:
+                        # Remove units like 'px', 'em', etc. and convert to int
+                        try:
+                            width_val = int(
+                                float(
+                                    width.replace("px", "")
+                                    .replace("em", "")
+                                    .replace("pt", "")
+                                )
+                            )
+                            height_val = int(
+                                float(
+                                    height.replace("px", "")
+                                    .replace("em", "")
+                                    .replace("pt", "")
+                                )
+                            )
+                            self.width = width_val
+                            self.height = height_val
+                        except (ValueError, TypeError):
+                            # If we can't parse dimensions, try viewBox
+                            viewbox = root.get("viewBox")
+                            if viewbox:
+                                try:
+                                    viewbox_parts = viewbox.split()
+                                    if len(viewbox_parts) >= 4:
+                                        self.width = int(float(viewbox_parts[2]))
+                                        self.height = int(float(viewbox_parts[3]))
+                                except (ValueError, TypeError):
+                                    # Default SVG dimensions if we can't parse
+                                    self.width = 100
+                                    self.height = 100
+                    else:
+                        # Check for viewBox if width/height attributes don't exist
+                        viewbox = root.get("viewBox")
+                        if viewbox:
+                            try:
+                                viewbox_parts = viewbox.split()
+                                if len(viewbox_parts) >= 4:
+                                    self.width = int(float(viewbox_parts[2]))
+                                    self.height = int(float(viewbox_parts[3]))
+                            except (ValueError, TypeError):
+                                self.width = 100
+                                self.height = 100
+                        else:
+                            # Default SVG dimensions
+                            self.width = 100
+                            self.height = 100
+
+                except (ET.ParseError, FileNotFoundError, UnicodeDecodeError):
+                    # If SVG parsing fails, set default dimensions
+                    self.width = 100
+                    self.height = 100
+            else:
+                # For raster images, use PIL
                 with PILImage.open(self.image.path) as img:
                     self.width = img.width
                     self.height = img.height
 
-            # Get file size
-            self.file_size = self.image.size
-
             # Save without calling the full save method to avoid recursion
             ImageLibrary.objects.filter(pk=self.pk).update(
                 width=self.width, height=self.height, file_size=self.file_size
@@ -175,6 +248,28 @@ class ImageLibrary(models.Model):
             self.usage_count -= 1
             self.save(update_fields=["usage_count"])
 
+    def is_svg(self):
+        """
+        Check if the uploaded file is an SVG.
+        """
+        if not self.image:
+            return False
+
+        filename = self.image.name.lower()
+        mime_type, _ = mimetypes.guess_type(filename)
+
+        return filename.endswith(".svg") or mime_type == "image/svg+xml"
+
+    def get_mime_type(self):
+        """
+        Return the MIME type of the image file.
+        """
+        if not self.image:
+            return None
+
+        mime_type, _ = mimetypes.guess_type(self.image.name)
+        return mime_type
+
 
 class ImageReference(models.Model):
     """

hub/services/static/admin/css/image_library.css

@@ -77,3 +77,33 @@
     background-color: #f0f0f0;
     color: #666;
 }
+
+/* SVG support */
+.svg-preview {
+    background: #f5f5f5;
+    border: 1px solid #ddd;
+    border-radius: 4px;
+    padding: 5px;
+}
+
+.svg-preview object {
+    width: 100%;
+    height: 100%;
+}
+
+/* SVG thumbnails in admin */
+.image-thumbnail object {
+    background: #f5f5f5;
+    border-radius: 4px;
+}
+
+.image-preview object {
+    background: #f5f5f5;
+    border-radius: 4px;
+}
+
+/* Category badges */
+.category-badge.svg {
+    background-color: #f3e8ff;
+    color: #7c3aed;
+}

hub/services/templatetags/image_library.py

@@ -10,6 +10,7 @@ register = template.Library()
 def image_library_img(slug_or_id, css_class="", alt_text="", width=None, height=None):
     """
     Render an image from the image library by slug or ID.
+    Automatically handles SVG files with proper rendering.
 
     Usage:
     {% image_library_img "my-image-slug" css_class="img-fluid" %}
@@ -25,7 +26,35 @@ def image_library_img(slug_or_id, css_class="", alt_text="", width=None, height=
         # Use provided alt_text or fall back to image's alt_text
         final_alt_text = alt_text or image.alt_text
 
-        # Build HTML attributes
+        # Check if it's an SVG file
+        if image.is_svg():
+            # For SVG files, use object tag for better rendering
+            attrs = {
+                "data": image.image.url,
+                "type": "image/svg+xml",
+                "alt": final_alt_text,
+            }
+
+            if css_class:
+                attrs["class"] = css_class
+
+            if width:
+                attrs["width"] = width
+
+            if height:
+                attrs["height"] = height
+
+            # Build the object tag with img fallback
+            attr_string = " ".join(f'{k}="{v}"' for k, v in attrs.items())
+            return format_html(
+                '<object {}><img src="{}" alt="{}" class="{}"/></object>',
+                attr_string,
+                image.image.url,
+                final_alt_text,
+                css_class or "",
+            )
+        else:
+            # For raster images, use img tag
             attrs = {
                 "src": image.image.url,
                 "alt": final_alt_text,