fixed file preview handle

akarpov/files/models.py

@@ -38,6 +38,9 @@ def get_absolute_url(self):
     def __str__(self):
         return f"file: {self.name}"
 
+    class Meta:
+        ordering = ["modified"]
+
 
 class FileInTrash(TimeStampedModel):
     user = ForeignKey("users.User", related_name="trash_files", on_delete=CASCADE)

akarpov/files/services/preview.py

@@ -2,7 +2,6 @@
 
 import magic
 from PIL import Image, ImageDraw, ImageFont
-from preview_generator.exception import UnsupportedMimeType
 from preview_generator.manager import PreviewManager
 
 cache_path = "/tmp/preview_cache"
@@ -79,11 +78,9 @@ def _font_points_to_pixels(pt):
 
 def create_preview(file_path: str) -> str:
     # TODO: add text image generation/code image
-    try:
-        path_to_preview_image = manager.get_jpeg_preview(file_path)
-    except UnsupportedMimeType:
-        return ""
-    return path_to_preview_image
+    if manager.has_jpeg_preview(file_path):
+        return manager.get_jpeg_preview(file_path, height=500)
+    return ""
 
 
 def get_file_mimetype(file_path: str) -> str:

akarpov/files/tasks.py

@@ -1,5 +1,6 @@
 import os
 
+import structlog
 from celery import shared_task
 from django.core.files import File
 
@@ -10,20 +11,25 @@
     get_file_mimetype,
 )
 
+logger = structlog.get_logger(__name__)
+
 
 @shared_task()
 def process_file(pk: int):
     file = FileModel.objects.get(pk=pk)
     if not file.name:
         file.name = file.file.name.split("/")[-1]
-    pth = create_preview(file.file.path)
-    if pth:
-        with open(pth, "rb") as f:
-            file.preview.save(
-                pth.split("/")[-1],
-                File(f),
-                save=False,
-            )
+    try:
+        pth = create_preview(file.file.path)
+        if pth:
+            with open(pth, "rb") as f:
+                file.preview.save(
+                    pth.split("/")[-1],
+                    File(f),
+                    save=False,
+                )
+    except Exception as e:
+        logger.error(e)
     file.type = get_file_mimetype(file.file.path)
     file.description = get_description(file.file.path)
     file.save(update_fields=["preview", "name", "file_type", "description"])

akarpov/templates/files/list.html

@@ -4,7 +4,20 @@
 {% for folder in folders %}
   {{ folder.name }}
 {% endfor %}
-{% for file in file_list %}
-  {{ file.name }} - {{ file.file.url }}
-{% endfor %}
+<div class="row">
+  {% for file in file_list %}
+    <div class="col-sm-2">
+      <div class="card">
+        <div class="card-body">
+          <h5 class="card-title">{{ file.name }}</h5>
+          <p class="card-text">{{ file.description }}</p>
+          <p class="card-text"><small class="text-body-secondary">Last updated 3 mins ago</small></p>
+        </div>
+      {% if file.preview %}
+      <img src="{{ file.preview.url }}" class="card-img-bottom" alt="">
+      {% endif %}
+    </div>
+  </div>
+  {% endfor %}
+</div>
 {% endblock %}