Se modifico un poco el layout y la opcion de cambiar la categoria

.idea/codeStyles/codeStyleConfig.xml

@@ -0,0 +1,5 @@
+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="PREFERRED_PROJECT_CODE_STYLE" value="Default" />
+  </state>
+</component>

files/files.py

@@ -99,8 +99,9 @@ def upload_file():
 @bp.route('/preview/<int:id>')
 def preview_file(id):
     file = File.query.get(id)
+    categories = Category.query.all()
     if (file.private == 1 and g.user is not None) or (file.private == 0):
-        return render_template('files/preview.html', file=file)
+        return render_template('files/preview.html', file=file, categories=categories)
     else:
         return abort(404)
 
@@ -108,28 +109,45 @@ def preview_file(id):
 @bp.route('/rename/<int:id>', methods=['POST'])
 @admin_required
 def rename_file(id):
-    if request.method == 'POST':
-        file = File.query.get(id)
+    file = File.query.get(id)
 
-        new_name = request.form['new_name'].lower()
-        extension = file.filename.rsplit('.', 1)[1].lower()
+    new_name = request.form['new_name'].lower()
+    extension = file.filename.rsplit('.', 1)[1].lower()
 
-        if "." in new_name and _get_extension(new_name):
-            new_name = new_name.rsplit('.', 1)[0] + '.' + extension
-        else:
-            new_name = new_name + '.' + extension
+    if "." in new_name and _get_extension(new_name):
+        new_name = new_name.rsplit('.', 1)[0] + '.' + extension
+    else:
+        new_name = new_name + '.' + extension
 
-        _rename_file(file, new_name)
+    _rename_file(file, new_name)
 
-        return redirect(url_for('files.preview_file', id=file.id))
+    return redirect(url_for('files.preview_file', id=file.id))
+
+
+@bp.route('/recategorize/<int:id>', methods=['POST'])
+@admin_required
+def recategorize(id):
+    file = File.query.get(id)
+     
+    if 'new_category' not in request.form:
+        flash('No category selected')
+        return redirect(request.url)
+
+    new_category = Category.query.get(request.form['new_category'])
+    if new_category is None:
+        flash('The category selected won\'t exists')
+        return redirect(request.url)
+    
+    file.category_id = new_category.id
+    db.session.commit()
+
+    return redirect(url_for('files.preview_file', id=file.id))
+    
 
 
 @bp.route('/delete/<int:id>', methods=['POST'])
 @admin_required
 def delete_file(id):
-    if request.method == 'POST':
-        file = File.query.get(id)
-        _delete_file(file)
-        return redirect(url_for('index'))
-    else:
-        abort(404)
+    file = File.query.get(id)
+    _delete_file(file)
+    return redirect(url_for('index'))

files/static/style.css

@@ -8,21 +8,17 @@ a {
     text-decoration: none;
 }
 
-img {
-  display: block;
-  max-width: 100%;
-  max-height: 90%;
-  margin: 1rem auto 5rem auto;
+img.preview {
+    display: block;
+    max-width: 100%;
+    max-height: 100%;
+    margin: 1rem auto 5rem auto;
 }
 
 h1, h2, h3, h4, h5, h6 {
     color: var(--primary-color);
 }
 
-.flash {
-    color: #ff0000;
-}
-
 .navbar {
     padding-top: 2rem;
     padding-bottom: 1.8rem;
@@ -32,28 +28,24 @@ h1, h2, h3, h4, h5, h6 {
     margin-bottom: 2rem;
 }
 
-.navbar > *{
-    font-size: 2rem;
-}
-
 .nav-link {
     color: var(--secondary-color);
 }
 
-.button.button-primary, 
-button.button-primary, 
-input[type="submit"].button-primary, 
-input[type="reset"].button-primary, 
+.button.button-primary,
+button.button-primary,
+input[type="submit"].button-primary,
+input[type="reset"].button-primary,
 input[type="button"].button-primary {
     background-color: var(--primary-color);
     border-color: var(--primary-color);
 }
 
-.button.button-primary:hover, 
+.button.button-primary:hover,
 button.button-primary:hover,
 input[type="submit"].button-primary:hover,
 input[type="reset"].button-primary:hover,
-input[type="button"].button-primary:hover, 
+input[type="button"].button-primary:hover,
 .button.button-primary:focus,
 button.button-primary:focus,
 input[type="submit"].button-primary:focus,
@@ -63,7 +55,7 @@ input[type="button"].button-primary:focus {
     border-color: var(--secondary-color);
 }
 
-.grid{
+.grid {
     display: grid;
     grid-template-columns: repeat(5, 1fr);
     grid-gap: 3rem 1rem;

files/templates/about/about.html

@@ -3,7 +3,7 @@
 {% block title %}about{% endblock %}
 
 {% block content %}
-<h3>About This</h3>
+<h4>About This</h4>
 <p>This page is a simple static file server mainly for things that i want to link in my main webpage. If for some reason, one of the files uploaded here belongs to you, and you dont want it here, send me a message and I will contact you.</p>
 
 {% for message in get_flashed_messages() %}

files/templates/base.html

@@ -11,7 +11,7 @@
 <body>
     <nav class="navbar">
         <div class="container">
-            <a href="{{ url_for('index') }}" class="nav-brand">/files</a>
+            <a href="{{ url_for('index') }}" class="h1 nav-brand">/files</a>
             <a href="{{ url_for('categories.index') }}" class="nav-link">/categories</a>
             <a href="{{ url_for('about') }}" class="nav-link">/about</a>
 

files/templates/categories/create.html

@@ -1,9 +1,9 @@
 {% extends 'base.html' %}
 
-{% block title %}Categories{% endblock %}
+{% block title %}categories/create{% endblock %}
 
 {% block content %}
-    <h3>Create a new Category</h3>
+    <h3>Create category</h3>
     <form method="post">
         <label for="name">~/name</label>
         <input type="text" class="u-full-width" name="name" id="name">

files/templates/categories/index.html

@@ -1,8 +1,9 @@
 {% extends 'base.html' %}
 
-{% block title %}category{% endblock %}
+{% block title %}categories{% endblock %}
 
 {% block content %}
+    <h4>Categories</h4>
     <div class="grid">
         {% for category in categories %}
             <a href="{{ url_for('categories.view', id=category.id) }}">{{ category.name }}</a>
@@ -10,4 +11,3 @@
     </div>
 {% endblock %}
 
-

files/templates/categories/view.html

@@ -3,7 +3,7 @@
 {% block title %}categories/view/{{ category.name }}{% endblock %}
 
 {% block content %}
-    <h3>{{ category.name }}</h3>
+    <h4>{{ category.name }}</h4>
     <div class="grid">
         {% for file in files %}
             <a href="{{ url_for('files.preview_file', id=file.id) }}">{{ file.filename }}</a>

files/templates/files/index.html

@@ -5,7 +5,9 @@
 {% block content %}
     <div class="grid">
         {% for file in files %}
-            <a href="{{ url_for('files.preview_file', id=file.id) }}">{{ file.filename}}</a>
+            <div>
+                <a href="{{ url_for('files.preview_file', id=file.id) }}">{{ file.filename}}</a>
+            </div>
         {% endfor %}
     </div>
 {% endblock %}

files/templates/files/preview.html

@@ -9,16 +9,37 @@
     {% endif %}
 
     <div class="row">
-        <h3 class="u-pull-left"><a href="{{ url_for('files.uploaded_file', filename=file.filename) }}">{{ file.filename }}</a></h3>
+        <h4 class="u-pull-left">
+            <a href="{{ url_for('files.uploaded_file', filename=file.filename) }}">{{ file.filename }}</a>
+        </h4>
     </div>
 
-    <img src="{{ url_for('files.uploaded_file', filename=file.filename) }}">
+    <img class="preview" src="{{ url_for('files.uploaded_file', filename=file.filename) }}">
 
     {% if g.user %}
         <form action="{{ url_for('files.rename_file', id=file.id) }}" method="post">
-            <label for="new_name">~/rename</label>
-            <input type="text" class="u-full-width" id="new_name" name="new_name" value="{{ file.filename }}">
-            <input type="submit" class="button-primary u-pull-right" value="rename">
+            <div class="row">
+                <label for="new_name">~/rename</label>
+                <div class="nine columns">
+                    <input type="text" class="u-full-width" id="new_name" name="new_name" value="{{ file.filename }}">
+                </div>
+                <div class="two columns">
+                    <input type="submit" class="button-primary" value="rename">
+                </div>
+            </div>
+        </form>
+        <form action="{{ url_for('files.recategorize', id=file.id) }}" method="post">
+            <label for="new_category">~/category</label>
+            <div class="nine columns">
+                <select class="u-full-width" name="new_category" id="new_category">
+                    {% for category in categories %}
+                    <option value="{{ category.id }}" {{ 'selected' if category.id == file.category_id }}>{{ category.name }}</option>
+                    {% endfor %}
+                </select>
+            </div>
+            <div class="two columns">
+                <input type="submit" class="button-primary" value="change category">
+            </div>
         </form>
     {% endif %}
 

files/templates/files/upload.html

@@ -3,6 +3,8 @@
 {% block title %}upload{% endblock %}
 
 {% block content %}
+    <h4>Upload</h4>
+
     <form method="post" enctype="multipart/form-data">
         <label for="file">~/file</label>
         <input type="file" class="u-full-width" name="file" id="file">