add "related documents"

sdbs_pile/pile/admin.py

@@ -1,3 +1,4 @@
+from django import forms
 from django.contrib import admin
 
 from sdbs_pile.pile.models import Tag, Document
@@ -31,12 +32,25 @@ class DocumentExternalListFilter(admin.SimpleListFilter):
             return queryset
 
 
+class DocumentAdminForm(forms.ModelForm):
+    related = forms.ModelMultipleChoiceField(queryset=Document.objects.none())
+
+    class Meta:
+        model = Document
+        fields = '__all__'
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.fields['related'].queryset = Document.objects.exclude(pk=self.instance.pk)
+
+
 class DocumentAdmin(admin.ModelAdmin):
     exclude = ('is_removed',)
     list_display = ('title', 'author', 'published', 'media_type', 'status', 'has_file', 'public', 'filed_under')
     list_filter = ('tags', 'media_type', 'status', DocumentExternalListFilter, 'public')
     search_fields = ('title', 'author', 'published')
     actions = ('make_published', 'make_hidden')
+    form = DocumentAdminForm
 
     def has_file(self, document: Document):
         return document.file is not None and str(document.file).strip() != ''

sdbs_pile/pile/migrations/0011_document_related.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.0.4 on 2020-06-09 08:32
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pile', '0010_document_media_type'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='document',
+            name='related',
+            field=models.ManyToManyField(related_name='_document_related_+', to='pile.Document'),
+        ),
+    ]

sdbs_pile/pile/models.py

@@ -57,6 +57,7 @@ class Document(SoftDeletableModel):
                               max_length=3, choices=DocumentStatus.choices, default=DocumentStatus.STANDARD)
     tags = models.ManyToManyField(Tag, related_name="documents", blank=True)
     uploaded = models.DateTimeField(auto_now_add=True, null=True)
+    related = models.ManyToManyField('self', related_name='related')
 
     objects = DocumentManager()
 

sdbs_pile/pile/static/main.css

@@ -220,7 +220,7 @@ ul > li:before {
     margin-bottom: .5em;
 }
 
-.index-listing-desc {
+.short-doc-desc {
     font-size: 12pt;
     color: #bfbfbf;
     padding-left: calc(20px + .5rem);
@@ -231,7 +231,7 @@ ul > li:before {
     text-overflow: ellipsis;
 }
 
-.index-listing-desc p {
+.short-doc-desc p {
     margin-top: 0;
 }
 

sdbs_pile/pile/templates/front_doc_detail.html

@@ -64,6 +64,26 @@
                 <a href="{% url "pile:label" document.id %}">{% url "pile:label" document.id %}</a>
             </div>
         {% endif %}
+        {% if document.related.exists %}
+            <hr>
+            <h2>Related documents</h2>
+            <ul>
+                {% for related in document.related.all %}
+                    <li>
+                        <a href="{% url 'pile:document' related.id %}">
+                            {% if related.uploaded %}
+                                <em>({{ related.uploaded|date:"Y/m/d G:i:s" }})</em>
+                            {% endif %}
+                            {{ related.title }}
+
+                            <div class="short-doc-desc">
+                                {{ related.plain_description }}
+                            </div>
+                        </a>
+                    </li>
+                {% endfor %}
+            </ul>
+        {% endif %}
     </div>
 {% endblock %}
 

sdbs_pile/pile/templates/front_intro.html

@@ -17,12 +17,12 @@
                 <a href="{% url 'pile:document' random_document.id %}">
                     <span>#{{ random_document.id }}: {{ random_document.title }}</span>
 
-                    <div class="index-listing-desc">
+                    <div class="short-doc-desc">
                         {% if random_document.tags.count > 0 %}
                             <div class="random-tags">Filed under: {{ random_document.tags.all | join:" / " }}</div>
                         {% endif %}
                     </div>
-                    <div class="index-listing-desc">
+                    <div class="short-doc-desc">
                         {{ random_document.plain_description }}
                     </div>
                 </a>
@@ -41,7 +41,7 @@
                         {% endif %}
                         {{ document.title }}
 
-                        <div class="index-listing-desc">
+                        <div class="short-doc-desc">
                             {{ document.plain_description }}
                         </div>
                     </a>