Added post versions; updated db boilerplate

migrations/2021-09-13-143540_sections/up.sql

@@ -6,17 +6,17 @@ create table sections (
     -- Name to use when routing (this just makes for prettier URLs)
     shortname varchar(32) UNIQUE NOT NULL,
     -- Optional description of the section
-    description text,
+    description text NOT NULL DEFAULT '',
     -- Wether to show the section in the default list on the homepage
     is_default boolean NOT NULL DEFAULT false,
     -- Wether the posts should contain titles or not
     has_titles boolean NOT NULL DEFAULT true,
     -- Wether posts in this section should be shown publicly
-    is_private boolean NOT NULL DEFAULT false
+    is_private boolean NOT NULL DEFAULT false,
+    -- Wether the section is archived
+    is_archived boolean NOT NULL DEFAULT false
 );
 
-create index sections_shortname_index on sections(shortname);
-
 create table posts (
     id uuid DEFAULT gen_random_uuid() PRIMARY KEY,
 
@@ -51,13 +51,6 @@ create table versions (
     CONSTRAINT no_null_published_date CHECK (is_draft OR publish_date IS NOT NULL)
 );
 
-create table tags (
-    post_id uuid NOT NULL REFERENCES posts(id) ON DELETE CASCADE,
-    value varchar(64) NOT NULL,
-
-    PRIMARY KEY (post_id, value)
-);
-
 create function enforce_version_titles() returns trigger as $$
     begin
         -- Draft versions shouldn't be evaluated.