photos and comments functionality for contributions, moderation page functionality pending

migrations/006_comments_and_photos.sql

@@ -0,0 +1,35 @@
+-- =====================================================================
+-- Migration 006: Comments Table and Photo Support
+-- =====================================================================
+
+
+-- ---------------------------------------------------------------------
+-- Block 1: Creates Table "comments"
+-- Stores Comments on Contributions. Comments is linked to
+-- Contributions and identified by browser_id.
+-- ---------------------------------------------------------------------
+CREATE TABLE IF NOT EXISTS comments (
+    comment_id      SERIAL PRIMARY KEY,
+    contribution_id INTEGER NOT NULL REFERENCES contributions(contribution_id) ON DELETE CASCADE,
+    author_name     VARCHAR(100) NOT NULL,
+    browser_id      VARCHAR(36) DEFAULT NULL,
+    content         TEXT NOT NULL,
+    created_at      TIMESTAMP NOT NULL DEFAULT NOW()
+);
+
+
+-- ---------------------------------------------------------------------
+-- Block 2: Indexes for fast Comment Queries
+-- ---------------------------------------------------------------------
+CREATE INDEX idx_comments_contribution ON comments(contribution_id);
+CREATE INDEX idx_comments_browser ON comments(browser_id);
+
+
+-- ---------------------------------------------------------------------
+-- Block 3: Adds Photo Path Column to Contributions
+-- Stores relative Path to uploaded Photo File.
+-- ---------------------------------------------------------------------
+ALTER TABLE contributions
+    ADD COLUMN photo_path VARCHAR(255) DEFAULT NULL;
+
+COMMENT ON COLUMN contributions.photo_path IS 'Relative Path to uploaded Photo. NULL = no Photo.';