Ensure reports have an issue id and a user id

db/migrate/20160822153055_create_issues_and_reports.rb

@@ -21,8 +21,8 @@ class CreateIssuesAndReports < ActiveRecord::Migration[5.0]
     add_index :issues, :updated_by
 
     create_table :reports do |t|
-      t.integer :issue_id
-      t.integer :user_id
+      t.integer :issue_id, :null => false
+      t.integer :user_id, :null => false
       t.text :details, :null => false
       t.string :category, :null => false
       t.timestamps :null => false

db/structure.sql

@@ -1064,8 +1064,8 @@ CREATE TABLE relations (
 
 CREATE TABLE reports (
     id integer NOT NULL,
-    issue_id integer,
-    user_id integer,
+    issue_id integer NOT NULL,
+    user_id integer NOT NULL,
     details text NOT NULL,
     category character varying NOT NULL,
     created_at timestamp without time zone NOT NULL,