Add migration for script_options.

migrations/20190625124200_add_interaction_step_script_options.js

@@ -0,0 +1,48 @@
+// Add script_options column to interaction_step
+exports.up = function(knex, Promise) {
+  return knex.schema
+    .alterTable("interaction_step", table => {
+      table.specificType("script_options", "text ARRAY").nullable();
+    })
+    .then(() =>
+      // Backfill values
+      knex("interaction_step").update({
+        script_options: knex.raw("ARRAY[script]")
+      })
+    )
+    .then(() =>
+      // Make not nullable
+      knex.schema.alterTable("interaction_step", table => {
+        table
+          .specificType("script_options", "text ARRAY")
+          .notNullable()
+          .alter();
+      })
+    )
+    .then(() =>
+      knex.schema.alterTable("interaction_step", table => {
+        table.dropColumn("script");
+      })
+    );
+};
+
+// Drop script_options column to interaction_step
+exports.down = function(knex, Promise) {
+  return knex.schema
+    .alterTable("interaction_step", table => {
+      table
+        .text("script")
+        .notNullable()
+        .defaultTo("");
+    })
+    .then(() =>
+      knex("interaction_step").update({
+        script: knex.raw("script_options[0]")
+      })
+    )
+    .then(() =>
+      knex.schema.alterTable("interaction_step", table => {
+        table.dropColumn("script_options");
+      })
+    );
+};