feat: Create empty trigger step when the flow is created

packages/backend/src/db/migrations/20220105151725_remove_constraints_from_steps.ts

@@ -0,0 +1,16 @@
+import { Knex } from "knex";
+
+export async function up(knex: Knex): Promise<void> {
+  return knex.schema.alterTable('steps', table => {
+    table.string('key').nullable().alter();
+    table.string('app_key').nullable().alter();
+  })
+}
+
+export async function down(knex: Knex): Promise<void> {
+  return knex.schema.alterTable('steps', table => {
+    table.string('key').notNullable().alter();
+    table.string('app_key').notNullable().alter();
+  })
+}
+

packages/backend/src/graphql/mutations/create-flow.ts

@@ -1,4 +1,5 @@
 import Flow from '../../models/flow';
+import Step from '../../models/step';
 import flowType from '../types/flow';
 import RequestWithCurrentUser from '../../types/express/request-with-current-user';
 
@@ -7,6 +8,11 @@ const createFlowResolver = async (req: RequestWithCurrentUser) => {
     userId: req.currentUser.id
   });
 
+  await Step.query().insert({
+    flowId: flow.id,
+    type: 'trigger'
+  })
+
   return flow;
 }
 

packages/backend/src/graphql/queries/get-flow.ts

@@ -1,4 +1,4 @@
-import { GraphQLNonNull, GraphQLString } from 'graphql';
+import { GraphQLNonNull, GraphQLInt } from 'graphql';
 import Flow from '../../models/flow';
 import RequestWithCurrentUser from '../../types/express/request-with-current-user';
 import flowType from '../types/flow';
@@ -19,7 +19,7 @@ const getFlowResolver = async (params: Params, req: RequestWithCurrentUser) => {
 const getFlow = {
   type: flowType,
   args: {
-    id: { type: GraphQLNonNull(GraphQLString) },
+    id: { type: GraphQLNonNull(GraphQLInt) },
   },
   resolve: (_: any, params: Params, req: RequestWithCurrentUser) => getFlowResolver(params, req)
 }

packages/backend/src/graphql/types/step.ts

@@ -5,8 +5,8 @@ const stepType = new GraphQLObjectType({
   name: 'Step',
   fields: {
     id: { type: GraphQLInt },
-    key: { type: GraphQLNonNull(GraphQLString) },
+    key: { type: GraphQLString },
-    appKey: { type: GraphQLNonNull(GraphQLString) },
+    appKey: { type: GraphQLString },
     type: {
       type: new GraphQLEnumType({
         name: 'StepEnumType',

packages/backend/src/models/step.ts

@@ -10,8 +10,8 @@ enum StepEnumType {
 class Step extends Base {
   id!: number
   flowId!: number
-  key!: string
+  key: string
-  appKey!: string
+  appKey: string
   type!: StepEnumType
   connectionId!: number
   parameters: any
@@ -20,7 +20,7 @@ class Step extends Base {
 
   static jsonSchema = {
     type: 'object',
-    required: ['key', 'appKey', 'type', 'connectionId'],
+    required: ['type'],
 
     properties: {
       id: { type: 'integer' },

packages/web/src/components/EditorLayout/index.tsx

@@ -22,7 +22,7 @@ type EditorLayoutProps = {
 export default function EditorLayout(props: EditorLayoutProps) {
   const { flowId } = useParams();
   const formatMessage = useFormatMessage();
-  const { data } = useQuery(GET_FLOW, { variables: { id: flowId }});
+  const { data } = useQuery(GET_FLOW, { variables: { id: Number(flowId) }});
   const flow: Flow = data?.getFlow;
 
   return (