Angular 6 HttpClient – PostgreSQL – Node.js/Express Sequelize CRUD APIs – Post/Get/Put/Delete
Sequelize is a promise-based ORM for Node.js v4 and later. In the tutorial, we will show how to GET/POST/PUT/DELETE
requests from Angular 6 Client to PostgreSQL with NodeJs/Express RestAPIs using Sequelize ORM.
Related posts:
- Node.js/Express RestAPIs CRUD – Sequelize ORM – PostgreSQL
- Node.js/Express RestAPIs – Angular 6 HttpClient – Get/Post/Put/Delete requests + Bootstrap 4
Technologies
- Angular 6
- RxJS 6
- Bootstrap 4
- Visual Studio Code – version 1.24.0
- Nodejs – v8.11.3
- Sequelize
- PostgreSQL
Demo
Overview
Goal
We create 2 projects:
– Angular Client Project:
– Node.js RestAPIs project:
UserCase
Start Node.js server -> Logs:
App listening at http://:::8080
Executing (default): DROP TABLE IF EXISTS "customers" CASCADE;
Executing (default): DROP TABLE IF EXISTS "customers" CASCADE;
Executing (default): CREATE TABLE IF NOT EXISTS "customers" ("id" SERIAL , "firstname" VARCHAR(255), "lastname" VARCHAR(255), "age" INTEGER, "createdAt" TIMESTAMP WITH TIME ZONE NOT NULL, "updatedAt" TIMESTAMP WITH TIME ZONE NOT NULL, PRIMARY KEY ("id"));
Executing (default): SELECT i.relname AS name, ix.indisprimary AS primary, ix.indisunique AS unique, ix.indkey AS indkey, array_agg(a.attnum) as column_indexes, array_agg(a.attname) AS column_names, pg_get_indexdef(ix.indexrelid) AS definition FROM pg_class t, pg_class i, pg_index ix, pg_attribute a WHERE t.oid = ix.indrelid AND i.oid = ix.indexrelid AND a.attrelid = t.oid AND t.relkind = 'r' and t.relname = 'customers' GROUP BY i.relname, ix.indexrelid, ix.indisprimary, ix.indisunique, ix.indkey ORDER BY i.relname;
Drop and Resync with { force: true }
Executing (default): INSERT INTO "customers" ("id","firstname","lastname","age","createdAt","updatedAt") VALUES (DEFAULT,'Joe','Thomas',36,'2018-07-11 08:31:06.976 +00:00','2018-07-11 08:31:06.976 +00:00') RETURNING *;
Executing (default): INSERT INTO "customers" ("id","firstname","lastname","age","createdAt","updatedAt") VALUES (DEFAULT,'Peter','Smith',18,'2018-07-11 08:31:06.977 +00:00','2018-07-11 08:31:06.977 +00:00') RETURNING *;
Executing (default): INSERT INTO "customers" ("id","firstname","lastname","age","createdAt","updatedAt") VALUES (DEFAULT,'Lauren','Taylor',31,'2018-07-11 08:31:06.978 +00:00','2018-07-11 08:31:06.978 +00:00') RETURNING *;
Executing (default): INSERT INTO "customers" ("id","firstname","lastname","age","createdAt","updatedAt") VALUES (DEFAULT,'Mary','Taylor',24,'2018-07-11 08:31:06.978 +00:00','2018-07-11 08:31:06.978 +00:00') RETURNING *;
Executing (default): INSERT INTO "customers" ("id","firstname","lastname","age","createdAt","updatedAt") VALUES (DEFAULT,'David','Moore',25,'2018-07-11 08:31:06.978 +00:00','2018-07-11 08:31:06.978 +00:00') RETURNING *;
Executing (default): INSERT INTO "customers" ("id","firstname","lastname","age","createdAt","updatedAt") VALUES (DEFAULT,'Holly','Davies',27,'2018-07-11 08:31:06.978 +00:00','2018-07-11 08:31:06.978 +00:00') RETURNING *;
Executing (default): INSERT INTO "customers" ("id","firstname","lastname","age","createdAt","updatedAt") VALUES (DEFAULT,'Michael','Brown',45,'2018-07-11 08:31:06.979 +00:00','2018-07-11 08:31:06.979 +00:00') RETURNING *;
-> PostgreSQL records:
More at:
Angular 6 HttpClient – PostgreSQL – Node.js/Express Sequelize CRUD APIs – Post/Get/Put/Delete
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