Following Get Method, as evident, we will have Post Method.
Same as Get Method, open CustomerController.cs.
Add a [HttpPost] route.
CustomerController.cs
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.
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[HttpPost]
public async Task<ActionResult<Customer>> PostCustomer(Customer customer)
{
_context.Customers.Add(customer);
await _context.SaveChangesAsync();
return Ok(customer);
}
In above code, it retrieve a customer json object from Request body and return 200 status with that customer json object.
Let see how it work.
Open Postman.
Set Type to Post.
Go to Body section.
Input
{
  "id": 0,
  "name": "Goku",
  "email": "goku@gmail.com",
  "phone": "87654312",
  "address": "shinnjukku 123",
  "city": "Tokyo"
}
Column id can be igoned since the id will auto generated by the DB.
Result.
You may notice that the respone status is also 200 OK, but there is a status can be used under this circumstances. Which is 201 Created.
To do this, we have to modify the return OK(customer).
Like this.
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.
.
[HttpPost]
public async Task<ActionResult<Customer>> PostCustomer(Customer customer)
{
_context.Customers.Add(customer);
await _context.SaveChangesAsync();
return CreatedAtAction(nameof(GetCustomerById), new { id = customer.Id }, customer);
}
CreatedAtAction is refer to 201 Created.
Inside the CreatedAtAction(), it retrieve the new add record through the GetCustomerById() method with the customer.Id.
Let’s take a look.
Also, the CustomerDB.
