Place a New Presale Order

The placePreSaleOrder mutation allows a user to place a new presale order with specified details.

Mutation: placePreSaleOrder

Schema:

placePreSaleOrder(
  presaleId: Int!,
  ndbAmount: Float!,
  destination: Int!,
  extAddr: String
): PreSaleOrder

Parameters

• presaleId (Int): The ID of the presale to place an order. This field is mandatory.
• ndbAmount (Float): The amount of NDB tokens to purchase in the order. This field is mandatory.
• destination (Int): Specifies the destination after purchase is successful. Possible values:
  • 1: Internal
  • 2: External
• extAddr (String): If the destination is external, the external address to receive NDB tokens. This field is optional but required if destination is 2.

Return

The mutation returns the created PreSaleOrder object.

Example Mutation

The following is an example of how to use the placePreSaleOrder mutation to place a new presale order:

mutation {
  placePreSaleOrder(
    presaleId: 1,
    ndbAmount: 500.0,
    destination: 2,
    extAddr: "0x1234567890abcdef1234567890abcdef12345678"
  ) {
    id,
    presaleId,
    userId,
    ndbAmount,
    destination,
    extAddr,
    status,
    createdAt,
    updatedAt
  }
}

Note

• The default status of the order is 0. It must be confirmed by any payment later.
• If the destination is 2 (external), the extAddr field must be provided.

In this example, the mutation places a presale order for the presale with ID 1, purchasing 500 NDB tokens, with the destination set to external and an external address specified. The return value includes the details of the created PreSaleOrder.