Building the backend of the card modal

Now, let's focus on implementing the backend of the card modal window, and start with the API handlers.

APIs for the card modal

The following are the APIs that we will need to create for the card modal window:

• The API to get a card
• The API to change the card title
• The API to change the card description
• The API to add comments to a card
• The API to get the activities from a card
• The API to add attachments to a card
• The API to get attachments from a card

Let's take a look at the individual APIs:

Get card API

This will be a GET request sent to /api/cards/{cardId}. Through this API, we will get the following card information:

{
  "id": 4,
  "title": "Increase my handcraft skill",
  "boardId": 1,
  "description": "",
  "cardListId": 1
}

Change card title API

This will be a PUT request sent to /api/cards/{cardId}/title with a payload similar to the following:

{
  "title": "This is a new card title"
}

The response of the API will be simply an HTTP status of 200 when the change...