Creating the PATCH route function

In this section, we are going to create the HTTP PATCH method that will be mocked by the MirageJS server. Follow these steps to create it:

1. For the PATCH methods, we need to create a new file called patch.js in the src/server folder.
2. For this recipe, we will make a generic patchFrom function that receives a key as an argument and returns a function. This returned function will parse the data property of the HTTP request body and returns an internal function of the server schema that updates a specific object with the id property that was passed along with the data. Using the key argument, the schema knows which table we are handling:

export const patchFrom = key => (schema, request) => {
  const { data } = typeof request.requestBody === 'string'
    ? JSON.parse(request.requestBody)
    : request.requestBody;

  return schema.db[key].update(data.id, data);
};

export default {
  patchFrom,
};