freeCodeCamp/curriculum/challenges/english/05-apis-and-microservices/mongodb-and-mongoose/delete-many-documents-with-model.remove.md

id, title, challengeType, forumTopicId, dashedName

id	title	challengeType	forumTopicId	dashedName
587d7fb8367417b2b2512c11	Delete Many Documents with model.remove()	2	301538	delete-many-documents-with-model-remove

--description--

Model.remove() is useful to delete all the documents matching given criteria.

--instructions--

Modify the removeManyPeople function to delete all the people whose name is within the variable nameToRemove, using Model.remove(). Pass it to a query document with the name field set, and a callback.

Note: The Model.remove() doesn’t return the deleted document, but a JSON object containing the outcome of the operation, and the number of items affected. Don’t forget to pass it to the done() callback, since we use it in tests.

--hints--

Deleting many items at once should succeed

(getUserInput) =>
  $.ajax({
    url: getUserInput('url') + '/_api/remove-many-people',
    type: 'POST',
    contentType: 'application/json',
    data: JSON.stringify([
      { name: 'Mary', age: 16, favoriteFoods: ['lollipop'] },
      { name: 'Mary', age: 21, favoriteFoods: ['steak'] }
    ])
  }).then(
    (data) => {
      assert.isTrue(!!data.ok, 'The mongo stats are not what expected');
      assert.equal(
        data.n,
        2,
        'The number of items affected is not what expected'
      );
      assert.equal(data.count, 0, 'the db items count is not what expected');
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );

--solutions--

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