2.2 KiB
| id | title | challengeType |
|---|---|---|
| 587d7fb8367417b2b2512c0e | Perform Classic Updates by Running Find, Edit, then Save | 2 |
Description
In the good old days this was what you needed to do if you wanted to edit a document and be able to use it somehow e.g. sending it back in a server response. Mongoose has a dedicated updating method : Model.update(). It is bound to the low-level mongo driver. It can bulk edit many documents matching certain criteria, but it doesn’t send back the updated document, only a ‘status’ message. Furthermore it makes model validations difficult, because it just directly calls the mongo driver.
Instructions
Find a person by _id ( use any of the above methods ) with the parameter personId as search key. Add "hamburger" to the list of the person's favoriteFoods (you can use Array.push()). Then - inside the find callback - save() the updated Person.
Note: This may be tricky, if in your Schema, you declared favoriteFoods as an Array, without specifying the type (i.e. [String]). In that casefavoriteFoods defaults to Mixed type, and you have to manually mark it as edited using document.markModified('edited-field'). See Mongoose documentation
Tests
tests:
- text: Find-edit-update an item should succeed
testString: "getUserInput => $.post(getUserInput('url') + '/_api/find-edit-save', {name:'Poldo', age: 40, favoriteFoods:['spaghetti']}).then(data => { assert.equal(data.name, 'Poldo', 'item.name is not what is expected'); assert.equal(data.age, 40, 'item.age is not what expected'); assert.deepEqual(data.favoriteFoods, ['spaghetti', 'hamburger'], 'item.favoriteFoods is not what expected'); assert.equal(data.__v, 1, 'The item should be previously edited'); }, xhr => { throw new Error(xhr.responseText); })"
Challenge Seed
Solution
// solution required