e1bae44036
* feat(learn): migrate mongodb-mongoose instructions to learn * remove extraneous quotation mark * update with boilerplate change * grammar changes on instructions Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com> Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>
2.3 KiB
id, title, challengeType, forumTopicId
| id | title | challengeType | forumTopicId |
|---|---|---|---|
| 587d7fb8367417b2b2512c0e | Perform Classic Updates by Running Find, Edit, then Save | 2 | 301541 |
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
Modify the findEditThenSave function to 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 case, favoriteFoods 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
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