freeCodeCamp/curriculum/challenges/english/05-apis-and-microservices/mongodb-and-mongoose/perform-classic-updates-by-running-find-edit-then-save.en.md

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 binded 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. Find a person by _id ( use any of the above methods ) with the parameter personId as search key. Add “hamburger” to the list of her favoriteFoods (you can use Array.push()). Then - inside the find callback - save() the updated Person. [*] Hint: 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'). (http://mongoosejs.com/docs/schematypes.html - #Mixed )

Instructions

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 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