What is the process for making a specific query in MongoDB?

I currently have 3 blog posts stored in my MongoDB database and I am looking to retrieve a specific blog post based on its name.

Here is an example of how the data is structured:

[
  {
    _id: ObjectId("61de0e1562abb7ffd4089373"),
    name: 'learn-react',
    upvotes: 0,
    comments: []
  },
  {
    _id: ObjectId("61de0e1562abb7ffd4089374"),
    name: 'learn-node',
    upvotes: 0,
    comments: []
  },
  {
    _id: ObjectId("61de0e1562abb7ffd4089375"),
    name: 'my-thoughts-on-resumes',
    upvotes: 0,
    comments: []
  }
]

If I want to make a GET request to fetch the 'learn-react' blog post with the URL localhost:8000/articles/learn-react, how can I query the database for this specific document? While I am familiar with using db.find() to retrieve all documents in a collection, I am unsure about how to target one particular blog post by its name in the URL.

mongodbexpressmongodb-query

Answer №1

Utilizing the $unwind method allows for breaking down an array field. By then applying $match, you can effectively filter through the documents! Give this code a try for assistance:

db.getCollection('your collection').aggregate([  
  {
    $unwind: '$cource' //name of the array
  },
 {
    $match: { 'cource.name': 'learn-react' }
  },
]);

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