sherlaimov/homelike-server

Homelike server for assignment

Solution

1. add new endpoint /countries which should represent the data from the countries collection

Done.

2. add new endpoint /countries which should represent the data from the countries collection

Done.

3. add countries to /graphql endpoint

Done.

4. add country to locations.graphql.schema as a representative of country information

Done. Please, check out the countries service.

5. add functionality to use limit and skip as a parameters to fetch data through /graphql endpoint

Done. Please, take a look at graphql.resolvers.queries.js.

6. If you run the following query, location will always be null. Please figure out why this is happening. After you found out how this happens, please describe the reason and how you found the issue.

    apartments(owner: $owner) {  
            items {  
              location {  
                title  
              }  
            }  
          }  
        }

This query is working now.

I had to go through dozens of publications on StackOverflow to solve this. It is in this post that I found the solution. The code below had query spelled in lowercase, whereas it needed to be capitalized, like this:

location: apartment => {
        return Locations.find({ **Query**: { _id: apartment.location } }).then(result => result);
      }

To be honest with you this looks like a bug to me. Other than this assumption I really have no idea why capitalized Query happened to solve the problem. I also assume we'd be better off using MongoDB's automatically created ObjectIds instead of plain strings for _ids in our collections.

7. I took the liberty to see if I could create a GraphQL search functionality. So I:

• modified the schema
• added this package feathers-mongodb-fuzzy-search to implement Mongo's native search.
• added text index for the title field in the locations, apartments and countries models.

You may use the query example below to test it.

{
  search(title: "Studio") {
 		locations{
      title
    }
    apartments{
      title
    }
    countries{
      title
    }
    
  }
}

Background information

###run

• edit /config/default.json
• provide mongodb connection path [mongodb://localhost:27017/assignment by default]
• npm install
• npm start

###current endpoints

• /users
• /apartments
• /locations
• /graphql
• /graphiql

##What to do - for backend engineers

1. add new endpoint /countries which should represent the data from the countries collection
2. add countries to /graphql endpoint
3. add country to locations.graphql.schema as a representative of country information
4. add functionality to use limit and skip as a parameters to fetch data through /graphql endpoint
5. If you run the following query, location will always be null. Please figure out why this is happening. After you found out how this happens, please describe the reason and how you found the issue.

      apartments(owner: $owner) {  
        items {  
          location {  
            title  
          }  
        }  
      }  
    }