What changed?

Confirms that the required related fields (survey, region and item) are included
Checks for any existing entries with the same values for survey, region, subregion and item
Throws an error if duplicate entry is found and does not create the entry.

Closes #53

How can you test this?

Currently there are no automated tests. Best way to test is by sending post requests via an http client (e.g. Bruno, Postman, Insomnia).

1. If your local db is empty, using the Content Manager, add several entries in the Survey, Region, Subregion and Item collections. Use the Id's from these items in the "connect" parts of the body data listed below.

2. Use the following api for the remaining steps
   Request type: POST
   Request url: http://localhost:1337/api/needs?populate=*

3. Create a post body that successfully creates an entry.

{
  "data": {
    "amount": 1,
    "survey": {
      "disconnect": [],
      "connect":[1]
    },
    "region": {
      "connect": [1]
    },
    "item": {
        "connect": [1]
    }
  }
}

4. Send that same post again and confirm that it returns an error and does not create a duplicate entry

5. Send a post request that is missing one or more required fields. Confirm that this returns an error and does not create an entry. For example, this one does not have a survey field:

   {
     "data": {
       "amount": 1,
       "region": {
         "connect": [1]
       },
       "item": {
           "connect": [1]
       }
     }
   }

6. Send a post that has invalid ids for related data. Confirm that this returns an error and does not create an entry

   {
     "data": {
       "amount": 1,
       "survey": {
         "disconnect": [],
         "connect":[999]
       },
       "region": {
         "connect": [999]
       },
       "item": {
           "connect": [999]
       }
     }
   }