LoopBack 3.0: where filter not returning results from REST API - rest

Question

I have a LoopBack API with a single simple model like this:
{
"name": "Establishment",
"base": "PersistedModel",
"idInjection": true,
"options": {
"validateUpsert": true
},
"properties": {
"Distance": {
"type": "number"
},
"EstablishmentId": {
"type": "number"
},
"EstablishmentType": {
"type": "string"
},
"Location": {
"type": "string"
},
"MinCost": {
"type": "number"
},
"Name": {
"type": "string"
},
"Stars": {
"type": "number"
},
"UserRating": {
"type": "number"
},
"UserRatingTitle": {
"type": "string"
},
"UserRatingCount": {
"type": "number"
},
"ImageUrl": {
"type": "string"
},
"ThumbnailUrl": {
"type": "string"
}
},
"validations": [],
"relations": {},
"acls": [],
"methods": {}
}
A simple call to http://localhost:3000/api/Establishments returns all of the results, as expected; but a call to http://localhost:3000/api/Establishments?filter[where][distance][gt]=30 yields no results at all: an empty array.
There are lots of Establishments with a Distance greater than 30; and indeed using the where filter on other properties also results in an empty array. What could I be missing?

Answer 1

As I mentioned in the comment, it is case-sensitive and I varified it on my app to be certain about it.
it should be :
http://localhost:3000/api/Establishments?filter[where][Distance][gt]=30
or you can try with this format :
http://localhost:3000/api/Establishments?filter={"where":{"Distance":{"gt":30}}}