Created
July 17, 2018 13:49
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static scopeNearBy (query, latitude, longitude, distance) { | |
const haversine = `(6371 * acos(cos(radians(${latitude})) | |
* cos(radians(latitude)) | |
* cos(radians(longitude) | |
- radians(${longitude})) | |
+ sin(radians(${latitude})) | |
* sin(radians(latitude))))` | |
return query | |
.select('*', Database.raw(`${haversine} as distance`)) | |
.whereRaw(`${haversine} < ${distance}`) | |
} |
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As linhas 3, 4 e 7, as variáveis latitude e longitude não estão circundadas por ${ }.
Parece que há um bug neste código, pois, eu usei console.log(haversine) e me retornou isto:
(6371 * acos(cos(radians(-27.200768))
* cos(radians(latitude))
* cos(radians(longitude)
- radians(-49.624018))
+ sin(radians(-27.200768))
* sin(radians(latitude))))
Então, quando, eu coloco as variáveis latitude e longitude entre ${ }, conforme o código abaixo:
(6371 * acos(cos(radians(${latitude})) * cos(radians(${latitude})) * cos(radians(${longitude}) - radians(${longitude})) + sin(radians(${latitude})) * sin(radians(${latitude}))))
Ao realizar console.log(haversine), retorna isto:
(6371 * acos(cos(radians(-27.200768))
* cos(radians(-27.200768))
* cos(radians(-49.624018)
- radians(-49.624018))
+ sin(radians(-27.200768))
* sin(radians(-27.200768))))
Creio eu, que as linhas 3, 4 e 7 estão incorretas.