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<?php |
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namespace LaravelSpatial\Eloquent; |
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use GeoJson\GeoJson; |
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use GeoJSON\Geometry\Geometry; |
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use geoPHP\geoPHP; |
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use Illuminate\Database\Eloquent\Builder as EloquentBuilder; |
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use Illuminate\Database\MySqlConnection; |
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use Illuminate\Database\PostgresConnection; |
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use LaravelSpatial\Exceptions\SpatialFieldsNotDefinedException; |
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use LaravelSpatial\Exceptions\UnknownSpatialRelationFunction; |
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/** |
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* Trait SpatialTrait. |
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* |
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* @property $attributes array |
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* @method static distance($geometryColumn, $geometry, $distance) |
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* @method static distanceExcludingSelf($geometryColumn, $geometry, $distance) |
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* @method static distanceSphere($geometryColumn, $geometry, $distance) |
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* @method static distanceSphereExcludingSelf($geometryColumn, $geometry, $distance) |
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* @method static comparison($geometryColumn, $geometry, $relationship) |
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* @method static within($geometryColumn, $polygon) |
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* @method static crosses($geometryColumn, $geometry) |
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* @method static contains($geometryColumn, $geometry) |
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* @method static disjoint($geometryColumn, $geometry) |
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* @method static equals($geometryColumn, $geometry) |
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* @method static intersects($geometryColumn, $geometry) |
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* @method static overlaps($geometryColumn, $geometry) |
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* @method static doesTouch($geometryColumn, $geometry) |
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*/ |
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trait SpatialTrait |
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{ |
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/* |
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* The attributes that are spatial representations. |
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* To use this Trait, add the following array to the model class |
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* |
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* @var array |
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* |
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* protected $spatialFields = []; |
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*/ |
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public $geometries = []; |
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protected $stRelations = [ |
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'Within', |
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'Crosses', |
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'Contains', |
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'Disjoint', |
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'Equals', |
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'Intersects', |
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'Overlaps', |
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'Touches', |
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]; |
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/** |
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* Create a new Eloquent query builder for the model. |
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* |
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* @param \Illuminate\Database\Query\Builder $query |
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* @return \LaravelSpatial\Eloquent\Builder |
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*/ |
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public function newEloquentBuilder($query) |
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{ |
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return new Builder($query); |
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} |
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public function setRawAttributes(array $attributes, $sync = false) |
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{ |
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$spatial_fields = $this->getSpatialFields(); |
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foreach ($attributes as $attribute => &$value) { |
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if (in_array($attribute, $spatial_fields) && is_string($value) && strlen($value) >= 15) { |
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// MySQL adds 4 NULL bytes at the start of the binary |
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if ($this->getConnection() instanceof MySqlConnection && substr($value, 0, 4) == "\0\0\0\0") { |
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$value = substr($value, 4); |
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} elseif ($this->getConnection() instanceof PostgresConnection) { |
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$value = pack('H*', $value); |
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} |
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try { |
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$value = GeoJson::jsonUnserialize(json_decode(geoPHP::load($value, 'wkb')->out('json'))); |
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} catch (\Exception $e) { |
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throw new \Exception("Can't parse WKB {$value}: {$e->getMessage()}", $e->getCode(), $e); |
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} |
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} |
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} |
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parent::setRawAttributes($attributes, $sync); |
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} |
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public function getSpatialFields() |
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{ |
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if (property_exists($this, 'spatialFields') && !empty($this->spatialFields)) { |
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return $this->spatialFields; |
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} else { |
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throw new SpatialFieldsNotDefinedException(__CLASS__ . ' has to define $spatialFields'); |
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} |
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} |
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protected function toWkt(Geometry $value) |
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{ |
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return ($this->getConnection() instanceof PostgresConnection ? 'SRID=4326;' : '') . |
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geoPHP::load(json_decode(json_encode($value->jsonSerialize()), false), 'json')->out('wkt'); |
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} |
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protected function performInsert(EloquentBuilder $query, array $options = []) |
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{ |
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foreach ($this->attributes as $key => $value) { |
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if ($value instanceof Geometry && $this->isColumnAllowed($key)) { |
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$this->geometries[$key] = $value; // Preserve the geometry objects prior to the insert |
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$this->attributes[$key] = $this->getConnection()->raw("ST_GeomFromText('{$this->toWkt($value)}')"); |
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} |
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} |
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$insert = parent::performInsert($query, $options); |
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foreach ($this->geometries as $key => $value) { |
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$this->attributes[$key] = $value; // Retrieve the geometry objects so they can be used in the model |
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} |
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return $insert; // Return the result of the parent insert |
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} |
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public function isColumnAllowed($geometryColumn) |
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{ |
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if (!in_array($geometryColumn, $this->getSpatialFields())) { |
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throw new SpatialFieldsNotDefinedException(); |
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} |
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return true; |
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} |
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public function scopeDistance($query, $geometryColumn, $geometry, $distance) |
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{ |
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if ($this->isColumnAllowed($geometryColumn)) { |
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$geometryColumn .= $this->getConnection() instanceof PostgresConnection ? '::geometry' : ''; |
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$query->whereRaw("ST_Distance({$geometryColumn}, ST_GeomFromText(?)) <= ?", [ |
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$this->toWkt($geometry), |
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$distance, |
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]); |
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} |
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return $query; |
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} |
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public function scopeDistanceExcludingSelf($query, $geometryColumn, $geometry, $distance) |
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{ |
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if ($this->isColumnAllowed($geometryColumn)) { |
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$query = $this->scopeDistance($query, $geometryColumn, $geometry, $distance); |
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$geometryColumn .= $this->getConnection() instanceof PostgresConnection ? '::geometry' : ''; |
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$query->whereRaw("ST_Distance({$geometryColumn}, ST_GeomFromText(?)) != 0", [ |
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$this->toWkt($geometry), |
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]); |
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} |
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return $query; |
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} |
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public function scopeDistanceValue($query, $geometryColumn, $geometry) |
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{ |
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if ($this->isColumnAllowed($geometryColumn)) { |
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$columns = $query->getQuery()->columns; |
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if (!$columns) { |
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$query->select('*'); |
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} |
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$geometryColumn .= $this->getConnection() instanceof PostgresConnection ? '::geometry' : ''; |
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$query->selectRaw("ST_Distance({$geometryColumn}, ST_GeomFromText(?)) as distance", [ |
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$this->toWkt($geometry), |
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]); |
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} |
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return $query; |
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} |
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public function scopeDistanceSphere($query, $geometryColumn, $geometry, $distance) |
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{ |
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$distFunc = $this->getConnection() instanceof PostgresConnection ? 'ST_DistanceSphere' : 'ST_Distance_Sphere'; |
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if ($this->isColumnAllowed($geometryColumn)) { |
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$geometryColumn .= $this->getConnection() instanceof PostgresConnection ? '::geometry' : ''; |
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$query->whereRaw("{$distFunc}({$geometryColumn}, ST_GeomFromText(?)) <= ?", [ |
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$this->toWkt($geometry), |
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$distance, |
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]); |
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} |
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return $query; |
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} |
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public function scopeDistanceSphereExcludingSelf($query, $geometryColumn, $geometry, $distance) |
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{ |
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$distFunc = $this->getConnection() instanceof PostgresConnection ? 'ST_DistanceSphere' : 'ST_Distance_Sphere'; |
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if ($this->isColumnAllowed($geometryColumn)) { |
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$query = $this->scopeDistanceSphere($query, $geometryColumn, $geometry, $distance); |
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$geometryColumn .= $this->getConnection() instanceof PostgresConnection ? '::geometry' : ''; |
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$query->whereRaw("{$distFunc}({$geometryColumn}, ST_GeomFromText(?)) != 0", [ |
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$this->toWkt($geometry), |
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]); |
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} |
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return $query; |
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} |
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public function scopeDistanceSphereValue($query, $geometryColumn, $geometry) |
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{ |
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$distFunc = $this->getConnection() instanceof PostgresConnection ? 'ST_DistanceSphere' : 'ST_Distance_Sphere'; |
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if ($this->isColumnAllowed($geometryColumn)) { |
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$columns = $query->getQuery()->columns; |
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if (!$columns) { |
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$query->select('*'); |
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} |
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$geometryColumn .= $this->getConnection() instanceof PostgresConnection ? '::geometry' : ''; |
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$query->selectRaw("{$distFunc}({$geometryColumn}, ST_GeomFromText(?)) as distance", [ |
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$this->toWkt($geometry), |
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]); |
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} |
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return $query; |
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} |
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public function scopeComparison($query, $geometryColumn, $geometry, $relationship) |
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{ |
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if ($this->isColumnAllowed($geometryColumn)) { |
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$relationship = ucfirst(strtolower($relationship)); |
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if (!in_array($relationship, $this->stRelations)) { |
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throw new UnknownSpatialRelationFunction($relationship); |
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} |
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$geometryColumn .= $this->getConnection() instanceof PostgresConnection ? '::geometry' : ''; |
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$query->whereRaw("ST_{$relationship}(`{$geometryColumn}`, ST_GeomFromText(?))", [ |
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$this->toWkt($geometry), |
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]); |
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} |
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return $query; |
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} |
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public function scopeWithin($query, $geometryColumn, $polygon) |
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{ |
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return $this->scopeComparison($query, $geometryColumn, $polygon, 'within'); |
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} |
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public function scopeCrosses($query, $geometryColumn, $geometry) |
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{ |
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return $this->scopeComparison($query, $geometryColumn, $geometry, 'crosses'); |
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} |
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public function scopeContains($query, $geometryColumn, $geometry) |
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{ |
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return $this->scopeComparison($query, $geometryColumn, $geometry, 'contains'); |
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} |
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public function scopeDisjoint($query, $geometryColumn, $geometry) |
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{ |
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return $this->scopeComparison($query, $geometryColumn, $geometry, 'disjoint'); |
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} |
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public function scopeEquals($query, $geometryColumn, $geometry) |
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{ |
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return $this->scopeComparison($query, $geometryColumn, $geometry, 'equals'); |
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} |
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public function scopeIntersects($query, $geometryColumn, $geometry) |
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{ |
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return $this->scopeComparison($query, $geometryColumn, $geometry, 'intersects'); |
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} |
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public function scopeOverlaps($query, $geometryColumn, $geometry) |
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{ |
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return $this->scopeComparison($query, $geometryColumn, $geometry, 'overlaps'); |
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} |
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public function scopeDoesTouch($query, $geometryColumn, $geometry) |
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{ |
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return $this->scopeComparison($query, $geometryColumn, $geometry, 'touches'); |
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} |
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} |
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