Re: Odd array structure when using Model->query()

Try adding the model alias:

AND (Location.classification_id = $classification_id)

On Tue, Oct 16, 2012 at 7:42 PM, bmcelhany <bmcelhany@gmail.com> wrote:
> Hello,
>
> I have a model (Location) that points to a view (locations) in MySQL. The
> view contains address, zip code and latitude/longitude data that I use to
> calculate the distance between two locations (or find all locations within a
> given radius from a particular zip code).
>
> In my model, I have a function that takes 3 parameters: a zip code, a
> classification id and a specialty id. Using those three parameters, I
> construct a sql string ($sql), call $this->query($sql) and return the
> resulting array. The reason I simply don't call the model's standard
> $this->find() method is because, in addition to the fields from the database
> view, I need to perform a huge and ugly calculation to determine the number
> of miles each record's zip code is from the zip code passed in to the
> function. I'm using this as a virtual field in the model called "Miles".
>
> At any rate, this is mostly working but I'm noticing some strange behavior
> with how the resulting array is structured. Any time I add something to the
> WHERE clause of my sql statement and have an ORDER BY clause in the sql
> statement, those items are returned in an array that is separate from my
> expected Location array. If I don't add any fields to my WHERE clause,
> everything is returned as expected (just with no filters applied to the
> result set). Oddly, if I remove the ORDER BY clause everything works fine
> too. It's only when I ORDER BY my Miles virtual field AND have stuff in my
> WHERE clause that things start to break.
>
> I should note too, that when I look at the actual query that is being run
> and copy it into MySQL, it runs fine and returns the correct results.
>
> Here is the relavant code ($lat_lon['lat'] and $lat_lon['lon'] are from a
> local array and are returning the correct numbers):
>
> -----------------------------------------------------------------
>
> $this->virtualFields['Miles'] = 0;
>
> $sql = "SELECT "
> ."Location.classification_id, "
> ."Location.classification_name, "
> ."Location.first_name, "
> ."Location.last_name, "
> ."Location.suffix, "
> ."Location.title, "
> ."Location.specialty_id, "
> ."Location.specialty_name, "
> ."Location.specialty_ame, "
> ."Location.specialty_pr4, "
> ."Location.address_id, "
> ."Location.address, "
> ."Location.city, "
> ."Location.state, "
> ."Location.zip, "
> ."Location.address_ame, "
> ."Location.address_pr4, "
> ."Location.zip_code, "
> ."Location.lat, "
> ."Location.lon, "
> ."(3956 * 2 * ATAN2(SQRT(POW(SIN((RADIANS(".$lat_lon['lat'].") - "
> .'RADIANS(Location.lat)) / 2), 2) + COS(RADIANS(Location.lat)) * '
> ."COS(RADIANS(".$lat_lon['lat'].")) * POW(SIN((RADIANS(".$lat_lon['lon'].")
> - "
> ."RADIANS(Location.lon)) / 2), 2)), SQRT(1 -
> POW(SIN((RADIANS(".$lat_lon['lat'].") - "
> ."RADIANS(Location.lat)) / 2), 2) + COS(RADIANS(Location.lat)) * "
> ."COS(RADIANS(".$lat_lon['lat'].")) * POW(SIN((RADIANS(".$lat_lon['lon'].")
> - "
> ."RADIANS(Location.lon)) / 2), 2)))) AS Location__Miles "
> ."FROM locations AS Location "
> ."WHERE "
> ."(lat BETWEEN ROUND({$lat_lon['lat']} - (25 / 69.172), 4) "
> ."AND ROUND({$lat_lon['lat']} + (25 / 69.172), 4) "
> ."AND lon BETWEEN ROUND({$this->lon} - ABS(25 / COS({$lat_lon['lat']}) *
> 69.172)) "
> ."AND ROUND({$lat_lon['lon']} + ABS(25 / COS({$lat_lon['lat']}) * 69.172)) "
> ."AND 3956 * 2 * ATAN2(SQRT(POW(SIN((RADIANS({$lat_lon['lat']}) - "
> ."RADIANS(Location.lat)) / 2), 2) + COS(RADIANS(Location.lat)) * "
> ."COS(RADIANS({$lat_lon['lat']})) * POW(SIN((RADIANS({$lat_lon['lon']}) - "
> ."RADIANS(Location.lon)) / 2), 2)), SQRT(1 -
> POW(SIN((RADIANS({$lat_lon['lat']}) - "
> ."RADIANS(Location.lat)) / 2), 2) + COS(RADIANS(Location.lat)) * "
> ."COS(RADIANS({$lat_lon['lat']})) * POW(SIN((RADIANS({$lat_lon['lon']}) - "
> ."RADIANS(Location.lon)) / 2), 2))) <= $miles "
> ."AND 3956 * 2 * ATAN2(SQRT(POW(SIN((RADIANS({$lat_lon['lat']}) - "
> ."RADIANS(Location.lat)) / 2), 2) + COS(RADIANS(Location.lat)) * "
> ."COS(RADIANS({$lat_lon['lat']})) * POW(SIN((RADIANS({$lat_lon['lon']}) - "
> ."RADIANS(Location.lon)) / 2), 2)), SQRT(1 -
> POW(SIN((RADIANS({$lat_lon['lat']}) - "
> ."RADIANS(Location.lat)) / 2), 2) + COS(RADIANS(Location.lat)) * "
> ."COS(RADIANS({$lat_lon['lat']})) * POW(SIN((RADIANS({$lat_lon['lon']}) - "
> ."RADIANS(Location.lon)) / 2), 2))) >= 0) "
> ."AND (classification_id = $classification_id) ";
>
> if(!empty($specialty_id)) {
> $sql .= "AND (specialty_id = $specialty_id) ";
> $criteria['Specialty'] = $specialty_name;
> }
> $sql .= "ORDER BY Location__Miles ASC";
> $foundData = $this->query($sql);
> echo pr($foundData);
>
> -----------------------------------------------------------------
> The $foundData array looks like:
>
> Array
> (
> [0] => Array
> (
> [classifications] => Array
> (
> [classification_id] => 1
> [classification_name] => AME
> )
>
> [Location] => Array
> (
> [first_name] => John
> [last_name] => Doe
> [suffix] =>
> [title] => PHD
> [specialty_ame] => 1
> [specialty_pr4] => 1
> [address_id] => 32
> [address] => 123 Main St. Suite 100
> [city] => Sacramento
> [state] => CA
> [zip] => 94203
> [address_ame] => 1
> [address_pr4] => 1
> [zip_code] => 94203
> [lat] => 38.5844
> [lon] => -121.494
> [Miles] => 0.00017830548973979952
> )
> .
> .
> .
> But SHOULD look like:
>
> Array
> (
> [0] => Array
> (
> [Location] => Array
> (
> [classification_id] => 1
> [classification_name] => AME
> [first_name] => John
> [last_name] => Doe
> [suffix] =>
> [title] => PHD
> [specialty_ame] => 1
> [specialty_pr4] => 1
> [address_id] => 32
> [address] => 123 Main St. Suite 100
> [city] => Sacramento
> [state] => CA
> [zip] => 94203
> [address_ame] => 1
> [address_pr4] => 1
> [zip_code] => 94203
> [lat] => 38.5844
> [lon] => -121.494
> [Miles] => 0.00017830548973979952
> )
> .
> .
> .
>
> If I comment out the line that reads: ."AND (classification_id =
> $classification_id) "; it works fine (no classification_id filter, but the
> array is structured correctly). Also, if I comment out the $sql .= "ORDER BY
> Location__Miles ASC"; line it works fine (filters are all in place and
> things are structured correctly, but I need the results ordered by
> distance). I just can't use them together.
>
> It seems like this should just work...what am I missing here? Any help is
> greatly appreciated!!!
>
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