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POWith ActiveRecord, how do I write a where statement that only includes objects whose values aren't blank/nil?
 

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  1. POWith ActiveRecord, how do I write a where statement that only includes objects whose values aren't blank/nil?
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    <p>The title isn't too explanatory, but basically I have a Game model, and each game has_many Stats. These stats also belong_to an Athlete, who has_many Games. Each Stat has a Stat_Type, and I'm collecting the StatTypes that I need in the following code:</p> <pre><code>@games = Athlete.first.games unless @games.blank? @sport_position_stat_types = @games.first.stats.not_calculated.order("id ASC").collect(&amp;:stat_type) end </code></pre> <p>This works fine, but I need a way to remove any stat_type in this list where there are NO stats of that stat_type in ANY of the games that have a value.</p> <p>Basically, I have all the stat_types I need right now, but I need to limit @sport_position_stat_types to only stat_types that have stats with values in that athlete's games collection.</p> <p>So here's what I need:</p> <pre><code>Athlete --&gt;Games --&gt;Stats --&gt;Stat_Types (I need all of these as long as there is at least ONE stat of that stat_type that is in the above Athlete's Games, and doesn't have a nil Value column--aka it has a value) </code></pre> <p>I hope this explains it well enough. Any help is appreciated!</p> <p>EDIT::</p> <p>This is what is returned (@sport_position_stat_types):</p> <pre><code>[#&lt;StatType id: 270, sport_id: 6, name: "Return Touchdowns", unit: "", created_at: "2012-12-31 19:20:37", updated_at: "2013-04-29 15:19:59", lower_is_better: false, sport_position_id: 5, display_as_decimal: false, game: true, placement: 28, stat_type_category_id: 1, abbreviation: nil, calculated: false&gt;, #&lt;StatType id: 269, sport_id: 6, name: "Receiving Touchdowns", unit: "", created_at: "2012- 12-31 19:20:10", updated_at: "2013-04-29 15:19:59", lower_is_better: false, sport_position_id: 5, display_as_decimal: false, game: true, placement: 29, stat_type_category_id: 1, abbreviation: nil, calculated: false&gt;, #&lt;StatType id: 268, sport_id: 6, name: "Yards Per Catch", unit: "", created_at: "2012-12-31 19:18:33", updated_at: "2013-04-29 15:19:59", lower_is_better: false, sport_position_id: 5, display_as_decimal: true, game: true, placement: 30, stat_type_category_id: 1, abbreviation: nil, calculated: false&gt;, #&lt;StatType id: 267, sport_id: 6, name: "Receiving Yards", unit: "", created_at: "2012-12-31 19:18:00", updated_at: "2013-04-29 15:19:59", lower_is_better: false, sport_position_id: 5, display_as_decimal: false, game: true, placement: 31, stat_type_category_id: 1, abbreviation: nil, calculated: false&gt;, #&lt;StatType id: 266, sport_id: 6, name: "Catches", unit: "", created_at: "2012-12-31 19:16:24", updated_at: "2013-04-29 15:19:59", lower_is_better: false, sport_position_id: 5, display_as_decimal: false, game: true, placement: 32, stat_type_category_id: 1, abbreviation: nil, calculated: false&gt;, #&lt;StatType id: 265, sport_id: 6, name: "Fumbles", unit: "", created_at: "2012-12-31 19:09:41", updated_at: "2013-04-29 15:19:59", lower_is_better: true, sport_position_id: 5, display_as_decimal: false, game: true, placement: 33, stat_type_category_id: 1, abbreviation: nil, calculated: false&gt;, #&lt;StatType id: 264, sport_id: 6, name: "Rushing Touchdowns", unit: "", created_at: "2012-12- 31 19:09:10", updated_at: "2013-08-20 15:48:48", lower_is_better: false, sport_position_id: 5, display_as_decimal: false, game: true, placement: 34, stat_type_category_id: 4, abbreviation: nil, calculated: false&gt;, #&lt;StatType id: 263, sport_id: 6, name: "Rush Long", unit: "", created_at: "2012-12-31 19:08:42", updated_at: "2013-08-20 15:48:48", lower_is_better: false, sport_position_id: 5, display_as_decimal: false, game: true, placement: 35, stat_type_category_id: 4, abbreviation: nil, calculated: false&gt;, #&lt;StatType id: 262, sport_id: 6, name: "Rush Yards per Carry", unit: "yard", created_at: "2012-12-31 19:06:49", updated_at: "2013-08-20 15:48:48", lower_is_better: false, sport_position_id: 5, display_as_decimal: true, game: true, placement: 36, stat_type_category_id: 4, abbreviation: nil, calculated: false&gt;, #&lt;StatType id: 261, sport_id: 6, name: "Rush Yards", unit: "yard", created_at: "2012-12-31 19:06:01", updated_at: "2013-08-20 15:48:47", lower_is_better: false, sport_position_id: 5, display_as_decimal: false, game: true, placement: 37, stat_type_category_id: 4, abbreviation: nil, calculated: false&gt;, #&lt;StatType id: 260, sport_id: 6, name: "Rushes", unit: "", created_at: "2012-12-31 19:05:24", updated_at: "2013-08-20 15:48:48", lower_is_better: false, sport_position_id: 5, display_as_decimal: false, game: true, placement: 38, stat_type_category_id: 4, abbreviation: nil, calculated: false&gt;] </code></pre>
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    1. UStrevorhinesley
    1. UStrevorhinesley
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    1. This table or related slice is empty.
    1. COwhat's being returned with this query?
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      1. POWith ActiveRecord, how do I write a where statement that only includes objects whose values aren't blank/nil?
      1. USdax
    2. COAn array of StatTypes
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      1. POWith ActiveRecord, how do I write a where statement that only includes objects whose values aren't blank/nil?
      1. UStrevorhinesley
    3. COcould you post an example?
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      1. POWith ActiveRecord, how do I write a where statement that only includes objects whose values aren't blank/nil?
      1. USdax
 

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