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PORails 3 SQL query select with joins
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  1. PORails 3 SQL query select with joins
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    copied!<p>I have a problem with select fonction and joins.</p> <p>here is my current query.</p> <pre><code>@search = Building.joins('INNER JOIN "floors" ON "floors"."building_id" = "buildings"."id" INNER JOIN "spaces" ON "spaces".floor_id = "floors".id') </code></pre> <p>but i want to have more option in my select to use floors.number, space.number i tried this</p> <pre><code>@search = Building.select('buildings.name, floors.number, spaces.number).joins('INNER JOIN "floors" ON "floors"."building_id" = "buildings"."id" INNER JOIN "spaces" ON "spaces".floor_id = "floors".id') </code></pre> <p>in my view i got erreor.. here is my view</p> <pre><code>&lt;% for b in @building do %&gt; &lt;div style='width:100%;margin-left:auto;margin-right:auto;margin-top:5px;'&gt; &lt;div style="float:left;width:50%"&gt;&lt;%= b.name %&gt;&lt;/div&gt; &lt;div&gt;&lt;%= link_to 'view', building_path(b) %&gt;&lt;/div&gt; &lt;/div&gt; &lt;% end %&gt; </code></pre> <p>this is the error i get</p> <pre><code>ActionController::RoutingError in Search_engine#show Showing /Users/stephanebaribeau/Sites/cadifice/app/views/search_engine/show.html.erb where line #21 raised: No route matches {:action=&gt;"show", :controller=&gt;"buildings", :id=&gt;#&lt;Building name: "gigi"&gt;} Extracted source (around line #21): 18: &lt;div style='width:100%;margin-left:auto;margin-right:auto;margin-top:5px;'&gt; 19: 20: &lt;div style="float:left;width:50%"&gt;&lt;%= b.name %&gt;&lt;/div&gt; 21: &lt;div&gt;&lt;%= link_to 'view', building_path(b) %&gt;&lt;/div&gt; 22: 23: &lt;/div&gt; 24: </code></pre> <p>thanks</p> <p>After adding building.id, floors.id and spaces.id on my select i try to show the floors.number and spaces.number</p> <pre><code>&lt;%= debug @building %&gt; </code></pre> <p>give me </p> <pre><code>[#&lt;Building id: 9, name: "234234"&gt;] </code></pre> <p>i dont know why i have only 2 elements, maybe it's because the select are on a Building.select?</p> <p>thanks</p> <p>-- Update 14/09</p> <p>Here is my new controller</p> <pre><code> @search = Building.select('buildings.id, buildings.slug, floors.id, spaces.id, buildings.name, floors.number, spaces.number').joins('INNER JOIN floors ON floors.building_id = buildings.id INNER JOIN spaces ON spaces.floor_id = floors.id') @search = @search.where("buildings.name like '%#{params[:building_name]}%'") if !params[:building_name].blank? #@search = @search.where("buildings.name like ?", params[:building_name]) if !params[:building_name].blank? if params[:space_type].present? @search = @search.where("spaces.space_type_id = ?", params[:space_type][:space_type_id]) if !params[:space_type][:space_type_id].blank? end @search = @search.where("floors.min_net_rent &gt;= #{params[:floor_min_rent]}") if !params[:floor_min_rent].blank? @search = @search.where("floors.max_net_rent &lt;= #{params[:floor_max_rent]}") if !params[:floor_max_rent].blank? @building = @search </code></pre> <p>The problem i have now is what debug give me. only 2 fields from the building. Is it because of the Building.select? How can i get all inside my selectfield?</p> <p>Thanks.</p>
 

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