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    <p>I think you may have mistyped the query a bit. <code>"params[:projectid] = ?"</code> shouldn't be a valid query condition under any circumstances.</p> <p>In any case, you could do some sort of conditional statement:</p> <pre><code>if params[:project_id].blank? @conversations = current_user.conversations.limit(10) else @conversations = current_user.conversations.where("project_id = ?", params[:project_id]).limit(10) end </code></pre> <p>Although, I'd probably prefer something like this:</p> <pre><code>@conversations = current_user.conversations.limit(10) @converstaions.where("project_id = ?", params[:project_id]) unless params[:project_id].blank? </code></pre> <p>Sidenotes:</p> <ol> <li>You don't have to use <code>.find(:all)</code>. Rails will automatically execute the query when the resultset is required (such as when you do <code>@conversations.each</code>).</li> <li>Wherever possible, try to adhere to Rails' snakecasing naming scheme (eg. <code>project_id</code> as opposed to <code>projectid</code>). You'll save yourself and collaborators a lot of headaches in the long run.</li> </ol> <p>Thanks but if the where query has lets say 3 params, project_id, project_status, ... for example, then the unless idea won't work. I'm shocked that Rails doesn't have a better way to handle conditional query params</p> <p>EDIT: If you have multiple params that could be a part of the query, consider the fact that <code>where</code> takes a hash as its argument. With that, you can easily build a parameter hash dynamically, and pass it to <code>where</code>. Something like this, maybe:</p> <pre><code>conditions = [:project_id, :project_status, :something_else].inject({}) do |hsh, field| hsh[field] = params[field] unless params[field].blank? hsh end @conversations = current_user.conversations.where(conditions).limit(10) </code></pre> <p>In the above case, you'd loop over all fields in the array, and add each one of them to the resulting hash <em>unless</em> it's blank. Then, you pass the hash to the where function, and everything's fine and dandy.</p>
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    1. COThanks but if the where query has lets say 3 params, project_id, project_status, ... for example, then the unless idea won't work. I'm shocked that Rails doesn't have a better way to handle conditional query params
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      1. USAnApprentice
    2. CO@AnApprentice: See my edited answer for how you could handle that.
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    3. COLast option worked like a charm... Can we call this magic of Ruby? This is great and extremely functional!
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