Drizzle Team•9mo ago

How to call a method based on a condition?

I am running two almost similar queries based on a condition. In one of the condition I'm calling the where method and in the other one I'm not. How can I reduce duplicacy by having just one query that works for both conditions? Basically calling the where method only if a condition holds.

if (id === -1)
    chunk = await db
        .select({
            id: posts.id,
            content: posts.content,
        })
        .from(posts)
        .orderBy(desc(posts.id))
        .limit(6);
else
    chunk = await db
        .select({
            id: posts.id,
            content: posts.content,
        })
        .from(posts)
        .where(lt(posts.id, id) && eq(posts.hidden, hidden))
        .orderBy(desc(posts.id))
        .limit(6);

if (id === -1)
    chunk = await db
        .select({
            id: posts.id,
            content: posts.content,
        })
        .from(posts)
        .orderBy(desc(posts.id))
        .limit(6);
else
    chunk = await db
        .select({
            id: posts.id,
            content: posts.content,
        })
        .from(posts)
        .where(lt(posts.id, id) && eq(posts.hidden, hidden))
        .orderBy(desc(posts.id))
        .limit(6);

1 Reply

francis•9mo ago

uh you can build the query in progress i.e. let query = <first bit>; if (condition) query = query.where....; await query.<last bit>

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How to call a method based on a condition?