query_filter brings convenience and shortens the boilterplate of ecto queries

Common filters available include:

• preload - Preloads fields onto the query results
• start_date - Query for items inserted after this date
• end_date - Query for items inserted before this date
• before - Get items with IDs before this value
• after - Get items with IDs after this value
• ids - Get items with a list of ids
• first - Gets the first n items
• last - Gets the last n items
• limit - Gets the first n items
• offset - Offsets limit by n items
• search - Warning: This requires schemas using this to have a &by_search(query, val) function

You are also able to filter on any natural field of a model, as well as use

• gte/gt
• lte/lt
• like/ilike
• is_nil/not(is_nil)

query_filter(User, %{name: %{ilike: "steve"}})
query_filter(User, %{name: %{ilike: "steve"}}, :last_name, :asc)
query_filter(User, %{name: %{age: %{gte: 18, lte: 30}}})
query_filter(User, %{name: %{is_banned: %{!=: nil}}})
query_filter(User, %{name: %{is_banned: %{==: nil}}})

my_query = query_filter(User, %{name: "Billy"})
query_filter(my_query, %{last_name: "Joe"})