I usually resort to using Arel for more complex queries; not as straight
forward at first, but very powerful I find.
On Thu, Oct 10, 2019 at 10:15 AM Kevin Deisz <kevin.de...@gmail.com> wrote:
> For more complex queries, so syntactic sugar can make this a little more
> palatable:
>
> Author.some.complex.scopes.then { |relation| relation.where(first_name:
> 'John').or(relation.where(last_name: 'Smith')) }.more.complex.scopes
>
> Even better is just extracting that to its own named scope,
>
> scope :named, ->(first_name, last_name) { where(first_name:
> first_name).or(where(last_name: 'Smith')) }
> Author.some.complex.scopes.named(first_name, last_name).more.complex.scopes
>
> I get that that doesn't solve your concern with the API, but it makes it
> more readable for sure.
>
> On Thu, Oct 10, 2019 at 9:03 AM Rolandas Barysas <r...@atomicflow.org>
> wrote:
>
>> I think the idea of making `or` simpler is welcome, but I'm not fond of
>> this implementation. Passing multiple parameters implies that we're using
>> them together (like `.not()`), but in this case it implicitly uses
>> parameters separately (using as an or, that is).
>>
>> I think something like this would be more readable:
>>
>> Author.where(first_name: 'John').or(last_name: 'Smith')
>>
>> Right now in your particular case you can write like this, though I
>> assume you're trying to avoid using SQL at all:
>>
>> Author.where('first_name = ? OR last_name = ?', 'John', 'Smith')
>>
>> On Thu, Oct 10, 2019, at 11:52, Vicente Romero Calero wrote:
>>
>> Consider the following simple query:
>>
>> SELECT * FROM authors WHERE first_name = 'John' OR last_name = 'Smith'
>>
>> With ActiveRecord you can write it like this:
>>
>> Author.where(first_name: 'John').or(Author.where(last_name: 'Smith'))
>>
>> It’s annoying that you need to pass in a whole relation to the `or`
>> function. It would be nicer to have something shorter and cleaner. So, I
>> propose to add a `where.or` query method, similar to the existing
>> `where.not`. This new method would take params in the same way `where`
>> does, but instead of using AND as a keyword to join the predicates, it
>> would use OR. The query above would be built as follows:
>>
>> Author.where.or(first_name: 'John', last_name: 'Smith')
>>
>> I’m not sure if I’m missing something fundamental that makes this feature
>> difficult to implement. I’ve actually implemented a working version and I’d
>> be happy to push a PR if the feedback is positive.
>>
>> Besides the technical challenges that may arise, do you think it’s a
>> useful feature?
>>
>> Thanks!
>>
>>
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>
>
> --
> *Kevin D. Deisz*
> CTO, CultureHQ <https://www.culturehq.com>
>
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