Comments (3)
Right now schemas are used only for writing, ie for commands. But you can override an underlying dataset which keeps a list of columns for SELECT
s with
dataset do |relation|
pk_header = klass.primary_key_header(db, table)
select(*relation.schema.attributes.keys).order(*pk_header.qualified)
end
This should work, but I didn't test it
You may find useful the default dataset implementation and the bootstrapping code
from rom-sql.
Thanks a lot!
Working snippet in case somebody else needs it someday:
class Users < ROM::Relation[:sql]
schema :users, infer: false do
attribute :id, Types::Int.meta(primary_key: true)
attribute :email, Types::String
end
dataset do |relation|
pk_header = relation.primary_key_header(db, :users)
select(*relation.schema.attributes.keys).order(*pk_header.qualified)
end
end
irb(main):003:0> rom.relation(:users)
=> #<Users dataset=#<Sequel::Postgres::Dataset: "SELECT \"id\", \"email\" FROM \"users\" ORDER BY \"users\".\"id\"">>
from rom-sql.
I'd appreciate if somebody could report an issue about using schema attrs
for the default dataset. It's a simple thing to do I believe.
On 8 October 2016 at 9:11:40 AM, Marion Duprey ([email protected])
wrote:
—
You are receiving this because you are subscribed to this thread.
Reply to this email directly, view it on GitHub
#98 (comment), or mute
the thread
https://github.com/notifications/unsubscribe-auth/AAAEKmOZ_i5HciRj5UzN3YpqqtyYQFNzks5qx8C8gaJpZM4KRvrK
.
from rom-sql.
Related Issues (20)
- Possible race condition when inferring schema HOT 6
- Legacy schema
- Multi_insert returns more results than expected in some specific conditions HOT 5
- Attribute methods not available *within* a relation, but are *outside* of a relation HOT 4
- create returns nil for custom primary keys HOT 4
- OVER clause lost from row_number functions. HOT 9
- Postgres Upsert command does not support specifying index predicate for partial unique indices
- Translate symbols in a hash applied to `Relation#where` to attributes HOT 1
- "undefined method `stream'" when trying to use the `:pg_streaming` plugin HOT 2
- Multi-Schema database HOT 1
- Relation#multi_insert fails with blob data HOT 4
- Add a custom `Create` command for sqlite
- Use of projection dsl is not available in Relation#exclude
- Support for ANY in condition DSL HOT 5
- Error when attempting to join relations across different databases HOT 3
- [Migration] schema_migrations and schema_info tables error HOT 2
- Support virtual columns in `union` queries
- Problem with :create command and custom types HOT 2
- `by_pk` causes stack overflow when used with single primary key while table define composite primary key
- SQLite doesn't cast 1/0 to true and false HOT 5
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from rom-sql.