Documentation for sea-orm #280

charleschege · 2021-10-29T07:47:12Z

Adds documentation for all public types for this crate.

Add code examples for the macros

billy1624 · 2021-10-29T09:08:41Z

Wow! Huge thanks for this!! I want to do this for long time but busy with feature release... loll

charleschege · 2021-10-29T09:11:16Z

Glad I could do it.

billy1624 · 2021-10-29T10:59:24Z

I think for all of our important traits and derive macros, we could document it this way...

Describe what this trait does and its usage. How to derive it manually? Is there any derive macros for it? How? If there is any.

sea-orm/src/entity/active_enum.rs

Lines 4 to 110 in e21af53

 /// A Rust representation of enum defined in database. 

 /// 

 /// # Implementations 

 /// 

 /// You can implement [ActiveEnum] manually by hand or use the derive macro [DeriveActiveEnum](sea_orm_macros::DeriveActiveEnum). 

 /// 

 /// # Examples 

 /// 

 /// Implementing it manually versus using the derive macro [DeriveActiveEnum](sea_orm_macros::DeriveActiveEnum). 

 /// 

 /// > See [DeriveActiveEnum](sea_orm_macros::DeriveActiveEnum) for the full specification of macro attributes. 

 /// 

 /// ```rust 

 /// use sea_orm::entity::prelude::*; 

 /// 

 /// // Using the derive macro 

 /// #[derive(Debug, PartialEq, DeriveActiveEnum)] 

 /// #[sea_orm(rs_type = "String", db_type = "String(Some(1))")] 

 /// pub enum DeriveCategory { 

 /// #[sea_orm(string_value = "B")] 

 /// Big, 

 /// #[sea_orm(string_value = "S")] 

 /// Small, 

 /// } 

 /// 

 /// // Implementing it manually 

 /// #[derive(Debug, PartialEq)] 

 /// pub enum Category { 

 /// Big, 

 /// Small, 

 /// } 

 /// 

 /// impl ActiveEnum for Category { 

 /// // The macro attribute `rs_type` is being pasted here 

 /// type Value = String; 

 /// 

 /// // Will be atomically generated by `DeriveActiveEnum` 

 /// fn to_value(&self) -> Self::Value { 

 /// match self { 

 /// Self::Big => "B", 

 /// Self::Small => "S", 

 /// } 

 /// .to_owned() 

 /// } 

 /// 

 /// // Will be atomically generated by `DeriveActiveEnum` 

 /// fn try_from_value(v: &Self::Value) -> Result<Self, DbErr> { 

 /// match v.as_ref() { 

 /// "B" => Ok(Self::Big), 

 /// "S" => Ok(Self::Small), 

 /// _ => Err(DbErr::Type(format!( 

 /// "unexpected value for Category enum: {}", 

 /// v 

 /// ))), 

 /// } 

 /// } 

 /// 

 /// fn db_type() -> ColumnDef { 

 /// // The macro attribute `db_type` is being pasted here 

 /// ColumnType::String(Some(1)).def() 

 /// } 

 /// } 

 /// ``` 

 /// 

 /// Using [ActiveEnum] on Model. 

 /// 

 /// ``` 

 /// use sea_orm::entity::prelude::*; 

 /// 

 /// // Define the `Category` active enum 

 /// #[derive(Debug, Clone, PartialEq, DeriveActiveEnum)] 

 /// #[sea_orm(rs_type = "String", db_type = "String(Some(1))")] 

 /// pub enum Category { 

 /// #[sea_orm(string_value = "B")] 

 /// Big, 

 /// #[sea_orm(string_value = "S")] 

 /// Small, 

 /// } 

 /// 

 /// #[derive(Clone, Debug, PartialEq, DeriveEntityModel)] 

 /// #[sea_orm(table_name = "active_enum")] 

 /// pub struct Model { 

 /// #[sea_orm(primary_key)] 

 /// pub id: i32, 

 /// // Represents a db column using `Category` active enum 

 /// pub category: Category, 

 /// pub category_opt: Option<Category>, 

 /// } 

 /// 

 /// #[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)] 

 /// pub enum Relation {} 

 /// 

 /// impl ActiveModelBehavior for ActiveModel {} 

 /// ``` 

 pub trait ActiveEnum: Sized { 

 /// Define the Rust type that each enum variant represents. 

 type Value: Into<Value> ValueType Nullable TryGetable; 

 /// Convert enum variant into the corresponding value. 

 fn to_value(&self) -> Self::Value; 

 /// Try to convert the corresponding value into enum variant. 

 fn try_from_value(v: &Self::Value) -> Result<Self, DbErr>; 

 /// Get the database column definition of this active enum. 

 fn db_type() -> ColumnDef; 

 }

Document the derive macros and its macro attributes

sea-orm/sea-orm-macros/src/lib.rs

Lines 105 to 135 in e21af53

 /// A derive macro to implement `sea_orm::ActiveEnum` trait for enums. 

 /// 

 /// # Limitations 

 /// 

 /// This derive macros can only be used on enums. 

 /// 

 /// # Macro Attributes 

 /// 

 /// All macro attributes listed below have to be annotated in the form of `#[sea_orm(attr = value)]`. 

 /// 

 /// - For enum 

 /// - `rs_type`: Define `ActiveEnum::Value` 

 /// - Possible values: `String`, `i8`, `i16`, `i32`, `i64`, `u8`, `u16`, `u32`, `u64` 

 /// - Note that value has to be passed as string, i.e. `rs_type = "i8"` 

 /// - `db_type`: Define `ColumnType` returned by `ActiveEnum::db_type()` 

 /// - Possible values: all available enum variants of `ColumnType`, e.g. `String(None)`, `String(Some(1))`, `Integer` 

 /// - Note that value has to be passed as string, i.e. `db_type = "Integer"` 

 /// 

 /// - For enum variant 

 /// - `string_value` or `num_value`: 

 /// - For `string_value`, value should be passed as string, i.e. `string_value = "A"` 

 /// - For `num_value`, value should be passed as integer, i.e. `num_value = 1` or `num_value = 1i32` 

 /// - Note that only one of it can be specified, and all variants of an enum have to annotate with the same `*_value` macro attribute 

 #[proc_macro_derive(DeriveActiveEnum, attributes(sea_orm))] 

 pub fn derive_active_enum(input: TokenStream) -> TokenStream { 

 let input = parse_macro_input!(input as DeriveInput); 

 match derives::expand_derive_active_enum(input) { 

 Ok(ts) => ts.into(), 

 Err(e) => e.to_compile_error().into(), 

 } 

 }

P.S. this is what I did on #258.

Any thoughts? @tyt2y3 @charleschege

billy1624 · 2021-10-29T11:01:31Z

Btw... you could use cargo nightly fmt --all to format the doc comments. See #121.

charleschege · 2021-10-29T11:23:04Z

@billy1624 would adding the documentation examples for using derive macros and traits manually duplicate the examples? Can we use module level documentation for this to show how to use both manual implementations of a trait and derives of the trait, then we refer them from the inline documentation?

billy1624 · 2021-10-29T11:24:20Z

Sounds good

tyt2y3 · 2021-10-29T17:36:17Z

Why did the build fail?

Provide module level code example on how to create an Entity, Model, ActiveModel, Column and PrimaryKey

tyt2y3 · 2021-10-30T13:02:03Z

@billy1624 know why the build failed?

charleschege · 2021-10-30T13:07:36Z

@tyt2y3 I am investigating a way to solve the issue. What I have discovered on my end is that the Github workflow runs cargo test --workspace which tests even the documentation.

Somehow the test is not detecting crate imports in the documentation. There are errors like

  |
3 | use sea_orm::entity::prelude::*;
  |     ^^^^^^^ use of undeclared crate or module `sea_orm`

even though use sea_orm::entity::prelude::*; is imported.

billy1624 · 2021-10-30T13:42:30Z

@billy1624 know why the build failed?

Which error? There are a lot of errors loll

charleschege · 2021-10-30T13:56:12Z

@billy1624 @tyt2y3 Can someone help me with this issue?

Running cargo test --workspace seems to be the issue. It is not detecting sea_orm_macros in documentation examples.

But when i run cargo test --doc or cargo test --all-targets everything works fine, the macros and modules are detected. Does anyone have suggestions on how to import macros on documentation tests ?

billy1624 · 2021-10-30T13:58:52Z

Hey @charleschege, can you point out which error should I look into? E.g. https://github.com/SeaQL/sea-orm/runs/4054619075?check_suite_focus=true#step:4:589 this error. Thanks!

billy1624 · 2021-10-30T13:59:51Z

Click on the line number on the left and copy & paste the URL

billy1624 · 2021-10-30T14:00:46Z

@billy1624 @tyt2y3 Can someone help me with this issue?

Running cargo test --workspace seems to be the issue. It is not detecting sea_orm_macros in documentation examples.

But when i run cargo test --doc or cargo test --all-targets everything works fine, the macros and modules are detected. Does anyone have suggestions on how to import macros on documentation tests ?

Is this related? #249

billy1624 · 2021-10-30T14:15:59Z

Hey @charleschege, is it possible for you to grant write access to us? I want to add the follow code snippet to .github/workflows/rust.yml.

  test-temp:
    name: Unit Test (Temp)
    runs-on: ubuntu-20.04
    strategy:
      matrix:
        args: ["--workspace", "--doc", "--all-targets"]
      fail-fast: false
    steps:
      - uses: actions/checkout@v2

      - uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: stable
          override: true

      - uses: actions-rs/cargo@v1
        with:
          command: test
          args: ${{ matrix.args }}

https://docs.github.com/en/github/collaborating-with-pull-requests/working-with-forks/allowing-changes-to-a-pull-request-branch-created-from-a-fork

charleschege · 2021-10-30T15:30:20Z

I have added access to the repo

charleschege · 2021-10-30T15:32:05Z

Hey @charleschege, can you point out which error should I look into? E.g. https://github.com/SeaQL/sea-orm/runs/4054619075?check_suite_focus=true#step:4:589 this error. Thanks!

My issues stem from this test run:
https://github.com/SeaQL/sea-orm/runs/4054619075?check_suite_focus=true

billy1624 · 2021-10-30T15:44:51Z

Hey @charleschege, it’s already 11pm (HKT) for me. I’m about to sleep. Will talk to you tmr.

jam1garner · 2021-10-30T20:05:26Z

src/entity/active_model.rs

@@ -22,6 24,7 @@ where
 ActiveValue::set(v)
 }

+/// Defines an unset operation on an [ActiveValue]


Could some documentation be added covering why this takes an unused Option<bool>? I don't feel the type's purpose is very clear, even having dug through the source (off-topic for this PR, but would this perhaps be better served by either a 3-value enum or an Option of a 2-value enum? that would allow this to be more self-documenting)

Documenting that is a little bit tricky since the field of ActiveValue are private. I think a user would have to build the documentation with --document-private-items set to see any inner struct documentation.

I have tried to provide an overview of the internals of ActiveValueand a code snippet in the documentation. Take a look at commit 30814f0

Hi there, welcome! You have made a good point.

It certainly is trying to mock a enum, where Set & Unset is like Ok and Err. It could as well be Unset(()).

I was waiting for private enum variant rust-lang/rfcs#2028 (comment) to hide the Unchanged variant from public use.

And that's why.

I have tried to provide an overview of the internals of ActiveValueand a code snippet in the documentation. Take a look at commit 30814f0

Thank you

in the case of

fn Unset<V>(_: Option<bool>) // ^^^^^^^^^^^^^^^

Why the unused parameter? I understand that Unset is supposed to emulate a variant of an enum but that still doesn't explain to me why the parameter.

Because Unset() is not a valid enum. I agree this is a little confusing. May be I should change it in 0.5 to something like

enum ActiveValue { Set(Value), UnchangedDoNotUse, NotSet, }

What do you think?

@tyt2y3 something like that would be a positive change, yes. Tbh if the argument has no meaning, the name Unset seems fine to me (albeit slightly ambiguous if you mean "unset" (verb, action, to switch to a no longer set state) or "unset" (adjective, state, not currently set)), I mostly think just getting rid of the argument is enough for it to make sense to me. Thanks!

p�[200pub struct ActiveValue<V> Add a code snippet for a simple example

billy1624 · 2021-10-31T07:49:56Z

sea-orm-macros/Cargo.toml

+[dev-dependencies]
+sea-orm = { path = "../", features = ["macros"] }
+serde = { version = "^1.0", features = ["derive"] }


Hey @charleschege, I have fixed all the errors inside sea-orm doctest on fcf3ea9. And I know why cargo test --doc passes while cargo test --workspace fails.

In sea-orm-macros/src/lib.rs, you have include some code snippets that requires sea-orm. However, sea-orm-macros does not depends on sea-orm. So, all of the doctests failed. By adding dev-dependencies will solve the problem. 6904b9f

Thanks! This has resolved all the issues I had when testing documentation examples.

sea-orm-macros/src/lib.rs

tyt2y3 · 2021-10-31T08:01:27Z

wow now it builds! a big thanks to @billy1624

billy1624 · 2021-10-31T08:07:34Z

.github/workflows/rust.yml

+ test-temp:
+ name: Unit Test (Temp)
+ runs-on: ubuntu-20.04
+ strategy:
+ matrix:
+ args: ["--workspace", "--doc", "--all-targets"]
+ fail-fast: false
+ steps:
+ - uses: actions/checkout@v2
+
+ - uses: actions-rs/toolchain@v1
+ with:
+ profile: minimal
+ toolchain: stable
+ override: true
+
+ - uses: actions-rs/cargo@v1
+ with:
+ command: test
+ args: ${{ matrix.args }}


Just a kind reminder. Removing it before merge :P

charleschege

LGTM

charleschege · 2021-10-31T14:20:37Z

sea-orm-macros/Cargo.toml

+[dev-dependencies]
+sea-orm = { path = "../", features = ["macros"] }
+serde = { version = "^1.0", features = ["derive"] }


Thanks! This has resolved all the issues I had when testing documentation examples.

sea-orm-macros/src/lib.rs

tyt2y3

Thank you for the meticulous work

charleschege added 13 commits October 28, 2021 15:46

Document the macros.

497bdbe

Add code examples for the macros

Documentation for the stream module

642994a

Merge branch 'SeaQL:master' into master

a80df71

Document the macros.

06aa9e3

Add code examples for the macros

Documetation for the database modeule

91b9e54

Documetation for the schema module

69d5c70

Documetation for the query module

a9b6f8c

Documetation for the executor module

817e9bd

Documetation for the entity module

db098d1

Document the database drivers

e4d115b

Document the error module

f21492b

Document the utils module

037eab9

Fix merge conflicts from SeaQL/sea-orm master branch

a1382b1

tyt2y3 requested review from billy1624 and tyt2y3 October 29, 2021 08:37

charleschege added 2 commits October 30, 2021 11:15

Improve documentation for the drivers and the entity

e002361

Provide module level code example on how to create an Entity, Model, ActiveModel, Column and PrimaryKey

Run fmt --all

870ca3f

Try cargo test with different args

a1167b7

charleschege added 2 commits October 30, 2021 18:55

Solutions for doc tests

a223509

Merge branch 'master' of https://github.com/charleschege/sea-orm

bb83a6d

jam1garner reviewed Oct 30, 2021

View reviewed changes

charleschege and others added 3 commits October 31, 2021 09:03

Provide further exaplanation for

30814f0

p�[200pub struct ActiveValue<V> Add a code snippet for a simple example

Try fixing some doctest errors

fcf3ea9

Try fixing sea-orm-macros doctest errors

6904b9f

billy1624 requested changes Oct 31, 2021

View reviewed changes

charleschege commented Oct 31, 2021

View reviewed changes

tyt2y3 approved these changes Nov 1, 2021

View reviewed changes

tyt2y3 merged commit d5da351 into SeaQL:master Nov 1, 2021

renovate bot mentioned this pull request Apr 25, 2022

fix(deps): update rust crate sea-orm to 0.12 duskmoon314/LoD-backend#3

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Documentation for sea-orm #280

Documentation for sea-orm #280

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Documentation for sea-orm #280

Documentation for sea-orm #280

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