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Can add a hook method? #57
Description
Feature Request
Is your feature request related to a problem? Please describe.
how do i add a hook method? : Such as modified_field, validate_delete, validate_field,validate_write
Describe the solution you'd like
1, When inserting or updating an entity, the validate_write method is triggered ;
2,When the entity field value is modified, the modified_field and validate_field method is triggered ;
3.When the entity field value is modified, there is a method such as orig() that returns the original record value before modification.
Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.
Activity
github-actions commentedon Apr 22, 2024
Thank you for opening your first issue in the Canyon-SQL project!
TheRustifyer commentedon Apr 22, 2024
Hello @qibinlin
There's no direct functionality like those
hooks, but since most of the methods of the entities returns a wrapperResult<T, E>, (and the ones that makes inserts and updates for sure) you can apply any of the methods over the result wrapper to implement a similar functionality, for example, you can invoke.map(),and_then(),or()and pass the logic that you want to execute to the methods argument (typically a clousure).For example, after inserting data with a
canyon_entityinstace, invoking the.insert()method, you'll obtain aResult<Pk, Err>, wherePkis just a placeholder for the same datatype that holds theprimary_keyannotation on your entity.So, if you need something with that, you'll need to procedurally manipulate the
Resultwith the methods provided in its API, or do a pattern matching for handling the Ok or Err variants.Let us know if this helped you.
Cheers.