added contains express support

[iakashpatel]

Why this PR?

Recently I started using https://sqlalchemy-utils.readthedocs.io/en/latest/_modules/sqlalchemy_utils/types/scalar_list.html to store array of enum.

for which I need to filter table with specific value inside array of enum (TEXT/BLOB at low level) which is feasible using contains expression.

What is changed/added ?

• Added contains expression support for sqlalchemy and testcases to support it.
• Updated Doc/Example

PS: 🌟 My first open-source contribution :)

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[arthurio]

Hey @iakashpatel 👋🏻
Thanks for the contribution, this seems useful for more that just the scalar list type, thanks for adding it 👍🏻
However, the tests you have updated don't test the actual feature you are looking for. Could you update the tests as mentioned in the comments?

[arthurio]

This should be reverted.

[arthurio]

Here name is not a list of enum so I'm not sure we are testing exactly what you are looking for... Could you add another enum list field instead and test against it?

[codecov]

Codecov Report

Merging #395 (0cab115) into main (64c93b9) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #395   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files            6         6           
  Lines          180       180           
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  Hits           180       180           

Impacted Files	Coverage Δ
fastapi_filter/contrib/sqlalchemy/filter.py	100.00% <ø> (ø)

[raphodn]

Hi @iakashpatel , I'm interested in the same feature, and was wondering if you still planned to work on this PR ? If not I might consider opening one myself