Fix isBodyAllow to return true in case of DELETE method

[topce]

fix
#7557
#10448
fix isBodyAllow to return true in case of DELETE method
add new method isMethodPutOrPatchOrPost

fix angular typescript client to allow delete with body
if angular version allow it use isBodyAllow in template
otherwise use isMethodPutOrPatchOrPost
angular fix client in version12.1
change default angular version to be latest
in this moment 12.2.12

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technical committee:
@TiFu (2017/07) @taxpon (2017/07) @sebastianhaas (2017/07) @kenisteward (2017/07) @Vrolijkx (2017/09) @macjohnny (2018/01) @topce (2018/10) @akehir (2019/07) @petejohansonxo (2019/11) @amakhrov (2020/02)

Hi @wing328 if you have time can check this (with other maintainers) because
I change templates in other libs
however tried not to break anything

[wing328]

cc @OpenAPITools/generator-core-team as the change covers CodegenOperation.java

[wing328]

LGTM

[angelaki]

Hey, I'm using openapi-generator-cli to generate my Angular code. Right now I'm strugging with DELETE not containing my body. Seams like this was pretty muched discussed - but implemented? What am I doing wrong? Isn't this fix included in the cli, yet?

docker run openapitools/openapi-generator-cli generate -i swagger.json -g typescript-angular -p=useSingleRequestParameter=true -o ./out --skip-validate-spec

[macjohnny]

@angelaki it was reverted in #10976

[angelaki]

@angelaki it was reverted in #10976

Oh, too bad. But thank you. Is there right now any way to generate a DELETE-method containing a body? Was there a released version supporting it? And: why wasn't just the request method used?

[angelaki]

@angelaki it was reverted in #10976

Sorry for bumping, but I'd really need this feature. Since I haven't found any pending issues, does this work as expected right now? Can I maybe help here fixing this issue?

[macjohnny]

@angelaki sure, you can file a new PR. Please keep in mind the discussion in #10976, ie a flag to enable this behavior would probably be good

[angelaki]

@macjohnny do you maybe remember the reason request isn't used instead of get / post / patch ...? Not just for delete but in general? So the generated code would be less dependent on Angular changes?

[macjohnny]

@angelaki unfortunately I dont remember, but maybe you can find some previous PRs where this was discussed.