enable User-defined templates to work with the gradle plugin #13705

[Mintas]

fix https://github.com/OpenAPITools/openapi-generator/issues/13705 (more detail on issue)

Client is expected to use files as Map<String, Map<String,String>>, where external key - is TemplateDefinition.templateFile, and internal map contains fieldName<>value mapping for other fields in TemplateDefinitions, thus keys are: folder (string, default ""), destinationFilename (string), templateType(string, name of TemplateFileType enum constant, default "SupportingFiles").

Example:

    openApiGenerate {
        generatorName = "spring"
        templateDir = file("templates").absolutePath
        files = [
            "my.mustache": ["templateType": "Model", "destinationFilename":"My.java"]
        ]
    }

for more info, see User-defined Templates Customization docs

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[wing328]

@Mintas thanks for the PR. When you've time, can you please PM me via Slack for a quick chat (IM) ?

ref: https://join.slack.com/t/openapi-generator/shared_invite/zt-12jxxd7p2-XUeQM~4pzsU9x~eGLQqX2g

[narenmanoharan]

I have the same issue: my custom templates are not picked up for the openApiGenerate task. Would it be possible to do a release with this fix?

[Mintas]

@narenmanoharan Hi! Glad that you have asked! Haven't been here for a while. Will continue my attemps to push my PR to release =)

[narenmanoharan]

@narenmanoharan Hi! Glad that you have asked! Haven't been here for a while. Will continue my attemps to push my PR to release =)

Thanks for fixing this! :)

[Mintas]

@wing328 lets merge this one?)

[Mintas]

@borsch probably you can help merging this PR ?

[borsch]

@Mintas could you add similar feature to maven plugin?

[Mintas]

@borsch may be in another issue and PR, cos I dont have enough spare time unfortunately =(

[wing328]

@Mintas can you please resolve the merge conflicts? I'll try to get this into v7.0.0

sorry for the delay in reviewing and getting it merged as there are too many PRs.