Add filtering query method to Vue client-code entity services.

[kevinbwusa]

Overview of the feature request

Allow Vue front-end client services to use query parameters like Angular does.

Motivation for or Use Case

This feature is important to me because I need a light-weight entity filtering capability that is available to front-end Vue clients and I don't want to use Elastic Search.

Related issues or PR

N/A

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I have implemented a solution here: https://github.com/kevinbwusa/jhipster-vuejs and I will now submit a pull request to have it merged.

[stonedMoose]

Hi @kevinbwusa, what you suggest could be a good idea.

I took a look on the solution you implemented, and I have some suggestion:

• you should type the queryParams of your buildQueryParamsmethod. This way you can get rid of the Array type check.
• Instead of using the for loop over the params, I think you could simply do it like this:

buildQueryParams(queryParams: string[]) {
  return queryParams.join('&')
}

• I'm not convinced that the test you suggest test what you implemented. For me it checks that given a mocked return value from a service. When I call the mocked method of that service, it return the mocked return value. But I might misreading your test.
• You should write unit test for your buildQueryParams function.