'contains' filter should be case insensitive

[Redsandro]

According to the docs:

To only show articles where the title attribute is a case-insensitive match against linux-rocks:

http://localhost:16006/rest/articles?filter[title]=~linux-rocks

To only show articles where the title attribute contains for:

http://localhost:16006/rest/articles?filter[title]=:for

It doesn't state that seaching within a field (:) should be case-sensitive.

Looking at for example the jsonapi-store-relationaldb handler, you can see that the : filter is actually case insensitive.

Searching with the mongodb handler should also be case-insensitive, because the behavior of filters should be identical between storage providers.

A workaround is to query all possible cases and merge the search results:

• ?filter[title]=:for
• ?filter[title]=:For
• ?filter[title]=:FOR

The offending line is this:

jsonapi-store-mongodb/lib/mongoHandler.js

Line 70 in eaf0c47

":": new RegExp(value)

I will provide a PR below.

[Redsandro]

@pmcnr-hx or @paparomeo is either of you willing to review this PR?

I understand that there is a slowdown in maintenance, and there is an internal debate about the possibility of handing over the maintenance to someone else. This is however a serious little bugger that could really use a release on npm.

[championswimmer]

I'll be working on forking store-mongodb to jagql in this week