Added the ability to full-text search for selected fields

[RinatMullayanov]

Hello, I added the ability to full-text search for selected fields.

GET    /posts?q=search-text&attr=fieldName1,fieldName2,fieldName3,etc

When no field is specified, the search works as before.

[ronerjr]

I'm very interested in this feature.
Please, resolve this conflicts to add a reviewer

[RinatMullayanov]

@ronerjr I resolved the conflicts.

[ronerjr]

@typicode let's ship it \o

[RinatMullayanov]

@typicode @ronerjr Will you accept my PR?

[RinatMullayanov]

@typicode @ronerjr Will you accept my PR?

[childonline]

why was this never merged?

[TerryJung]

i think it will be really useful feature

[Earthii]

bump

[r03ert0]

it would be awesome to have this feature!

[GilSeonJu]

To utilize full-text search in the latest version of v1, you cannot use the syntax GET /posts?q=search-text.
Please provide information on how to utilize full text search in the latest version.

[PavanBashetty]

q query parameter is not working.
http://localhost:3000/products?q=silver

[ubeysaab]

@PavanBashetty it doesn't work for me too if you take a look at the v1 documentation you will see that _like,_q, and pagination with limit have been deprecated

[notPlancha]

If anyone wants to use the latest v0 with this feature, I implemented this pr on my fork https://github.com/notPlancha/json-server

[varun-mfs]

If you want to use the q query parameter which isn't working with latest version ([1.0.0-beta.0]
Changing the version to "^0.17.4" and it worked.