elasticsearch - Querying Elasticsearch and using analyzers

Question

I am using elasticsearch on the yii2 framework using the elasticsearch extension.

I have to index some location data in elasticsearch as follows:

• id
• countryName
• stateName
• cityName
• addressName

I sould be able to find a location based on provided data such as:

• where countryName='united states' and stateName='new york'
• where cityName='broadway'
• where countryName='united states' and stateName like '%york'

and it should be case insensitive.

Currently when I am doing a query, I don't get any results if the case does not match.

My mappings are:

properties :
    id : 
        type : long
    countryName
        type : string
        fields :
            raw :
                type : string
                index : not_analyzed
    stateName
        type : string
        fields :
            raw :
                type : string
                index : not_analyzed
    cityName
        type : string
        fields :
            raw :
                type : string
                index : not_analyzed
    addressName
        type : string
        fields :
            raw :
                type : string
                index : not_analyzed

And i added an analyzer:

analysis :
    analyzer : 
        analyzer_keyword : 
            tokenizer : keyword
            filter : lowercase

When I do a query countryName='United States', I don't get anything, but if I do countryName='united states', I get the records that match

When I do countryName.raw='United States', I get records that match, but if it's lowercase I don't get anything.

For stateName, cityName and addressName, if I make a query like: stateName='New York' or change it to lowercase I do not get any results.

If I do for stateName.raw, cityName.raw and addressName.raw, it works like the countryName.raw

Can anyone help me with this?