Elasticsearch character alternative like i or ı - elasticsearch

Question

I have a problem with some turkish character and need like alternative character to fix it.
Example : "İzmir" of our city but some user searching it "ızmır" some Of "Izmır" and sometimes "izmir" .
How can I act like i or "ı" or "İ" or "ı " "I" or "i" whenever user using this chars?

Answer 1

You just need to correct your mapping from english to Turkish, if you done so can you paste here your mapping.
Because mapping holds the power to search.

Answer 2

The Turkish analyzer doesn't do that out of the box for you. Example:
GET _analyze
{
"analyzer": "turkish",
"text": "ızmır Izmır izmir"
}
{
"tokens": [
{
"token": "ızmır",
"start_offset": 0,
"end_offset": 5,
"type": "<ALPHANUM>",
"position": 0
},
{
"token": "ızmır",
"start_offset": 6,
"end_offset": 11,
"type": "<ALPHANUM>",
"position": 1
},
{
"token": "izmir",
"start_offset": 12,
"end_offset": 17,
"type": "<ALPHANUM>",
"position": 2
}
]
}
But you could use ASCII folding for that purpose — creating an index with a custom analyzer and testing the example against it:
PUT /asciifold_example
{
"settings" : {
"analysis" : {
"analyzer" : {
"my_analyzer" : {
"tokenizer" : "standard",
"filter" : ["lowercase", "asciifolding"]
}
}
}
}
}
GET asciifold_example/_analyze
{
"analyzer": "my_analyzer",
"text": "ızmır Izmır izmir"
}
{
"tokens": [
{
"token": "izmir",
"start_offset": 0,
"end_offset": 5,
"type": "<ALPHANUM>",
"position": 0
},
{
"token": "izmir",
"start_offset": 6,
"end_offset": 11,
"type": "<ALPHANUM>",
"position": 1
},
{
"token": "izmir",
"start_offset": 12,
"end_offset": 17,
"type": "<ALPHANUM>",
"position": 2
}
]
}