How to return string by matching two values with similar characters?












0















Not much helpful question title. Let me explain: For a search functionality, I use the code below to return items that match a search query:



filter(value: string, query: string): boolean {
return value.toLowerCase().indexOf(query.toLowerCase()) > -1;
}

filteredItems() {
return this.items.filter(i => this.filter(i.value, this.queryString));
}


I have a case where I need to return an item whose value is DIGER if query string's value, containing Turkish characters, is DİĞER and vice versa.



I tried



if(query.includes('ğ') || query.includes('ş') || query.includes('ö') || query.includes('ü') || query.includes('ı') || query.includes('ç')) {
return value.toLowerCase().indexOf(query.replace('ğ', 'g').replace('ş', 's').replace('ö', 'o').replace('ü', 'u').replace('ı', 'i').replace('ç', 'c').toLowerCase()) > -1;
}


Not working quite as I demand, it only converts the Turkish characters, but I couldn't find any solution. How would I accomplish such a task?










share|improve this question























  • So, what else do you want to convert?

    – Andreas
    Nov 22 '18 at 7:03
















0















Not much helpful question title. Let me explain: For a search functionality, I use the code below to return items that match a search query:



filter(value: string, query: string): boolean {
return value.toLowerCase().indexOf(query.toLowerCase()) > -1;
}

filteredItems() {
return this.items.filter(i => this.filter(i.value, this.queryString));
}


I have a case where I need to return an item whose value is DIGER if query string's value, containing Turkish characters, is DİĞER and vice versa.



I tried



if(query.includes('ğ') || query.includes('ş') || query.includes('ö') || query.includes('ü') || query.includes('ı') || query.includes('ç')) {
return value.toLowerCase().indexOf(query.replace('ğ', 'g').replace('ş', 's').replace('ö', 'o').replace('ü', 'u').replace('ı', 'i').replace('ç', 'c').toLowerCase()) > -1;
}


Not working quite as I demand, it only converts the Turkish characters, but I couldn't find any solution. How would I accomplish such a task?










share|improve this question























  • So, what else do you want to convert?

    – Andreas
    Nov 22 '18 at 7:03














0












0








0








Not much helpful question title. Let me explain: For a search functionality, I use the code below to return items that match a search query:



filter(value: string, query: string): boolean {
return value.toLowerCase().indexOf(query.toLowerCase()) > -1;
}

filteredItems() {
return this.items.filter(i => this.filter(i.value, this.queryString));
}


I have a case where I need to return an item whose value is DIGER if query string's value, containing Turkish characters, is DİĞER and vice versa.



I tried



if(query.includes('ğ') || query.includes('ş') || query.includes('ö') || query.includes('ü') || query.includes('ı') || query.includes('ç')) {
return value.toLowerCase().indexOf(query.replace('ğ', 'g').replace('ş', 's').replace('ö', 'o').replace('ü', 'u').replace('ı', 'i').replace('ç', 'c').toLowerCase()) > -1;
}


Not working quite as I demand, it only converts the Turkish characters, but I couldn't find any solution. How would I accomplish such a task?










share|improve this question














Not much helpful question title. Let me explain: For a search functionality, I use the code below to return items that match a search query:



filter(value: string, query: string): boolean {
return value.toLowerCase().indexOf(query.toLowerCase()) > -1;
}

filteredItems() {
return this.items.filter(i => this.filter(i.value, this.queryString));
}


I have a case where I need to return an item whose value is DIGER if query string's value, containing Turkish characters, is DİĞER and vice versa.



I tried



if(query.includes('ğ') || query.includes('ş') || query.includes('ö') || query.includes('ü') || query.includes('ı') || query.includes('ç')) {
return value.toLowerCase().indexOf(query.replace('ğ', 'g').replace('ş', 's').replace('ö', 'o').replace('ü', 'u').replace('ı', 'i').replace('ç', 'c').toLowerCase()) > -1;
}


Not working quite as I demand, it only converts the Turkish characters, but I couldn't find any solution. How would I accomplish such a task?







javascript






share|improve this question













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share|improve this question










asked Nov 22 '18 at 7:01









Ahmet ÖmerAhmet Ömer

8817




8817













  • So, what else do you want to convert?

    – Andreas
    Nov 22 '18 at 7:03



















  • So, what else do you want to convert?

    – Andreas
    Nov 22 '18 at 7:03

















So, what else do you want to convert?

– Andreas
Nov 22 '18 at 7:03





So, what else do you want to convert?

– Andreas
Nov 22 '18 at 7:03












1 Answer
1






active

oldest

votes


















1














The problem looks to be that value.toLowerCase() may still include Turkish, so if the new query is searching for English characters only, it may not be found inside the new value.



One option would be to use an unconditional conversion of both the value and the query to English characters, after which you can use includes to check if the new value (the haystack) .includes the query (needle):



const chars = {
ğ: 'g',
ş: 's',
ö: 'o',
ü: 'u',
ı: 'i',
ç: 'c',
};
const convert = str => str
.replace(/[ğşöüıç]/g, char => chars[char])
.toLowerCase();


filter(value: string, query: string): boolean {
const [replacedValue, replacedQuery] = [value, query].map(convert);
return replacedValue.includes(replacedQuery);
}





share|improve this answer
























  • To make it work correctly with all cases(for example it didn't find 'YAZIŞMA' when 'yazisma' was searched. I put the toLowerCase() method before replacing the characters. But it solved my problem, accepting this as an answer. Thanks!

    – Ahmet Ömer
    Nov 22 '18 at 7:29











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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









1














The problem looks to be that value.toLowerCase() may still include Turkish, so if the new query is searching for English characters only, it may not be found inside the new value.



One option would be to use an unconditional conversion of both the value and the query to English characters, after which you can use includes to check if the new value (the haystack) .includes the query (needle):



const chars = {
ğ: 'g',
ş: 's',
ö: 'o',
ü: 'u',
ı: 'i',
ç: 'c',
};
const convert = str => str
.replace(/[ğşöüıç]/g, char => chars[char])
.toLowerCase();


filter(value: string, query: string): boolean {
const [replacedValue, replacedQuery] = [value, query].map(convert);
return replacedValue.includes(replacedQuery);
}





share|improve this answer
























  • To make it work correctly with all cases(for example it didn't find 'YAZIŞMA' when 'yazisma' was searched. I put the toLowerCase() method before replacing the characters. But it solved my problem, accepting this as an answer. Thanks!

    – Ahmet Ömer
    Nov 22 '18 at 7:29
















1














The problem looks to be that value.toLowerCase() may still include Turkish, so if the new query is searching for English characters only, it may not be found inside the new value.



One option would be to use an unconditional conversion of both the value and the query to English characters, after which you can use includes to check if the new value (the haystack) .includes the query (needle):



const chars = {
ğ: 'g',
ş: 's',
ö: 'o',
ü: 'u',
ı: 'i',
ç: 'c',
};
const convert = str => str
.replace(/[ğşöüıç]/g, char => chars[char])
.toLowerCase();


filter(value: string, query: string): boolean {
const [replacedValue, replacedQuery] = [value, query].map(convert);
return replacedValue.includes(replacedQuery);
}





share|improve this answer
























  • To make it work correctly with all cases(for example it didn't find 'YAZIŞMA' when 'yazisma' was searched. I put the toLowerCase() method before replacing the characters. But it solved my problem, accepting this as an answer. Thanks!

    – Ahmet Ömer
    Nov 22 '18 at 7:29














1












1








1







The problem looks to be that value.toLowerCase() may still include Turkish, so if the new query is searching for English characters only, it may not be found inside the new value.



One option would be to use an unconditional conversion of both the value and the query to English characters, after which you can use includes to check if the new value (the haystack) .includes the query (needle):



const chars = {
ğ: 'g',
ş: 's',
ö: 'o',
ü: 'u',
ı: 'i',
ç: 'c',
};
const convert = str => str
.replace(/[ğşöüıç]/g, char => chars[char])
.toLowerCase();


filter(value: string, query: string): boolean {
const [replacedValue, replacedQuery] = [value, query].map(convert);
return replacedValue.includes(replacedQuery);
}





share|improve this answer













The problem looks to be that value.toLowerCase() may still include Turkish, so if the new query is searching for English characters only, it may not be found inside the new value.



One option would be to use an unconditional conversion of both the value and the query to English characters, after which you can use includes to check if the new value (the haystack) .includes the query (needle):



const chars = {
ğ: 'g',
ş: 's',
ö: 'o',
ü: 'u',
ı: 'i',
ç: 'c',
};
const convert = str => str
.replace(/[ğşöüıç]/g, char => chars[char])
.toLowerCase();


filter(value: string, query: string): boolean {
const [replacedValue, replacedQuery] = [value, query].map(convert);
return replacedValue.includes(replacedQuery);
}






share|improve this answer












share|improve this answer



share|improve this answer










answered Nov 22 '18 at 7:08









CertainPerformanceCertainPerformance

79.5k143865




79.5k143865













  • To make it work correctly with all cases(for example it didn't find 'YAZIŞMA' when 'yazisma' was searched. I put the toLowerCase() method before replacing the characters. But it solved my problem, accepting this as an answer. Thanks!

    – Ahmet Ömer
    Nov 22 '18 at 7:29



















  • To make it work correctly with all cases(for example it didn't find 'YAZIŞMA' when 'yazisma' was searched. I put the toLowerCase() method before replacing the characters. But it solved my problem, accepting this as an answer. Thanks!

    – Ahmet Ömer
    Nov 22 '18 at 7:29

















To make it work correctly with all cases(for example it didn't find 'YAZIŞMA' when 'yazisma' was searched. I put the toLowerCase() method before replacing the characters. But it solved my problem, accepting this as an answer. Thanks!

– Ahmet Ömer
Nov 22 '18 at 7:29





To make it work correctly with all cases(for example it didn't find 'YAZIŞMA' when 'yazisma' was searched. I put the toLowerCase() method before replacing the characters. But it solved my problem, accepting this as an answer. Thanks!

– Ahmet Ömer
Nov 22 '18 at 7:29


















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