如何将逗号分隔的查询字符串转换为字符串数组

Question

I am wondering if there is a

i have a query param which I get when user calls a URL and that can have one or more values which ill be comma separated. When I get the param I need to convert the comma separated list of items into array of strings, so I can pass them to my SQL query. The below code prints out the [ 'sfr', 'condo', 'vac' ] for the inPropTyperray but then when i add the array to myQstr it no longer is a array of string but a list comma separated like this. [ 'LOWER(f.Record.propertyType) IN sfr,condo,vac' ]

Not sure what i am missing

 propertytype = 'sfr,condo,vac' myQstr =[] if(propertytype){ console.log('we have Property Filter') if(propertytype.length > 0){ let inPropType = propertytype.split(",") let inPropTyperray = [] inPropType.forEach(function(element){ inPropTyperray.push(element) }) myQstr.push("LOWER(f.Record.propertyType) IN " + inPropTyperray ) console.log(inPropTyperray) console.log(myQstr) } }

propertytype = 'sfr,condo,vac'
myQstr =[]

  if(propertytype){
      console.log('we have Property Filter')
      if(propertytype.length > 0){
        let inPropType = propertytype.split(",")
        let inPropTyperray = []
        inPropType.forEach(function(element){
        inPropTyperray.push(element)
        }) 
        myQstr.push("LOWER(f.Record.propertyType) IN " + inPropTyperray )
        console.log(inPropTyperray)
        console.log(myQstr)
      }
   }

Answer 1

You should map array values to SQL strings and add those brackets to query string:

 propertytype = 'sfr,condo,vac' myQstr =[] if(propertytype){ console.log('we have Property Filter') if(propertytype.length > 0){ let inPropType = propertytype.split(",") let inPropTyperray = [] inPropType.forEach(function(element){ inPropTyperray.push(element) }) myQstr.push(`LOWER(f.Record.propertyType) IN (${inPropTyperray.map(i => `'${i}'`)})`) console.log(inPropTyperray) console.log(myQstr) } }

Answer 2

SQL requires quotes around each string in the IN list, and also requires it to be inside () .

 propertytype = 'sfr,condo,vac' myQstr = [] if (propertytype) { console.log('we have Property Filter') if (propertytype.length > 0) { let inPropType = propertytype.split(",") let inPropTyperray = inPropType.map(prop => `'${prop}'`).join(',') myQstr.push(`LOWER(f.Record.propertyType) IN (${inPropTyperray})`); console.log(inPropTyperray) console.log(myQstr) } }

Answer 3

It's pretty simple. You just need to split the string with the delimiter/separator , and you should be getting an array of strings.

const propertyType = 'sfr,condo,vac';
const myQstr = propertyType.split(",");

console.log(myQstr); // [ 'sfr', 'condo', 'vac' ]