XBROWSE FIELDS with Name in Array

[Jimmy]

hi,

i want to "pick" Name of FIELD from DBSTRUCT() an use it with XBROWSE
now i have Names of FIELD in Array but how to pass it to XBROWSE

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90, 10 XBROWSE oBrw1 FIELDS One->First, One->Last ;

this Style need to "know" Name of FIELD

what i like to have are this

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90, 10 XBROWSE oBrw1 FIELDS aMyFields

! Note : i do NOT want to Browse a Array, i want to use DBF but Name of FIELD are in Array "aMyFields"

[Jimmy]

hi,

i now have

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  // store Array
   SP_aDbfStruct( DBSTRUCT() )

   @ 50,  2 XBROWSE oBrwDBF FIELDS Struct2String()

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FUNCTION SP_aDbfStruct( xValue )
STATIC aDbfStruct :=  {}
   IF PCOUNT() > 0
      aDbfStruct := ACLONE( xValue )
   ENDIF
RETURN aDbfStruct

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FUNCTION Struct2String()
LOCAL aStruc := SP_aDbfStruct()  // recall Array
LOCAL ii, iMax,cField , cRet := ""

   iMax := LEN(aStruc)
   FOR ii := 1 TO iMax
      cField := aStruc[ii][DBS_NAME]
      cRet += CHR(34) + cField + CHR(34)
      IF ii <> iMax
         cRet += ", "
      ENDIF
   NEXT

   FWLOG cRet
RETURN cRet
 

now XBROWSE does display all Column + 1 Extra Column which display String i got from Function Struct2String()


what i´m doing wrong

p.s. Fieldname will later come from Picklist

[Jimmy]

i try to ask other Way

i saw Sample

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   @ 0, 0 XBROWSE oBrw OF oDlg FIELDS One->First, One->Last
or
   @ 0, 0 XBROWSE oBrw OF oDlg COLUMNS 1,2

which both can "reduce" Column to DBF FIELD which i want

but that is "hardcode" an now i have a "Picklist" for it
so i try

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   @ 0, 0 XBROWSE oBrw OF oDlg FIELDS FieldNameFunc()
or
   @ 0, 0 XBROWSE oBrw OF oDlg COLUMNS FiledNumberFunc()

both Function return String, but it seems not to work as i want
i still get "all" FIELD of DBF display in XBROWSE ...

so how is the right Syntax for XBROWSE or XCbrowseNew( )

[Jimmy]

hi,

ok got it this Way

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XBROWSE oBrwDBF COLUMNS ColsNumber( DBSTRUCT() ) SIZE nWidth - 20, nHeight - 90 PIXEL OF oWnd ;
    FONT oFontDefault ;
    COLOR BFcolor, BGcolor ;
    ALIAS cAlias CELL LINES NOBORDER FASTEDIT AUTOCOLS

FUNCTION ColsNumber(aDbfStruct)
LOCAL aStruc := SP_aDbfStruct()  // Array from Picklist
LOCAL ii, iMax, nPosi
LOCAL aRet := {}

   iMax := LEN( aStruc )
   FOR ii := 1 TO iMax
      nPosi := ASCAN(aDbfStruct,{|x| x[DBS_NAME] = aStruc[ii][DBS_NAME] } )
      IF nPosi > 0
         AADD(aRet, nPosi)
      ENDIF
   NEXT
RETURN aRet

so it must be a Array which Function return

---

when use "reduce" FIELDs in XBROWSE and call

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  oBrwDBF:EditSource( .T. )

it will open Form which include all FIELDs of DBF
how can i change to edit only FIELD that i define ?

---

i have try again Option FIELDS

@ 50, 2 XBROWSE oBrwDBF FIELDS Struc2Array( cAlias )
@ 50, 2 XBROWSE oBrwDBF FIELDS Struc2String( cAlias )

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STATIC FUNCTION Struc2String( cAlias )
LOCAL aStruc := SP_aDbfStruct()
LOCAL ii, iMax, cField, cRet := ""

   iMax := LEN( aStruc )
   FOR ii := 1 TO iMax
      cField := aStruc[ ii ] [ DBS_NAME ]
      //       cRet += CHR( 34 ) + cField + CHR( 34 )
      cRet += "'" + cAlias + "->" + cField + "'"
      //       cRet += cAlias +"->"+ cField
      IF ii <> iMax
         cRet += ", "
      ENDIF
   NEXT
RETURN cRet

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STATIC FUNCTION Struc2Array( cAlias )
LOCAL aStruc := SP_aDbfStruct()
LOCAL ii, iMax, cField, aRet := {}

   iMax := LEN( aStruc )
   FOR ii := 1 TO iMax
      cField := aStruc[ ii ] [ DBS_NAME ]
      AADD( aRet, cField )
   NEXT

RETURN aRet

both show all FIELDs of DBF + 1 "extra" Column ...

so how will it work right when use FIELDS and a Function

[nageswaragunupudi]

1) Important: Please do not use FIELDS clause. This was originally meant to facilitate easy migration from WBrowse.
Using COLUMNS clause allows us to to take full power of XBrowse. Using FIELDS clause makes XBrowse dumb

2) If we want to specify all columns of the DBF, there is no need for our program to read the structure and specify the column names.
Use the clause AUTOCOLS instead of COLUMNS .... clause.
When we use AUTOCOLS clause, XBrowse itself reads the DBSTRUCT() and builds all the columns suitably, including the sort orders.

Example:

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[code]@ r,c XBROWSE oBrw SIZE w,h PIXEL OF oDlg ;
DATASOURCE "aliasname" AUTOCOLS[/code] ;
<otherClauses>

Still just for academic interest, just to know how to generate column names from DBSTRUCT():

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@ r,c XBROWSE oBrw SIZE w,h PIXEL OF oDlg ;
DATASOURCE "CUSTOMER" ;
COLUMNS ArrTranspose( CUSTOMER->(DBSTRUCT()))[ 1 ] ....

though we do not recommend this because this is totally unnecessary

[nageswaragunupudi]

Interesting use of DBSTRUCT()

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  USE CUSTOMER
   aCols := ArrTranspose( DBSTRUCT() )[ 1 ]
   aCols := AShuffle( aCols, 2, 9 )

   DEFINE WINDOW oWnd
   @ 0,0 XBROWSE oBrw SIZE 0,0 PIXEL OF oWnd ;
      DATASOURCE "CUSTOMER" ;
      COLUMNS aCols ;
      CELL LINES NOBORDER

   oBrw:AutoFit()
   oBrw:CreateFromCode()

   oWnd:nWidth    := 900
   oWnd:nHeight   := 300

   ACTIVATE WINDOW oWnd CENTERED

   return nil
 

[karinha]

WOW. Super interesting. One can shuffle the content of xBrowse()

Many thanks.

Regards, saludos.

[nageswaragunupudi]

it will open Form which include all FIELDs of DBF
how can i change to edit only FIELD that i define ?

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METHOD EditSource( lNew, cFieldList, lNavigate, aInitVals )

[Jimmy]

hi,

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METHOD EditSource( lNew, cFieldList, lNavigate, aInitVals )

ah, ok thx for Answer

how does"cFieldList" look like and what Delimiter is used

would be nice if it also accept a Array with (reduce) Structure of DbStruct()

[Marc Venken]

Some info :

viewtopic.php?f=3&t=37097

[Jimmy]

hi Marc ,

Some info :
viewtopic.php?f=3&t=37097

ok, thx for link

[nageswaragunupudi]

how does"cFieldList" look like and what Delimiter is used

Comma delimited
Eg: "FIRST,CITY,SALARY,..."

We can easily convert an array like DbStruct() to list like this:
FW_ArrayAsList( ArrTranspose( aStruct )[ 1 ] )

[Jimmy]

hi,

Comma delimited
Eg: "FIRST,CITY,SALARY,..."

thx for Answer

We can easily convert an array like DbStruct() to list like this:
FW_ArrayAsList( ArrTranspose( aStruct )[ 1 ] )

ah, that is nice