Re: WebGrid Sorting

> I got tired of my application failing if I tried to sort a WebGrid
> column with some nil elements, so I have created two methods:
>
> WebGrid>>standardAscendingSortBlockForColumn: column
>     ^[:a :b|
>         | val1 val2 |
>         val1:=a perform: column aspect.
>         val2:=b perform: column aspect.
>         val1 isNil
>             ifTrue: [true]
>             ifFalse: [val2 isNil
>                 ifTrue: [false]
>                 ifFalse: [val1 < val2]]]
>
> and
>
> standardDescendingSortBlockForColumn: column
>     ^[:a :b|
>         | val1 val2 |
>         val1:=a perform: column aspect.
>         val2:=b perform: column aspect.
>         val1 isNil
>             ifTrue: [false]
>             ifFalse: [val2 isNil
>                 ifTrue: [true]
>                 ifFalse: [val1 > val2]]]
>
>
> (There is probably a more compact way to do this if I was more
> experienced)
>
> and have altered:
>
> WebGrid>>sortColumnsIfNessesary
>     | column sortBlock |
>      self sortColumn isNil ifTrue: [^nil].
>     column := self columns at: self sortColumn.
>     sortBlock := (self sortOrder = #ascending)
>         ifTrue: [ self standardAscendingSortBlockForColumn: column ]
>         ifFalse: [ self standardDescendingSortBlockForColumn:
> column ].
>     self collection: (SortedCollection withAll: self collection
> sortBlock: sortBlock).
>
> Is this generally useful to Aida, or should it just be a WebGrid
> subclass like WebDataGrid?
>
> I also have a WebGrid>>bindTo: method which will bind a WebGrid to an
> ODBCResultTable.  Would database components be generally useful to
> anyone else?  Probably not, unless you are planning on writing a
> DbVisualizer type of thing in Smalltalk (which I was thinking of doing
> as a more "business oriented" example).

>
> This leads me to ask about future component naming conventions if
> people start contributing separately packaged Aida components.  Would
> you envision something like
>
> Aida-Database
> or
> Aida-Database Components
> or
> Aida-Components-Database?
>
> Just wondering.  It would be great if the Aida Squeaksource would
> become a repository for new components that could be plugged in to
> your application as needed!
>
> Rob
> _______________________________________________
> Aida mailing list
> Aida@...
> http://lists.aidaweb.si/mailman/listinfo/aida