Multiple sets on the same page

[rchipka]

Multiple sets on the same page

[rchipka]

Maybe if .data is called without any arguments it should reset the data object. Or maybe it would look more clear if the data object could be set by passing .data() an object instead of a function, then a reset would look like .data({}) or data(null). Yet another feature for a future release.

This should work for now:

.then(function(context, data, next) {
    next(context, {});
})

[rchipka]

In earlier versions of Osmosis .find would search the entire document. Currently, .find is relative to the previous context, so .find('aside') is actually looking in the .find('menu'). Having .find be relative to the current context might be slightly better from a performance standpoint, but obviously it's not clear enough that it's relative.

Maybe in the next version .find will be made to search the entire document and another command will be available for the cases where you specifically want to search in the current context. The question is the right name for the command. I think .child() would work but it doesn't imply a search.

For right now you can call .doc to reset the current context:

page = osmosis.get(pageUrl)

.find('menu')
.set({ 
    // get the <menu> links
})
.data(function() {
    // do something with the <menu> links
})

.doc()

.find('aside')
.set({ 
    // get the <aside> links
})
.data(function() {
    // do something with the <aside> links
})
.then(function() {
    // ... finally write everything to disk
});

[achimkoellner]

rc0x03, ah, that's what I was looking for! thank you.

One thing about that example is still a bit odd - when I use .doc() it seems to reset the context and i can find "aside" in a second run, but the 2nd .set().data() seems to merge the response parameter for .data() with the data of the first set. So looks like "data" is passed down the chain. Would there be a way to reset it as well?

eg. if the first call of .set() finds something link

{ link: 'myMenuLink1' } 

and the second .set() finds something like { }

{ otherLlink: 'myAsideLink1' } 

The parameter of the 2nd .data( function(parameter) {...} ) call looks like this

{ 
    link: 'myMenuLink1',
    otherLlink: 'myAsideLink1'
 } 

I tried to work around this with like this but it didn't seem to have helped:

.set(...)
.data(...)
.then(function(context, data, next) {
    delete data;
    next(context, data, next);
})

[achimkoellner]

thank you rc0x03 - this works as a workaround.

[specious]

I'm getting:

  .doc() // reset the context
   ^

TypeError: osmosis.parse(...).find(...).set(...).data(...).doc is not a function

osmosis 1.1.4

Was it removed?

[specious]

I've got a situation like @achimkoellner, I want to reset the data, so it doesn't accumulate.

[specious]

@rchipka, I'm successfully using your suggestion.

I think a function officially dedicated to clearing the data would be of great help.