javascript - Underscore.js : matching string in deeply nested objects -
i need find out object in deep nested array contains string toys & games (the deepest object in nest).
i trying select right object with:
var arr = _.filter(data, function(obj) { return _.some(obj.ancestors, {'name': "toys & games"}); }); where data being passed in .filter is:
{ "browsenodeid":[ "11608080011" ], "name":[ "quadcopters & multirotors" ], "ancestors":[ { "browsenode":[ { "browsenodeid":[ "166583011" ], "name":[ "rc vehicles" ], "ancestors":[ { "browsenode":[ { "browsenodeid":[ "6925830011" ], "name":[ "rc vehicles & parts" ], "ancestors":[ { "browsenode":[ { "browsenodeid":[ "276729011" ], "name":[ "hobbies" ], "ancestors":[ { "browsenode":[ { "browsenodeid":[ "165795011" ], "name":[ "categories" ], "iscategoryroot":[ "1" ], "ancestors":[ { "browsenode":[ { "browsenodeid":[ "165793011" ], "name":[ "toys & games" ] } ] } ] } ] } ] } ] } ] } ] } ] } ] } ] }, { "browsenodeid":[ "3226142011" ], "name":[ "grown-up toys" ], "children":[ { "browsenode":[ { "browsenodeid":[ "3226143011" ], "name":[ "action & toy figures" ] }, { "browsenodeid":[ "3226145011" ], "name":[ "die-cast & toy vehicles" ] }, { "browsenodeid":[ "3226146011" ], "name":[ "games" ] }, { "browsenodeid":[ "3226148011" ], "name":[ "novelty & gag toys" ] }, { "browsenodeid":[ "3226149011" ], "name":[ "puzzles" ] }, { "browsenodeid":[ "5483953011" ], "name":[ "executive desk toys" ] } ] } ], "ancestors":[ { "browsenode":[ { "browsenodeid":[ "165795011" ], "name":[ "categories" ], "iscategoryroot":[ "1" ], "ancestors":[ { "browsenode":[ { "browsenodeid":[ "165793011" ], "name":[ "toys & games" ] } ] } ] } ] } ] }
i ended doing without underscore, async while loop instead:
function traversenodes(nodelist,findme,callbackmm){ var nodearr = []; //collect browse nodes async.eachseries(nodelist, function(item, callbackz) { var currentnode = item; var childnodeid = currentnode.browsenodeid[0]; //get first id in nest tree async.whilst( function () { if (currentnode.name && currentnode.name[0] == findme){ //we found string, stop traversing nodearr.push(childnodeid); return false; }else if (currentnode.ancestors){ //didn't find string, keep traversing currentnode = currentnode.ancestors[0].browsenode[0]; return true; } else { return false; } }, function (callback) { callback(); }, function (err) { if (err){ console.log('whilst error in search.js ',err); } callbackz(); } ); }, function done(){ if (nodearr.length > 0){ callbackmm(nodearr.tostring()); } else { console.log('error: no browsenodes found') } }); } 
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