Hi! You may want to take a look at the basics here: http://docs.couchdb.org/en/latest/couchapp/views/index.html and Cloudant has some interactive samples at: https://cloudant.com/for-developers/all_docs/
*Using map*: You may want to emit the letters and use keys to find the docs. *Not using map*: Name each doc something "smart", and use keys to find the docs. Br, Sinan On 31 December 2014 at 13:05, Mic <[email protected]> wrote: > Hi, > I tried to create a map function which should use the following conditions: > > - e.g. chr.no = 5 and chr.no = 6 > - chr.letter between two objects/dicts in chr are not the same and no X > > I have the following function but I do not know how to combine it with > `emit` > > var judge = function (no1, no2) { > var unexpect = "X"; > var letter1 = unexpect, letter2 = unexpect; > for (var i in this.chr) { > var chr = this.chr[i]; > if (chr.no == no1) { > letter1 = chr.letter; > } else if (chr.no == no2) { > letter2 = chr.letter; > } > } > if (letter1 != letter2 && letter1 != unexpect && letter2 != > unexpect) { > return true; > } > return false; > }; > > > CouchDB has the below content: > > > { > "total_rows":5, > "offset":0, > "rows":[ > { > "_id":"10", > "_rev":"3-5288068d2c4ef3e6a9d3f8ff4e3377dd", > "chr":[ > { > "letter":"T", > "no":4 > }, > { > "letter":"A", > "no":5 > }, > { > "letter":"X", > "no":6 > } > ] > }, > { > "_id":"14", > "_rev":"3-21300d06c31224416b8ff71b71b304d8", > "chr":[ > { > "letter":"T", > "no":4 > }, > { > "letter":"G", > "no":5 > }, > { > "letter":"G", > "no":6 > } > ] > }, > { > "_id":"7", > "_rev":"2-1516ba547bdd21724158bc854f39f66b", > "chr":[ > { > "letter":"C", > "no":5 > }, > { > "letter":"T", > "no":6 > } > ] > }, > { > "_id":"8", > "_rev":"2-750078ccc9e74616f33a2537e41b8414", > "chr":[ > { > "letter":"C", > "no":5 > }, > { > "letter":"T", > "no":6 > } > ] > }, > { > "_id":"9", > "_rev":"2-3d68352a2d98c56fd322ae674fb7c38a", > "chr":[ > { > "letter":"A", > "no":5 > }, > { > "letter":"G", > "no":6 > } > ] > } > ] > } > > How is it possible to write a map function combine with the above `judge` > function or maybe there is better way to do it? > > P.S. I also asked the same question here ( > > http://stackoverflow.com/questions/27688196/map-function-with-a-helper-function-in-couchdb > ) > > Thank you in advance. > > Mic >
