Mongoose: query with array of datas and return same number of result

I have an csv which is having category columns there are some category names which are repeated so I've made an array with all category names like :

var abc = ['A','A','B','A'] //array with duplicate data

as in this example, A is repeating so when am query an document with that:

CollectionA.find(
 categoryName: abc
, function(err, data)
 if(err)
 console.log(err);
 
 console.log(data);
);

but it just returns 2 documents for A & B but I want the same number of rows as an array is of length I want output should return the same number of documents.

edited Nov 14 '18 at 18:32

mickl

13.6k51536

asked Nov 14 '18 at 13:56

Ankit Kumar

400310

Get the unique one and then using array#map generate all the data.

– Hassan Imam
Nov 14 '18 at 13:59

can you please tell me how?

– Ankit Kumar
Nov 14 '18 at 14:11

Could you explain with the sample documents

– Anthony Winzlet
Nov 14 '18 at 15:38

add a comment |

I have an csv which is having category columns there are some category names which are repeated so I've made an array with all category names like :

var abc = ['A','A','B','A'] //array with duplicate data

as in this example, A is repeating so when am query an document with that:

CollectionA.find(
 categoryName: abc
, function(err, data)
 if(err)
 console.log(err);
 
 console.log(data);
);

but it just returns 2 documents for A & B but I want the same number of rows as an array is of length I want output should return the same number of documents.

edited Nov 14 '18 at 18:32

mickl

13.6k51536

asked Nov 14 '18 at 13:56

Ankit Kumar

400310

Get the unique one and then using array#map generate all the data.

– Hassan Imam
Nov 14 '18 at 13:59

can you please tell me how?

– Ankit Kumar
Nov 14 '18 at 14:11

Could you explain with the sample documents

– Anthony Winzlet
Nov 14 '18 at 15:38

add a comment |

I have an csv which is having category columns there are some category names which are repeated so I've made an array with all category names like :

var abc = ['A','A','B','A'] //array with duplicate data

as in this example, A is repeating so when am query an document with that:

CollectionA.find(
 categoryName: abc
, function(err, data)
 if(err)
 console.log(err);
 
 console.log(data);
);

but it just returns 2 documents for A & B but I want the same number of rows as an array is of length I want output should return the same number of documents.

edited Nov 14 '18 at 18:32

mickl

13.6k51536

asked Nov 14 '18 at 13:56

Ankit Kumar

400310

I have an csv which is having category columns there are some category names which are repeated so I've made an array with all category names like :

var abc = ['A','A','B','A'] //array with duplicate data

as in this example, A is repeating so when am query an document with that:

CollectionA.find(
 categoryName: abc
, function(err, data)
 if(err)
 console.log(err);
 
 console.log(data);
);

but it just returns 2 documents for A & B but I want the same number of rows as an array is of length I want output should return the same number of documents.

javascript arrays node.js mongodb mongoose

edited Nov 14 '18 at 18:32

mickl

13.6k51536

asked Nov 14 '18 at 13:56

Ankit Kumar

400310

edited Nov 14 '18 at 18:32

mickl

13.6k51536

asked Nov 14 '18 at 13:56

Ankit Kumar

400310

edited Nov 14 '18 at 18:32

mickl

13.6k51536

edited Nov 14 '18 at 18:32

mickl

13.6k51536

edited Nov 14 '18 at 18:32

mickl

13.6k51536

asked Nov 14 '18 at 13:56

Ankit Kumar

400310

asked Nov 14 '18 at 13:56

Ankit Kumar

400310

asked Nov 14 '18 at 13:56

Ankit Kumar

400310

Get the unique one and then using array#map generate all the data.

– Hassan Imam
Nov 14 '18 at 13:59

can you please tell me how?

– Ankit Kumar
Nov 14 '18 at 14:11

Could you explain with the sample documents

– Anthony Winzlet
Nov 14 '18 at 15:38

add a comment |

Get the unique one and then using array#map generate all the data.

– Hassan Imam
Nov 14 '18 at 13:59

can you please tell me how?

– Ankit Kumar
Nov 14 '18 at 14:11

Could you explain with the sample documents

– Anthony Winzlet
Nov 14 '18 at 15:38

Get the unique one and then using array#map generate all the data.

– Hassan Imam
Nov 14 '18 at 13:59

can you please tell me how?

– Ankit Kumar
Nov 14 '18 at 14:11

Could you explain with the sample documents

– Anthony Winzlet
Nov 14 '18 at 15:38

add a comment |

1 Answer
1

active

oldest

votes

You can simply duplicate results in callback using Array.map(), try:

var abc = ['A','A','B','A']
CollectionA.find( categoryName: abc , function(err, data)
 if(err)
 console.log(err);
 
 data = abc.map(category => data.find(d => d.category_name === category));
 console.log(data);
);

answered Nov 14 '18 at 18:13

mickl

13.6k51536

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

You can simply duplicate results in callback using Array.map(), try:

var abc = ['A','A','B','A']
CollectionA.find( categoryName: abc , function(err, data)
 if(err)
 console.log(err);
 
 data = abc.map(category => data.find(d => d.category_name === category));
 console.log(data);
);

answered Nov 14 '18 at 18:13

mickl

13.6k51536

add a comment |

You can simply duplicate results in callback using Array.map(), try:

var abc = ['A','A','B','A']
CollectionA.find( categoryName: abc , function(err, data)
 if(err)
 console.log(err);
 
 data = abc.map(category => data.find(d => d.category_name === category));
 console.log(data);
);

answered Nov 14 '18 at 18:13

mickl

13.6k51536

add a comment |

You can simply duplicate results in callback using Array.map(), try:

var abc = ['A','A','B','A']
CollectionA.find( categoryName: abc , function(err, data)
 if(err)
 console.log(err);
 
 data = abc.map(category => data.find(d => d.category_name === category));
 console.log(data);
);

answered Nov 14 '18 at 18:13

mickl

13.6k51536

You can simply duplicate results in callback using Array.map(), try:

var abc = ['A','A','B','A']
CollectionA.find( categoryName: abc , function(err, data)
 if(err)
 console.log(err);
 
 data = abc.map(category => data.find(d => d.category_name === category));
 console.log(data);
);

answered Nov 14 '18 at 18:13

mickl

13.6k51536

answered Nov 14 '18 at 18:13

mickl

13.6k51536

answered Nov 14 '18 at 18:13

mickl

13.6k51536

answered Nov 14 '18 at 18:13

mickl

13.6k51536

add a comment |

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