Create object array according to changing number of properties












-1















I want to handle the array according to number of properties for a category.



I have created an array(array_a) using available properties, and I group that array value according to properties(array_colors,array_sizes). for example now i have two arrays 'array_colors' and 'array_sizes', so in my code I for loop them and created an object array(array_b).
but my issue is I want to handle dynamic number of properties.



var array_a = [
{
"color":{
"id":2,
"name":"Green"
}
},
{
"color":{
"id":3,
"name":"Yellow"
}
},
{
"size":{
"id":5,
"name":"16"
}
},
{
"size":{
"id":6,
"name":"17"
}
},
{
"size":{
"id":7,
"name":"18"
}
}
];
array_colors = array_a.filter(function(myObject) {
return myObject.hasOwnProperty('color');
});

array_sizes = array_a.filter(function(myObject) {
return myObject.hasOwnProperty('size');
});

array_b = ;

for(var i = 0; i < array_colors.length; i++) {
for (var j = 0; j < array_sizes.length; j++) {
array_b.push( {
"is_available":true,
"qty":0,
"price":0,
"color":array_colors[i],
"size":array_sizes[j]
});
}
}


array_b = [
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":2,
"name":"Green"
},
"size":{
"id":5,
"name":"16",
"text":"16"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":2,
"name":"Green"
},
"size":{
"id":6,
"name":"17",
"text":"17"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":2,
"name":"Green"
},
"size":{
"id":7,
"name":"18",
"text":"18"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":3,
"name":"Yellow"
},
"size":{
"id":5,
"name":"16",
"text":"16"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":3,
"name":"Yellow"
},
"size":{
"id":6,
"name":"17",
"text":"17"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":3,
"name":"Yellow"
},
"size":{
"id":7,
"name":"18",
"text":"18"
}
}
]


my expected array as above.I want to handle the properties such as color,size dynamically.










share|improve this question




















  • 2





    Are you sure that's your expected output? 'red' is nowhere in your input (and there don't seem to be many of the properties in the object you're pushing to array_b?)

    – CertainPerformance
    Dec 31 '18 at 9:56













  • sorry, i don't understand what you mean

    – chathu
    Dec 31 '18 at 10:43











  • You say your expected output is array_b = [ {'color':'red','size':16}, {'color':'red','size':17}, {'color':'green','size':16}, {'color':'green','size':17} ] , but where does 'color':'red' come from? 'red' isn't anywhere else in the script, why does it magically appear in the output? Also, green is capitalized in your input, did you want something to call toLowerCase on the color when turning it into array_b?

    – CertainPerformance
    Dec 31 '18 at 10:45













  • Your expected output also doesn't contain any properties other than color and size, but your .push attempt has an object that has is_available, qty, and price. Are those properties actually expected in your output or not? Please clarify your question

    – CertainPerformance
    Dec 31 '18 at 10:47











  • sorry, by mistake i have put 'red'. by the way i got the answer. thank you for your kind consideration

    – chathu
    Dec 31 '18 at 11:02
















-1















I want to handle the array according to number of properties for a category.



I have created an array(array_a) using available properties, and I group that array value according to properties(array_colors,array_sizes). for example now i have two arrays 'array_colors' and 'array_sizes', so in my code I for loop them and created an object array(array_b).
but my issue is I want to handle dynamic number of properties.



var array_a = [
{
"color":{
"id":2,
"name":"Green"
}
},
{
"color":{
"id":3,
"name":"Yellow"
}
},
{
"size":{
"id":5,
"name":"16"
}
},
{
"size":{
"id":6,
"name":"17"
}
},
{
"size":{
"id":7,
"name":"18"
}
}
];
array_colors = array_a.filter(function(myObject) {
return myObject.hasOwnProperty('color');
});

array_sizes = array_a.filter(function(myObject) {
return myObject.hasOwnProperty('size');
});

array_b = ;

for(var i = 0; i < array_colors.length; i++) {
for (var j = 0; j < array_sizes.length; j++) {
array_b.push( {
"is_available":true,
"qty":0,
"price":0,
"color":array_colors[i],
"size":array_sizes[j]
});
}
}


array_b = [
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":2,
"name":"Green"
},
"size":{
"id":5,
"name":"16",
"text":"16"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":2,
"name":"Green"
},
"size":{
"id":6,
"name":"17",
"text":"17"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":2,
"name":"Green"
},
"size":{
"id":7,
"name":"18",
"text":"18"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":3,
"name":"Yellow"
},
"size":{
"id":5,
"name":"16",
"text":"16"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":3,
"name":"Yellow"
},
"size":{
"id":6,
"name":"17",
"text":"17"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":3,
"name":"Yellow"
},
"size":{
"id":7,
"name":"18",
"text":"18"
}
}
]


my expected array as above.I want to handle the properties such as color,size dynamically.










share|improve this question




















  • 2





    Are you sure that's your expected output? 'red' is nowhere in your input (and there don't seem to be many of the properties in the object you're pushing to array_b?)

    – CertainPerformance
    Dec 31 '18 at 9:56













  • sorry, i don't understand what you mean

    – chathu
    Dec 31 '18 at 10:43











  • You say your expected output is array_b = [ {'color':'red','size':16}, {'color':'red','size':17}, {'color':'green','size':16}, {'color':'green','size':17} ] , but where does 'color':'red' come from? 'red' isn't anywhere else in the script, why does it magically appear in the output? Also, green is capitalized in your input, did you want something to call toLowerCase on the color when turning it into array_b?

    – CertainPerformance
    Dec 31 '18 at 10:45













  • Your expected output also doesn't contain any properties other than color and size, but your .push attempt has an object that has is_available, qty, and price. Are those properties actually expected in your output or not? Please clarify your question

    – CertainPerformance
    Dec 31 '18 at 10:47











  • sorry, by mistake i have put 'red'. by the way i got the answer. thank you for your kind consideration

    – chathu
    Dec 31 '18 at 11:02














-1












-1








-1








I want to handle the array according to number of properties for a category.



I have created an array(array_a) using available properties, and I group that array value according to properties(array_colors,array_sizes). for example now i have two arrays 'array_colors' and 'array_sizes', so in my code I for loop them and created an object array(array_b).
but my issue is I want to handle dynamic number of properties.



var array_a = [
{
"color":{
"id":2,
"name":"Green"
}
},
{
"color":{
"id":3,
"name":"Yellow"
}
},
{
"size":{
"id":5,
"name":"16"
}
},
{
"size":{
"id":6,
"name":"17"
}
},
{
"size":{
"id":7,
"name":"18"
}
}
];
array_colors = array_a.filter(function(myObject) {
return myObject.hasOwnProperty('color');
});

array_sizes = array_a.filter(function(myObject) {
return myObject.hasOwnProperty('size');
});

array_b = ;

for(var i = 0; i < array_colors.length; i++) {
for (var j = 0; j < array_sizes.length; j++) {
array_b.push( {
"is_available":true,
"qty":0,
"price":0,
"color":array_colors[i],
"size":array_sizes[j]
});
}
}


array_b = [
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":2,
"name":"Green"
},
"size":{
"id":5,
"name":"16",
"text":"16"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":2,
"name":"Green"
},
"size":{
"id":6,
"name":"17",
"text":"17"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":2,
"name":"Green"
},
"size":{
"id":7,
"name":"18",
"text":"18"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":3,
"name":"Yellow"
},
"size":{
"id":5,
"name":"16",
"text":"16"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":3,
"name":"Yellow"
},
"size":{
"id":6,
"name":"17",
"text":"17"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":3,
"name":"Yellow"
},
"size":{
"id":7,
"name":"18",
"text":"18"
}
}
]


my expected array as above.I want to handle the properties such as color,size dynamically.










share|improve this question
















I want to handle the array according to number of properties for a category.



I have created an array(array_a) using available properties, and I group that array value according to properties(array_colors,array_sizes). for example now i have two arrays 'array_colors' and 'array_sizes', so in my code I for loop them and created an object array(array_b).
but my issue is I want to handle dynamic number of properties.



var array_a = [
{
"color":{
"id":2,
"name":"Green"
}
},
{
"color":{
"id":3,
"name":"Yellow"
}
},
{
"size":{
"id":5,
"name":"16"
}
},
{
"size":{
"id":6,
"name":"17"
}
},
{
"size":{
"id":7,
"name":"18"
}
}
];
array_colors = array_a.filter(function(myObject) {
return myObject.hasOwnProperty('color');
});

array_sizes = array_a.filter(function(myObject) {
return myObject.hasOwnProperty('size');
});

array_b = ;

for(var i = 0; i < array_colors.length; i++) {
for (var j = 0; j < array_sizes.length; j++) {
array_b.push( {
"is_available":true,
"qty":0,
"price":0,
"color":array_colors[i],
"size":array_sizes[j]
});
}
}


array_b = [
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":2,
"name":"Green"
},
"size":{
"id":5,
"name":"16",
"text":"16"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":2,
"name":"Green"
},
"size":{
"id":6,
"name":"17",
"text":"17"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":2,
"name":"Green"
},
"size":{
"id":7,
"name":"18",
"text":"18"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":3,
"name":"Yellow"
},
"size":{
"id":5,
"name":"16",
"text":"16"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":3,
"name":"Yellow"
},
"size":{
"id":6,
"name":"17",
"text":"17"
}
},
{
"is_available":true,
"qty":0,
"price":0,
"color":{
"id":3,
"name":"Yellow"
},
"size":{
"id":7,
"name":"18",
"text":"18"
}
}
]


my expected array as above.I want to handle the properties such as color,size dynamically.







javascript vue.js lodash






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Jan 2 at 5:25







chathu

















asked Dec 31 '18 at 9:53









chathuchathu

113




113








  • 2





    Are you sure that's your expected output? 'red' is nowhere in your input (and there don't seem to be many of the properties in the object you're pushing to array_b?)

    – CertainPerformance
    Dec 31 '18 at 9:56













  • sorry, i don't understand what you mean

    – chathu
    Dec 31 '18 at 10:43











  • You say your expected output is array_b = [ {'color':'red','size':16}, {'color':'red','size':17}, {'color':'green','size':16}, {'color':'green','size':17} ] , but where does 'color':'red' come from? 'red' isn't anywhere else in the script, why does it magically appear in the output? Also, green is capitalized in your input, did you want something to call toLowerCase on the color when turning it into array_b?

    – CertainPerformance
    Dec 31 '18 at 10:45













  • Your expected output also doesn't contain any properties other than color and size, but your .push attempt has an object that has is_available, qty, and price. Are those properties actually expected in your output or not? Please clarify your question

    – CertainPerformance
    Dec 31 '18 at 10:47











  • sorry, by mistake i have put 'red'. by the way i got the answer. thank you for your kind consideration

    – chathu
    Dec 31 '18 at 11:02














  • 2





    Are you sure that's your expected output? 'red' is nowhere in your input (and there don't seem to be many of the properties in the object you're pushing to array_b?)

    – CertainPerformance
    Dec 31 '18 at 9:56













  • sorry, i don't understand what you mean

    – chathu
    Dec 31 '18 at 10:43











  • You say your expected output is array_b = [ {'color':'red','size':16}, {'color':'red','size':17}, {'color':'green','size':16}, {'color':'green','size':17} ] , but where does 'color':'red' come from? 'red' isn't anywhere else in the script, why does it magically appear in the output? Also, green is capitalized in your input, did you want something to call toLowerCase on the color when turning it into array_b?

    – CertainPerformance
    Dec 31 '18 at 10:45













  • Your expected output also doesn't contain any properties other than color and size, but your .push attempt has an object that has is_available, qty, and price. Are those properties actually expected in your output or not? Please clarify your question

    – CertainPerformance
    Dec 31 '18 at 10:47











  • sorry, by mistake i have put 'red'. by the way i got the answer. thank you for your kind consideration

    – chathu
    Dec 31 '18 at 11:02








2




2





Are you sure that's your expected output? 'red' is nowhere in your input (and there don't seem to be many of the properties in the object you're pushing to array_b?)

– CertainPerformance
Dec 31 '18 at 9:56







Are you sure that's your expected output? 'red' is nowhere in your input (and there don't seem to be many of the properties in the object you're pushing to array_b?)

– CertainPerformance
Dec 31 '18 at 9:56















sorry, i don't understand what you mean

– chathu
Dec 31 '18 at 10:43





sorry, i don't understand what you mean

– chathu
Dec 31 '18 at 10:43













You say your expected output is array_b = [ {'color':'red','size':16}, {'color':'red','size':17}, {'color':'green','size':16}, {'color':'green','size':17} ] , but where does 'color':'red' come from? 'red' isn't anywhere else in the script, why does it magically appear in the output? Also, green is capitalized in your input, did you want something to call toLowerCase on the color when turning it into array_b?

– CertainPerformance
Dec 31 '18 at 10:45







You say your expected output is array_b = [ {'color':'red','size':16}, {'color':'red','size':17}, {'color':'green','size':16}, {'color':'green','size':17} ] , but where does 'color':'red' come from? 'red' isn't anywhere else in the script, why does it magically appear in the output? Also, green is capitalized in your input, did you want something to call toLowerCase on the color when turning it into array_b?

– CertainPerformance
Dec 31 '18 at 10:45















Your expected output also doesn't contain any properties other than color and size, but your .push attempt has an object that has is_available, qty, and price. Are those properties actually expected in your output or not? Please clarify your question

– CertainPerformance
Dec 31 '18 at 10:47





Your expected output also doesn't contain any properties other than color and size, but your .push attempt has an object that has is_available, qty, and price. Are those properties actually expected in your output or not? Please clarify your question

– CertainPerformance
Dec 31 '18 at 10:47













sorry, by mistake i have put 'red'. by the way i got the answer. thank you for your kind consideration

– chathu
Dec 31 '18 at 11:02





sorry, by mistake i have put 'red'. by the way i got the answer. thank you for your kind consideration

– chathu
Dec 31 '18 at 11:02












1 Answer
1






active

oldest

votes


















0














using _.mergeWith() you can merge the properties to a single object with the property names as the keys, and an array of values for each key.
Then reduce the object to an array of objects using _.flatMap() (or Array.flatMap():






const array_a = [{"color":{"id":2,"name":"Green"}},{"color":{"id":3,"name":"Yellow"}},{"size":{"id":5,"name":"16"}},{"size":{"id":6,"name":"17"}},{"size":{"id":7,"name":"18"}}];

const getAllCombinations = _.flow([
arr => _.mergeWith({}, ...arr, (o, s) => _.isArray(o) ? [...o, s.name] : [s.name]),
props => _.reduce(props, (r, values, k) =>
_.isEmpty(r) ?
values.map(v => ({
is_available: true,
qty: 0,
price: 0,
[k]: v,
})) :
_.flatMap(r, o => values.map(v => ({
...o,
[k]: v
}))), )
]);



console.log(getAllCombinations(array_a));

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>








share|improve this answer


























  • nice and quick answer. thank you for your answer

    – chathu
    Dec 31 '18 at 10:58











  • You're welcome :) Don't forget to accept.

    – Ori Drori
    Dec 31 '18 at 11:09











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1 Answer
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active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









0














using _.mergeWith() you can merge the properties to a single object with the property names as the keys, and an array of values for each key.
Then reduce the object to an array of objects using _.flatMap() (or Array.flatMap():






const array_a = [{"color":{"id":2,"name":"Green"}},{"color":{"id":3,"name":"Yellow"}},{"size":{"id":5,"name":"16"}},{"size":{"id":6,"name":"17"}},{"size":{"id":7,"name":"18"}}];

const getAllCombinations = _.flow([
arr => _.mergeWith({}, ...arr, (o, s) => _.isArray(o) ? [...o, s.name] : [s.name]),
props => _.reduce(props, (r, values, k) =>
_.isEmpty(r) ?
values.map(v => ({
is_available: true,
qty: 0,
price: 0,
[k]: v,
})) :
_.flatMap(r, o => values.map(v => ({
...o,
[k]: v
}))), )
]);



console.log(getAllCombinations(array_a));

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>








share|improve this answer


























  • nice and quick answer. thank you for your answer

    – chathu
    Dec 31 '18 at 10:58











  • You're welcome :) Don't forget to accept.

    – Ori Drori
    Dec 31 '18 at 11:09
















0














using _.mergeWith() you can merge the properties to a single object with the property names as the keys, and an array of values for each key.
Then reduce the object to an array of objects using _.flatMap() (or Array.flatMap():






const array_a = [{"color":{"id":2,"name":"Green"}},{"color":{"id":3,"name":"Yellow"}},{"size":{"id":5,"name":"16"}},{"size":{"id":6,"name":"17"}},{"size":{"id":7,"name":"18"}}];

const getAllCombinations = _.flow([
arr => _.mergeWith({}, ...arr, (o, s) => _.isArray(o) ? [...o, s.name] : [s.name]),
props => _.reduce(props, (r, values, k) =>
_.isEmpty(r) ?
values.map(v => ({
is_available: true,
qty: 0,
price: 0,
[k]: v,
})) :
_.flatMap(r, o => values.map(v => ({
...o,
[k]: v
}))), )
]);



console.log(getAllCombinations(array_a));

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>








share|improve this answer


























  • nice and quick answer. thank you for your answer

    – chathu
    Dec 31 '18 at 10:58











  • You're welcome :) Don't forget to accept.

    – Ori Drori
    Dec 31 '18 at 11:09














0












0








0







using _.mergeWith() you can merge the properties to a single object with the property names as the keys, and an array of values for each key.
Then reduce the object to an array of objects using _.flatMap() (or Array.flatMap():






const array_a = [{"color":{"id":2,"name":"Green"}},{"color":{"id":3,"name":"Yellow"}},{"size":{"id":5,"name":"16"}},{"size":{"id":6,"name":"17"}},{"size":{"id":7,"name":"18"}}];

const getAllCombinations = _.flow([
arr => _.mergeWith({}, ...arr, (o, s) => _.isArray(o) ? [...o, s.name] : [s.name]),
props => _.reduce(props, (r, values, k) =>
_.isEmpty(r) ?
values.map(v => ({
is_available: true,
qty: 0,
price: 0,
[k]: v,
})) :
_.flatMap(r, o => values.map(v => ({
...o,
[k]: v
}))), )
]);



console.log(getAllCombinations(array_a));

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>








share|improve this answer















using _.mergeWith() you can merge the properties to a single object with the property names as the keys, and an array of values for each key.
Then reduce the object to an array of objects using _.flatMap() (or Array.flatMap():






const array_a = [{"color":{"id":2,"name":"Green"}},{"color":{"id":3,"name":"Yellow"}},{"size":{"id":5,"name":"16"}},{"size":{"id":6,"name":"17"}},{"size":{"id":7,"name":"18"}}];

const getAllCombinations = _.flow([
arr => _.mergeWith({}, ...arr, (o, s) => _.isArray(o) ? [...o, s.name] : [s.name]),
props => _.reduce(props, (r, values, k) =>
_.isEmpty(r) ?
values.map(v => ({
is_available: true,
qty: 0,
price: 0,
[k]: v,
})) :
_.flatMap(r, o => values.map(v => ({
...o,
[k]: v
}))), )
]);



console.log(getAllCombinations(array_a));

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>








const array_a = [{"color":{"id":2,"name":"Green"}},{"color":{"id":3,"name":"Yellow"}},{"size":{"id":5,"name":"16"}},{"size":{"id":6,"name":"17"}},{"size":{"id":7,"name":"18"}}];

const getAllCombinations = _.flow([
arr => _.mergeWith({}, ...arr, (o, s) => _.isArray(o) ? [...o, s.name] : [s.name]),
props => _.reduce(props, (r, values, k) =>
_.isEmpty(r) ?
values.map(v => ({
is_available: true,
qty: 0,
price: 0,
[k]: v,
})) :
_.flatMap(r, o => values.map(v => ({
...o,
[k]: v
}))), )
]);



console.log(getAllCombinations(array_a));

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>





const array_a = [{"color":{"id":2,"name":"Green"}},{"color":{"id":3,"name":"Yellow"}},{"size":{"id":5,"name":"16"}},{"size":{"id":6,"name":"17"}},{"size":{"id":7,"name":"18"}}];

const getAllCombinations = _.flow([
arr => _.mergeWith({}, ...arr, (o, s) => _.isArray(o) ? [...o, s.name] : [s.name]),
props => _.reduce(props, (r, values, k) =>
_.isEmpty(r) ?
values.map(v => ({
is_available: true,
qty: 0,
price: 0,
[k]: v,
})) :
_.flatMap(r, o => values.map(v => ({
...o,
[k]: v
}))), )
]);



console.log(getAllCombinations(array_a));

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>






share|improve this answer














share|improve this answer



share|improve this answer








edited Dec 31 '18 at 11:20

























answered Dec 31 '18 at 10:25









Ori DroriOri Drori

76.7k138192




76.7k138192













  • nice and quick answer. thank you for your answer

    – chathu
    Dec 31 '18 at 10:58











  • You're welcome :) Don't forget to accept.

    – Ori Drori
    Dec 31 '18 at 11:09



















  • nice and quick answer. thank you for your answer

    – chathu
    Dec 31 '18 at 10:58











  • You're welcome :) Don't forget to accept.

    – Ori Drori
    Dec 31 '18 at 11:09

















nice and quick answer. thank you for your answer

– chathu
Dec 31 '18 at 10:58





nice and quick answer. thank you for your answer

– chathu
Dec 31 '18 at 10:58













You're welcome :) Don't forget to accept.

– Ori Drori
Dec 31 '18 at 11:09





You're welcome :) Don't forget to accept.

– Ori Drori
Dec 31 '18 at 11:09


















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