node js -how to delete particular

node js -how to delete particular _id data from array

this is my delete function route.js

router.delete("/qus/:id/answers/:answersId", function(req, res) {

        Forum.findOneAndUpdate({ _id: req.params.id }, {

                $pull: {

                    "answers" : { "answers._id": req.body.answersId }

                }

            }, { safe: true, multi: true },

            function(err,result) {

                if (err) {

                    console.log(err);

                    res.json({msg:"somethong went wrong"})

                }

                else {

                   res.json({msg:"success"});

                  // res.redirect("/qus/" + foundAnimal._id + "/answers");

                }

            });

    });

my api look like

{

  "success": true,

  "forums": [

    {

      "createdAt": "2018-11-26T05:26:37.829Z",

      "likes": 0,

      "likedBy": ,

      "dislikes": 0,

      "dislikedBy": ,

      "_id": "5bfb84776cd9ea0ebc3db87b",

      "title": "how to apply visa",

      "body": "student visa requirement

      "qus_comments": ,

      "answers": [

        {

          "createdAt": "2018-11-26T06:59:21.840Z",

          "likesAnswer": 0,

          "likedAnswerBy": ,

          "dislikesAnswer": 0,

          "dislikedAnswerBy": ,

          "_id": "5bfb99eb21a1911650eba0d9",

          "content": "asdfghjk",

        },

        {

          "createdAt": "2018-11-26T06:59:21.840Z",

          "likesAnswer": 0,

          "likedAnswerBy": ,

          "dislikesAnswer": 0,

          "dislikedAnswerBy": ,

          "_id": "5bfb99f321a1911650eba0da",

          "content": "refersadfghj",

        }

      ],

      "__v": 13

    }

  ]

}

my delete function working , this function delete whole answers array, but i want delete any particular id in this answers array. please help me. i don't know , how to implement this one . if anyone know please help me.

edited Nov 27 '18 at 6:06

asked Nov 26 '18 at 7:15

indu ECE

407

add a comment |

this is my delete function route.js

router.delete("/qus/:id/answers/:answersId", function(req, res) {

        Forum.findOneAndUpdate({ _id: req.params.id }, {

                $pull: {

                    "answers" : { "answers._id": req.body.answersId }

                }

            }, { safe: true, multi: true },

            function(err,result) {

                if (err) {

                    console.log(err);

                    res.json({msg:"somethong went wrong"})

                }

                else {

                   res.json({msg:"success"});

                  // res.redirect("/qus/" + foundAnimal._id + "/answers");

                }

            });

    });

my api look like

{

  "success": true,

  "forums": [

    {

      "createdAt": "2018-11-26T05:26:37.829Z",

      "likes": 0,

      "likedBy": ,

      "dislikes": 0,

      "dislikedBy": ,

      "_id": "5bfb84776cd9ea0ebc3db87b",

      "title": "how to apply visa",

      "body": "student visa requirement

      "qus_comments": ,

      "answers": [

        {

          "createdAt": "2018-11-26T06:59:21.840Z",

          "likesAnswer": 0,

          "likedAnswerBy": ,

          "dislikesAnswer": 0,

          "dislikedAnswerBy": ,

          "_id": "5bfb99eb21a1911650eba0d9",

          "content": "asdfghjk",

        },

        {

          "createdAt": "2018-11-26T06:59:21.840Z",

          "likesAnswer": 0,

          "likedAnswerBy": ,

          "dislikesAnswer": 0,

          "dislikedAnswerBy": ,

          "_id": "5bfb99f321a1911650eba0da",

          "content": "refersadfghj",

        }

      ],

      "__v": 13

    }

  ]

}

edited Nov 27 '18 at 6:06

asked Nov 26 '18 at 7:15

indu ECE

407

add a comment |

this is my delete function route.js

router.delete("/qus/:id/answers/:answersId", function(req, res) {

        Forum.findOneAndUpdate({ _id: req.params.id }, {

                $pull: {

                    "answers" : { "answers._id": req.body.answersId }

                }

            }, { safe: true, multi: true },

            function(err,result) {

                if (err) {

                    console.log(err);

                    res.json({msg:"somethong went wrong"})

                }

                else {

                   res.json({msg:"success"});

                  // res.redirect("/qus/" + foundAnimal._id + "/answers");

                }

            });

    });

my api look like

{

  "success": true,

  "forums": [

    {

      "createdAt": "2018-11-26T05:26:37.829Z",

      "likes": 0,

      "likedBy": ,

      "dislikes": 0,

      "dislikedBy": ,

      "_id": "5bfb84776cd9ea0ebc3db87b",

      "title": "how to apply visa",

      "body": "student visa requirement

      "qus_comments": ,

      "answers": [

        {

          "createdAt": "2018-11-26T06:59:21.840Z",

          "likesAnswer": 0,

          "likedAnswerBy": ,

          "dislikesAnswer": 0,

          "dislikedAnswerBy": ,

          "_id": "5bfb99eb21a1911650eba0d9",

          "content": "asdfghjk",

        },

        {

          "createdAt": "2018-11-26T06:59:21.840Z",

          "likesAnswer": 0,

          "likedAnswerBy": ,

          "dislikesAnswer": 0,

          "dislikedAnswerBy": ,

          "_id": "5bfb99f321a1911650eba0da",

          "content": "refersadfghj",

        }

      ],

      "__v": 13

    }

  ]

}

edited Nov 27 '18 at 6:06

asked Nov 26 '18 at 7:15

indu ECE

407

this is my delete function route.js

router.delete("/qus/:id/answers/:answersId", function(req, res) {

        Forum.findOneAndUpdate({ _id: req.params.id }, {

                $pull: {

                    "answers" : { "answers._id": req.body.answersId }

                }

            }, { safe: true, multi: true },

            function(err,result) {

                if (err) {

                    console.log(err);

                    res.json({msg:"somethong went wrong"})

                }

                else {

                   res.json({msg:"success"});

                  // res.redirect("/qus/" + foundAnimal._id + "/answers");

                }

            });

    });

my api look like

{

  "success": true,

  "forums": [

    {

      "createdAt": "2018-11-26T05:26:37.829Z",

      "likes": 0,

      "likedBy": ,

      "dislikes": 0,

      "dislikedBy": ,

      "_id": "5bfb84776cd9ea0ebc3db87b",

      "title": "how to apply visa",

      "body": "student visa requirement

      "qus_comments": ,

      "answers": [

        {

          "createdAt": "2018-11-26T06:59:21.840Z",

          "likesAnswer": 0,

          "likedAnswerBy": ,

          "dislikesAnswer": 0,

          "dislikedAnswerBy": ,

          "_id": "5bfb99eb21a1911650eba0d9",

          "content": "asdfghjk",

        },

        {

          "createdAt": "2018-11-26T06:59:21.840Z",

          "likesAnswer": 0,

          "likedAnswerBy": ,

          "dislikesAnswer": 0,

          "dislikedAnswerBy": ,

          "_id": "5bfb99f321a1911650eba0da",

          "content": "refersadfghj",

        }

      ],

      "__v": 13

    }

  ]

}

node.js mongodb express

edited Nov 27 '18 at 6:06

asked Nov 26 '18 at 7:15

indu ECE

407

edited Nov 27 '18 at 6:06

asked Nov 26 '18 at 7:15

indu ECE

407

edited Nov 27 '18 at 6:06

asked Nov 26 '18 at 7:15

indu ECE

407

asked Nov 26 '18 at 7:15

indu ECE

407

asked Nov 26 '18 at 7:15

indu ECE

407

add a comment |

1 Answer
1

active

oldest

votes

You need to use answers._id directly when you are using $pull for the given data structure you have:

Forum.findOneAndUpdate({_id: req.params.id}, {

  $pull: {"answers._id": req.body.answersId}

 },{ safe: true, multi: true },

 function(err,result) {

  if (err) {

      console.log(err);

      res.json({msg:"somethong went wrong"})

  }

  else {

     res.json({msg:"success"});

    // res.redirect("/qus/" + foundAnimal._id + "/answers");

 }

});

In some cases, may be due to difference in mongodb version, below works:

Forum.findOneAndUpdate({_id: req.params.id}, {

  $pull: {"answers" : {"_id": req.body.answersId} }

});

answered Nov 26 '18 at 7:34

Ankit Agarwal

24.4k52245

if i use this '$pull: {"answers" : {"_id": req.body.answersId} }' delete function not working

– indu ECE
Nov 26 '18 at 7:58

@indu ECE - any errors you are getting?

– Rahul Raval
Nov 26 '18 at 8:19

That should have worked @induECE

– Ankit Agarwal
Nov 26 '18 at 8:19

1

@induECE it might be the case that there are no records with ` _id: req.params.id ` or even "_id": req.body.answersId

– Ankit Agarwal
Nov 26 '18 at 9:07

1

sry, i got it. thank u so much

– indu ECE
Nov 26 '18 at 9:08

|
show 8 more comments

Your Answer

StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});

}
});

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53476285%2fnode-js-how-to-delete-particular-id-data-from-array%23new-answer', 'question_page');
}
);

Post as a guest

Name

Required, but never shown

1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

You need to use answers._id directly when you are using $pull for the given data structure you have:

Forum.findOneAndUpdate({_id: req.params.id}, {

  $pull: {"answers._id": req.body.answersId}

 },{ safe: true, multi: true },

 function(err,result) {

  if (err) {

      console.log(err);

      res.json({msg:"somethong went wrong"})

  }

  else {

     res.json({msg:"success"});

    // res.redirect("/qus/" + foundAnimal._id + "/answers");

 }

});

In some cases, may be due to difference in mongodb version, below works:

Forum.findOneAndUpdate({_id: req.params.id}, {

  $pull: {"answers" : {"_id": req.body.answersId} }

});

answered Nov 26 '18 at 7:34

Ankit Agarwal

24.4k52245

if i use this '$pull: {"answers" : {"_id": req.body.answersId} }' delete function not working

– indu ECE
Nov 26 '18 at 7:58

@indu ECE - any errors you are getting?

– Rahul Raval
Nov 26 '18 at 8:19

That should have worked @induECE

– Ankit Agarwal
Nov 26 '18 at 8:19

1

@induECE it might be the case that there are no records with ` _id: req.params.id ` or even "_id": req.body.answersId

– Ankit Agarwal
Nov 26 '18 at 9:07

1

sry, i got it. thank u so much

– indu ECE
Nov 26 '18 at 9:08

|
show 8 more comments

You need to use answers._id directly when you are using $pull for the given data structure you have:

Forum.findOneAndUpdate({_id: req.params.id}, {

  $pull: {"answers._id": req.body.answersId}

 },{ safe: true, multi: true },

 function(err,result) {

  if (err) {

      console.log(err);

      res.json({msg:"somethong went wrong"})

  }

  else {

     res.json({msg:"success"});

    // res.redirect("/qus/" + foundAnimal._id + "/answers");

 }

});

In some cases, may be due to difference in mongodb version, below works:

Forum.findOneAndUpdate({_id: req.params.id}, {

  $pull: {"answers" : {"_id": req.body.answersId} }

});

answered Nov 26 '18 at 7:34

Ankit Agarwal

24.4k52245

if i use this '$pull: {"answers" : {"_id": req.body.answersId} }' delete function not working

– indu ECE
Nov 26 '18 at 7:58

@indu ECE - any errors you are getting?

– Rahul Raval
Nov 26 '18 at 8:19

That should have worked @induECE

– Ankit Agarwal
Nov 26 '18 at 8:19

1

@induECE it might be the case that there are no records with ` _id: req.params.id ` or even "_id": req.body.answersId

– Ankit Agarwal
Nov 26 '18 at 9:07

1

sry, i got it. thank u so much

– indu ECE
Nov 26 '18 at 9:08

|
show 8 more comments

You need to use answers._id directly when you are using $pull for the given data structure you have:

Forum.findOneAndUpdate({_id: req.params.id}, {

  $pull: {"answers._id": req.body.answersId}

 },{ safe: true, multi: true },

 function(err,result) {

  if (err) {

      console.log(err);

      res.json({msg:"somethong went wrong"})

  }

  else {

     res.json({msg:"success"});

    // res.redirect("/qus/" + foundAnimal._id + "/answers");

 }

});

In some cases, may be due to difference in mongodb version, below works:

Forum.findOneAndUpdate({_id: req.params.id}, {

  $pull: {"answers" : {"_id": req.body.answersId} }

});

answered Nov 26 '18 at 7:34

Ankit Agarwal

24.4k52245

You need to use answers._id directly when you are using $pull for the given data structure you have:

Forum.findOneAndUpdate({_id: req.params.id}, {

  $pull: {"answers._id": req.body.answersId}

 },{ safe: true, multi: true },

 function(err,result) {

  if (err) {

      console.log(err);

      res.json({msg:"somethong went wrong"})

  }

  else {

     res.json({msg:"success"});

    // res.redirect("/qus/" + foundAnimal._id + "/answers");

 }

});

In some cases, may be due to difference in mongodb version, below works:

Forum.findOneAndUpdate({_id: req.params.id}, {

  $pull: {"answers" : {"_id": req.body.answersId} }

});

Forum.findOneAndUpdate({_id: req.params.id}, {

  $pull: {"answers._id": req.body.answersId}

 },{ safe: true, multi: true },

 function(err,result) {

  if (err) {

      console.log(err);

      res.json({msg:"somethong went wrong"})

  }

  else {

     res.json({msg:"success"});

    // res.redirect("/qus/" + foundAnimal._id + "/answers");

 }

});

Forum.findOneAndUpdate({_id: req.params.id}, {

  $pull: {"answers._id": req.body.answersId}

 },{ safe: true, multi: true },

 function(err,result) {

  if (err) {

      console.log(err);

      res.json({msg:"somethong went wrong"})

  }

  else {

     res.json({msg:"success"});

    // res.redirect("/qus/" + foundAnimal._id + "/answers");

 }

});

answered Nov 26 '18 at 7:34

Ankit Agarwal

24.4k52245

answered Nov 26 '18 at 7:34

Ankit Agarwal

24.4k52245

answered Nov 26 '18 at 7:34

Ankit Agarwal

24.4k52245

answered Nov 26 '18 at 7:34

Ankit Agarwal

24.4k52245

if i use this '$pull: {"answers" : {"_id": req.body.answersId} }' delete function not working

– indu ECE
Nov 26 '18 at 7:58

@indu ECE - any errors you are getting?

– Rahul Raval
Nov 26 '18 at 8:19

That should have worked @induECE

– Ankit Agarwal
Nov 26 '18 at 8:19

1

@induECE it might be the case that there are no records with ` _id: req.params.id ` or even "_id": req.body.answersId

– Ankit Agarwal
Nov 26 '18 at 9:07

1

sry, i got it. thank u so much

– indu ECE
Nov 26 '18 at 9:08

|
show 8 more comments

if i use this '$pull: {"answers" : {"_id": req.body.answersId} }' delete function not working

– indu ECE
Nov 26 '18 at 7:58

@indu ECE - any errors you are getting?

– Rahul Raval
Nov 26 '18 at 8:19

That should have worked @induECE

– Ankit Agarwal
Nov 26 '18 at 8:19

1

@induECE it might be the case that there are no records with ` _id: req.params.id ` or even "_id": req.body.answersId

– Ankit Agarwal
Nov 26 '18 at 9:07

1

sry, i got it. thank u so much

– indu ECE
Nov 26 '18 at 9:08

if i use this '$pull: {"answers" : {"_id": req.body.answersId} }' delete function not working

– indu ECE
Nov 26 '18 at 7:58

@indu ECE - any errors you are getting?

– Rahul Raval
Nov 26 '18 at 8:19

That should have worked @induECE

– Ankit Agarwal
Nov 26 '18 at 8:19

@induECE it might be the case that there are no records with ` _id: req.params.id ` or even "_id": req.body.answersId

– Ankit Agarwal
Nov 26 '18 at 9:07

sry, i got it. thank u so much

– indu ECE
Nov 26 '18 at 9:08

|
show 8 more comments

draft saved

draft discarded

Thanks for contributing an answer to Stack Overflow!

Please be sure to answer the question. Provide details and share your research!

But avoid …

Asking for help, clarification, or responding to other answers.

Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Name

Required, but never shown

Name

Required, but never shown

This page is only for reference, If you need detailed information, please check here

搜尋此網誌

Ytukyg