AngularJS - Value attribute on an input text box is ignored when there is a ng-model used

Question

Using AngularJS if I set a simple input text box value to something like  bob  below   The value does not display if the ng-model attribute is added        lt input type  text             id  rootFolder             ng-model  rootFolders             disabled  disabled             value  Bob             size  40   gt    Anyone know of a simple work around to default this input to something and keep the ng-model  I tried to use a ng-bind with the default value but that seems not to work either

User · Answer

I had similar issue  I was not able to use value  something  to display and edit  I had to use the below command inside my  lt input gt along withe ng model being declared     ngModel   userDataToPass pinCode   Where I have the list of data in the object userDataToPass and the item that I need to display and edit is pinCode   For the same   I referred to this YouTube video

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The Angular way  The correct Angular way to do this is to write a single page app  AJAX in the form template  then populate it dynamically from the model  The model is not populated from the form by default because the model is the single source of truth  Instead Angular will go the other way and try to populate the form from the model   If however  you don t have time to start over from scratch  If you have an app written  this might involve some fairly hefty architectural changes  If you re trying to use Angular to enhance an existing form  rather than constructing an entire single page app from scratch  you can pull the value from the form and store it in the scope at link time using a directive  Angular will then bind the value in the scope back to the form and keep it in sync   Using a directive  You can use a relatively simple directive to pull the value from the form and load it in to the current scope  Here I ve defined an initFromForm directive   var myApp   angular module  myApp     initFromForm      angular module  initFromForm          directive  initFromForm   function   parse        return         link  function  scope  element  attrs            var attr   attrs initFromForm    attrs ngModel    element attrs  name            val   attrs value          if  attrs type      number    val   parseInt val            parse attr  assign scope  val                          You can see I ve defined a couple of fallbacks to get a model name  You can use this directive in conjunction with the ngModel directive  or bind to something other than  scope if you prefer   Use it like this    lt input name  test  ng-model  toaster test  value  hello  init-from-form   gt    toaster test     Note this will also work with textareas  and select dropdowns    lt textarea name  test  ng-model  toaster test  init-from-form gt hello lt  textarea gt    toaster test

User · Answer

Hi you can try below methods with initialize of model   Here you can initialize ng-model of textbox two way  - With use of ng-init  - With use of  scope in js   lt  doctype html gt    lt html  gt    lt head gt           lt title gt Angular js initalize with ng-init and scope lt  title gt           lt script type  text javascript  src  https   ajax googleapis com ajax libs angularjs 1 5 8 angular min js  gt  lt  script gt   lt  head gt   lt body ng-app  app   gt       lt h3 gt Initialize value with ng-init lt  h3 gt       lt  -- Initlialize model values with ng-init -- gt       lt div ng-init  user  fullname  Bhaskar Bhatt  email  bhatt bhaskar88 gmail com  address  Ahmedabad     gt          Name    lt input type  text  ng-model  user fullname    gt  lt br  gt          Email    lt input type  text  ng-model  user email    gt  lt br  gt          Address  lt input type  text  ng-model  user address    gt  lt br  gt        lt  div gt         lt  -- initialize with js controller scope -- gt       lt h3 gt Initialize with js controller lt  h3 gt        lt div  ng-controller  alpha  gt          Age  lt input type  text  name  age  ng-model  user age    gt  lt br  gt          Experience    lt input type  text  name  experience  ng-model  user exp    gt  lt br  gt          Skills    lt input type  text  name  skills  ng-model  user skills    gt  lt br  gt       lt  div gt      lt  body gt    lt script type  text javascript  gt          angular module  app               controller  alpha  function  scope                scope user                  scope user age 27               scope user exp  4  years                scope user skills  Php javascript Jquery Ajax Mysql                      lt  script gt    lt  html gt

User · Answer

This is a slight modification to the earlier answers     There is no need for  parse  angular directive  input    function         use strict      var directiveDefinitionObject         restrict   E       require    ngModel       link  function postLink scope  iElement  iAttrs  ngModelController          if  iAttrs value  amp  amp  ngModelController            ngModelController  setViewValue iAttrs value                         return directiveDefinitionObject

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Overriding the input directive does seem to do the job  I made some minor alterations to Dan Hunsaker s code    Added a check for ngModel before trying to use  parse   assign   on fields without a ngModel attributes  Corrected the assign   function param order    app directive  input   function   parse      return       restrict   E       require    ngModel       link  function  scope  element  attrs          if  attrs ngModel  amp  amp  attrs value             parse attrs ngModel  assign scope  attrs value

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The issue is that you have to set the ng-model to the parent element to where you want to set the ng-value value   As mentioned by Angular      It is mainly used on input radio  and option elements  so that when the element is selected  the ngModel of that element  or its select parent element  is set to the bound value    Eg This is an executed code     lt div class  col-xs-12 select-checkbox   gt   lt label style  width  18em   ng-model  vm settingsObj MarketPeers  gt     lt input name  radioClick  type  radio   ng-click  vm setPeerGrp  market               ng-value  vm settingsObj MarketPeers            style  position absolute margin-left  9px   gt     lt div style  margin-left  35px color   717171e8 border-bottom  0 5px solid  e2e2e2 padding-bottom  2    gt Hello World lt  div gt   lt  label gt   lt  div gt    Note  In this above case I alreday had the JSON response to the ng-model and the value  I am just adding another property to the JS object as  MarketPeers   So the model and value may depend according to the need  but I think this process will help  to have both ng-model and value but not having them on the same element

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Update  My original answer involved having the controller contain DOM-aware code  which breaks Angular conventions in favor of HTML    dmackerman mentioned directives in a comment on my answer  and I completely missed that until just now   With that input  here s the right way to do this without breaking Angular or HTML conventions     There s also a way to get both - grab the value of the element and use that to update the model in a directive    lt div ng-controller  Main  gt       lt input type  text  id  rootFolder  ng-model  rootFolders  disabled  disabled  value  Bob  size  40    gt   lt  div gt    and then   app directive  input      parse   function   parse        return           restrict   E           require    ngModel           link  function  scope  element  attrs                if attrs value                     parse attrs ngModel  assign scope  attrs value                                         You can of course modify the above directive to do more with the value attribute before setting the model to its value  including using  parse attrs value  scope  to treat the value attribute as an Angular expression  though I d probably use a different  custom  attribute for that  personally  so the standard HTML attributes are consistently treated as constants    Also  there is a similar question over at Making data templated in available to ng-model which may also be of interest

User · Answer

That s desired behavior  you should define the model in the controller  not in the view    lt div ng-controller  Main  gt     lt input type  text  ng-model  rootFolders  gt   lt  div gt    function Main  scope       scope rootFolders    bob

User · Answer

Vojta described the  Angular way   but if you really need to make this work   urbanek recently posted a workaround using ng-init    lt input type  text  ng-model  rootFolders  ng-init  rootFolders  Bob   value  Bob  gt    https   groups google com d msg angular Hn3eztNHFXw wk3HyOl9fhcJ

User · Answer

If you use AngularJs ngModel directive  remember that the value of value attribute does not bind on ngModel field You have to init it by yourself and the best way to do it is   lt input type  text         id  rootFolder         ng-init  rootFolders    Bob          ng-model  rootFolders         disabled  disabled         value  Bob         size  40   gt

[javascript] AngularJS - Value attribute on an input text box is ignored when there is a ng-model used?

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