javascript - How to get AngularJS to update the DOM on ng-repeat array splice? $scope.$apply() returns an error -

-

solved - have plunkr demonstrates issues facing. simple image uploader uses filereader display image (thanks angular-file-uploads). have placed in dynamic form can added , removed.

issues:

  1. in plunkr, dataurl not displayed until after add image clicked. may plunkr issue since image displayed nicely in site. --solved

  2. if upload image onto first form, click add image, , click first tab, delete first tab, data deleted in $scope.images dom not updated. adding $scope.$apply() results in digest in progress error.

  3. the old file name displayed in upload input input empty.

my question is: how can dom updated when image removed?

update: issue #1 solved, issues #2 , #3 remain.

update2: i've tried attaching $scope.$apply <input type="file" onchange="..." removing image splice() not fire onchange event.

update3: i've added simple text input ng-model="image.caption" see if the dom update appropiately. does. dom updates if images[0] deleted images[1] has image.

update4: grundy has identified problem: track $index. removing makes work expected. not sure why though.

you problem track by expression in ngrepeat
says in doc ngrepeat

ngrepeat makes corresponding changes dom:

  • when item added, new instance of template added dom.
  • when item removed, template instance removed dom.
  • when items reordered, respective templates reordered in dom.

so, in case when splice first element, index last element change first , angular think need remove last element dom, , not need change first.

also, $index, $last , etc special properties in ngrepeat scope, avalilable , not depend on track by expresion


Comments

Post a Comment

Popular posts from this blog

Java 3D LWJGL collision -

-
i making 3d java game lwjgl library, , wondering how add collision detection, player not go through models. i using obj models. here objloader class, loads models: package renderengine; import java.io.bufferedreader; import java.io.file; import java.io.filenotfoundexception; import java.io.filereader; import java.util.arraylist; import java.util.list; import models.rawmodel; import org.lwjgl.util.vector.vector2f; import org.lwjgl.util.vector.vector3f; public class objloader { public static rawmodel loadobjmodel(string filename, loader loader){ filereader fr = null; try { fr = new filereader(new file("res/"+filename+".obj")); } catch (filenotfoundexception e) { system.err.println("couldn't load file!"); e.printstacktrace(); } bufferedreader reader = new bufferedreader(fr); string line; list<vector3f> vertices = new arraylist<vector3f...
Read more

methods - python can't use function in submodule -

-
my folder structure this: pythonstuff/ program.py modulea/ __init__.py foo.py bar.py here's code bar.py : def hello(): print("hello, world!") here's code program.py : #!/usr/bin/env python3 modulea import bar bar.hello() i run $ python3 program.py somehow error: file "program.py", line 3, in <module> bar.hello() attributeerror: 'module' object has no attribute 'hello' edit: __init__.py file empty. edit2: after trying realized had bar.py in root directory contained hello() method. bar.py in modulea/ directory empty. add it import os __all__ = [] module in os.listdir(os.path.dirname(__file__)): if module != '__init__.py' , module[-3:] == '.py': __all__.append(module[:-3]) the init .py files required make python treat directories containing packages; done prevent directories common name, such string, unintentionally hiding v...
Read more

c# - ErrorThe type or namespace name 'AxWMPLib' could not be found (are you missing a using directive or an assembly reference?) -

-
what possible reference handler axwmplib._wmpocxevents_playstatechangeeventhandler ? when pass event in method, private void axwindowsmediaplayer1_playstatechange(object sender,axwmplib._wmpocxevents_playstatechangeevent e) compiling throws following error: the type or namespace name 'axwmplib' not found (are missing using directive or assembly reference?) if using visual studio make sure have axwmplib listed under references in solution explorer. if have embedded windows media player control in form, should have been added automatically along wmplib . an easy way add these libraries if missing add windows media player control form (an existing 1 do). right-click on toolbox , pick "choose items..." context menu, tick "windows media player" control on "com components" tab , click ok. should have little windows media player icon attached cursor; click on form add it. add axwmplib , wmplib references solution. can delete w...
Read more