Develop Reference

Angular 2 upload Image button is refreshing page

I have a html form with two buttons on it:-
[1] One button is used to upload an image file (.jpg)
[2] and the second one is to submit the form.
The problem is that the upload image button seems to be refreshing the page after the method for uploading the image has completed. Below is my html:-
<div class="m-b-18px">
<div class="col-m-12">
<a (click)="readRecipes()" class="btn btn-primary pull-right">
<span class="glyphicon glyphicon-plus"></span>Read Recipes
</a>
</div>
</div>
<div class="row">
<div class="col-md-12">
<form [formGroup]="create_recipe_form" (ngSubmit)="createRecipe()">
<table class="table table-hover table-responsive table-bordered">
<tr>
<td>
Name
</td>
<td>
<input name="name" formControlName="name" type="text" class="form-control" required />
<div *ngIf="create_recipe_form.get('name').touched && create_recipe_form.get('name').hasError('required')"
class="alert alert-danger">Name is required
</div>
</td>
</tr>
<tr>
<td>
Description
</td>
<td>
<textarea name="description" formControlName="description" class="form-control" required>
</textarea>
<div *ngIf="create_recipe_form.get('description').touched && create_recipe_form.get('description').hasError('required')"
class="alert alert-danger">
Description is required
</div>
</td>
</tr>
<tr>
<td>
Image
</td>
<td>
<input name="selectFile" id="selectFile" type="file" class="form-control btn btn-success" />
<button type="button" class="btn btn-primary" (click)="uploadImage($event)" value="Upload Image">Upload Image</button>
<input type='hidden' id='image_id' name='img_id' value="6" formControlName="image_id" />
</td>
</tr>
<tr>
<td></td>
<td>
<button class="btn btn-primary" type="submit" [disabled]="!create_recipe_form.valid">
<span class="glyphicon glyphicon-plus"></span> Create
</button>
</td>
</tr>
</table>
</form>
</div>
</div>
My code for the uploadImage method is below:-
uploadImage(e) {
let files = this.elem.nativeElement.querySelector('#selectFile').files;
let formData = new FormData();
let file = files[0];
formData.append('selectFile', file, file.name);
this._imageService.uploadImage(formData)
.subscribe(
image => {
console.log(image);
this.addImageIdToHtml(image)
e.preventDefault();
e.stopPropagation();
},
error => console.log(error)
);
}
As soon as the above method has finished running the page appears to refreshing causing my app to go back to the land page. This is not the behaviour I want. What I actually want is the form page to be retained until the Submit form button is pressed. Can anyone help me please?

Use div tags instead of form tag.
Change the button type as button.
<button type="button">Upload Image</button>
Modify the code as follows.
<div class="m-b-18px">
<div class="col-m-12">
<a (click)="readRecipes()" class="btn btn-primary pull-right">
<span class="glyphicon glyphicon-plus"></span>Read Recipes
</a>
</div>
</div>
<div class="row">
<div class="col-md-12">
<div [formGroup]="create_recipe_form" (ngSubmit)="createRecipe()">
<table class="table table-hover table-responsive table-bordered">
<tr>
<td>
Name
</td>
<td>
<input name="name" formControlName="name" type="text" class="form-control" required />
<div *ngIf="create_recipe_form.get('name').touched && create_recipe_form.get('name').hasError('required')"
class="alert alert-danger">Name is required
</div>
</td>
</tr>
<tr>
<td>
Description
</td>
<td>
<textarea name="description" formControlName="description" class="form-control" required>
</textarea>
<div *ngIf="create_recipe_form.get('description').touched && create_recipe_form.get('description').hasError('required')"
class="alert alert-danger">
Description is required
</div>
</td>
</tr>
<tr>
<td>
Image
</td>
<td>
<input name="selectFile" id="selectFile" type="file" class="form-control btn btn-success" />
<button type="button" class="btn btn-primary" (click)="uploadImage($event)" value="Upload Image">Upload Image</button>
<input type='hidden' id='image_id' name='img_id' value="6" formControlName="image_id" />
</td>
</tr>
<tr>
<td></td>
<td>
<button class="btn btn-primary" type="button" [disabled]="!create_recipe_form.valid">
<span class="glyphicon glyphicon-plus"></span> Create
</button>
</td>
</tr>
</table>
</div>
</div>
</div>

You should not upload files on Angular folders like (Assets) , cuz it will recompile every time new file added to Angular environment and that will cause you the page refreshment you didn't want.

If you are using button tag inside the form tag, add type="button" inside the button tag.
<button type="button"></button>
This will work perfectly

Find Value of textarea from closest row of table

I have a button Update in One td I want to fetch value of both textarea of td from same tr.
There are lots of tr so I have to use closest() method to find element. I have tried to find element but it's not working.
HTML :-
<tr>
<td>
<div class="agenda-date">
<div class="dayofmonth color_font_date">2017-05-31</div>
<div class="dayofweek">
Wednesday
</div>
</div>
</td>
<td>
<div class="row margin_two_planner">
<button type="button" class="btn btn-sm btn-primary">AM </button>
<a data-toggle="modal" href="#add_apt_status" class=""><input type="number" value="3" name="" class="number_planner"></a>
<label class="control-label"> 6 </label>
</div>
<div class="row margin_two_planner">
<button type="button" class="btn btn-sm btn-primary">PM </button>
<a data-toggle="modal" href="#add_apt_status" class=""><input type="number" value="4" name="" class="number_planner"></a>
<label class="control-label"> 2 </label>
</div>
</td>
<td style="width: 20%;">
<textarea id="" class="form-control initial_cap appointment_note" required="required" rows="3" name="appointment_note" cols="50" aria-required="true" disabled=""> APT -1 </textarea>
</td>
<td style="width: 20%;">
<textarea id="" class="form-control initial_cap holiday_note" required="required" rows="3" name="holiday_note" cols="50" aria-required="true" disabled=""> Holiday - 1 </textarea>
</td>
<td>
<div class="text-right">
<button type="button" id="" class="btn btn-primary appointment_edit_button">Edit </button>
<button type="button" id="" onclick="planner_note_edit(1)" class="btn btn-md btn-primary appointment_update_button" style="display:none"> Update </button>
<button type="button" id="" class="btn btn-md btn-cancel appointment_cancel_button" style="display:none">Cancel </button>
</div>
</td>
</tr>
Jquery :-
function planner_note_edit(planner_note_id)
{
appointment_note = $(this).closest('td').find(".holiday_note").val();
alert(appointment_note);
}
But I'm not able to fetch value of textarea from closest td.

You should get the textarea from current row.
So, please use .closest('tr')
appointment_note = $(this).closest('tr').find(".holiday_note").val();
Also, you have to pass the clicked button object. this in your function is a reference to the window object.
function planner_note_edit(planner_note_id,event)
{
appointment_note = $(event.target).closest('td').find(".holiday_note").val();
alert(appointment_note);
}
HTML
<button type="button" id="" onclick="planner_note_edit(1,event)" class="btn btn-md btn-primary appointment_update_button" style="display:none"> Update </button>

How do you get the value of a dropdown list and make it an Input variable in Laravel?

The website that I'm making, using Laravel and Bootstrap, has a search bar along with a dropdown list, that will narrow the search down to a specific category. Here's the following code for the search bar:
<div class="container">
<form id="search_form" method="get" action="{{ route('search') }}">
<div class="row">
<div class="col-xs-8 col-xs-offset-2">
<div class="input-group">
<div class="input-group-btn search-panel">
<button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
<span name="category" id="search_concept">Title</span> <span class="caret"></span>
</button>
<ul class="dropdown-menu" role="menu">
<li>Title</li>
<li>Author</li>
<li>School</li>
<li>Course Code</li>
</ul>
</div>
<!--<input type="hidden" name="_token" value="{{ Session::token() }}">-->
<input class="form-control" name="term" placeholder="Search Here" autocomplete="off" autofocus="autofocus" type="text" id="filter">
<span id="search_submit" type="submit" class="btn input-group-addon glyphicon glyphicon-search" style="width:1%;"></span>
</div>
</div>
</div>
</form>
</div>
When I type "hello world" into the search bar and submit the form, I get redirected to this URL: http://localhost:8000/search?term=hello+world
I want to also pick up the selected value of the dropdown list, so when I select 'title' as my category in the dropdown list and submit the form, I would get redirected to:
http://localhost:8000/search?category=title&term=hello+world
How do I approach this?

You can modify it like this and use jQuery/js
<div class="container">
<form id="search_form" method="get" action="{{ route('search') }}">
<div class="row">
<div class="col-xs-8 col-xs-offset-2">
<div class="input-group">
<div class="input-group-btn search-panel">
<button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
<span name="category" id="search_concept">Title</span> <span class="caret"></span>
</button>
<ul class="dropdown-menu" role="menu">
<li><a data-category="title" class="search_category" href="#title">Title</a></li>
<li><a data-category="author" class="search_category" href="#author">Author</a></li>
<li><a data-category="school" class="search_category" href="#school">School</a></li>
<li><a data-category="course_code" class="search_category" href="#course_code">Course Code</a></li>
</ul>
</div>
<!--<input type="hidden" name="_token" value="{{ Session::token() }}">-->
<input type="hidden" name="category" id="category"/>
<input class="form-control" name="term" placeholder="Search Here" autocomplete="off" autofocus="autofocus" type="text" id="filter">
<span id="search_submit" type="submit" class="btn input-group-addon glyphicon glyphicon-search" style="width:1%;"></span>
</div>
</div>
</div>
</form>
</div>
jQuery:
$(".search_category").click(function(e){
$("#category").val($(this).attr("data-category"));
});

Why is my value getting appended to the hidden field instead of overwritten?

I have a simple filesector i have made (with links as the file names). When i click a filename the following javascript is run:
<script>
$(function () {
$(".fileSelect").click(function () {
var name = $(this).text(); //gets the name of the clicked file
var id = $(this).attr("id");// gets the id of the clicked file
$("#filehiddenid").val(id); // sets the file id, but wrongly appends
$("#fileDisplayText").val(name); //sets the display name
$("#mySelectFile").modal("hide"); //hides the modal file dialog
});
})
</script>
The value being set in the hidden field is the internal id of my file (database id), and the filename is for display.
My problem is that when i repeatedly select a new file, post the form and then selct and post then form etc. etc. Then the value from the file select is appended to the forms collection, so that when i post the form i get something like: 176, 178, 179,
as the values, instead of just 176 which is the latest value I have selected.
*edit: markup added *
This is the markup, please ignore the Razor variables, i named the id's of the input fields to match the javascript, in my code they are generated server side:
<div class="templateSetting">
<div>
<span>
<strong>
#setting.SettingData.Name
</strong>
</span> <br />
<span>#setting.SettingData.Description</span>
<input type="hidden" id="filehiddenid" name="setting_#setting.SettingData.Alias" value="#setting.Value" />
</div>
<div>
<div style="float: left; width: 40%;">
<input type="text" style="width:545px;" id="fileDisplayText" name="meta_setting_#setting.SettingData.Alias" value="#fileName" class="form-control" /></div>
<div style="width: 60%;">
Select File
</div>
<div class="templatealias">#setting.SettingData.Alias</div>
<div style="clear:both;"></div>
</div>
</div>
edit: This the entire markup, rendered:
<form action="/InteractiveApplications/EditApplication/23" id="editform" method="post" name="editform">
<section id="container">
<div id="wrapping" class="clearfix" style="padding-left:10px;width:100%;">
<div id="WorkContent">
<div class="validation-summary-valid" data-valmsg-summary="true">
<ul>
<li style="display:none"></li>
</ul>
</div>
<input data-val="true" data-val-number="The field CurrentFolderId must be a number." data-val-required="Feltet CurrentFolderId skal udfyldes." id="CurrentFolderId" name="CurrentFolderId" type="hidden" value="0">
<input data-val="true" data-val-number="The field ApplicationId must be a number." data-val-required="Feltet ApplicationId skal udfyldes." id="ApplicationId" name="ApplicationId" type="hidden" value="23">
<table style="width: 50%;padding-left: 20px;" class="tablelist">
<tbody>
<tr>
<td valign="top">
<table width="100%">
<tbody>
<tr>
<td style="width:120px;vertical-align:top;">
<label for="Name">Name</label>:
</td>
<td>
<input class="form-control" id="Name" name="Name" type="text" value="Afstemning">
</td>
</tr>
<tr>
<td style="width:120px;vertical-align:top;">
<label for="Description">Description</label>:
</td>
<td>
<textarea class="form-control" cols="20" id="Description" name="Description" rows="2">This is a poll to take when entering the library</textarea>
</td>
</tr>
<tr>
<td style="width:120px;vertical-align:top;">
<label for="Templates">Template</label>:
</td>
<td>
Simple Poll Template
</td>
</tr>
<tr>
<td style="width:120px;vertical-align:top;">
<label for="ApplicationData">Path</label>:
</td>
<td>
<input class="form-control" id="ApplicationData" name="ApplicationData" type="text" value="http://10.0.0.44:81/">
</td>
</tr>
<tr>
<td style="width:120px;vertical-align:top;">
<label for="BlockHostExit">Block host exit</label>:
</td>
<td>
<input checked="checked" data-val="true" data-val-required="Feltet Block host exit skal udfyldes." id="BlockHostExit" name="BlockHostExit" type="checkbox" value="true"><input name="BlockHostExit" type="hidden" value="false">
</td>
</tr>
</tbody>
</table>
</td>
<td valign="top" style="padding-left: 20px">
<img src="/InteractiveImages/689a492e-7e01-49cc-b0b3-57e23b621706.jpg" width="100%" style="text-align: center;max-width: 200px;"><br>
<input id="ImagePath" name="ImagePath" type="hidden" value="/InteractiveImages/689a492e-7e01-49cc-b0b3-57e23b621706.jpg"> <a style="color: gray" href="/InteractiveApplications/ChangePicture/23">
Change Picture
</a>
</td>
</tr>
</tbody>
</table>
</div>
</div>
</section>
<div class="titleBar" style="padding-left:-10px;height:30px;border-bottom:1px solid #307AAB">
<h2> Application configuration</h2>
</div>
<div style="padding: 10px">
<div>
<div id="templateSettings" class="templateSettings">
<div class="templateSetting">
<div class="templateSettingLeading">
<strong>
Submit Text
</strong><br>
This is the text for the submit button
</div>
<div class="templateSettingInput">
<div style="width:50%;float:left;"> <input type="text" name="setting_submittext" value="qwer" class="form-control"></div>
<div class="templatealias">submittext</div>
<div style="clear:both;"></div>
</div>
</div>
</div>
<div id="templateSettings" class="templateSettings">
<div class="templateSetting">
<div class="templateSettingLeading">
<strong>
Multiple choice
</strong><br>
This determines if the poll has multiple right answers
</div>
<div class="templateSettingInput">
<input type="hidden" id="setting_ismultiplechoice" name="setting_ismultiplechoice" value="off">
<input id="ismultiplechoice" type="checkbox" name="setting_ismultiplechoice">
<div class="templatealias">
ismultiplechoice
</div>
</div>
</div>
<script>
$(document).ready(function () {
$("#checkbox_ismultiplechoice").click(function () {
var settingId = "#setting_ismultiplechoice";
var currentVal = $(settingId).val();
if (currentVal == "off") {
$(settingId).val("on");
}
else {
$(settingId).val("off");
}
});
});
</script>
</div>
<div id="templateSettings" class="templateSettings">
<script type="text/javascript">
var answerCounter = 1;
var trueFalseCounter = 0;
$(document).ready(function () {
$("#addbutton").click(function () {
answerCounter += 1;
trueFalseCounter += 1;
$("#questioninput_question").append("<div id='answer_" + answerCounter + "'>Answer: <input type='text' name='setting_question:" + answerCounter + "' value='' class='form-control' /><input type='checkbox' name='answer_setting_question:" + answerCounter + "' />This is the correct answer <input type='button' value='Delete' class='deleteButton btn btn-warning btn-xs' id='deletebutton_" + answerCounter + "'/></div>");
});
$(".templateSettingInput").on("click", ".deleteButton", function () {
if(confirm("Are you sure you want to delete this answer?"))
{
$(this).parent().remove();
}
});
});
</script>
<div class="templateSetting">
<div class="templateSettingLeading">
<strong> Question</strong>
This is the question and the answers for the poll
</div>
<div class="templatealias">
question
</div>
<div class="templateSettingInput" id="questioninput_question" style="width:50%;">
<textarea cols="40" rows="4" name="setting_question" class="form-control">werwe</textarea>
<input style="vertical-align: top" type="button" id="addbutton" value="Add answer" class="addbutton btn btn-info btn-xs navbar-btn"><br>
<div id="answer_1">
Answer:
<input type="text" name="setting_question:1" value="wer" class="form-control">
<!--<input type='checkbox' name='answer_setting_question:1' />This
is the correct answer-->
<input type="button" value="Delete" id="deletebutton_1" class="deleteButton btn btn-warning btn-xs">
</div>
</div>
</div>
</div>
<div id="templateSettings" class="templateSettings">
<div class="templateSetting">
<div class="templateSettingLeading">
<strong>
Show Answer to user
</strong><br>
determines if the user should see answers
</div>
<div class="templateSettingInput">
<input type="hidden" id="setting_showanswer" name="setting_showanswer" value="off">
<input id="showanswer" checked="'checked'" type="checkbox" name="setting_showanswer">
<div class="templatealias">
showanswer
</div>
</div>
</div>
<script>
$(document).ready(function () {
$("#checkbox_showanswer").click(function () {
var settingId = "#setting_showanswer";
var currentVal = $(settingId).val();
if (currentVal == "off") {
$(settingId).val("on");
}
else {
$(settingId).val("off");
}
});
});
</script>
</div>
<div id="templateSettings" class="templateSettings">
<div class="templateSetting">
<div>
<span>
<strong>
Background
</strong>
</span> <br>
<span>Please select a background image</span>
<input type="hidden" id="id_background" name="setting_background" value="172,201,173,175,172,178,178,,">
</div>
<div>
<div style="float: left; width: 40%;"><input type="text" style="width:545px;" id="text_background" name="meta_setting_background" value="611a756c4c3d338fc4ffcebf8b1979d6.png" class="form-control"></div>
<div style="width: 60%;">
Select File
</div>
<div class="templatealias">background</div>
<div style="clear:both;"></div>
</div>
</div>
<!-- Modal -->
<div class="modal fade" id="mySelectFile" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">×</span><span class="sr-only">Close</span></button>
<h4 class="modal-title" id="myModalLabel">Select file</h4>
</div>
<div class="modal-body">
<div class="foldertree">
<ul>
<li id="0" class="folder">
All
<ul>
<li id="173" class="file">iStock_000032787140Large.jpg</li>
<li id="174" class="file">52_fordele.jpg</li>
<li id="175" class="file">11376047043_a06bed34bd_o.jpg</li>
<li id="177" class="file">DigitalSignage.png</li>
<li id="178" class="file">mediawall_search_br.jpg</li>
</ul>
</li>
<ul>
<li id="59" class="folder">
Test interactive folder
<ul>
<li id="172" class="file">611a756c4c3d338fc4ffcebf8b1979d6.png</li>
</ul>
</li>
</ul>
</ul>
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
</div>
</div>
<div class="templateSettingInput">
<input type="text" name="setting_background" value="172,201,173,175,172,178,178,," class="form-control">
<div class="templatealias">background sdhsdsd</div>
</div>
</div>
<script>
$(function () {
$(".fileSelect").click(function () {
var name = $(this).text();
var id = $(this).attr("id");
var elementId = 'id_background';
var elementText = 'text_background';
$("#" + elementId).val(id);
$("#" + elementText).val(name);
$("#mySelectFile").modal("hide");
});
})
</script>
</div>
</div>
</div>
</div>
</form>

Make sure there aren't other hidden inputs on the page with the same id and view the html in your browser and verify that the value on the element is correct before jquery modifies it.
The jquery id selector (http://api.jquery.com/id-selector/) will only select the first element in the DOM that has that id.
If there are multiple hidden input elements with the same name on the form, they will all get posted to the server.

Jquery - Selecting the correct class from a list

I have the following HTML:
<tr id="item-1">
<td class="shopping-cart-quantity">
<div class="product-quantity">
<input id="product-quantity" data-area="item-1" data-product="1" type="text" value="3">
</div>
</td>
</tr>
<tr id="item-2">
<td class="shopping-cart-quantity">
<div class="product-quantity">
<input id="product-quantity" data-area="item-2" data-product="2" type="text" value="3">
</div>
</td>
</tr>
<tr id="item-3">
<td class="shopping-cart-quantity">
<div class="product-quantity">
<input id="product-quantity" data-area="item-3" data-product="3" type="text" value="3">
</div>
</td>
</tr>
The input field uses Twitter Bootstrap Spin and the input id="product-quantity" renders as follows:
<div class="input-group bootstrap-touchspin input-group-sm">
<span class="input-group-btn">
<button class="btn quantity-down bootstrap-touchspin-down" type="button">
<i class="fa fa-angle-down"></i>
</button>
</span>
<span class="input-group-addon bootstrap-touchspin-prefix"></span>
<input id="product-quantity" data-area="item-3" data-product="3" type="text" value="3" readonly="" class="form-control input-sm">
<span class="input-group-addon bootstrap-touchspin-postfix"></span>
<span class="input-group-btn">
<button class="btn quantity-up bootstrap-touchspin-up" type="button">
<i class="fa fa-angle-up"></i>
</button>
</span>
</div>
My goal is to grab the data-area value so that I can apply the correct quantities to the correct product however no matter what I do, it always returns the first item in the table.
Here is my JQuery:
$('.product-quantity').on('click','.input-group',function(){
alert($('.input-group').find('#product-quantity').data("area"));
});

Inside a click handler this is the actual element clicked:
$('.product-quantity').on('click','.input-group',function(){
alert($(this).find('#product-quantity').data("area"));
});
but the actual problem is having duplicate IDs. That is invalid HTML and jQuery can only see the first.
Replace id="product-quantity" with a class and use .product-quantity