Develop Reference

How to dynamically show a button based on conditions where the value being used to determine what button to show isn't known until it's clicked?

If someone has a better title feel free to edit. I inherited a project from a developer who is leaving the company and I'm scratching my head trying to find a solution to a problem the existing code provides.
Code from the view:
<div>
<table class="table">
<tr>
<th class="border-bottom border-top-0">Action</th>
</tr>
#foreach (Step actionItem in Model.Steps)
{
#if (actionItem.HasRun == false)
{
<tr class="border-top-0">
<td>
#if (actionItem.ReturnsInfo == true)
{
<input type="button" value="Run Check" onclick="loadProcessingFeedbackPartial('#actionItem.StepID', '#Model.Client.DatabaseConnectionString' )" />
}
else
{
<input type="submit" value="Run Check" name="btnRunStoredProcedure" asp-action="CallStepStoredProcedure" asp-route-StepID="#actionItem.StepID" asp-route-StepCompleted="#actionItem.HasRun" />
}
</td>
</tr>
break;
}
}
</table>
</div>
Javascript being called from the button click:
<script type="text/javascript">
function loadProcessingFeedbackPartial(x, y) {
var url = '#Url.Action("ViewProcessingFeedBackPartial", "Client")';
var stepId = x;
var databaseConnectionString = y;
$("#processingFeedbackPartialDiv").load(url, { stepId, databaseConnectionString },
function () {
$("#confirmButton").removeAttr("style");
});
}
</script>
Controller action:
public IActionResult ViewProcessingFeedBackPartial(int StepId, string DatabaseConnectionString)
{
FeedbackDetails feedbackDetails = new FeedbackDetails();
feedbackDetails.Data = _clientProcessingService.GetProcessingFeedbackDetails(StepId, DatabaseConnectionString);
return PartialView("_ViewFeedback", feedbackDetails);
}
The button in the view has an Onclick event that goes to the Javascript function, which loads a partial view with the data from the controller calling a service method. Here's where the problem is. If no rows are returned, I want to bypass the partial being drawn entirely.
So I changed the controller action around a bit to include a condition where if the feedbackDetails.Data has 0 rows to just call a different method from the service, process as normal, but return the View instead of a partial.
public IActionResult ViewProcessingFeedBackPartial(int StepId, string DatabaseConnectionString, int ClientId)
{
FeedbackDetails feedbackDetails = new FeedbackDetails();
feedbackDetails.Data = _clientProcessingService.GetProcessingFeedbackDetails(StepId, DatabaseConnectionString);
if(feedbackDetails.Data.Rows.Count == 0)
{
_clientProcessingService.RunProcessStepConfirmation(DatabaseConnectionString, StepId, ClientId, "No information returned, automatically proceeding to next step.");
return RedirectToAction("Processing", new { Id = ClientId });
}
return PartialView("_ViewFeedback", feedbackDetails);
}
This "worked", except since in the view it's being called in a Javascript function that loads a partial regardless, the view is returned inside that partial instead of the view being returned.
But I'm unsure how to fix this because without first clicking the button and attempting to populate that collection with data, I don't know if it's empty (and skip the partial) or it has rows (and draw the partial).
I attempted creating an intermediary controller action that returns a boolean and attempted to use the result of that inside the javascript function to either draw the partial or skip it based on the bool, but I'm not really the greatest at Javascript so I wasn't able to get it to work.
I'm unsure if the way to solve this involves creating logic that displays multiple buttons that route to different controller actions or javascript functions or just handling it all via Javascript somehow.
What would be a good way to go about solving this?

#Mkalafut, your jQuery function is loading the controller result directly into "#processingFeedbackPartialDiv" regardless of the result received. Better to pull this initially into a variable, then add some simple logic to decide what to do next. Potentially the controller can help by returning a null result that is easy to identify.
e.g.
$.get("url", { stepId, databaseConnectionString }, function (data) {
var result = data;
// Some example conditional logic - adjust as required
if (result != null){
$("#processingFeedbackPartialDiv").html(result);
$("#confirmButton").removeAttr("style");
}
});
Remember, jQuery load & get are both just shorthand functions for ajax, so if needs be you can customise the code further to get the flexibility you need.
https://api.jquery.com/jQuery.get/
https://api.jquery.com/load/

Multiple button calling same function with different parameters in angularjs - javascript

I want to call same method in controller on multiple button click with different parameters. If I write different-different javascript code to handle it, works fine. But I want to use the same code for all operation... Here is html code:
Note: "breakfastCalorie" and "lunchCalorie" are available dynamic values.
<div id="breakfast">
<span> Breakfast - {{breakfastCalorie}} </span>
<button id="breakfast_btn" ng-click="suggestMeal(breakfastCalorie)">Breakfast</button>
</div>
<div id="lunch">
<span> Lunch - {{lunchCalorie}} </span>
<button id="lunch_btn" ng-click="suggestMeal(lunchCalorie)">Lunch</button>
</div>
... and so on.
And the following function should be called on each button click (or should I write same javascript again).
Here is javascript line of code:
$scope.suggestMeal = function () {
//I want the calorie value to further send it to do some manipulation
}

You can create enum for type of eat
$scope.EatType = {
breakfast: 1,
lunch: 2
};
Then call with appropriate type:
$scope.suggestMeal = function (eatType, cal) {
}
for calling:
<button id="lunch_btn" ng-click="suggestMeal(EatType.lunch,lunchCalorie)">Lunch</button>

Call A Controller Method in JavaScript to Load View - CodeIgniter

I have a hidden div that holds a register page. On click of a button the showSection() function is called which then slides down the include. Although, I need to pass in some information to that view, and therefore wanted this to be called from my controller.
Heres what I have, I keep getting errors that it does not exist.
controller (called Product_coupon)
public function register($para2=''){
$page_data['test'] = 'tesssssst';
$this->load->view('front/myaccount/product_coupon/register', $page_data);
}
File in which the view is supposed to be called.
<button type="button" class="btn btn-primary btn-md center showSection">Create Coupon</button>
<div id="register" style="display:none;">
</div>
Javascript
$('.showSection').click(function() {
showRegister();
});
function showRegister() {
var alerta2 = $('#register');
alerta2.load('<?php echo base_url();?>/myaccount/product_coupon/register');
$('#register').slideDown(1000);
$('#hideCreate').fadeIn(90);
};

To pass on the content of a view file in codeigniter but not to load as a view, third parameter is needed,
public function register($para2='')
{
$page_data['test'] = 'tesssssst';
$html = $this->load->view('front/myaccount/product_coupon/register', $page_data,true);
return $html;
}
Notice true as a third argument in view function.

Meteor/Iron Router - When/Where to run JS to swap to WYSIWYG

I'm trying to figure out where is the best place to run a jQuery plugin that replaces a textarea (with a reactive value). It needs to be called after the textarea has been assigned the value.
I've tried various places. The most correct place I've tried seems to be in the templates onAfterAction callback, in a Meteor.defer. This works about 95% of the time.
Something like this:
MyController = RouteController.extend({
waitOn: function () {
return Meteor.subscribe('post', this.params._id);
},
onAfterAction: function () {
Meteor.defer(function () {
$('.make-wysiwyg').wysiwyg();
});
}
});
However, occasionally it doesn't. If I start bouncing between posts really quick, occasionally one will apparently run before the textarea has data and fail to display property (it'll be empty, because it needs the value before wysiwyg() is called).
I've eliminated the wysiwyg() function itself as the culprit by replacing that line with:
$('.make-wysiwyg').each(function () {console.log($(this).val())});
And I can clearly see every so often it'll print empty value fields for no apparent reason.
I'm not sure if the template or publish() function could be a culprit, so I'll supply them as well.
Any ideas greatly appreciated.
Template:
<template name="adminPostsEdit">
<h1>Edit Post</h1>
<form id="edit-post" class="{{isNewClass}}" method="post">
<label for="post-title">Title</label>
<input id="post-title" value="{{post.title}}">
<label for="post-slug">Slug</label>
<input id="post-slug" value="{{post.slug}}">
<label for="post-content">Content</label>
<textarea id="post-content" class="make-wysiwyg">{{post.content}}</textarea>
<label for="post-excerpt">Excerpt</label>
<textarea id="post-excerpt" class="make-wysiwyg">{{post.excerpt}}</textarea>
{{#if post.published}}
<button value="save">Save</button>
<button value="unpublish">Unpublish</button>
{{else}}
<button value="save">Save Draft</button>
<button value="publish">Publish</button>
{{/if}}
<button value="cancel">Cancel</button>
</form>
</template>
publish():
Meteor.publish('post', function (id) {
return Posts.find({_id: id});
});
Helpers:
Template.adminPostsEdit.helpers({
post: function () {
return Posts.findOne();
},
isNewClass: function () {
return !this.id ? 'new' : '';
}
});

You should do that in the template's render function.
Template.adminPostsEdit.rendered = function() {
$('.make-wysiwyg').wysiwyg();
})

Partial view with ajax and jQuery UI.Dialog

I am using a standard MVC4 EF5 setup and have a standard view which loads data from the db onto a table.
At the start of the table I have a column for each record with an Add button. The functionality I want is to click the button, popup a model dialog box with a form and add something to the item in the grid that was clicked (a 1 to many).
Lets say I have a list of vans available shown in the list. And when I click the add button beside the particular van where I want to add a passenger, I want a popup to show that allows me to type the details of the passenger so they can be assigned to that van.
I think I am over complicating this. But my brain is fried. I tried partial views with ajax. I tried jQuery UI.Dialog. Im just lost. I am trying to figure out how to find the id of the record I clicked (given the buttons are all generated by a for each loop in the view as normal and numbering them 1 to X does not tell me the id of the record I clicked). So even if I get the popup showing, I wont know which van to assign the passenger to.
If your woundering where the passenger list is coming from, its another table. And effectively any passenger can be assigned to any van. Its hypothetical.
Im actually working on a document generator and so there is a many to many relationship between document parts and documents (a given document part, can appear or belong to many documents, and a document can contain many document parts). I know its messy, this is why I did not want to use the real example.
I'm thinking its maybe an easy enough problem to solve but I have been at it since Friday and the brain left home!
Edit: Adding Code:
Here is the main view: The main problem I am having with this is the way the grid is constructed. I think its partially razor, partially html, partially html helper, and partially javascript. I don't know which part is which, but I just need to get a popup to show for each button in the table, and to have an id I can assign values to. I cant figure out how to do it here.
Html.Grid(dbaccess().Where(c => something = something
).Select(o => new
{
Name = o.Name,
Comment = o.Comment,
Status = o.Status,
}
, "grdConfiguration", 0, htmlRowClass: (p) => (row++ % 2 != 0) ? "" : "oddRow"
, columns: new[]{
//THIS IS THE PROBLEM LINE BELOW .... It shows a button in the table, but...
//how do I make it unique. Is it even necessary to do so.
// How do I get the ID of the record at this location when this button is pressed.
//This is the code as originally posted: For context
new Helpers.GridColumn(value: (a) => "<input type=\"button\" class=\"btn\" id=\"BtnHello\" value=\"Add\" />"),
//for some reason when I try the following alternative as suggest by the answers so far - it doesn't work.
new Helpers.GridColumn(value: (a) => "<input type=\"button\" class=\"btn\" data-ThisId=\"#model.SomeId\" value=\"Add\" />"),
//THIS IS THE PROBLEM LINE ABOVE....
there is more columns but this button calls the jQuery...
On this view I also have some Div tags in which to load the partial... I can actually get this to popup. But that's about all I can do. And only when I click the first button in the table.
<div id='SomePopUp' style='display: none;'>
//#using (Html.BeginForm())
//{
// <div>
// <span class="display-label">Quantity: </span>
// <span class="display-field"><input type="text" id="txtQuantity" /></span>
// </div>
// <div>
// <span class="display-label">Comments: </span>
// <span class="display-field"><textarea rows="7"></textarea></span>
// </div>
//}
</div>
I also have a script section on this view with the code for the popup:
<script type="text/javascript">
$("#BtnHello").click(function ()
{
$("#SomePopUp").dialog(
{
resizable: false,
height: 400,
width: 400,
modal: true,
title:"add to {Some ID}:", //I want the id to show here so I know I have the record I want.
buttons:
{
Submit : function ()
{
$(this).dialog('Some Text');
},
Cancel: function ()
{
$(this).dialog('close');
}
}
});
});
</script>
I have a controller:
[HttpGet]
public ActionResult AddExtra(int id)
{
//Fairly sure I should be doing something with this id, but how do I get it from the button.
return PartialView();
}
And for the partial view I have
#model CM.ViewModels.AddExtraPackagesViewModel
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal">×</button>
<h3>Add Something</h3>
</div>
<div>
//I was using ajax here...
#*#using (Ajax.BeginForm("DoSomething", "Something", FormMethod.Post,
new AjaxOptions
{
InsertionMode = InsertionMode.Replace,
HttpMethod = "POST",
UpdateTargetId = "list-of-something"
}))
{
<div class="modal-body">
#Html.TextBoxFor(x => x.Quantity);
#Html.TextAreaFor(x => x.Comment);
</div>
<div class="modal-footer">
<button class="btn btn-success" id="submit">Save</button>
Close
</div>
}
</div>
I made a little view model too but...
public class AddExtraViewModel
{
public int Id { get; set; }
public string Quantity { get; set; }
public string Comment { get; set; }
}
I apologise if this is all over the place but I did not write the original code. There were about 7 other programmers here before me and I'm just struggling to get through it.
Any help would be appreciated.

I think you would want something like this (using jQuery and jQuery UI):
Controller:
public ActionResult SomeAction(int id) {
return View(new YourModel { Id = id });
}
Partial View:
#model YourProject.Models.YourModel
// Partial view content e.g. the form etc.
Your view:
/<!-- html etc. -->
<table>
<tr>
<td>Add</td>
</tr>
</table>
<script>
$(function(){
$(".add-button").click(function(){
var options = {
autoOpen: false
}
var dialog = $("<div>").dialog(options);
var id = $(this).data("theId");
dialog.load("the/url/to/the/controller/action", { id: id }, function(){
dialog.dialog("open");
dialog.find("form").submit(function(){
// do stuff
dialog.remove();
return false;
});
});
});
});
</script>

if you are building buttons in a forloop you don't want to define an id on the button. Duplicate id's on a view can cause lots of issues. Use a class on the buttons instead to trigger off of and use $(this) in your script to get details of the button that was clicked. To access buttons on a partial or on items that are added to your page after page load you need to tie the click event for that button to the document like this
$(document).on("click", ".btnDetails", function(){
//your script here
});
The other example uses "this" and shows how you can pass the id of the clicked button back to the controller. The controller will need to be a little different though
public PartialViewResult PopulatePartial(int ID){
var Model = //populate your model based on the passed id
return PartialView("PartialViewName", Model);
}