I am trying to create a form that allows the editing of multiple rows of data. I have no problem looping through and getting input boxes to render...I just cannot get the name attributes to output correctly.
I know that in order to submit a collection you need to post back an indexed name where the index is sequential starting at 0.
<input name="Books[0].Title" />
<input name="Books[1].Title" />
and so on...
Now, I can get the EditorFor function to output my proper name with given the following loop code
#For n = 0 To (Model.Books.Count - 1)
#Html.EditorFor(Function(m) Model.Books.Item(n).Title)
Next
giving me
<input name="Books[0].Title" />
<input name="Books[1].Title" />
and so on...
My problem is VS shows the following warning
Using the iteration variable in a lambda expression may have unexpected results. Instead, create a local variable within the loop and assign it the value of the iteration variable.
Yet when I change the loop to
#For n = 0 To (Model.Books.Count - 1)
Dim item = Mode.Books.Item(n)
#Html.EditorFor(Function(m) item.Title)
Next
I get
<input name="$VB$Local_item.Title" />
<input name="$VB$Local_item.Title" />
and so on...
Any thoughts? Should I just ignore the warning?
Thanks.
Jason
MVC works by actually breaking apart the lambda expression, and seeing what it's made of. It doesn't just execute the lambda and get the result. So you need to actually use the model parameter in the lambda for it to work. This should do it for you:
#For n = 0 To (Model.Books.Count - 1)
Dim index = n
#Html.EditorFor(Function(m) m(index).Title)
Next
Related
I have a form with some dynamic inputs, and I need to define a readonly computed field, which will have a value count from other fields. This I am doing using x-bind:value='myFormulaFunction()' and it shows the value on the field correctly, and it even updates live if the variables change.
The problem is how to sync this count value back to the model. Even when I define x-model on the field, it doesn't update with the value. And apparently no functions like #change and #input are triggered on the value update either, neither does x-effect.
I made a quick fiddle here: https://jsfiddle.net/janzikmund/cm3zqeyj/12/
I know I should probably make a get function to achieve this, but I am doing this within x-for of dynamically generated array and having the logic on the field itself would just be much more convenient. Anything I am missing?
For that purpose you can use the $watch magic method that actually supports watching for multiple variables. So when one of the variables changes, it updates the value of count.sum.
Note: $watch checks for each child attribute, so don't watch the whole count variable because it will cause an infinite loop.
<script defer src="https://unpkg.com/alpinejs#3.x.x/dist/cdn.min.js"></script>
<div x-data="{ count: { f1: 0, f2: 0, sum: 0} }"
x-init="$watch('count.f1,count.f2', () => {count.sum = !isNaN(count.f1) && !isNaN(count.f2) ? parseInt(count.f1) + parseInt(count.f2) : 0})">
<input type="number" x-model="count.f1">
<input type="number" x-model="count.f2">
<input type="text" readonly x-model="count.sum">
<h2 x-text="count.sum"></h2>
</div>
I need to click this input only if it has "aria-checked ="true"
<input class="mat-checkbox-input cdk-visually-hidden" type="checkbox" id="mat-checkbox-131-input" tabindex="0" aria-checked="true" style="" xpath="1">
Ruby:
aria_checked = true
if aria_checked = true
impressora_etiqueta = "//mat-checkbox[#id='mat-checkbox-23']/label/div"
page.find(:xpath, impressora_etiqueta).click
end
There are many ways to do what you want - simplest is probably
page.first('#mat-checkbox-23[aria-checked="true"]', minimum: 0)&.click
which will look for the first element with the given id and aria-checked = "true" and click it if one exists.
Note: the id in your test and sample HTML didn't match so I went the id from your test, adjust as needed. Also you have a class of cdk-visually-hidden shown -- If that's actually making the element not visible on the page, then this won't work and you'll need to add more surrounding HTML to your question with a better description of exactly what you're trying to do (you can't click on non-visible elements)
I have a form that will send an array of data to an ASP page.
Let's say this array is called "matrix".
Usually, on the ASP receiving the form, I will write this out to retrieve the form inputs from the array "matrix".
Request.Form("matrix[]")(i) where i = 1, 2, 3 which are the elements in the array.
Let's say I want to do make a variable like this
a="matrix"
and I want to use this variable a and put it into the request form, instead of writing "matrix", so that it would look something like this
Request.Form(a[])(i)
How can it be done? For now, all my attempts are showing blank. e.g. when I try to make them appear on the page with response.write, nothing shows up.
Please help me or let me know if it cannot be done, I've been spending hours on this.
Request.Form("matrix[]") is taking a string value of "matrix[]" not an array of strings called "matrix".
So you need to do either
a = "matrix[]"
Request.Form(a)(i)
or
a = "matrix"
Request.Form(a & "[]")(i)
Unlike PHP which requires adding square brackets, in classic ASP you just have to give the same name to the elements you want to be combined into an array.
The HTML should be:
<input type="text" name="matrix" />
<input type="text" name="matrix" />
<input type="text" name="matrix" />
Then you can iterate over the submitted values like this:
For x=1 To Request.Form("matrix").Count
Response.Write("Value of matrix #" & CStr(x) & "is: " & Request.Form("matrix").Item(x))
Next
Note that all elements are included, even if user left them empty.
<input type="text" value="Phone" name="Phone" />
I can't set using Id as like below. I dont have rights to change the tag as well. Is ther any option using name value inorder to set value?
Set Helem=IE.document.getElementByValue("Phone")
Helem.Value = "1234565678"
Assuming IE in your sample is some instance of internet explorer or Shell.Application, use the following sintax
Set Helem = IE.document.getElementsByName("Phone")
And it will not return a reference to the element, but a HTMLCollection of elements. From your code, it can be, more or less, handled as as array. Assuming there is only one element with that name, reference to it will be in Helem(0)
I want to restrict entry of input onto a field of type number such that input cannot be outside range of min-max specified in the html.
input type = "number" min = "1" max = "5"
Is there a way of outputting the number field without the text box and i would rather not use
"input type = range"
as slider does not show value currently selected
Please help.
Thanks.
Based on what you said, I suggest using a simple input text field and check it's value validity on submission via JavaScript (as #Kush mentions above). You could also check it as the user types, or moves focus away from that field.
<form>
Only 1 to 100 <input type="text" name="number" pattern="\d{1,2}(?!\d)|100" title="one to hundreed only">
<input type="submit">
</form>