I have a google autocomplete input, and when the user selects one of the suggested addresses I have a place_changed function that splits the returned address into the fields necessary for a form, including lat & lng.
If instead the user types in an address and doesn't select one from the autocomplete list, then I need to geocode it to get the information. The place_changed function doesn't fire. So, I can put an onchange listener on the input which handles the direct user input.
The issue lies in that both the place_changed and onchange events fire when a suggestion is chosen from the autocomplete list.
Is there a way, in the onchange handler, to detect that the reason for it being called is the result of an autocomplete selection? it can then return without taking any further action.
Their is many way to change the address we can put string selection as a fire so when they throw the address Google goes to individual address not by the suggestion like the blue lines can Identifying the photographs not the back view so also needed some more photographer for move futher
Related
As we know, ASP.NET WebForms will generate a Unique ID (as well as name) to a control to prevent collisions in the control heirarchy. Let's say we have a TextBox control with an assigned ID of "MyTextBox" in the markup. If this textbox is on a page with a Master Page then the TextBox control will be given a Unique ID of "ctl00$MainContent$MyTextBox" or something similar.
What I want to know is, for a given page, is it possible to know what the prefix WILL BE? In my above example I would like to know all controls I create on that page will be assigned with a prefix of "ctl00$MainContent$". I have examined the Page object and I cannot find an easy way to extract this information. Note: inspecting already existing controls on the page (like the TextBox) isn't an option. I simply need to know, at run time, what the prefix would be.
-- EDIT: Why do I need to do this? --
Ultimately I am trying to solve the problem that this post illustrates:
ASP.NET 4.5 TryUpdateModel not picking Form values in WebForm using Master-Page
I'm using the ModelBinding features introduced in ASP.NET 4.5. Problem is, as the above post points out, is that the name value collection found in the form will NOT match up with your model's properties. The built-in FormValueProvider expects a one-to-one match with the form key (name) and the model's properties. Unfortuantely, the form's keys will have the typical "ctl00$MainContent$" prefix to the names.
I have a semi-working solution where I created a custom IValueProvider that compares the end of the form key with the model's property. This works 95% of the time, but there's always a chance of multiple hits.
Ideally, and this is what I'm trying to figure out, if I could determine WHAT the prefix is I can then prefix that the IValueProvider's passed in key, look for that in the form and find the exact match.
So that is why I'm wondering if there's any way to know what the prefix should be for a given page.
The real answer is to simply code in such a way that you never have to know this information. that might not always be easy - but that's quite much what we do. You can certainly in code behind get/grab the "id" of the given button.
so for example, I become VERY tired of having to wire up a little toast message all over the place. So, I put in a little js routine (in the master page).
But I did need the client ID of a given control.
Well, the code behind needed (wants) to place the toast message next to whatever I clicked on.
So my server side "toast" message caller of course will after the server side code is done does the common "script" inject that will run when the page finally makes it final trip back down to the browser, displays the page, and then of course runs that script I injected.
So, my server side code does this:
MyToast2(Me, btnUpdate.ClientID.ToString, "Update ok!", "Settings changed")
So note how I get/grab/pass the "ID" of the control that the server is going to render. You can use ClientID to get the the final "ID" used for that control in code behind.
So, that btnUpdate is just a simple button placed on the web form. But who cares what super ugly "ID" the server assigns. i just need the "id" of the control so the JavaScript client side can pick up that control - and thus know/get/have the position of the control, and thus I get this result:
Or if I am some place else - again I can call that js routine - and that routine needs the current control. so might have this:
So, I can now just call a routine and pop up a message - not have to write any new js code for the gallzion notices and little pops I have all over the place.
so the little javaScript routine of course does this:
function toastcallm(cntrol, h, t, d) {
var cmd = $('#' + cntrol);
var mypos = cmd.position();
bla bla bla
But only important was that I get/determine and pass the used server "client" id to that routine - I don't really care what it is , or how to see, or how to list them out. I suppose a better jQuery selector or using wild card might work - but I really don't want to know the control ahead of time - but only that I can get the clientID used when I need it.
I simply write code that assumes somewhere along the way when I need such a client id, I simply get it and use it.
So, on the server side? Well, we always build and write code based on the control ID, but you want to get your hands on the actual id? Then you can use in the server code behind:
btnUpdate.ClientID.ToString
(ie: somecontrol.ClientID).
i would like to track user behaviour on the website depending on they are logged in or not.
I’d like to create my own variable in JavaScript, kind of userState with different values, let’s say, logged and guest, and I want to pass it so dataLayer.
How to do it? Can I do something like this
dataLayer.push({‘userType’: userState})
?
Basically this will work. However, GTM will only update its internal state when a GTM event is registered. When you you dataLayer.push({‘userType’: userState}) the new value for userType will not be automatically available. It needs to be followed by an event, either one that is set up via a GTM auto event variable (such as gtm.click when you use a click trigger), or a custom event:
dataLayer.push({
"userType": userState,
"event":"updateUserState"
});
(also note that you use backticks in your example, which will give an error - you must use straight or double quotes).
A custom event is literally the key "event" with a custom value pushed to the dataLayer. GTM overwrites the push method of the dataLayer array to scan new pushes for the event keyword, and then updates the available variables within GTM.
I have three different fields/textbox widgets, that rely on querying the same data source to be checked to avoid duplication. For reasons, I do not want to turn on the unique/required for those three fields.
I put some code to check for validation. My problem is that when I call the form's validate function, it takes some time till the validation comes back with an error message. However the form's validate returns immediately and allows people to click Submit.
How can I avoid this problem?
Block till validation kicks (setTimeout function?)
Set a separate invisible field such as working and set the validationError on the field and clear after validations clear? This will probably be a numeric field so that I can wait for all streams in parallel to finish.
Final question. is Validate a blocking function as it goes through the fields? I am guessing Yes.
I would like to do some transformation on the submitted data based on which button on my form was clicked. Here is the scenario:
I have a text field named chain which holds the command chain.
I have a command text field that holds the last command.
I have two buttons on the form: Send and Send chain.
When Send is clicked, chain is set to command, erasing whatever was in it before. When Send chain is clicked, however, the contents of command are added to the end of chain after a delimiter, effectively creating a chain of commands.
I need to be able to check to see which of these two buttons was clicked so that I can set chain to the appropriate value.
Why am I not doing this in the controller? The problem is that I need to modify the value of chain. Since I cannot modify the values of an already-submitted form, I need to do this in an event, I assume. As I mentioned above, I need chain to either be equal to command, or chain + [delimiter] + command.
If I understood you correctly, you don't need an event at all. There is a built in method isClicked() since #2.3. Example from documentation:
if ($form->isValid()) {
// ... do something
// the save_and_add button was clicked
if ($form->get('save_and_add')->isClicked()) {
// probably redirect to the add page again
}
// redirect to the show page for the just submitted item
}
Link to chapter.
Update
Normally, the code I showed can be used in event - FormEvents::POST_SUBMIT to be precise, but as you already pointed out, you can not modify form data after submission. To be honest I can't come up with perfectly working example, so I will share an idea hoping it will lead to something, or at least until someone else suggest something else.
How about you add a hidden non mapped field to your form. Then (assuming you are allowed to use javascript in your form) you can attach event listener on when form is submitted and based on which button was clicked you can populate that hidden field with specific value. After that you can add event listener to your FormType and read the value of this hidden field, using FormEvents::POST_SET_DATA.
I am sorry I can not be more helpful as of now. If I came up with something I will edit my post.
Here is what I needed to do:
I couldn't use the POST_submit event because I couldn't transform the data after submission.
The isClicked() of both buttons returned false in other events, because the form hadn't been submitted yet.
The solution is something like this:
$data = $event->getData();
if (isset($data['send']) {
// transform the values here
}
In other words, the only way to check if a particular button was clicked is to check to see if its name exists as an index in the array returned by $event->getData().
Apologies if this is classic ASP 101, but its been so long since I did any ASP Im struggling to understand / track this error down. What makes it worse is Ive inherited this application and I cant ask the original author..
I have a shopping cart that includes an input checkbox and numerous other fields. When the form is processed and submitted it is run through some javascript and then if all is ok, redirected to another page. (Nothing unusual there). Firebug shows that at this point the value of the check box is different depending on its checked state.
When the form is submitted it goes to another page that iterates over the session.Contents() collection, and builds up a string that is sent to a 3rd party. Using fiddler, it appears that whilst the name of the checkBox is in this string, the value is always 'on'
From reading Google, I see that the session.Contents collection is all parameters that have been placed in the session / application. but a grep across all the files in the project directory doesnt turn up anywhere that the checkbox is added to the session.
So, is the cb there simply because it is on the form or used in javascript, or are there other ways of adding the variable into the session. (Grep on the name doesnt turn up any other instances).
And secondly, if the variable is in the session, no matter how it got there, why is it always set to "on". Im assuming that somehow it has been added to the session and set to On before the form is processed. But the checkbox defaults to unchecked, so Im confused!
Can anyone help explain this, or even suggest how I can track it down / fix it. (The obvious answer is to try to force it into the session with the correct value, but I'd like to know why it is misbehaving rather than just ignore it in case I meet something like this again!
Thanks
I am going to assume that you have already determined that the JavaScript is not modifying checkbox state priort to allowing the submission.
When your form is submitted, the fields that are submitted are in the Request.Form collection. When a checkbox is not checked, it is not part of the Request.Form collection. Therefore, there will be as many checkbox fields in your Request.Form collection as you had checked when submitting, and they will all have the value of their respective "value" property.
If you then add these to the Session.Contents collection, they persist until the session ends. If you never explicitly clear the Session.Contents collection, but submit the form more than once with different values, then the Session.Contents collection will continue to accrue more and more (checkbox_name, checkbox_value) pairs until such time as it contains a (checkbox_name, checkbox_value) pair for every checkbox on your form.
You may wish to write a function that clears each one of your form fields from the session, and call this either after processing a form, or before processing a form (whichever makes sense for your application). Alternatively, just use the Request.Form collection.