I need to have the POST action be to an absolute URL (e.g., http://www.cnn.com). Is there a way to use Html.BeginForm() helper and pass it the url?
BeginForm method has several overloads.
In order to set the action attribute on the form tag with the desired url, you need to use following overload of BeginForm:
BeginForm(String, String, FormMethod, IDictionary<String, Object>)
// here are the parameter names:
BeginForm(actionName, controllerName, method, htmlAttributes)
Since you want to post to an external site, there is no need to set actionName and controllerName, just leave them as null.
#Html.BeginForm(
null, null, FormMethod.Post, new {#action="http://cnn.com/post"}
)
This will not encode the action parameter.
All that the HtmlHelper.BeginForm method does is help you to create a <form> tag that targets a local controller. If you're posting to an external site, just write out the actual <form> tag, i.e.
<form action="http://www.example.com/someaction" method="post">
Actual form content in here
</form>
That's all there is to it. MVC forms are not like the forms in ASP.NET WebForms where you have a bunch of ViewState and event fields and other magical elements. They're just regular old HTML forms.
check the mvc source code, html.beginform method not only create the native html form only, but also add sth for client validation which just i want,
if (htmlHelper.ViewContext.ClientValidationEnabled)
{
htmlHelper.ViewContext.FormContext.FormId = tagBuilder.Attributes["id"];
}
so it will be a problem, i just write my own extension
Related
Is it possible to prevent the data from being automatically passed to the input fields. For example - if I have an edit page where I want to change the data and I want the user to type the data again without giving him the pre-filled old data. I was looking over some documentation about the ModelState and the asp-for tag but I just couldn't find the answer.
I was looking for help and I found this post here. Well I want to do exactly the opposite.
asp-for tag helper functionality_
EDIT:
I tried to change the value attribute of the input field to empty string and it worked, however I still would like to know if there is an asp.net approach.
If you don't want to pass data from action to Edit view,you can return a view with an empty model like this:
public IActionResult Edit()
{
return View(new YourModel());
}
Or you can try to use id and name attribute to replace asp-for,so that the data will not be binded to inputs.Here is a demo.
Change
<input asp-for="TestProperty" />
to
<input id="TestProperty" name="TestProperty" />
I have the following construction in the template to check whether attributes are full
{{#if:{{{typeip|}}}|'''Type IP:'''{{{typeip}}}|<big>'''Type IP:'''</big><span style="color: red">not filled in</span>}}
I want the typyap attribute to be a property so that I can find it by semantic search or by using a query via the #ask function.
I tried the following construction
{{#if:[[typeip::{{{typeip|}}}]]|'''Type IP:'''{{{typeip}}}|<big>'''Type IP:'''</big><span style="color: red">not filled in</span>}}
But it doesn't work. The #asc function returns an empty request and the type ip property page is empty. Can you tell me what I'm doing wrong? I performed reindexing using a service script rebuildData.php But that doesn't help either. I tried to insert the property in various other places in the template, but it doesn't work either. The template is filled in using the form.
Thank you in advance!
Of course, it doesn't work. You invoke the {{#if:}} parser function incorrectly.
Its parametres are:
the condition,
the value returned if the first parametre does not evaluate to an empty string or whitespace,
the value returned if the first parametre is empty.
Therefore the semantic annotation should be in the second parametre, not the first:
{{#if:{{{typeip|}}}
| '''Type IP:''' [[typeip::{{{typeip}}}]]
| <big>'''Type IP:'''</big><span style="color: red">not filled in</span>
}}
{{{typeip}}} should be bare text without any wiki formatting. If you must pass wikitext to it to convert wikilinks into semantic annotations setting properties of the type Page, the simplest way will be as follows:
Install Scribunto,
create Module:Inject with the following content:
return {
property = function (frame)
local wikitext, property = frame.args[1], frame.args[2]
local annotation = mw.ustring.gsub (
wikitext,
'%[%[([^|%]]+)(|[^%]]*)?%]%]',
'[[' .. property .. '::%1%2]]'
)
return annotation
end
}
put the following in your template:
{{#invoke:Inject|property|{{{typeip|}}}|typeip}}
The template will convert any wikilinks in {{{typeip}}} like [[A]] or [[B|C]] into semantic annotations like [[typeip::A]] or [[typeip::B|C]].
<div data-collapse class="left-justify" id="requirements">
#Html.Raw(string.Format(#_stringLocalizer["RegisterNoticeMessage"], #Html.ActionLink(#_stringLocalizer["RegisterLinkDisplayName"], "Register")))
</div>
In this piece of code, #Html.ActionLink() is returning Microsoft.AspNetCore.Mvc.Rendering.TagBuilder instead of returning anchor element containing URL path to the specified action.
What is the right way to use #Html.ActionLink() in string.Format(). Or, do I missing anything, here?
The helper method Html.ActionLink always returns a TagBuilder object. When you pass such an object into a string parameter, the ToString() method will be called, resulting in your observed output (the class name: "Microsoft.AspNetCore.Mvc.Rendering.TagBuilder").
It seems to me you are trying to create a hyperlink in a rather weird way. Have you tried using the Url.Action helper method? This method returns a plain old string, ready to plug into any href attribute.
E.g. this code would be equivalent of what you're trying to achieve:
#Html.Raw(
string.Format(_stringLocalizer["RegisterNoticeMessage"],
"" + _stringLocalizer["RegisterLinkDisplayName"] + "")
)
Sidenotes:
It is possible get the string value of a TagBuilder, as illustrated in this post.
No need to repeat # when you're already working in Razor/C# context.
Be extremely careful when using Html.Raw as it might result in XSS vulnerabilities.
I understand how to pull out the data attribute in JQuery from an HTML form, but can it be done from within a .cfc controller to which a form is passed?
Page.cfm
<cfform action="controller.cfc" method="getData">
<cfinput name="uploadMyData" type="submit" data-primaryID="123">
</cfform>
Controller.cfc
function getData(rc){
writeDump(rc.uploadMyData.?????(primaryId)????);
}
Not sure if the data attribute is stored in any way in the struct.
I tried a getMetaData on the rc.uploadMyData but just got a list of java functions.
Update
Adrian J. Moreno
Data attributes are just markup that impact the internal data object of the element. They are not part of a form request. You wouldn't submit a form to a CFC file either. Using Ajax, you can read the value from the data attribute and pass it to the server as part of the request's data packet.
So in Page.cfm
<script type="text/javascript">
var otherData = $("#myForm").serialize();
function sendForm(){
var primaryID = $("#submitData").data("primaryID");
jQuery.post("urlpath/controller/",'{"id":'+''+primaryID+'}', function(dataReturn, status){
//I want to get my form and submit the other data as well to the controller
}
}
</script>
<form id="myForm" action="sendForm()">
<input name="uploadMyData" id="submitData" type="submit" data-primaryID="123">
<input name="importantThing" value="#importantVariable#" type="text">
</form>
pass it to the server as part of the request's data packet.
how would I pass them together?
I want this form submission to redirect to another page so I don't see how I couldn't use the controller? The form data should go the newPage.cfc to process it and get it ready for output on newPage.cfm. I'm using framework one but that doesn't change much.
Thanks for the help, what do you think?
Update 2
Ok, now I ask myself why I would want to submit a form with both ajax and coldfusion form submission together? I realize that's not what should be done. I can either
Submit the form via JQuery/Ajax with no page reload, and include the data attribute in the post url and include the serialized form data
Page.cfm
<script type="text/javascript">
var otherData = $("#myForm").serialize();
function sendForm(){
var primaryID = $("#submitData").data("primaryID");
jQuery.post("controller/method/?primaryId="+primaryID+"",otherData, function(dataReturn, status){
//do stuff with dataReturn or do a javascript redirect
}
}
</script>
Controller.cfc
function method(requestContext){
//do stuff with that otherData, all stored in request context. includes the primaryID value i appended to the url
//send it back to the Page.cfm
fw.renderData("rawjson",jsonString,200,"");
}
and if that made it back ok, I could run a function back in my original view with that information. Like display it on the page.
Submit the form traditionally which would result in a page reload. Include a hidden input type with the value that I want to pass.
Page.cfm
<cfform action="controller.method" method="getData">
<cfinput name="uploadMyData" type="submit" value="Submit Form Button">
<cfinput name="primaryID" type="hidden" value="123">
</cfform>
Controller.cfc
function method(requestContext){
//do stuff with requestContext.primaryID
//go to the view method.cfm or do a fw.redirect("new page or back to the page i came from");
}
Why would we want to submit the form twice? just do one or the other.
Matt, I think you're confused about a number of things that are quite basic to HTML, JavaScript and jQuery and have nothing to do with ColdFusion.
Let's start with an HTML Form.
<form id="{{unique_dom_value}}" action="{{uri}}" method="{{http_verb}}">
unique_dom_value: Some string unique to the document. Allows you to reference the entire form object using JavaScript.
uri: The URI to which you submit the form for processing.
http_verb: Defaults to GET, but you should most often use POST.
The URI you're trying to post to in just controller.cfc, but that won't do anything but redirect you to the ColdFusion CFC inspector.
In the context of most MVC frameworks, index.cfm?event=handler.action uses the underlying framework to call a function named action within a CFC named handler. Without a framework, you have to do that manually. So if you have a CFC named controller.cfc and want to send your form data to a function named myFunction, you need to say action="controller.cfc?method=myFunction.
But that's not right either. When you submit a form, the browser expects to load the URI that's found in the action attribute. But your CFC function doesn't respond with HTML, it responds with something else. Maybe a query object, maybe JSON. This is why you would use jQuery.Ajax() to send the form data (including the data attribute values) to the CFC's function, which should return data in JSON. Once you get a response, you can continue processing on the same page or redirect to another page.
However, since you're using Framework One, I would look into the documentation on using renderData() within one of your handler functions.
Here is the idea:
When the user wants to see /controller/action, then I want the page to have a "robots" meta tag with its value set to "all".
When the user wants to see /controller/action?sort=hot&page=2 (i.e. it has a query string), then I want the page to have a "robots" meta tag with its value set to "noindex".
Of course this is just an example and it could be another tag for the existence of this question.
At what stage in the MVC architecture could I place a hook so that the view generates the tag I want in the master page?
I do something similar for generating page titles and it works well. Put your tag in your masterpage as normal:
<%= Html.Encode(ViewData["Title"]) %>
Then subclass ActionFilterAttribute and override OnActionExecuting. From there you get access to the controller context and can set your viewdata to whatever you want.
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
filterContext.Controller.ViewData["title"] = "whatever";
}
last step is to put Attribute your controllers that you want to use the filter context. You can inherit from a base controller if you want to add the attribute to all classes. There are also overloads if you want to pass parameters. In my app. I actually pass the page title.
Hope that helps.