Controller Coding
List<Map<String,Object>> rows=globalDao.list("select * from hosp_conf");
System.out.println(rows.get(0).get("hosp_id"));
model.addObject("list",rows);
return model;
View File
<input type="text" name="name" value="${rows.get(0).get("hosp_name")}" required>
I want to access my list element in spring form using specific index.
Above Sysout stament print excat value in console
How can I access it?
In jsp you can access a list index using the syntax -
${list[index]}.
In your jsp[, you need to use model attribute name that you have added at your controller.So instead of use rows you need to use list.
I don't know about the object in your list. But you can try like this -
<input type="text" name="name" value="${list[0]["hosp_name"]}" required>
Related
I am looking for a way to pass the whole object through without having to use <input type="hidden" /> on the different variables. It seems like the th:object will not carry over the incoming information on the "whole object"
<form action="#" th:action="#{/api/result/save}" th:object="${result}" th:method="post">
<!--- Input fields -->
<input type="hidden" th:field="${result}"> <---- Not working.
<button type="submit" class="btn btn-primary" value="spara">Spara</button>
From the model I have
Result result = new Result(teams);
result.setTeam1ID(aTeam1.get().getId()); // This variable will not be changed in the HTML so I would like to pass that to the next page
// Other variables
When I get to the /save the Result will only contain variables set in Thymeleaf it will not retain the information from the original model above.
#PostMapping("/save")
public RedirectView saveResult(Result result, Model model) {
service.saveResult(result);
Thymeleaf is use to generate view, you can store some variable but not the whole object.
Though you can try these method:
If you object is already stored at server-side in memory or data base. You just pass the unique key of that object get it back using hidden input type.
Store the object into session then get it from there whenever requered.
I have a form fields in the view as:-
<input type="email" name="user[email]">
<input type="text" name="name">
<input type="text" name="designation">
While submitting this post request, I have a rule defined as:-
app\Http\Requests\StaffEditRequest.php
$rule['user.email'] = 'email|unique:users';
However, when laravel tries it to validate the request it queries the database as if there is a field name "user.email" in the users table. How to customize the field name so that I can tell laravel that I am looking for email field in the users table and not user.email?
You need to define the column in in unique parameter. Do like following:
$rule['user.email'] = 'email|unique:users,email';
Ref: Laravel Doc
How do I correctly create internationalized labels for my form components so that when displaying feedback messages an internationalized field name is displayed instead of the name of the field in the java code?
I've read this:
https://cwiki.apache.org/WICKET/everything-about-wicket-internationalization.html
as well as the documentation for wicket's xhtml tags:
https://cwiki.apache.org/WICKET/wickets-xhtml-tags.html
<label wicket:for="name">
<wicket:label>
<wicket:message key="label.name"/>
</wicket:label>
</label>
<input wicket:id="name" type="text" wicket:message="placeholder:label.name" />
This results in the following error:
Last cause: Expected close tag for '<wicket:label>' Possible attempt to embed
component(s) '<wicket:message key="label.name"/>' in the body of this
component which discards its body
If I replace the wicket:message with some arbitrary text it displays the text in any associated feedback messages.
(There's a related jira issue: https://issues.apache.org/jira/browse/WICKET-3903 however I still do not understand what has been done to fix this and what I must do ...)
Just found out there is a way to do this in java:
add(new TextField<String>("name").setRequired(true).setLabel(new Model<String>(getString("label.name"))));
Is it possible to somehow do this in a more comfortable way?
I just tested the following:
<form wicket:id="form">
<label for="input"><wicket:message key="input">some input</wicket:message></label>
<input wicket:id="input" type="text" name="input">
<input type="submit" value="submit">
</form>
And in the java class:
Form<HomePage> form = new Form<HomePage>("form"
, new CompoundPropertyModel<HomePage>(this));
wmc.add(form);
TextField textField = new TextField("input");
textField.setRequired(true);
form.add(textField);
In the property file I provided:
input=SomeInputField
This led to the following screen (if I leave the requiered field empty and press submit.
Is this what you are looking for?
Here is an alternative approach to #bert's that has always worked for me (wasn't aware of <wicket:label>)
The text shown for a FormComponent when a validation error occurs can be specified by means of FormComponent.setLabel(IModel). The shown text will be the result of the IModel's getObject().
TextField comp = new TextField("comp");
// Use internationalized text from XML resource file
comp.setLabel(new StringResourceModel("formResources.comp.label", this, null));
Notice this has nothing to do with <label> nor FormComponentLabel. FormComponentLabel is a component that can be used to model <label> tags.
You could even subclass FormComponentLabel to provide the label text based on FormComponent.getLabel(), and maybe output an extra mark when the field is required:
public class MyLabel extends SimpleFormComponentLabel{
private boolean required;
public MyLabel (String id, LabeledWebMarkupContainer labelProvider) {
super(id, labelProvider);
if (labelProvider instanceof FormComponent){
required = ((FormComponent)labelProvider).isRequired();
}
}
protected void onComponentTagBody(final MarkupStream markupStream,
final ComponentTag openTag) {
String mark = "";
if (required){
// could be for instance "*"
mark = getString("formResources.requiredField");
}
String text = getModelObjectAsString() + mark;
replaceComponentTagBody(markupStream, openTag, text);
}
}
{
TextField component = new TextField("component");
component.setRequired(true);
component.setOutputMarkupId(true);
IModel labelModel = new StringResourceModel("formResources.component.label",
this, null);
component.setLabel(labelModel);
add(component);
add(new MyLabel("componentLabel", component);
}
<label wicket:id="componentLabel"/>
<input type="text" wicket:id="component"/>
This way you would have clean way of
Setting the FormComponent's text to an internationalized resource string
Reusing exactly the same resource string transparently for the <label> tag and even adding custom marks to it based on FormComponent's properties.
Another alternative is to use the key attribute of <wicket:label/>, like so:
<label wicket:for="name">
<wicket:label key="label.name">Placeholder label</wicket:label>
</label>
<input wicket:id="name" type="text"/>
Unfortunately this attribute is not documented on the wiki page describing wicket's xhtml tags. All attributes supported are documented using JavaDoc in the class handling the tag (org.apache.wicket.markup.html.form.AutoLabelTextResolver).
The advantage of this alternative is that there is no additional coding required.
Wicket throws an exception to tell you that your <wicket:message> tag will be removed because the body of the <wicket:label> tag is replaced. The problem is you cannot nest the <wicket:message> tag inside the <wicket:label> tag (and shouldn't need to).
either this (Option 1):
<label wicket:for="name">
<wicket:label key="label.name"/>
</label>
<input wicket:id="name" type="text />
or this (Option 2):
<label wicket:for="name">
<wicket:message key="label.name"/>
</label>
<input wicket:id="name" type="text />
should work for you and result in HTML something like the following (assuming the properties file contains label.name=Name):
<label for="someMarkupId">
Name
</label>
<input id="someMarkupId" type="text" />
The difference is that if you set the label for the component through the Java code like so:
component.setLabel(new Model("value set in code"));
then using the Option 1 will result in the label being set to "value set in code", while using Option 2 will still result in the label set to "Name". Also if the label is set through Java code, and the key is missing from the properties file the Option 2 will throw an exception, while Option 1 will simply use the value set in the code.
I prefer this:
<label wicket:for="name"><wicket:label />:</label>
<input type="text" wicket:id="name"></input>
Just make sure to set the label in the FormComponent using setLabel, so the only java needed is:
add(new TextField("name", nameModel).setLabel(Model.of("i18n.name")));
This will be rendered as (in Dutch):
<label id="name63-w-lbl" for="name63">Naam:</label>
<input type="text" value="" name="name" id="name63">
Isn't that possible to use "Ajax.BeginForm" in a collection model? Form repeats itself, Html elements are rendered correctly, values are ok. However, all parameters going through action are being null.
I've realized that, it posts like that:
ProductList[0].Id 501
ProductList[0].quantity 1
However it should be like
Id 501
quantity 1
Any Ideas?
You should use prefix in UpdateModel function:
UpdateModel(MyModel, "MyModel")
I solved by using pure html, thanks anyway.
<input type="hidden" value="#Model.Id" name="Id"/>
<input type="text" value="" name="quantity"/>
As you can see here, I'm allowing a user to dynamically create a table of data, and storing the ids of the table in a hidden field (in the example it's a text area so you can see it, and the final solution will be Guid rather than integers).
My question is simply this: What data type should I use on the server/MVC action to take the data held in the textarea/hidden field?
At the moment I have a string, and am contemplating doing a load of .split()'ing and whatnot, but it doesn't feel right!
Ultimately I need some sort of IEnumerable<Guid, Guid> thing?!?! so I can do a foreach and get each pair of Ids.
I'm sure the answer will be simple, but I can't think of what to do.
Any help appreciated.
If your UI has multiple, like-named form fields, they will be submitted to your action method and bound properly to an array. We could use string[] for this case.
<form action="">
<input type="text" name="guids"/>
<input type="text" name="guids"/>
<input type="text" name="guids"/>
<input type="text" name="guids"/>
<input type="submit" value="Submit"/>
</form>
Then your controller could handle them like so:
public ActionResult MyAction(string[] guids)
{
guids.Count == 4 // if all four fields were filled in.
}
Note that if there is just a single guids value sent by the form, the string[] guids will still work - it will contain just a single item.
Finally, note that if no values are entered, the array value will be null, not an empty array.
You can actually bind to a list from your model, take a look at this post
http://haacked.com/archive/2008/10/23/model-binding-to-a-list.aspx