In an ASP.Net Core web app, I'm passing a List<Parameter> to a view via ViewBag.Parameters. The view also has a SelectParameterViewModel that consists of one property only, an int ParameterId. The objects are then displayed in a table like so (I skipped straight to tbody as the view works fine from a cosmetic perspective):
#model WebApp.Models.ReportViewModels.SelectParameterViewModel
[...]
<tbody>
#foreach (var item in ViewBag.Parameters)
{
<tr>
<td class="col-xs-1">
<form asp-controller="Report" asp-action="Launch">
<div asp-validation-summary="ModelOnly" class="text-danger"></div>
<input asp-for="#Model.ParameterId" type="hidden" value="#item.Id" />
<input type="submit" class="btn btn-primary btn-sm" value="Select" />
</form>
</td>
<td class="col-xs-8">#item.Description</td>
<td class="col-xs-3">
<a asp-action="Edit" asp-route-id="#item.Id">Edit</a> |
<a asp-action="Details" asp-route-id="#item.Id">Details</a> |
<a asp-action="Delete" asp-route-id="#item.Id">Delete</a>
</td>
</tr>
}
</tbody>
I would like the user to click on the button of the chosen table-row and submit either that row's Parameter (preferred) or the Parameter's Id, like I tried to do in this case. I would then do the same with the <a> tags on the third column. The point is that I don't want the user to simply type /Report/Launch/id and run the report, as each user would have its own sets of parameters and should not be allowed to use any of the others', and the ViewBag only contains the list of its Parameter. I can change the view model and/or the receiving controller's argument depending on the solution, both would work. I tried a few versions of the above html, but none would work, while the above returns ParameterId with value 0.
I couldn't find a similar scenario in other SO questions. There were some solutions that involved JavaScript and, correct me if I'm wrong, but that would still show the ParameterId value in the webpage source. While that would be sort-of-ok in this specific case, I have other cases where I definitely would not want that to happen.
What would be an elegant solution to achieve this? Thank you!
Related
I'm new to MVC - I'm creating a simple survey application with a Survey Model and Controller and multiple Views in which users fill out their answers.
In my views I have a table of radio buttons, where each row is a group and the user has to select one radio button in each row. When the page loads, I want none of the radio buttons to be checked, forcing them to make a selection (throwing an error if they do not).
The problem is that the last radio button in each row is being selected somehow by default. I even specifically set one of the other buttons to checked to see what would happen, but when it loads it's still the last one that is checked. I have no idea why that is happening, how to change it, or even then what would be the best way to validate a selection is made in each group when the user tries to move on.
My Survey Model contains these STRING properties: mddbccu, mddtfuu, mddbccub, mddtfuub. There is nothing in my model except the properties.
This is an example of one of the rows of radio buttons in a view:
<tr>
<td>#Html.DisplayNameFor(Function(model) model.mddtfuu)</td>
<td>
<div><input name="mddtfuu" id="mddtfuu0" value="Never" checked="" type="radio"></div>
</td>
<td>
<div><input name="mddtfuu" id="mddtfuu1" value="Rarely" checked="" type="radio"></div>
</td>
<td>
<div><input name="mddtfuu" id="mddtfuu2" value="Sometimes" checked="" type="radio"></div>
</td>
<td>
<div><input name="mddtfuu" id="mddtfuu3" value="Usually" checked="" type="radio"></div>
</td>
<td>
<div><input name="mddtfuu" id="mddtfuu4" value="Always" checked="" type="radio"></div>
</td>
</tr>
Remove "checked" property from each radio button.
Thats it. Simple.......
i.e:
<input name="mddtfuu" id="mddtfuu0" value="Never" type="radio">
I need to be able to use the same drop down list multiple times on a page. The first time i use the 'list' on the select tag, it works fine. The same list does not populate the second select tag i use it on. Here are the details.
In the action class, i populate the ArrayList containing values i need to populate the select tag.
setNames(new SomeDAO().getNames());
In the JSP
<s:select list="names"
id="nameList"
listKey="nameId"
listValue="userName"
/>
This select list populates just fine. If I use the following select tag on the same page (using the same list), it fails to print.
<s:select list="names"
id="rName"
listKey="nameId"
listValue="userName" />
If i replace the 'list' above with #{'test':'test'} (hardcoded list), the tag shows up fine. Looks like the property i set in the Action is getting cleared after the first use. Is that whats happening or am i doing something wrong? I get an 'IllegalStateException: Response already committed' error
Edit 1:
setNames() is used in the action method that deals with the JSP page. It is a simple getter function.
In the JSP, here is what i have.
<tr>
<td align="left" class="td-plain">Add New:</td>
<td class="td-plain">
<s:select list="names"
id="addNameID"
name="addUserNameID"
listKey="reinsId"
listValue="reinsName"
headerKey=""
headerValue="--User Name--"
/>
</td>
<td class="td-plain"><input id="addTreatyNumber" type="text" /></td>
<td class="td-plain"><input id="addReinsPercentage" type="text" /></td>
<td class="td-plain"><input id="addFlatDollarRetentionAmt" type="text" /></td>
<td class="td-plain">
<%if(finance){ %>
<input type="button" class="greyButton" value="Add" onclick="addReinsInfo()"/>
<%}else{ %>
None
<%} %>
</td>
</tr>
and then later down on that page, i have
<tr id='<s:property value="caseGroupId"/>:<s:property value="treatyId"/>'>
<td class="td-plain"><input type='checkbox' id='<s:property value="caseGroupId"/>:<s:property value="treatyId"/>'/></td>
<td class="td-plain">
<s:select list="names"
id="rName"
name="dName"
listKey="reinsId"
listValue="reinsName"
headerKey=""
headerValue="--User Name--"
/>
</td>
<td class="td-plain_"><s:textfield id="tNumber" value="%{treatyNumber}"/></td>
<td class="td-plain_"><s:textfield id="tPercentage" value="%{reinspercentage}"/></td>
<td class="td-plain_"><s:textfield id="rAmount" value="%{flatDollarRetentionAmt}"/></td>
<td class="td-plain"><input type="button" value="Delete" class="greyButton"/></td>
</tr>
If I change the 'list' in the second tag to
list="#{'Test':'Test'}"
the tag shows up fine. Please let me know if i can provide any further info.
Edit 2: I was able to get this to work by setting the drop down list values to the session.
As asked by #Dave and #Quaternion, post the relevant Java/JSP code.
But until then... I've noted that you are not using name attribute in Struts Selects;
while you can refer multiple times from different tags to the same source (the list attribute), to populate the Select from the same list of objects, you should instead specify a different name for each one, to define which variable (sent back to the Action) contains the selected value of which Select;
this may not be the answer to the current question but it will show up to you soon.
I started to work on an ASP.NET MVC4 solution with the SPA template (Single Page Application).
The starting template manage some todo lists with a kind of post-it design.
I slightly modified the template this way:
no more post-it design for dislaying elements
but a table to list all elements + delete + edit button on each element
at the end of the table: an add button
I have now the ability to edit one element in a form tag like this:
<form data-bind="with: currentTodoList, validate: true">
<h1>Edition</h1>
<table>
<tr>
<td>ID</td>
<td><b data-bind="text: todoListId"></b></td>
</tr>
<tr>
<td>User ID:</td>
<td><input class="required" data-bind="value: userId" /></td>
</tr>
<tr>
<td>Title:</td>
<td><input class="required" data-bind="value: title" /></td>
</tr>
<tr>
<td>Category:</td>
<td><input data-bind="value: category" /></td>
</tr>
</table>
<p>
<button data-bind="click: $parent.saveTodoList">Save</button>
<button data-bind="visible: todoListId, click: $parent.deleteTodoList">Delete</button>
<button data-bind="click: $parent.showGrid">Cancel</button>
</p>
</form>
As you can see above, I set the validate data-binding on the form tag and I have some input element with the class required.
When I test this implementation it doesn't work as expected. Example:
If I clear (empty) the userId field (which is required) I have a red validation message (picture 1). OK.
If I fill this userId field again, the red validation messaged disappeared. OK.
Then if I clear (empty) the title field (which is also required) I have the red validation message next to the userId field (picture 2). NOK.
The inverse is also true: userId <--> title. Any idea where is the problem?
Here is a link to download my test VS2012 solution to reproduce the problem.
Ok, so I played with your markup a little, with slight modification to the view model (not using a list, but editing a single entry).
Take a look at this jsfiddle - http://jsfiddle.net/Zxjrb/1/
I have added a span for validation message for ID and User ID, skipped the span for Title and Category.
<span data-bind='visible: todoListId.hasError, text: todoListId.validationMessage'> </span>
You can see the messages coming up, when Id or UserId field being empty, and that not happening for the title/category fields.
I have a basic structure as such:
<g:form>
actionSubmit
</g:form>
<g:form>
actionSubmit
</g:form>
<g:each in personList - variable=person>
<tr>
<td><g:checkBox name="personList" value="${person.id}" checked="${false}"/></td>
<td>
<g:form>
actionSubmit
</g:form>
</td>
</tr>
</g:each>
Each of these forms relies on the personList checkbox array as a variable. The prior edition of my code wrapped the entire div in a form, which worked but caused problems when I added the third form in the table.
How can I pass the selected checkboxes? I have checkbox that selects all of the boxes - I just need to assign a variable/hiddenField with that array of selected boxes.
Thanks!
Edit
The issue with having a single form is that I have a column in each row has the ability to add elements to a one to many relationship. If I could pass the person.id with the corresponding action submit (so if I hit the actionSubmit on row 2, I want to pass person.id of row 2), then this is a piece of cake.
However, whenever I tried to tie the person ID, I end up with an array of ALL person IDs. So I figured the only way around this is to have separate forms.
<td>
<div id="reportsToResultsDiv2_${person.id}" class="reportsToResultsDiv2_${person.id}">
<g:select id="reportsTo" name="reportsTo.id" from="${rtResults}" optionKey="id" value="" />
<g:actionSubmit action="addReportsTo" value="Add" params="[c_id:'${person.id}']"/>
</div>
</td>
I don't think checkbox supports both value and checked in that way.
Perhaps this is what you want?
<g:each in="${personList}" var="person>
<g:form controller="person" action="doSomething">
<g:hidden name="personId" value="${person.id}"/>
<g:checkBox name="superFly" checked="${person.superFly}"/>
</g:form>
</g:each>
Would a single form and several g:actionSubmit buttons work for you?
Generates a submit button that maps to a specific action, which lets you have multiple submit buttons in a single form. - http://grails.org/doc/latest/ref/Tags/actionSubmit.html
<g:form controller="book">
<g:checkBox name="personList" value="${person.id}"/>
<tr><td>
<g:actionSubmit action="action1" value="firstButton"/>
</td></tr>
<tr><td>
<g:actionSubmit action="action2" value="secondButton"/>
</td></tr>
</g:form>
I'm a Grails noob and running into something that seems to be a bug, but it is entirely possible I'm not configuring everything correctly.
I've got two simple Domain Classes:
class Player {
String firstName
String lastName
static constraints = {
firstName(blank:false)
lastName(blank:false)
}
String toString() { lastName + ", " + firstName }
}
and
class Team {
String mascot;
static hasMany = [players:Player]
static constraints = {
mascot(blank:false)
}
}
I have controllers for both that do nothing beyond dynamic scaffold these two Domain Classes.
But even when I have a list of Players in my DB, I don't get a multi-select box for them when creating a new Team.
However, the multi-select shows up when I go to edit a Team
Is this a bug in the dynamic scaffolding for new items, do I misunderstand how this is supposed to work, or is there something else I need to declare here?
Any help is hugely appreciated! I've got screenshots that StackOverflow won't let me add because of my newness, but I'd be happy to show them another way if that'll help.
I finally figured this out and wanted to pass on what I did just in case someone else runs into it.
When I generated the views for Team, the form block in edit.gsp looks like this:
<input type="hidden" name="id" value="${teamInstance?.id}" />
<input type="hidden" name="version" value="${teamInstance?.version}" />
<div class="dialog">
<table>
<tbody>
<tr class="prop">
<td valign="top" class="name">
<label for="mascot">Mascot:</label>
</td>
<td valign="top" class="value ${hasErrors(bean:teamInstance,field:'mascot','errors')}">
<input type="text" id="mascot" name="mascot" value="${fieldValue(bean:teamInstance,field:'mascot')}"/>
</td>
</tr>
<tr class="prop">
<td valign="top" class="name">
<label for="players">Players:</label>
</td>
<td valign="top" class="value ${hasErrors(bean:teamInstance,field:'players','errors')}">
<g:select name="players"
from="${Player.list()}"
size="5" multiple="yes" optionKey="id"
value="${teamInstance?.players}" />
</td>
</tr>
</tbody>
</table>
</div>
<div class="buttons">
<span class="button"><g:actionSubmit class="save" value="Update" /></span>
<span class="button"><g:actionSubmit class="delete" onclick="return confirm('Are you sure?');" value="Delete" /></span>
</div>
</g:form>
but the form block in create.gsp looks like this:
<g:form action="save" method="post" >
<div class="dialog">
<table>
<tbody>
<tr class="prop">
<td valign="top" class="name">
<label for="mascot">Mascot:</label>
</td>
<td valign="top" class="value ${hasErrors(bean:teamInstance,field:'mascot','errors')}">
<input type="text" id="mascot" name="mascot" value="${fieldValue(bean:teamInstance,field:'mascot')}"/>
</td>
</tr>
</tbody>
</table>
</div>
<div class="buttons">
<span class="button"><input class="save" type="submit" value="Create" /></span>
</div>
</g:form>
In other words, for this corner case, the default Create view omits the widget to properly display the multi-select list. When I did a copy and paste of the missing code, the dynamically scaffolded controller picked it up and persisted it as expected. So, it's definitely a bug in the view generation code.
Yes, the default scaffolding puts a parent selector in the child class' create/edit page.
I'm guessing it was just easier for them this way. It shouldn't be a multi-select though, just a pull-down single-select, as it's a One-to-Many.
As you've explained you wanted more of a Many-to-Many relationship, you might try adding:
static hasMany = [teams:Team]
to your Player class. I've found that Grails does better with bi-directional relationships. It's also useful to have when building search queries, and shouldn't require more than the one relationship table you'd already need.
If you're using Grails pre-v1.1, Many-to-Many relationships aren't directly supported, so even adding the static hasMany above won't be the complete solution, as you'll need to manage adding to the other list when you add to one direction. I haven't used v1.1 yet, so I can't talk about what is needed to specify the Many-to-Many in it.
I encountered the same problem using current version (v1.3.4) of Grails. Had to manually modify the create.gsp