Several times we need to display Auto Number or serial number for displaying records in gridview or other similar controls in ASp.NET.We can add AutoNumber column by using Container.DataItemIndex property in html markup of the Gridview.
We can add AutoNumber column by using Container.DataItemIndex property in html markup of the Gridview.
Here's the sample html markup for the page
</head>
<body>
<form id="form1" runat="server">
<asp:GridView ID="GridView1" runat="server"
AllowPaging="True" AutoGenerateColumns="False"
DataSourceID="SqlDataSource1" PageSize="6"
AlternatingRowStyle-BackColor="#006699"
AlternatingRowStyle-ForeColor="#FFFFFF" >
<Columns>
<asp:TemplateField HeaderText="Serial Number">
<ItemTemplate>
<%# Container.DataItemIndex + 1 %>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="Name" HeaderText="Name"
SortExpression="Name" />
<asp:BoundField DataField="Location" HeaderText="Location"
SortExpression="Location" />
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="SELECT [Name], [Location] FROM [Details]">
</asp:SqlDataSource>Hope this helps.
Ajax form validation in Confluence plugin using a JSON request
Today I describe how to make Ajax requests to XWork actions inside a Confluence plugin. A good example is server-side form validation. User fills a form, clicks Submit, then we validate the form in background and if there are no errors we allow submitting the form, otherwise show field errors.
Suppose we have a simple user info form with input fields like name, department, email etc:
#tag( TextField "name='user.name'" "size='50'" )
#tag( Select "name='user.department'"
"list=departmentsDao.all"
"listKey=name" "listValue=name"
"emptyOption='true'" )
#tag( TextField "name='user.email'" "size='50'" )
...
#tag( Submit "id=userformsubmit"
"name='save'" "value='dot.button.save'" )
#tag( Submit "name='cancel'" "value='dot.button.cancel'" )
</form>One way to make form validation is to write it in javascript, but what if you already have it implemented in action? Write everything again? Maybe it's better to use existing server side code so you can switch on/off Ajax at any time and you'll not have the same logic implemented twice.
Here are the required steps:
edit atlassian-plugin.xml and create a package for you application with validation enabled, declare an action doUpdate for submitting a form and editValidate for Ajax validation.
namespace="/dot/users">
<default-interceptor-ref name="validatingStack"/>
...
<action name="doUpdate"
class="dot.userinfo.users.action.EditUserInfo"
method="save">
<external-ref name="dotUsersDao">
usersDao</external-ref>
<external-ref name="dotDepartmentsDao">
departmentsDao</external-ref>
<external-ref name="dotCitiesDao">
citiesDao</external-ref>
<result name="input" type="velocity">
/templates/dot/userinfo/users/edituser.vm</result>
<result name="success" type="redirect">
/dot/users/usercard.action?id=${user.id}</result>
<result name="cancel" type="redirect">
/dot/users/observe.action</result>
</action>
...
<action name="editValidate"
class="dot.userinfo.users.action.EditUserInfo">
<result name="input" type="json" />
<result name="success" type="json" />
</action>
...
</package>Action editValidate will be called in Ajax from javascript. In my experience, both input and success return types are required. input is returned in case of any field errors, success when everything is ok. Actually there is no need to return success to javascript, but instead I could save the form and redirect to another form. I'll try this in next post.
extends ConfluenceActionSupport
implements JSONAction {
...
public String getJSONString() {
try {
if (hasFieldErrors()) {
StringBuffer sb = new StringBuffer();
sb.append("[");
Map fieldErrors = getFieldErrors();
for (Object field : fieldErrors.keySet()) {
List<Object> msg =
(List<Object>) fieldErrors.get(field);
if (field != null && msg != null
&& msg.get(0) != null) {
sb.append("{field:'"+field+"',
error:'"+msg.get(0)+"'},");
}
}
if (sb.length() > 1) {
sb.deleteCharAt(sb.length()-1);
}
sb.append("]");
return sb.toString();
}
} catch (Exception e) {
// handle exception
}
return "";
}
}By the time getJSONString() method is called validation was already done by WebWork so we can immediatelly process the errors. Here I generate a Javascript array of all field errors which I want to show next to input fieds. Write EditUserInfo-validation.xml file in the same package as java class. My validation file looks something like this
Main stuff is done, last thing we need is to call validation from Javascript and show error messages.
<field name="user.name">
<field-validator type="requiredstring">
<message key="dot.field.error.required" />
</field-validator>
</field>
<field name="user.department">
<field-validator type="requiredstring">
<message key="dot.field.error.required" />
</field-validator>
</field>
<field name="user.email">
<field-validator type="requiredstring">
<message key="dot.field.error.required" />
</field-validator>
<field-validator type="email">
<message key="dot.field.error.email" />
</field-validator>
</field>
</validators>
- attach click event to submit button
try {
var form = $("#saveform");
validateForm(form);
} catch (e) { alert(e); }
return false; // always!
});
- My validateForm looks like this
function validateForm(form) {
$.ajax({url: "editValidate.action",
data: form.serialize(),
success: function(data) { try {
var fields = $("#saveform span.fielderror");
// delete old errors,
// error spans are found by class name
fields.html("");
// set received errors, iterate through span IDs
data = eval(data);
if (data && data.length > 0) {
for (i in data) {
var id = data[i].field.replace(/\./, "\\.")+
"-error";
var fe = $("#"+id);
if (fe) { fe.html(data[i].error); }
}
return false;
}
$("#saveform").submit();
return true;
} catch (e) { alert(e); } }
});
return false;
}Here for every input control I have span with id ending with '-error' and class 'fielderror'. I still haven't tried to write macros so I implemented a separate file fielderror.vm
which I include in main page next to input fields. Example for user name field:
class="fielderror">
#set( $err = $fieldErrors.get($f) )
#if( $err.size() > 0 )
$err.get(0)
#end
</span>
#parse( "/templates/dot/userinfo/fielderror.vm" )Next week I'll try to optimize the code. In current implementation I believe validation is called twice: 1st time in ajax, and 2nd time when form is submitted (this we can escape), for field errors I need macro..
JScript IntelliSense: Working with jQuery
JScript IntelliSense: Working with jQuery
We have good news for jQuery fans. The hotfix we released today fixes a bug in IntelliSense where it would fail with jQuery. Any page with jQuery should just work now. While experimenting with this new-found functionality today, I found annotating the library with a few XML Doc Comments really made a big difference. The key is to add a return type of "jQuery" like this:
Here's some jQuery chaining with IntelliSense:
There were only a few functions that (due to the way they were declared) were not able to be annotated. Special thanks to Brennan where I borrowed the comments from. If anyone will be making a fully annotated version of jQuery, I'd be happy to post a link to it from here.
