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jquery.datePicker example: linked datePickers with start and end
dates
< date picker homeThe following example displays how you can
synchronise two date pickers together. A common scenario for an
online date picker is when booking flights or something where you
need to input outbound and inbound dates. The start date must be
before the end date and vice versa. We can enforce this rule with a
very simple little bit of script.
Top of Form
Test date picker form
1. Start date:
HYPERLINK
"http://www.kelvinluck.com/assets/jquery/datePicker/v2/demo/datePickerStartEnd.html"
\o "Choose date" Choose date
2. End date:
HYPERLINK
"http://www.kelvinluck.com/assets/jquery/datePicker/v2/demo/datePickerStartEnd.html"
\o "Choose date" Choose date
3. Test select: Bottom of Form
Page sourcecode
$(function()
{
$('.date-pick').datePicker()
$('#start-date').bind(
'dpClosed',
function(e, selectedDates)
{
var d = selectedDates[0];
if (d) {
d = new Date(d);
$('#end-date').dpSetStartDate(d.addDays(1).asString());
}
}
);
$('#end-date').bind(
'dpClosed',
function(e, selectedDates)
{
var d = selectedDates[0];
if (d) {
d = new Date(d);
$('#start-date').dpSetEndDate(d.addDays(-1).asString());
}
}
);
});
Page CSS
/* located in demo.css and creates a little calendar icon
* instead of a text link for "Choose date"
*/
a.dp-choose-date {
float: left;
width: 16px;
height: 16px;
padding: 0;
margin: 5px 3px 0;
display: block;
text-indent: -2000px;
overflow: hidden;
background: url(calendar.png) no-repeat;
}
a.dp-choose-date.dp-disabled {
background-position: 0 -20px;
cursor: default;
}
/* makes the input field shorter once the date picker code
* has run (to allow space for the calendar icon
*/
input.dp-applied {
width: 140px;
float: left;
Adding records to the database with ASPby Faisal Khan.
OverviewNo matter what kind of site you have got, you will need
your ASP pages to access databases. ASP makes it easier to work
with databases by providing support for ADO ( Activex Data Objects
). You already know how to build DSN ( Data Source Name ) and then
access database, if you don't then you might want to check out my
tutorial on Accessing Databases via ASP.In this article I will
build on that tutorial to show you how to add records to the
database. We will begin by exploring the insert statement provided
by SQL ( Structured Query Language ). After that we will see the
two basic ways we can use to add records to the database.
I will assume here that you have read the Accessing Databases
via ASP tutorial and are comfortable creating DSNs and simple
Access Databases. I will also assume that you have got access to
Microsoft Access Database, PWS / IIS with a notepad to write ASP
pages.
SQL Insert StatementSQL is the standard language to deal with
databases World wide. It provides us with select, insert, delete
and update statements to show, add, delete and update the records
in the database respectively. We will only study the insert
statement since we are only dealing with adding records to the
database here. It will be very helpful to us when we are adding
records, as we'll see later.
Syntaxinsert into table_name (field1, field2, field3)
values ('value1', 'value2', 'value3';
The insert statement as you have seen above is very simple to
understand. It takes three arguments; table, fields and values.
table_name is the name of the table in the database into which you
want to add records. fieldn are the names of the columns in that
table into which you want to add records. valuen are the values
which will be inserted into specific fields. Note field names and
values can be one or more than one but the table name will always
be one.
Exampleinsert into books (author, title) values
('Faisal Khan', 'Add Records';
When run the above query results in the insertion into two
fields of table books, author and title values Faisal Khan and Add
Records.
Table Name = books
Fields
Values
author
Faisal Khan
title
Add Records
Now after you are familiar with the insert statement and have
seen how it works, it is time to move forward to see the two ways
by which we can easily add records to our database via ASP.We
manipulate databases in ASP through ADO ( Activex Data Objects ).
ADO is a set of pre made data components which makes things a lot
easier for us when it comes to accessing data stores. Wondering why
did I say data stores and not databases ? well, database is only
one of the data stores and ADO can help us access more than that
e.g. XML. We'll not go into what ADO can do for us, instead we'll
restrain ourselves to the discussion of adding records to database
via ASP.
There are two ways to add records to the database. We'll discuss
each of them now.
Via Connection ObjectIt is the easiest and fastest way to add
records to the database. Here is how we add records with Connection
Object :
The above results in the creation of Connection Object which
opens the database and inserts the records into specific fields of
the table according to the SQL insert statement. See, didn't I say
before it was going to be easy.
Via Recordset ObjectRecordset is another very useful Object
which allows us to select, add, update and delete records without
using SQL statements. Here is how we add records with Recordset
Object.
This code will execute as soon as the page loads, which can be
useful on occasion, but we usually only want to perfom record
modifications as the result of a form being submitted. To do this
simply put the command within a condition, for example:
You can also set up multiple commands on a single page in order
to insert, update or delete records in different tables in one
instance, for example:
You can also use the commands in conjunction with the retrieve
inserted record identity code in order to insert the new identity
into a second table, which is useful if you need to maintain a
relationship between two or more tables, for example:
Updating Multiple Records using SQL Update and the Where/In
Clause with Checkboxes
There may be instances where one wants to update a field value
for a large, select group of records. Doing this one record at a
time is a killer on productivity. However, using checkboxes and a
drop-down list, one can select a large group of records and then
define a DMX Command to update the records in one fell swoop. This
builds upon an article written by Marcellino Bommezijn concerning
the deletion of multiple records and uses the SQL WHERE IN clause
that he used in that tutorial.
Assumptions:
1. The person using this tutorial is familiar with databases and
connection strings/DSNs. These will not be covered in this
tutorial. I assume that one can setup or already has setup these
conventions to follow the tutorial.
2. This tutorial references Microsoft Access as the database of
choice for this tutorial, however, this example can be done in
MySQL or SQL databases. I assume one has the knowledge to setup the
databases as necessary for whatever server application is being
used.
3. The person using this tutorial is familiar with
Dreamweaver.
Step 1: Building the Form
In the following example, I will assign students to classroom
groups. I will use checkboxes to assign students to a selected
classroom group. I am using a simple Microsoft Access database
designed like the following:
Setup a table named students with the following field names,
types:
student_id, Autonumber - Primary Key
student_name, text
assigned_group, text
Start by saving a new ASP file as frm_assign_group_students.asp.
Create a recordset named rs_students that pulls all records from
the student table.
SELECT *FROM students
On our form, we will use a list menu to choose which group we
are assigning. In this example, we simply add values to the list,
though this could also be populated by another recordset using
Dyanmic assignments in DMX. We will also setup a repeating region
for all records in rs_students. The method of submission will be
GET.
The list menu is a simple select tag that looks like this:
MathematiciansWritersScientists
The checkbox on the form will be named "update_group" and we
will assign the student_id as a unique value from the recordset.
This will look like the following in the HTML code:
The following shows the attributes: Save this file.Step 2:
Designing the Update Process
To create the update page, we are going to setup a SQL command
using the Command option under the Server Behaviors. Save this file
as proc_student_group_update.asp before going any further.
With the Command dialogue box open, we will define the
following.
1. The name of the Command will be update_group_assignment
2. From the Connection list, either define your connection or
select a pre-defined connection name, in my case cnnUtility.
3. Select the Type Update
4. The table we are updating is students
5. We are setting the field named assigned_group the value of
group_option from the form. Since we are using a GET method, we
assign the run-time value for variable param_group by using
Request.QueryString("group_option"). Since this is a string of
text, we need to put param_group variable inside single quotes for
the SQL statement.
6. We are updating all records that have been checked in
update_group from the form. Because we used the same name on the
form for the checkbox, the values will be stored as a
comma-delimited list. We assign the run-time value for variable
param_students by using Request.QueryString("update_group"). Since
we are using IN as part of the WHERE clause, the SQL Update will
make changes to all records with a matching student_id value in the
recordset. As the student_id values are integers, they do not need
to be placed in single quotes.
7. Finally, a little clean up is needed. Just below the section
where DMX writes the COMMAND code, add the following to ensure the
release of the update_group_assignment command variable:
Step 3: Finishing Up
1. In the Head section place a Refresh tag that redirects to the
first form, like so:
2. In the of the HTML, type a message like "Updating
Students..."
3. Save this file.
4. We are finished.
Updating Multiple Records using SQL Update and the Where/In
Clause with Checkboxes
< !-- Include Files for the pre-header excluding JavaScript
and CSS -->< !--#include
file="../../Connections/cnn_Utility.asp" -->< !-- Macromedia
VB Script and ASP not in the body -->< %
if(Request.QueryString("group_option") "") then
update_group_assignment__param_group =
Request.QueryString("group_option")
if(Request.QueryString("update_group") "") then
update_group_assignment__param_students =
Request.QueryString("update_group")
%>< %
set update_group_assignment =
Server.CreateObject("ADODB.Command")update_group_assignment.ActiveConnection
= MM_cnn_Utility_STRINGupdate_group_assignment.CommandText =
"UPDATE students SET assigned_group = '" +
Replace(update_group_assignment__param_group, "'", "''") + "' WHERE
student_id IN (" + Replace(update_group_assignment__param_students,
"'", "''") + ") "update_group_assignment.CommandType =
1update_group_assignment.CommandTimeout =
0update_group_assignment.Prepared =
trueupdate_group_assignment.Execute()%>< !-- Nexsys Design VB
Script and ASP not in the body -->< %SET
update_group_assignment = nothing%>< html><
head>< title>Developed by Nexsys Design< !-- Meta Tags
Section in the Head-->< meta name="author"
content="[email protected]">< meta name="copyright"
content="Copyright 1998 - 2003, Nexsys Design, Inc.">< meta
http-equiv="Content-Type" content="text/html;
charset=iso-8859-1">< meta http-equiv="refresh"
content="5;URL=frm_assign_group_students.asp">
< !-- Nexsys Design JavaScript in the Head -->< !-- CSS
Links or Style Definitions in the Head -->< script
language="JavaScript" type="text/JavaScript">< !--function
MM_displayStatusMsg(msgStr) {
//v1.0status=msgStr;document.MM_returnValue = true;}//--><
/script>< link href="../../nexsysV2.css" rel="stylesheet"
type="text/css">< /head>
< div align="center">
Updating students...
< /div>< /body>< /html>Using a Stored
Procedure with a SQL Server database or creating your own custom
INSERT command with an Access database it's fairly simple to
retrieve the identity of the newly created record, something which
is often useful with a record insert. For more information about
retrieving record identities with Access and SQL Server see my
site: http://www.drdev.net/1. Create your form, including a File
Field to browse to the file you wish to upload.2. Now add the Pure
ASP Upload server behaviour as you would normally, selecting the
options you require. Don't specify a redirect URL, you can add that
after your insert command code if required.3. Now create your
insert command as you wish, but instead of using
Request.Form("formElementName") to collect the values from the form
elements, as you would usually, use
CStr(UploadFormRequest("formElementName ")).For example, you might
normally collect the form elements into variables like
this:strFileName = Request.Form("fileUpload")strTitle =
Request.Form("txtTitle")strDescription =
Request.Form("txtDescription")
With the Pure ASP Upload behaviour, modify the collection of the
values from the form as follows:strFileName =
CStr(UploadFormRequest("fileUpload"))strTitle =
CStr(UploadFormRequest("txtTitle"))strDescription =
CStr(UploadFormRequest("txtDescription"))That's it, you can now use
the values in the variables with your own insert command whether it
uses a Stored Procedure or it is simply your preferred method of
inserting a record in an Access or SQL Server database.
Here's an example insert command for an Access database which
retrieves the identity of the newly created record and redirects
the user to a new page. Notice I've used the Replace single quotes
with two single quotes in this example to stop the INSERT command
fowling up if they were included in the string values entered in
the form:If CStr(UploadFormRequest("Submit")) = "Upload File"
ThenstrFileName =
Replace(CStr(UploadFormRequest("fileUpload")),"'", "''")strTitle =
Replace(CStr(UploadFormRequest("txtTitle")) ,"'",
"''")strDescription =
Replace(CStr(UploadFormRequest("txtDescription")) ,"'", "''")Set
commInsert = Server.CreateObject("ADODB.Connection")commInsert.Open
MM_YourConn_STRINGcommInsert.Execute("INSERT INTO
tblFiles(strFileName, strTitle, strDescription) VALUES('" &
strFileName & "', '" & strTitle & "', '" &
strDescription & "');") ' Execute the insert commandSet rsNewID
= commInsert.Execute("SELECT @@IDENTITY") ' Create a recordset and
SELECT the new IdentityintNewID = rsNewID(0) ' Store the value of
the new identity in variable intNewIDrsNewID.CloseSet rsNewID =
NothingcommInsert.CloseSet commInsert = Nothing
Response.Redirect("FileDetail.asp?NewID=" & intNewID)End
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