Date Picker Template Include

Author:: brandonh
Posted:: November 18, 2008
Language:: HTML/template
Version:: Not specified
Score:: 0 (after 0 ratings)
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All you need to do is include the file you save this as in your other templates. The css and javascript is right in the file. Fully customizable. Very easy.
Click a date to choose a single date. Click a second date to choose a range. A third click will act as a first click.
note: you also will want to customize the django template specific variables in elements with ids: s_date e_date cal_month
if you change those, it's not even really django specific, but i use this in my form for time off requests at work.
<style type='text/css'>
    #cal_contain {
        display:block;
        width:100%;
    }
    #cal_dates,#cal_grid,#cal_inst {
        float:left;
        margin-left:4px;
        margin-right:6px;
        /*border:1px solid black;*/
    }
    #cal_grid{
    }
    #cal_dates,#cal_inst{
        margin-top:50px;
        width:25%;
    }
    #cal_inst p {
        margin:0;
    }
    #cal_table{
        text-align:center;
    }
    .c_row td div.clickable {
        cursor:pointer;
        display:block;
        width:100%;
        height:100%;
    }
    .cal_link{
        cursor:pointer;
    }
    .selected{
        background-color:#000;
        color:#eee;
    }
</style>

<script language="javascript">
    function getcurrentdates(){
        var s = document.getElementById('s_date');
        var e = document.getElementById('e_date');
        var s_d = s.value.split("/");
        var e_d = e.value.split("/");
        var d = new Array();
        d['s_mon'] = s_d[0] - 1;
        d['s_day'] = s_d[1];
        d['s_year'] = s_d[2];
        d['e_mon'] = e_d[0] - 1;
        d['e_day'] = e_d[1];
        d['e_year'] = e_d[2];
        return d;
    }
    var init = 1;
    function changedates(month,day,year){
        var d = getcurrentdates();
        var clicked_date = new Date();
        var s_date = new Date();
        var e_date = new Date();
        var s = document.getElementById('s_date');
        var e = document.getElementById('e_date');
        clicked_date.setFullYear(year,month,day);
        s_date.setFullYear(d['s_year'],d['s_mon'],d['s_day']);
        e_date.setFullYear(d['e_year'],d['e_mon'],d['e_day']);
        
        var newmonth = clicked_date.getMonth() + 1;
        var newyear = clicked_date.getFullYear();
        var newday = clicked_date.getDate();
        
        if (init % 2 == 1){
            s.value = newmonth + '/' + newday + '/' + newyear;
            e.value = newmonth + '/' + newday + '/' + newyear;
            createcal(newmonth-1,newyear);
        }
        else{
            //check if dates are the same. if they are, compare to the clicked date. if not, change the start/end date depending on where the click was
            //click before changes start date, click after changes end date. if they are already different, clicked_date is set to both s and e
            if(s_date > clicked_date){
                s.value = newmonth + '/' + newday + '/' + newyear;
                createcal(newmonth-1,newyear);
            }
            else if(e_date < clicked_date){
                e.value = newmonth + '/' + newday + '/' + newyear;
                createcal(newmonth-1,newyear);
            }
            else{//it equals both
                return;
            }
        }
        init++;
    }
    function updatecal(dir,m,y){
        var year = y;
        var newmonth = m;
        switch(dir){
            case 1:
                if(m == 11){
                    newmonth = 0;
                    year++;
                }
                else{
                    newmonth++;
                }
                break;

            default:
                if(m == 0){
                    newmonth = 11;
                    year--;
                }
                else{
                    newmonth--;
                }
                break;
        }
        createcal(newmonth,year);
    }
    function createcal(month,year,today){
        //get current set dates
        var d = getcurrentdates();
        var s_date = new Date();
        var e_date = new Date();
        s_date.setTime(0);
        e_date.setTime(0);
        s_date.setFullYear(d['s_year'],d['s_mon'],d['s_day']);
        e_date.setFullYear(d['e_year'],d['e_mon'],d['e_day']);
        //clear cal
        for(i=1;i<42;i++){
            var box = document.getElementById('c'+i);
            box.innerHTML = '';
            box.onclick = '';
            box.className = '';
        }
        var firstday = getfirst(month,year);
        var numdays = getnumdays(month,year);
        var months = new Array('Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec');
        document.getElementById('cal_month').innerHTML = "<span title='previous month' class='cal_link' onclick='updatecal(-1,"+month+","+year+");'>&lt;</span> " + months[month] + " " + year + " <span title='next month' class='cal_link' onclick='updatecal(1,"+month+","+year+");'>&gt;</span>";
        var f = 0;
        var date_test = new Date();
        date_test.setTime(0);
        for (i=firstday;i<42;i++){
            if(f<=numdays){
                f++;
                box = document.getElementById('c'+i);
                box.innerHTML = "<div class='clickable' onclick='changedates("+month+","+f+","+year+");'>"+f+"</div>";
                /*box.onclick = function() {
                    changedates(month,f,year);
                }*/
                date_test.setFullYear(year,month,f);
                if(e_date >= date_test && date_test >= s_date){
                    box.className = 'selected';
                }
            }
        }
    }
    function getfirst(month,year){
        var firstday = new Date();
        firstday.setFullYear(year);
        firstday.setMonth(month);
        firstday.setDate(1);
        return firstday.getDay() + 1; //returns 1 for sun - 7 for sat (after the plus 1
    }
    function getnumdays(month,year){
        var day = new Date();
        day.setFullYear(year);
        day.setMonth(month+1);
        day.setDate(-1);
        return day.getDate();
    }
    function c(){
        var today = new Date();
        var month = today.getMonth(); //remember months are 0-11
        var year = today.getFullYear();
        var date = today.getDate();
        createcal(month,year,date);
    }
</script>

<div id="cal_contain">
    <div id='cal_dates'>
        From: <input disabled size='10' type='text' name='s_date' id='s_date' value='{% if object %}{{ object.start_date|date:"n/j/Y" }}{% else %}{% now "n/j/Y" %}{% endif %}' /><br />
        To: &nbsp; &nbsp; <input disabled size='10' type='text' name='e_date' id='e_date' value='{% if object %}{{ object.end_date|date:"n/j/Y" }}{% else %}{% now "n/j/Y" %}{% endif %}' />
    </div>
    <div id='cal_grid'>
        <table id='cal_table'>
            <tr id='cal_nav'>
               <td colspan='7' id='cal_month'>&lt; {% now "M Y" %} &gt;</td>
            </tr>
            <tr id='cal_head'>
                <td>Sun</td>
                <td>Mon</td>
                <td>Tue</td>
                <td>Wed</td>
                <td>Thu</td>
                <td>Fri</td>
                <td>Sat</td>
            </tr>
            <tr id='cal_row1' class='c_row'>
                <td id='c1'></td>
                <td id='c2'></td>
                <td id='c3'></td>
                <td id='c4'></td>
                <td id='c5'></td>
                <td id='c6'></td>
                <td id='c7'></td>
            </tr>
            <tr id='cal_row2' class='c_row'>
                <td id='c8'></td>
                <td id='c9'></td>
                <td id='c10'></td>
                <td id='c11'></td>
                <td id='c12'></td>
                <td id='c13'></td>
                <td id='c14'></td>
            </tr>
            <tr id='cal_row3' class='c_row'>
                <td id='c15'></td>
                <td id='c16'></td>
                <td id='c17'></td>
                <td id='c18'></td>
                <td id='c19'></td>
                <td id='c20'></td>
                <td id='c21'></td>
            </tr>
            <tr id='cal_row4' class='c_row'>
                <td id='c22'></td>
                <td id='c23'></td>
                <td id='c24'></td>
                <td id='c25'></td>
                <td id='c26'></td>
                <td id='c27'></td>
                <td id='c28'></td>
            </tr>
            <tr id='cal_row5' class='c_row'>
                <td id='c29'></td>
                <td id='c30'></td>
                <td id='c31'></td>
                <td id='c32'></td>
                <td id='c33'></td>
                <td id='c34'></td>
                <td id='c35'></td>
            </tr>
            <tr id='cal_row6' class='c_row'>
                <td id='c36'></td>
                <td id='c37'></td>
                <td id='c38'></td>
                <td id='c39'></td>
                <td id='c40'></td>
                <td id='c41'></td>
                <td id='c42'></td>
            </tr>
        </table>
    </div>
    <div id='cal_inst'>
        <p>Click a date to choose a single date.
        Click a second date to choose a range.
        A third click will act as a first click.</p>
    </div>
</div>
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