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| 1 | +--- |
| 2 | +title: Prevent invalid start/end date values in the Scheduler popup editor. |
| 3 | +description: An example on how to prevent the user from entering invalid start/end date values in the Kendo jQuery Scheduler popup editor. |
| 4 | +type: how-to |
| 5 | +page_title: Prevent invalid start/end date values in the Scheduler popup editor | Kendo UI Scheduler for jQuery |
| 6 | +slug: scheduler-start-end-invalid-input |
| 7 | +tags: scheduler, start, end, inputs, readonly, datepickers |
| 8 | +res_type: kb |
| 9 | +component: scheduler |
| 10 | +--- |
| 11 | + |
| 12 | +## Environment |
| 13 | + |
| 14 | +<table> |
| 15 | + <tr> |
| 16 | + <td>Product</td> |
| 17 | + <td>Progress Kendo UI Scheduler</td> |
| 18 | + </tr> |
| 19 | + <tr> |
| 20 | + <td>Kendo UI for jQuery</td> |
| 21 | + <td>2021.2.511</td> |
| 22 | + </tr> |
| 23 | +</table> |
| 24 | + |
| 25 | +## Description |
| 26 | + |
| 27 | +How can I prevent invalid start/end date values in the Scheduler popup editor, like typing irrelevant text in the inputs? |
| 28 | + |
| 29 | +## Solution #1 |
| 30 | + |
| 31 | +Handle the [edit event](api/javascript/ui/scheduler/events/edit) and add "readonly" property to the start and end inputs. |
| 32 | + |
| 33 | +```dojo |
| 34 | + <div id="example"> |
| 35 | + <div id="scheduler"></div> |
| 36 | + </div> |
| 37 | + <script> |
| 38 | + $(function() { |
| 39 | + function scheduler_edit(e) { |
| 40 | + // Make Start and End DateTimePickers INPUTS readonly, allowing date selection only through dropdowns |
| 41 | + |
| 42 | + $("[name='start']").prop("readonly", true); |
| 43 | + $("[name='end']").prop("readonly", true); |
| 44 | + } |
| 45 | +
|
| 46 | + $("#scheduler").kendoScheduler({ |
| 47 | + date: new Date("2013/6/13"), |
| 48 | + startTime: new Date("2013/6/13 7:00"), |
| 49 | + height: 400, |
| 50 | + timezone: "Etc/UTC", |
| 51 | + views: [ |
| 52 | + "day", |
| 53 | + { type: "week", selected: true }, |
| 54 | + "month", |
| 55 | + "agenda", |
| 56 | + "timeline" |
| 57 | + ], |
| 58 | + selectable: true, |
| 59 | + edit: scheduler_edit, |
| 60 | + dataSource: { |
| 61 | + batch: true, |
| 62 | + transport: { |
| 63 | + read: { |
| 64 | + url: "https://demos.telerik.com/kendo-ui/service/tasks", |
| 65 | + dataType: "jsonp" |
| 66 | + }, |
| 67 | + update: { |
| 68 | + url: "https://demos.telerik.com/kendo-ui/service/tasks/update", |
| 69 | + dataType: "jsonp" |
| 70 | + }, |
| 71 | + create: { |
| 72 | + url: "https://demos.telerik.com/kendo-ui/service/tasks/create", |
| 73 | + dataType: "jsonp" |
| 74 | + }, |
| 75 | + destroy: { |
| 76 | + url: "https://demos.telerik.com/kendo-ui/service/tasks/destroy", |
| 77 | + dataType: "jsonp" |
| 78 | + }, |
| 79 | + parameterMap: function(options, operation) { |
| 80 | + if (operation !== "read" && options.models) { |
| 81 | + return {models: kendo.stringify(options.models)}; |
| 82 | + } |
| 83 | + } |
| 84 | + }, |
| 85 | + schema: { |
| 86 | + model: { |
| 87 | + id: "taskID", |
| 88 | + fields: { |
| 89 | + taskID: { from: "TaskID", type: "number" }, |
| 90 | + title: { from: "Title", defaultValue: "No title", validation: { required: true } }, |
| 91 | + start: { type: "date", from: "Start" }, |
| 92 | + end: { type: "date", from: "End" }, |
| 93 | + startTimezone: { from: "StartTimezone" }, |
| 94 | + endTimezone: { from: "EndTimezone" }, |
| 95 | + description: { from: "Description" }, |
| 96 | + recurrenceId: { from: "RecurrenceID" }, |
| 97 | + recurrenceRule: { from: "RecurrenceRule" }, |
| 98 | + recurrenceException: { from: "RecurrenceException" }, |
| 99 | + ownerId: { from: "OwnerID", defaultValue: 1 }, |
| 100 | + isAllDay: { type: "boolean", from: "IsAllDay" } |
| 101 | + } |
| 102 | + } |
| 103 | + } |
| 104 | + } |
| 105 | + }); |
| 106 | + }); |
| 107 | +</script> |
| 108 | +``` |
| 109 | + |
| 110 | +## Solution #2 |
| 111 | + |
| 112 | +Handle the edit event and force the Start/End DatePickers to reject invalid dates format and preserve the last valid date entered |
| 113 | + |
| 114 | +```dojo |
| 115 | + <div id="example"> |
| 116 | + <div id="scheduler"></div> |
| 117 | + </div> |
| 118 | + <script> |
| 119 | + $(function() { |
| 120 | +
|
| 121 | + function eventEdit() { |
| 122 | + var startPicker = $("[data-container-for=start] input[name=start]").data("kendoDateTimePicker"); |
| 123 | + var startValue = startPicker.value(); |
| 124 | +
|
| 125 | + startPicker.setOptions({ |
| 126 | + change: function(e) { |
| 127 | + var date = startPicker.value(); |
| 128 | + if (!date) { |
| 129 | + startPicker.value(startValue); |
| 130 | + } |
| 131 | + } |
| 132 | + }) |
| 133 | +
|
| 134 | + var endPicker = $("[data-container-for=end] input[name=end]").data("kendoDateTimePicker"); |
| 135 | + var endValue = endPicker.value(); |
| 136 | +
|
| 137 | + endPicker.setOptions({ |
| 138 | + change: function(e) { |
| 139 | + var date = endPicker.value(); |
| 140 | + if (!date) { |
| 141 | + endPicker.value(endValue); |
| 142 | + } |
| 143 | + } |
| 144 | + }) |
| 145 | +
|
| 146 | + } |
| 147 | +
|
| 148 | + $("#scheduler").kendoScheduler({ |
| 149 | + date: new Date("2013/6/13"), |
| 150 | + startTime: new Date("2013/6/13 7:00"), |
| 151 | + height: 400, |
| 152 | + timezone: "Etc/UTC", |
| 153 | + edit: eventEdit, |
| 154 | + views: [ |
| 155 | + "day", |
| 156 | + { type: "week", selected: true }, |
| 157 | + "month", |
| 158 | + "agenda", |
| 159 | + "timeline" |
| 160 | + ], |
| 161 | + selectable: true, |
| 162 | + change: function (e) { |
| 163 | + console.log('change', e) |
| 164 | + }, |
| 165 | + dataSource: { |
| 166 | + batch: true, |
| 167 | + transport: { |
| 168 | + read: { |
| 169 | + url: "https://demos.telerik.com/kendo-ui/service/tasks", |
| 170 | + dataType: "jsonp" |
| 171 | + }, |
| 172 | + update: { |
| 173 | + url: "https://demos.telerik.com/kendo-ui/service/tasks/update", |
| 174 | + dataType: "jsonp" |
| 175 | + }, |
| 176 | + create: { |
| 177 | + url: "https://demos.telerik.com/kendo-ui/service/tasks/create", |
| 178 | + dataType: "jsonp" |
| 179 | + }, |
| 180 | + destroy: { |
| 181 | + url: "https://demos.telerik.com/kendo-ui/service/tasks/destroy", |
| 182 | + dataType: "jsonp" |
| 183 | + }, |
| 184 | + parameterMap: function (options, operation) { |
| 185 | + if (operation !== "read" && options.models) { |
| 186 | + return { models: kendo.stringify(options.models) }; |
| 187 | + } |
| 188 | + } |
| 189 | + }, |
| 190 | + schema: { |
| 191 | + model: { |
| 192 | + id: "taskID", |
| 193 | + fields: { |
| 194 | + taskID: { from: "TaskID", type: "number" }, |
| 195 | + title: { from: "Title", defaultValue: "No title", validation: { required: true } }, |
| 196 | + start: { type: "date", from: "Start" }, |
| 197 | + end: { type: "date", from: "End" }, |
| 198 | + startTimezone: { from: "StartTimezone" }, |
| 199 | + endTimezone: { from: "EndTimezone" }, |
| 200 | + description: { from: "Description" }, |
| 201 | + recurrenceId: { from: "RecurrenceID" }, |
| 202 | + recurrenceRule: { from: "RecurrenceRule" }, |
| 203 | + recurrenceException: { from: "RecurrenceException" }, |
| 204 | + ownerId: { from: "OwnerID", defaultValue: 1 }, |
| 205 | + isAllDay: { type: "boolean", from: "IsAllDay" } |
| 206 | + } |
| 207 | + } |
| 208 | + } |
| 209 | + } |
| 210 | + }); |
| 211 | + }); |
| 212 | + </script> |
| 213 | +``` |
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