jqgrid validation when editing a record - jqgrid

Question

I have now a problem with validation of a record that is being edited.
The edit form (and the add form) has a field called "email". That field should be unique in database, so I use ajax to validate it, by mean of this function:
function check_email(value, colname) {
$.ajax({
url: '#Url.Action("CheckEmail")',
data: { email: value },
type: 'POST',
async: false,
datatype: 'text',
success: function (data) {
if (!data) result = [true, ""];
else result = [false, colname + ": ya existe en el sistema"];
}
})
return result;
}
This works, but the problem is when I am editing the record. Of course e-mail exists in this case, so it is not allowing me to save the record.
The algorithm might be: it should validate only if id is > 0 and the entered e-mail is different from the existing value. In other words, validation must occur if the user is changing e-mail.
I spent a lot of time trying to figure out how to know if the editform is for adding or for editing, and even more, I was trying to find the value of the primary key of the record being edited, without any success.
Any help will be appreciated,
EDIT:
This is the code of the grid:
$("#personal").jqGrid({
url: "#Url.Action("List")",
datatype: "json",
mtype: "GET",
colNames: ["Departamento",
"Nombres",
"Apellido Paterno",
"Apellido Materno",
"RUT",
"Contraseña",
"Fecha Nacimiento",
"Fotografía",
"Estado Civil",
"Género",
"Dirección",
"Cargo",
"E-mail",
"Fecha Ingreso",
"Creación",
"Modificación"],
colModel: [
{ name: "dep_id", index: "dep_nombre", editable: true, edittype: "select", formatter: 'select', editoptions: { width: 100, value: "#ViewData["Departamentos"]" }, width: 250, editrules: { required: true }, formoptions: { elmsuffix: '<span class="required">*</span>' }, stype: 'select', searchoptions: { sopt: ['eq'], value: "#ViewData["Departamentos"]" } },
{ name: "per_nombres", index: "per_nombres", editable: true, width: 250, editoptions: { maxlength: 80, size: 32 }, editrules: { required: true }, formoptions: { elmsuffix: '<span class="required">*</span>' } },
{ name: "per_apellido_paterno", index: "per_apellido_paterno", editable: true, width: 250, editoptions: { maxlength: 80, size: 32 }, editrules: { required: true }, formoptions: { elmsuffix: '<span class="required">*</span>' } },
{ name: "per_apellido_materno", index: "per_apellido_materno", editable: true, width: 250, editoptions: { maxlength: 80, size: 32 } },
{ name: "per_dni", index: "per_dni", editable: true, width: 100, editoptions: { maxlength: 20, size: 17, dataInit: function (el) { $.mask.definitions['~'] = '[0-9kK]'; $(el).mask("?99.999.999-~"); } }, editrules: { required: true, custom: true, custom_func: is_rut }, formoptions: { elmsuffix: '<span class="required">*</span>' }, searchoptions: { dataInit: function (el) { $.mask.definitions['~'] = '[0-9kK]'; $(el).mask("?99.999.999-~"); } } },
{ name: "per_contrasena", editable: true, edittype: "password", hidden: true, width: 100, editoptions: { maxlength: 50, size: 17 }, editrules: { required: false, edithidden: true } },
{ name: "per_fecha_nacimiento", index: "per_fecha_nacimiento", editable: true, width: 100, editrules: { date: true, required: false }, formatter: 'date', formatoptions: { srcformat: 'SortableDateTime', newformat: 'd-m-Y' }, editoptions: { size: 17, dataInit: function (el) { $(el).datepicker({ dateFormat: 'dd-mm-yy' }); $(el).mask("?99-99-9999"); } }, searchoptions: { dataInit: function (el) { $(el).datepicker({ dateFormat: 'dd-mm-yy' }); $(el).mask("?99-99-9999"); } } },
{ name: "per_fotografia", index: "per_fotografia", editable: true, width: 250, edittype: "file", editoptions: { maxlength: 255, size: 32 } },
{ name: "per_estado_civil", index: "per_estado_civil", editable: true, edittype: "select", editoptions: { value: ":;S:Soltero;C:Casado;V:Viudo;D:Divorciado" }, width: 100, stype: 'select', searchoptions: { sopt: ['eq'], value: ":;S:Soltero;C:Casado;V:Viudo;D:Divorciado" } },
{ name: "per_sexo", index: "per_sexo", editable: true, edittype: "select", editoptions: { value: ":;M:Masculino;F:Femenino" }, width: 100, stype: 'select', searchoptions: { sopt: ['eq'], value: ":;M:Masculino;F:Femenino" } },
{ name: "per_direccion", index: "per_direccion", editable: true, width: 250, editoptions: { maxlength: 512, size: 32 } },
{ name: "per_cargo", index: "per_cargo", editable: true, width: 100, editoptions: { maxlength: 50, size: 32 } },
{ name: "per_email", index: "per_email", editable: true, width: 100, editoptions: { maxlength: 80, size: 32 }, editrules: { email: true, required: false, custom: true, custom_func: check_email } },
{ name: "per_fecha_ingreso", index: "per_fecha_ingreso", editable: true, width: 100, editrules: { date: true, required: false }, formatter: 'date', formatoptions: { srcformat: 'SortableDateTime', newformat: 'd-m-Y' }, editoptions: { size: 17, dataInit: function (el) { $(el).datepicker({ dateFormat: 'dd-mm-yy' }); $(el).mask("?99-99-9999"); } }, searchoptions: { dataInit: function (el) { $(el).datepicker({ dateFormat: 'dd-mm-yy' }); $(el).mask("?99-99-9999"); } } },
{ name: "per_creado_el", index: "per_creado_el", editable:false, search:false, width: 100, align: "center", formatter: "date" },
{ name: "per_modificado_el", index: "per_modificado_el", editable:false, search:false, width: 100, align: "center", formatter: "date" },
],
jsonReader: {
repeatitems: false,
id: "per_id"
},
pager: "#pager",
rowNum: 10,
rowList: [10, 20, 30],
sortname: "per_apellido_paterno",
sortorder: "asc",
viewrecords: true,
gridview: true,
autoencode: true,
multiselect: true,
shrinkToFit: false,
caption: "Funcionarios",
editurl: "#Url.Action("AjaxEdit")",
height: '100%',
width: 935,
rownumbers: true,
rownumWidth: 40
});
$("#personal").jqGrid('hideCol', ["per_fotografia", "per_direccion"]);
$("#personal").jqGrid('navGrid', '#pager', { edit: true, add: true, del: true, search: false }, { width: 500 }, { width: 500 }, {}, { multipleSearch: false, multipleGroup: false });
$("#personal").jqGrid('filterToolbar', { searchOperators: false });
$.jgrid.edit.addCaption = "Agregar Funcionario";
$.jgrid.edit.editCaption = "Modificar Funcionario";
$.jgrid.edit.saveData = "¡El funcionario fue modificado! ¿Almacena los cambios?";
$.jgrid.formatter.date.newformat = 'd-m-Y H:i';
Thanks
Jaime

Answer 1

I think you should send the record ID for verification.
function check_email(value, colname) {
var rowid = jQuery('#personal').jqGrid('getGridParam', 'selrow');
$.ajax({
url: '#Url.Action("CheckEmail")',
data: { email: value, rowid: rowid },
type: 'POST',
async: false,
datatype: 'text',
success: function (data) {
if (!data) result = [true, ""];
else result = [false, colname + ": ya existe en el sistema"];
}
})
return result;
}
and so the server has any record can be checked with the ID does not match with the rowid.