jqGrid: Disable form fields when editing

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You can implement your requirements in different ways. For example, inside of beforeShowForm event you can hide or show the 

jQuery("#list").jqGrid({
    colModel: [
        { name: 'Name', width: 200, editable: true },
   //...

}).jqGrid('navGrid','#pager', { edit: true, add: true, del: false},
          { // edit option
              beforeShowForm: function(form) { $('#tr_Name', form).hide(); }
          },
          { // add option
              beforeShowForm: function(form) { $('#tr_Name', form).show(); }
          });

where the id “tr_Name” is constructed from “tr_” prefix and “Name” – the name property of the column from the colModel.

UPDATED: In the answer and in another one are shown one more way how the properties can be changed dynamically immediately before the editing will be initialized.

UPDATED 2: Free jqGrid allows to define editable as callback function or as "disabled", "hidden" or "readonly". See the wiki article. It allows to implement the same requirements more easy.

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