diff --git a/addons/web/static/src/js/views/basic/basic_controller.js b/addons/web/static/src/js/views/basic/basic_controller.js
index 16a066db495..af4ca7d7a08 100644
--- a/addons/web/static/src/js/views/basic/basic_controller.js
+++ b/addons/web/static/src/js/views/basic/basic_controller.js
@@ -419,6 +419,7 @@ var BasicController = AbstractController.extend(FieldManagerMixin, {
             var saveDef = this.model.save(recordID, { // Save then leave edit mode
                 reload: options.reload,
                 savePoint: options.savePoint,
+                viewType: options.viewType,
             });
             if (!options.stayInEdit) {
                 saveDef = saveDef.then(function (fieldNames) {
diff --git a/addons/web/static/src/js/views/basic/basic_model.js b/addons/web/static/src/js/views/basic/basic_model.js
index 61c285d6581..20066b858f1 100644
--- a/addons/web/static/src/js/views/basic/basic_model.js
+++ b/addons/web/static/src/js/views/basic/basic_model.js
@@ -704,6 +704,8 @@ var BasicModel = AbstractModel.extend({
      * @param {boolean} [options.savePoint=false] if true, the record will only
      *   be 'locally' saved: its changes written in a _savePoint key that can
      *   be restored later by call discardChanges with option rollback to true
+     * @param {string} [options.viewType] current viewType. If not set, we will
+     *   assume main viewType from the record
      * @returns {Deferred}
      *   Resolved with the list of field names (whose value has been modified)
      */
@@ -718,6 +720,11 @@ var BasicModel = AbstractModel.extend({
                     if (newValue instanceof Array) {
                         rec._savePoint = newValue.slice(0);
                     } else {
+                        // save the viewType of edition, so that the correct readonly modifiers
+                        // can be evaluated when the record will be saved
+                        for (var fieldName in (rec._changes || {})) {
+                            rec._editionViewType[fieldName] = options.viewType;
+                        }
                         rec._savePoint = _.extend({}, newValue);
                     }
                 });
@@ -728,7 +735,7 @@ var BasicModel = AbstractModel.extend({
                 // id never changes, and should not be written
                 delete record._changes.id;
             }
-            var changes = self._generateChanges(record);
+            var changes = self._generateChanges(record, options.viewType);
 
             if (method === 'create') {
                 var fieldNames = record.getFieldNames();
@@ -1869,12 +1876,26 @@ var BasicModel = AbstractModel.extend({
      *
      * @private
      * @param {Object} record
+     * @param {string} [viewType] current viewType. If not set, we will assume
+     *   main viewType from the record. Note that if an editionViewType is
+     *   specified for a field, it will take the priority over the viewType arg.
      * @returns {Object} a map from changed fields to their new value
      */
-    _generateChanges: function (record) {
+    _generateChanges: function (record, viewType) {
+        viewType = viewType || record.viewType;
         var changes = _.extend({}, record._changes);
         var commands = this._generateX2ManyCommands(record, true);
         for (var fieldName in record.fields) {
+            // remove readonly fields from the list of changes
+            if (fieldName in changes || fieldName in commands) {
+                var editionViewType = record._editionViewType[fieldName] || viewType;
+                if (this._isFieldReadonly(record, fieldName, editionViewType)) {
+                    delete changes[fieldName];
+                    continue;
+                }
+            }
+
+            // process relational fields and handle the null case
             var type = record.fields[fieldName].type;
             if (type === 'one2many' || type === 'many2many') {
                 if (commands[fieldName].length) { // replace localId by commands
@@ -2199,6 +2220,31 @@ var BasicModel = AbstractModel.extend({
         }
         return context;
     },
+    /**
+     * Returns true if the field is readonly (checking first in the modifiers,
+     * and if there is no readonly modifier, checking the readonly attribute of
+     * the field).
+     *
+     * @private
+     * @param {Object} record an element from the localData
+     * @param {string} fieldName
+     * @param {string} [viewType] current viewType. If not set, we will assume
+     *   main viewType from the record
+     * @returns {boolean}
+     */
+    _isFieldReadonly: function (record, fieldName, viewType) {
+        var fieldInfo = record.fieldsInfo[viewType || record.viewType][fieldName];
+        var modifiers;
+        if (fieldInfo) {
+            var rawModifiers = JSON.parse(fieldInfo.modifiers || "{}");
+            modifiers = this._evalModifiers(record, rawModifiers);
+        }
+        if (modifiers && 'readonly' in modifiers) {
+            return modifiers.readonly;
+        } else {
+            return record.fields[fieldName].readonly;
+        }
+    },
     /**
      * Returns true iff value is considered to be set for the given field's type.
      *
@@ -2330,6 +2376,12 @@ var BasicModel = AbstractModel.extend({
             viewType: params.viewType,
         };
 
+        // _editionViewType is a dict whose keys are field names and which is populated when a field
+        // is edited with the viewType as value. This is useful for one2manys to determine whether
+        // or not a field is readonly (using the readonly modifiers of the view in which the field
+        // has been edited)
+        dataPoint._editionViewType = {};
+
         dataPoint.evalModifiers = this._evalModifiers.bind(this, dataPoint);
         dataPoint.getContext = this._getContext.bind(this, dataPoint);
         dataPoint.getDomain = this._getDomain.bind(this, dataPoint);
@@ -2507,7 +2559,7 @@ var BasicModel = AbstractModel.extend({
                     .then(function () {
                         // save initial changes, so they can be restored later,
                         // if we need to discard.
-                        self.save(record.id, {savePoint: true})
+                        self.save(record.id, {savePoint: true});
 
                         return record.id;
                     });
@@ -2582,8 +2634,7 @@ var BasicModel = AbstractModel.extend({
      * @param {string[]} fields changed fields
      * @param {string} [viewType] current viewType. If not set, we will assume
      *   main viewType from the record
-     * @returns {Deferred} The returned deferred can fail, in which case the
-     *   fail value will be the warning message received from the server
+     * @returns {Deferred}
      */
     _performOnChange: function (record, fields, viewType) {
         var self = this;
diff --git a/addons/web/static/src/js/views/view_dialogs.js b/addons/web/static/src/js/views/view_dialogs.js
index a19e440913e..4035ea6e63e 100644
--- a/addons/web/static/src/js/views/view_dialogs.js
+++ b/addons/web/static/src/js/views/view_dialogs.js
@@ -222,6 +222,7 @@ var FormViewDialog = ViewDialog.extend({
                 stayInEdit: true,
                 reload: false,
                 savePoint: this.shouldSaveLocally,
+                viewType: 'form',
             });
         }
         return $.when(def).then(function () {
diff --git a/addons/web/static/tests/views/basic_model_tests.js b/addons/web/static/tests/views/basic_model_tests.js
index fefc7231e5b..ca2f6f37f3e 100644
--- a/addons/web/static/tests/views/basic_model_tests.js
+++ b/addons/web/static/tests/views/basic_model_tests.js
@@ -572,6 +572,20 @@ QUnit.module('Views', {
         this.params.fieldNames = ['product_id', 'category', 'product_ids'];
         this.params.res_id = undefined;
         this.params.type = 'record';
+        this.params.fieldsInfo = {
+            form: {
+                category: {},
+                product_id: {},
+                product_ids: {
+                    fieldsInfo: {
+                        default: { name: {} },
+                    },
+                    relatedFields: this.data.product.fields,
+                    viewType: 'default',
+                },
+            },
+        };
+        this.params.viewType = 'form';
 
         var model = createModel({
             Model: BasicModel,
@@ -1015,6 +1029,19 @@ QUnit.module('Views', {
         this.params.fieldNames = ['total', 'product_ids'];
         this.params.res_id = undefined;
         this.params.type = 'record';
+        this.params.fieldsInfo = {
+            form: {
+                product_ids: {
+                    fieldsInfo: {
+                        default: { name: {} },
+                    },
+                    relatedFields: this.data.product.fields,
+                    viewType: 'default',
+                },
+                total: {},
+            },
+        };
+        this.params.viewType = 'form';
 
         var o2mRecordParams = {
             fields: this.data.product.fields,
@@ -1277,6 +1304,63 @@ QUnit.module('Views', {
         model.destroy();
     });
 
+    QUnit.test('dont write on readonly fields (write and create)', function (assert) {
+        assert.expect(6);
+
+        this.params.fieldNames = ['foo', 'bar'];
+        this.data.partner.onchanges.foo = function (obj) {
+            obj.bar = obj.foo.length;
+        };
+        this.data.partner.fields.bar.readonly = true;
+
+        var model = createModel({
+            Model: BasicModel,
+            data: this.data,
+            mockRPC: function (route, args) {
+                if (args.method === 'write') {
+                    assert.deepEqual(args.args[1], {foo: "verylongstring"},
+                        "should only save foo field");
+                }
+                if (args.method === 'create') {
+                    assert.deepEqual(args.args[0], {foo: "anotherverylongstring"},
+                        "should only save foo field");
+                }
+                return this._super(route, args);
+            },
+        });
+
+        model.load(this.params).then(function (resultID) {
+            var record = model.get(resultID);
+            assert.strictEqual(record.data.bar, 2,
+                "should be initialized with correct value");
+
+            model.notifyChanges(resultID, {foo: "verylongstring"});
+
+            record = model.get(resultID);
+            assert.strictEqual(record.data.bar, 14,
+                "should be changed with correct value");
+
+            model.save(resultID);
+        });
+
+        // start again, but with a new record
+        delete this.params.res_id;
+        model.load(this.params).then(function (resultID) {
+            var record = model.get(resultID);
+            assert.strictEqual(record.data.bar, false,
+                "should be initialized with correct value");
+
+            model.notifyChanges(resultID, {foo: "anotherverylongstring"});
+
+            record = model.get(resultID);
+            assert.strictEqual(record.data.bar, 21,
+                "should be changed with correct value");
+
+            model.save(resultID);
+        });
+        model.destroy();
+    });
+
     QUnit.test('default_get with one2many values', function (assert) {
         assert.expect(1);
 
@@ -1297,6 +1381,18 @@ QUnit.module('Views', {
             fields: this.data.partner.fields,
             modelName: 'partner',
             type: 'record',
+            fieldsInfo: {
+                form: {
+                    product_ids: {
+                        fieldsInfo: {
+                            default: { name: {} },
+                        },
+                        relatedFields: this.data.product.fields,
+                        viewType: 'default',
+                    },
+                },
+            },
+            viewType: 'form',
         };
         model.load(params).then(function (resultID) {
             assert.strictEqual(typeof resultID, 'string', "result should be a valid id");
diff --git a/addons/web/static/tests/views/form_tests.js b/addons/web/static/tests/views/form_tests.js
index 23986635b88..d9fbfe2f3a4 100644
--- a/addons/web/static/tests/views/form_tests.js
+++ b/addons/web/static/tests/views/form_tests.js
@@ -4979,5 +4979,65 @@ QUnit.module('Views', {
 
         form.destroy();
     });
+
+    QUnit.test('readonly fields are not sent when saving', function (assert) {
+        assert.expect(5);
+
+        // define an onchange on display_name to check that the value of readonly
+        // fields is correctly sent for onchanges
+        this.data.partner.onchanges = {
+            display_name: function () {},
+        };
+        var checkOnchange = false;
+
+        var form = createView({
+            View: FormView,
+            model: 'partner',
+            data: this.data,
+            arch: '<form string="Partners">' +
+                    '<field name="p">' +
+                        '<tree>' +
+                            '<field name="display_name"/>' +
+                        '</tree>' +
+                        '<form string="Partners">' +
+                            '<field name="display_name"/>' +
+                            '<field name="foo" attrs="{\'readonly\': [[\'display_name\', \'=\', \'readonly\']]}"/>' +
+                        '</form>' +
+                    '</field>' +
+                '</form>',
+            mockRPC: function (route, args) {
+                if (checkOnchange && args.method === 'onchange') {
+                    assert.strictEqual(args.args[1].foo, 'foo value',
+                        "readonly fields value should be sent for onchanges");
+                }
+                if (args.method === 'create') {
+                    assert.deepEqual(args.args[0], {
+                        p: [[0, false, {display_name: 'readonly'}]]
+                    }, "should not have sent the value of the readonly field");
+                }
+                return this._super.apply(this, arguments);
+            },
+        });
+
+        form.$('.o_field_x2many_list_row_add a').click();
+        assert.strictEqual($('.modal input.o_field_widget[name=foo]').length, 1,
+            'foo should be editable');
+        checkOnchange = true;
+        $('.modal .o_field_widget[name=foo]').val('foo value').trigger('input');
+        $('.modal .o_field_widget[name=display_name]').val('readonly').trigger('input');
+        checkOnchange = false;
+        assert.strictEqual($('.modal span.o_field_widget[name=foo]').length, 1,
+            'foo should be readonly');
+        $('.modal .modal-footer .btn-primary').click(); // close the modal
+
+        form.$('.o_data_row').click(); // re-open previous record
+        assert.strictEqual($('.modal .o_field_widget[name=foo]').text(), 'foo value',
+            "the edited value should have been kept");
+        $('.modal .modal-footer .btn-primary').click(); // close the modal
+
+        form.$buttons.find('.o_form_button_save').click(); // save the record
+
+        form.destroy();
+    });
 });
 });