fix(models): preserve parameter deletions when switching models

backend/tests/test_model_parameter_cache.py

@@ -0,0 +1,104 @@
+"""Behavioral guard for model-parameter deletion; requires Node and frontend npm deps."""
+
+import shutil
+import subprocess
+import unittest
+from pathlib import Path
+
+PROJECT_ROOT = Path(__file__).resolve().parents[2]
+
+SCRIPT = r"""
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+const path = require('node:path');
+const frontend = path.join(process.cwd(), 'frontend');
+const ts = require(path.join(frontend, 'node_modules/typescript'));
+const { ref, reactive, computed } = require(path.join(frontend, 'node_modules/vue'));
+const component = fs.readFileSync(path.join(frontend, 'src/views/system/model/ModelForm.vue'), 'utf8');
+const script = component.match(/<script[^>]*>([\s\S]*?)<\/script>/)[1];
+const ast = ts.createSourceFile('ModelForm.ts', script, ts.ScriptTarget.Latest, true);
+const names = new Set([
+  'modelForm', 'modelRef', 'advancedSetting', 'tempConfigMap', 'curId',
+  'currentSupplier', 'modelList', 'initForm', 'handleParamsDel', 'supplierChang',
+  'formatAdvancedSetting', 'baseModelChange', 'getSupplierDomain', 'getModelDefaultArgs',
+  'submitModel',
+]);
+const selected = ast.statements.filter(statement => ts.isVariableStatement(statement) &&
+  statement.declarationList.declarations.some(declaration => names.has(declaration.name.getText(ast))));
+assert.equal(selected.length, names.size, 'all tested component declarations must be extracted');
+const js = ts.transpileModule(selected.map(statement => statement.getText(ast)).join('\n'), {
+  compilerOptions: { target: ts.ScriptTarget.ES2020 },
+}).outputText;
+const suppliers = [
+  {id: 15, type: 'openai', model_config: {0: {api_domain: 'http://example.test/v1',
+    common_args: [{key: 'temperature', val: 0.6}], model_options: []}}},
+  {id: 16, type: 'openai', model_config: {0: {api_domain: 'http://other.test/v1',
+    common_args: [{key: 'temperature', val: 0.3}], model_options: []}}},
+];
+let emitted;
+const getSupplier = id => suppliers.find(supplier => supplier.id === id);
+const api = new Function('ref', 'reactive', 'computed', 'get_supplier', 'base_model_options', 'emits',
+  js + '\nreturn {modelForm, modelRef, advancedSetting, initForm, handleParamsDel, supplierChang, baseModelChange, submitModel};'
+)(ref, reactive, computed, getSupplier, id => getSupplier(id).model_config[0].model_options,
+  (event, payload) => {assert.equal(event, 'submit'); emitted = payload;});
+api.modelRef.value = {clearValidate() {}, validate(callback) {callback(true);}};
+const original = {supplier: 15, base_model: 'gpt-4.1', model_type: 0, config_list: [
+  {id: 1, name: 'Temperature', key: 'temperature', val: 0.8},
+  {id: 2, name: 'Token limit', key: 'max_tokens', val: 4096},
+]};
+const untouched = JSON.stringify(original);
+const select = (supplierId, model) => {
+  if (supplierId !== api.modelForm.supplier) api.supplierChang(getSupplier(supplierId));
+  api.modelForm.base_model = model;
+  api.baseModelChange(model);
+};
+const submit = () => {api.submitModel(); return emitted.config_list;};
+api.initForm(original);
+select(15, 'gpt-4o-mini');
+select(16, 'gpt-4.1');
+select(15, 'gpt-4.1');
+assert.deepEqual(submit(), [
+  {key: 'temperature', name: 'Temperature', val: 0.8},
+  {key: 'max_tokens', name: 'Token limit', val: 4096},
+], 'switching without deleting preserves model configuration');
+const deleteAll = process.argv[1] === 'all';
+const deleted = deleteAll ? [...api.advancedSetting.value] : [api.advancedSetting.value[1]];
+for (const item of deleted) api.handleParamsDel(item);
+const expected = deleteAll ? [] : [{key: 'temperature', name: 'Temperature', val: 0.8}];
+assert.deepEqual(submit(), expected, 'deletion updates the emitted payload immediately');
+select(15, 'gpt-4o-mini');
+assert.deepEqual(submit(), [{key: 'temperature', name: 'temperature', val: 0.6}], 'other model unchanged');
+select(16, 'gpt-4.1');
+assert.deepEqual(submit(), [{key: 'temperature', name: 'temperature', val: 0.3}], 'other supplier unchanged');
+select(15, 'gpt-4.1');
+assert.deepEqual(submit(), expected, 'deleted parameters must stay deleted after switching back');
+assert.equal(JSON.stringify(original), untouched, 'deleting must not mutate loaded input configuration');
+"""
+
+
+class ModelParameterCacheTestCase(unittest.TestCase):
+    def check_deletion(self, mode: str) -> None:
+        if not shutil.which("node"):
+            self.skipTest("Node is required for the frontend behavior guard")
+        if not (
+            PROJECT_ROOT / "frontend/node_modules/typescript/package.json"
+        ).exists():
+            self.skipTest("Run npm install in frontend before this behavior guard")
+        result = subprocess.run(
+            ["node", "-e", SCRIPT, mode],
+            cwd=PROJECT_ROOT,
+            capture_output=True,
+            text=True,
+            timeout=30,
+        )
+        self.assertEqual(result.returncode, 0, result.stdout + result.stderr)
+
+    def test_deleted_parameter_stays_deleted_after_switching_models(self) -> None:
+        self.check_deletion("one")
+
+    def test_deleting_all_parameters_stays_empty_after_switching_models(self) -> None:
+        self.check_deletion("all")
+
+
+if __name__ == "__main__":
+    unittest.main()

frontend/src/views/system/model/ModelForm.vue

@@ -81,6 +81,7 @@ const handleParamsCreate = () => {
 
 const handleParamsDel = (item: any) => {
   advancedSetting.value = advancedSetting.value.filter((ele) => ele.id !== item.id)
+  tempConfigMap.set(`${modelForm.supplier}-${modelForm.base_model}`, [...advancedSetting.value])
 }
 const currentPage = ref(1)
 const advancedSettingPagination = computed(() => {