refactor: Image generate model disable history mode

Author: liuruibin

apps/application/flow/step_node/image_generate_step_node/i_image_generate_node.py

@@ -13,11 +13,11 @@ class ImageGenerateNodeSerializer(serializers.Serializer):
 
     prompt = serializers.CharField(required=True, error_messages=ErrMessage.char("提示词(正向)"))
 
-    negative_prompt = serializers.CharField(required=False, default='', error_messages=ErrMessage.char("提示词(负向)"))
+    negative_prompt = serializers.CharField(required=False, error_messages=ErrMessage.char("提示词(负向)"), allow_null=True, allow_blank=True,)
     # 多轮对话数量
-    dialogue_number = serializers.IntegerField(required=True, error_messages=ErrMessage.integer("多轮对话数量"))
+    dialogue_number = serializers.IntegerField(required=False, default=0, error_messages=ErrMessage.integer("多轮对话数量"))
 
-    dialogue_type = serializers.CharField(required=True, error_messages=ErrMessage.char("对话存储类型"))
+    dialogue_type = serializers.CharField(required=False, default='NODE', error_messages=ErrMessage.char("对话存储类型"))
 
     is_result = serializers.BooleanField(required=False, error_messages=ErrMessage.boolean('是否返回内容'))
 

ui/src/workflow/nodes/image-generate/index.vue

@@ -154,10 +154,12 @@
             @wheel="wheel"
             title="提示词(负向)"
             v-model="form_data.negative_prompt"
+            placeholder="请描述不想生成的图片内容，比如：颜色、血腥内容"
             style="height: 150px"
             @submitDialog="submitDialog"
           />
         </el-form-item>
+        <!--
         <el-form-item>
           <template #label>
             <div class="flex-between">
@@ -178,6 +180,7 @@
             :step-strictly="true"
           />
         </el-form-item>
+        -->
         <el-form-item label="返回内容" @click.prevent>
           <template #label>
             <div class="flex align-center">