feat: codes支持dbname字段实现跨库JOIN

- construct_get_data_sql: 两个路径都支持c.dbname前缀
- get_code_desc: params中dbname优先用c.dbname
- models/*.json codes中添加dbname字段即可跨库引用

xls2ddl/xls2crud.py

@@ -163,8 +163,9 @@ def get_code_desc(field: dict, desc: dict) -> dict:
 			d.uitype = 'code'
 			d.valueField = d.name
 			d.textField = d.name + '_text'
+			dbname_val = "{{get_module_dbname('" + getattr(c, 'dbname', desc.modulename) + "')}}"
 			d.params = {
-				'dbname':"{{get_module_dbname('" + desc.modulename + "')}}",
+				'dbname':dbname_val,
 				'table':c.table,
 				'tblvalue':c.valuefield,
 				'tbltext':c.textfield,
@@ -223,11 +224,12 @@ def construct_get_data_sql(desc: dict) -> str:
 		param_field = "${" + desc.relation.param_field + "}$"
 		for code in desc.codes:
 			if code.field == desc.relation.outter_field:
+				code_tbl = f"{code.dbname}.{code.table}" if getattr(code, 'dbname', None) else code.table
 				return f"""select '$[{desc.relation.param_field}]$' as {desc.relation.param_field}, 
 case when b.{desc.relation.param_field} is NULL then 0 else 1 end has_{desc.relation.param_field},
 a.{code.valuefield} as {code.field}, 
 a.{code.textfield} as {code.field}_text
-from {code.table} a left join 
+from {code_tbl} a left join 
 (select * from {desc.tblsql or desc.tblname} where {desc.relation.param_field} ={param_field}) b 
 	on a.{code.valuefield} = b.{code.field}
 """
@@ -239,8 +241,9 @@ from {code.table} a left join
 		cond = '1 = 1'
 		if c.cond:
 			cond = c.cond
+		code_tbl = f"{c.dbname}.{c.table}" if getattr(c, 'dbname', None) else c.table
 		csql = f"""(select {c.valuefield} as {c.field}, 
-			{c.textfield} as {c.field}_text from {c.table} where {cond})"""
+			{c.textfield} as {c.field}_text from {code_tbl} where {cond})"""
 		infos.append([f'{shortname}.{c.field}_text', f"{csql} {shortname} on a.{c.field} = {shortname}.{c.field}"])
 	bt = f'(select * from {desc.summary[0].name} where 1=1' + " [[filterstr]]) a"
 	infos.insert(0, ['a.*', bt])