CrudOperators

I want to extend CrudOperators ,need to add more operators , how to achieve that. operators is inside refine core,

5 Replies

Hi @Anoosh-dns. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- To extend CrudOperators in Refine and add more operators, you can follow these steps: 1. Understand the Existing CrudOperators Type: The CrudOperators type in Refine includes a variety of operators for filtering data. Here is the current list of operators as defined in the documentation:

   type CrudOperators =  
     | "eq" // Equal  
     | "ne" // Not equal  
     | "lt" // Less than  
     | "gt" // Greater than  
     | "lte" // Less than or equal to  
     | "gte" // Greater than or equal to  
     | "in" // Included in an array  
     | "nin" // Not included in an array  
     | "ina" // Column contains every element in an array  
     | "nina" // Column doesn't contain every element in an array  
     | "contains" // Contains  
     | "ncontains" // Doesn't contain  
     | "containss" // Contains, case sensitive  
     | "ncontainss" // Doesn't contain, case sensitive  
     | "between" // Between  
     | "nbetween" // Not between  
     | "null" // Is null  
     | "nnull" // Is not null  
     | "startswith" // Starts with  
     | "nstartswith" // Doesn't start with  
     | "startswiths" // Starts with, case sensitive  
     | "nstartswiths" // Doesn't start with, case sensitive  
     | "endswith" // Ends with  
     | "nendswith" // Doesn't end with  
     | "endswiths" // Ends with, case sensitive  
     | "nendswiths" // Doesn't end with, case sensitive  
     | "or" // Logical OR  
     | "and"; // Logical AND

   type CrudOperators =  
     | "eq" // Equal  
     | "ne" // Not equal  
     | "lt" // Less than  
     | "gt" // Greater than  
     | "lte" // Less than or equal to  
     | "gte" // Greater than or equal to  
     | "in" // Included in an array  
     | "nin" // Not included in an array  
     | "ina" // Column contains every element in an array  
     | "nina" // Column doesn't contain every element in an array  
     | "contains" // Contains  
     | "ncontains" // Doesn't contain  
     | "containss" // Contains, case sensitive  
     | "ncontainss" // Doesn't contain, case sensitive  
     | "between" // Between  
     | "nbetween" // Not between  
     | "null" // Is null  
     | "nnull" // Is not null  
     | "startswith" // Starts with  
     | "nstartswith" // Doesn't start with  
     | "startswiths" // Starts with, case sensitive  
     | "nstartswiths" // Doesn't start with, case sensitive  
     | "endswith" // Ends with  
     | "nendswith" // Doesn't end with  
     | "endswiths" // Ends with, case sensitive  
     | "nendswiths" // Doesn't end with, case sensitive  
     | "or" // Logical OR  
     | "and"; // Logical AND

Source (https://refine.dev/docs/core/interface-references/#crudoperators) 2. Extend the CrudOperators Type: To add more operators, you can extend the CrudOperators type by creating a new type that includes the existing operators and your custom ones. Here is an example of how you can achieve this:

   import { CrudOperators as BaseCrudOperators } from "@refinedev/core";

   type ExtendedCrudOperators = BaseCrudOperators | "newOperator1" | "newOperator2";

   import { CrudOperators as BaseCrudOperators } from "@refinedev/core";

   type ExtendedCrudOperators = BaseCrudOperators | "newOperator1" | "newOperator2";

3. Update Your Data Provider: If you are using a custom data provider, you will need to update it to handle the new operators. This involves mapping the new operators to the format that your API accepts. Here is an example of how you can map operators in your data provider:

   const mapOperator = (operator: ExtendedCrudOperators): string => {
     switch (operator) {
       case "ne":
       case "gte":
       case "lte":
         return `_${operator}`;
       case "contains":
         return "_like";
       case "newOperator1":
         return "_newOp1"; // Example mapping for newOperator1
       case "newOperator2":
         return "_newOp2"; // Example mapping for newOperator2
       case "eq":
       default:
         return "";
     }
   };

   const mapOperator = (operator: ExtendedCrudOperators): string => {
     switch (operator) {
       case "ne":
       case "gte":
       case "lte":
         return `_${operator}`;
       case "contains":
         return "_like";
       case "newOperator1":
         return "_newOp1"; // Example mapping for newOperator1
       case "newOperator2":
         return "_newOp2"; // Example mapping for newOperator2
       case "eq":
       default:
         return "";
     }
   };

Source (https://refine.dev/docs/guides-concepts/data-fetching/#dataprovider-interface) By following these steps, you can extend the CrudOperators type in Refine to include additional operators that are specific to your application's needs. Make sure to update your data provider to handle these new operators appropriately. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•5mo ago

<@1208014992851341322> kapa.ai is still learning and improving, please let us know how it did by reacting below

sunny-greenOP•5mo ago

This is ok bu when i do like this

Type '"test"' is not assignable to type '"eq" | "ne" | "lt" | "gt" | "lte" | "gte" | "in" | "nin" | "contains" | "ncontains" | "containss" | "ncontainss" | "between" | "nbetween" | "null" | "nnull" | "startswith" | "nstartswith" | ... 7 more ... | "and"'.ts(2322)
IDataContext.d.ts(23, 5): The expected type comes from property 'operator' which is declared here on type 'CrudFilter'

@kapa.ai when i add like the above example getting this error

 Type '"test"' is not assignable to type '"eq" | "ne" | "lt" | "gt" | "lte" | "gte" | "in" | "nin" | "contains" | "ncontains" | "containss" | "ncontainss" | "between" | "nbetween" | "null" | "nnull" | "startswith" | "nstartswith" | ... 7 more ... | "and"'.ts(2322)
IDataContext.d.ts(23, 5): The expected type comes from property 'operator' which is declared here on type 'CrudFilter'

kapa.ai•5mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- To extend CrudOperators in Refine and add more operators, you need to ensure that the new operators are properly integrated into the type system and your data provider. Here’s a step-by-step guide to achieve this: 1. Extend the CrudOperators Type: First, you need to extend the existing CrudOperators type to include your new operators. Here’s how you can do it:

   import { CrudOperators as BaseCrudOperators } from "@refinedev/core";

   type ExtendedCrudOperators = BaseCrudOperators | "newOperator1" | "newOperator2";

   import { CrudOperators as BaseCrudOperators } from "@refinedev/core";

   type ExtendedCrudOperators = BaseCrudOperators | "newOperator1" | "newOperator2";

2. Update the Data Provider: Next, you need to update your data provider to handle the new operators. This involves mapping the new operators to the format that your API accepts. Here’s an example of how you can map operators in your data provider:

   const mapOperator = (operator: ExtendedCrudOperators): string => {
     switch (operator) {
       case "ne":
       case "gte":
       case "lte":
         return `_${operator}`;
       case "contains":
         return "_like";
       case "newOperator1":
         return "_newOp1"; // Example mapping for newOperator1
       case "newOperator2":
         return "_newOp2"; // Example mapping for newOperator2
       case "eq":
       default:
         return "";
     }
   };

   const mapOperator = (operator: ExtendedCrudOperators): string => {
     switch (operator) {
       case "ne":
       case "gte":
       case "lte":
         return `_${operator}`;
       case "contains":
         return "_like";
       case "newOperator1":
         return "_newOp1"; // Example mapping for newOperator1
       case "newOperator2":
         return "_newOp2"; // Example mapping for newOperator2
       case "eq":
       default:
         return "";
     }
   };

3. Integrate with useList or Other Hooks: When using hooks like useList, make sure to use the extended type for the operators. Here’s an example:

   import { useList } from "@refinedev/core";

   const { data, isLoading } = useList({
     resource: "products",
     filters: [
       {
         field: "title",
         operator: "newOperator1", // Use your new operator here
         value: "test",
       },
     ],
   });

   import { useList } from "@refinedev/core";

   const { data, isLoading } = useList({
     resource: "products",
     filters: [
       {
         field: "title",
         operator: "newOperator1", // Use your new operator here
         value: "test",
       },
     ],
   });

4. Ensure Type Compatibility: If you encounter type errors, make sure that the extended type is used consistently throughout your code. You might need to update type definitions in your data provider or other parts of your application to accept the extended operators. By following these steps, you can extend the CrudOperators type in Refine to include additional operators that are specific to your application's needs. Make sure to update your data provider to handle these new operators appropriately. For more detailed information, you can refer to the Refine documentation (https://refine.dev/docs/guides-concepts/data-fetching/#dataprovider-interface). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•5mo ago

<@1208014992851341322> kapa.ai is still learning and improving, please let us know how it did by reacting below