jolly-crimson•7mo ago

Refine - MUI CRUD REST API (Express) and MSSQL

Hi I m pretty noob with Refine and I m trying to adapt the example of the blog-posts and categories admin to my database to have an easy to use and deeply CRUD Admin. I think I have configured my Express API as requested in the Doc but when I connect to my database I get only the list of my first resource. The table is listed but then all the buttons (edit, delete etc.) do not work and somehow when I hover those buttons the address in the same as the list (I have tried a lot of things but could not figure out) in the pages: I have created a similar folder for the cities, replace all the blog-posts etc with cities my cities.js: const express = require('express'); const router = express.Router(); const { poolPromise, sql } = require('../db'); // POST - Create City (Protected Route) router.post('/', async (req, res) => { const { cityName } = req.body; try { const pool = await poolPromise; const result = await pool.request() .input('cityName', sql.NVarChar, cityName) .query('INSERT INTO app.Cities (CityName) OUTPUT Inserted.* VALUES (@cityName)'); res.status(201).json(result.recordset[0]); } catch (err) { res.status(500).json({ message: "Error adding city", error: err.message }); } }); etc....

17 Replies

kapa.ai•7mo ago

Hi @sarsar55.. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- I'm sorry, but the information provided in the extracts does not include specific details about configuring Express API with MSSQL for Refine. However, I can provide some general guidance based on the information available. In Refine, CRUD operations are handled through the data provider. The data provider is responsible for connecting your Refine application to your API. It translates the API's data into a format that Refine can understand and vice versa. To create CRUD pages in Refine, you need to add the resources to the resources property of the <Refine> component. Each resource object in the resources array should specify the route name and the basic operations the pages under that route name can perform. These operations include list, create, edit, and show. Here is an example of how to add resources to the <Refine> component:

<Refine  
 dataProvider={dataProvider}  
 resources={[  
 {  
 name: "posts",  
 list: "/posts",  
 create: "/posts/create",  
 },  
 {  
 name: "categories",  
 list: "/categories",  
 show: "/categories/show/:id",  
 },  
 ]}  
>

<Refine  
 dataProvider={dataProvider}  
 resources={[  
 {  
 name: "posts",  
 list: "/posts",  
 create: "/posts/create",  
 },  
 {  
 name: "categories",  
 list: "/categories",  
 show: "/categories/show/:id",  
 },  
 ]}  
>

In your case, you would replace "posts" and "categories" with "cities" and adjust the routes accordingly. If the buttons for edit, delete, etc., are not working, it could be due to several reasons. One possibility is that the routes for these operations are not correctly defined in your resources array. Another possibility is that there might be an issue with your data provider. It might not be correctly translating the requests from Refine into a format that your Express API can understand, or vice versa. For more detailed guidance, I recommend checking the Refine documentation (https://refine.dev/docs) and the Refine blog (https://refine.dev/blog) for more examples and tutorials. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•7mo ago

<@791625518440120320> kapa.ai is still learning and improving, please let us know how it did by reacting below

jolly-crimson•7mo ago

Could you provide example of a code of a compatible express api with one single table that is compatible with the dataprovider needs? @kapa.ai Could you provide example of a code of a compatible express api with one single table that is compatible with the dataprovider needs?

kapa.ai•7mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- I'm sorry, but the information provided in the extracts does not include a specific example of an Express API compatible with a single table for Refine's data provider. However, I can provide some general guidance on how you might structure such an API. Here's a basic example of how you might structure an Express API for a single resource:

const express = require('express');
const router = express.Router();

// Mock data
let data = [
    { id: 1, name: 'Item 1' },
    { id: 2, name: 'Item 2' },
    // ...
];

// GET - List all items
router.get('/', (req, res) => {
    res.json(data);
});

// GET - Get a single item
router.get('/:id', (req, res) => {
    const item = data.find(i => i.id === parseInt(req.params.id));
    res.json(item);
});

// POST - Create a new item
router.post('/', (req, res) => {
    const newItem = { id: Date.now(), ...req.body };
    data.push(newItem);
    res.json(newItem);
});

// PUT - Update an item
router.put('/:id', (req, res) => {
    let item = data.find(i => i.id === parseInt(req.params.id));
    Object.assign(item, req.body);
    res.json(item);
});

// DELETE - Delete an item
router.delete('/:id', (req, res) => {
    data = data.filter(i => i.id !== parseInt(req.params.id));
    res.json({ id: req.params.id });
});

module.exports = router;

const express = require('express');
const router = express.Router();

// Mock data
let data = [
    { id: 1, name: 'Item 1' },
    { id: 2, name: 'Item 2' },
    // ...
];

// GET - List all items
router.get('/', (req, res) => {
    res.json(data);
});

// GET - Get a single item
router.get('/:id', (req, res) => {
    const item = data.find(i => i.id === parseInt(req.params.id));
    res.json(item);
});

// POST - Create a new item
router.post('/', (req, res) => {
    const newItem = { id: Date.now(), ...req.body };
    data.push(newItem);
    res.json(newItem);
});

// PUT - Update an item
router.put('/:id', (req, res) => {
    let item = data.find(i => i.id === parseInt(req.params.id));
    Object.assign(item, req.body);
    res.json(item);
});

// DELETE - Delete an item
router.delete('/:id', (req, res) => {
    data = data.filter(i => i.id !== parseInt(req.params.id));
    res.json({ id: req.params.id });
});

module.exports = router;

This is a very basic example and does not include any error handling or validation. In a real-world application, you would also likely be interacting with a database rather than using mock data. Please note that the exact structure of your API will depend on the specific requirements of your application and the data provider you are using with Refine. For more detailed guidance, I recommend checking the Refine documentation (https://refine.dev/docs) and the Refine blog (https://refine.dev/blog) for more examples and tutorials. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•7mo ago

<@791625518440120320> kapa.ai is still learning and improving, please let us know how it did by reacting below

jolly-crimson•7mo ago

@kapa.ai Pls review the code and tell me what s going wrong, it still does not integrate with Refine: const express = require('express'); const router = express.Router(); const { poolPromise, sql } = require('../db'); // GET - List all cities router.get('/', async (req, res) => { try { const pool = await poolPromise; const result = await pool.request().query('SELECT * FROM app.Cities'); res.json(result.recordset); // Send array of cities } catch (err) { res.status(500).json({ message: "Error retrieving cities", error: err.message }); } }); // GET - Get a single city router.get('/:id', async (req, res) => { const { id } = req.params; try { const pool = await poolPromise; const result = await pool.request() .input('id', sql.Int, id) .query('SELECT * FROM app.Cities WHERE CityID = @id');
const city = result.recordset[0]; if (city) { res.json(city); // Send single city object } else { res.status(404).json({ message: "City not found" }); } } catch (err) { res.status(500).json({ message: "Error retrieving city", error: err.message }); } }); // POST - Create a new city router.post('/', async (req, res) => { const { cityName } = req.body; try { const pool = await poolPromise; const result = await pool.request() .input('cityName', sql.NVarChar, cityName) .query('INSERT INTO app.Cities (CityName) OUTPUT Inserted.* VALUES (@cityName)');
res.status(201).json(result.recordset[0]); // Send created city object } catch (err) { res.status(500).json({ message: "Error adding city", error: err.message }); } }); etc ... module.exports = router; please correct

kapa.ai•7mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- Based on the provided extracts, I don't have enough information to identify what might be going wrong with your Express API and its integration with Refine. The code you've shared seems to be correctly structured for a basic CRUD API in Express. However, here are a few general things you could check: 1. Database Connection: Ensure that your database is correctly connected and that the poolPromise and sql imported from ../db are working as expected. 2. API Endpoints: Test your API endpoints independently (for example, using a tool like Postman) to make sure they are working correctly. 3. Data Provider: Make sure you're using a correct data provider in your Refine app that matches the structure of your API. If you're using a REST API, you should be using a REST data provider. 4. Resource Configuration: In your Refine app, ensure that the resource configuration in the <Refine> component matches the routes and operations provided by your API. 5. Error Messages: Check the console in your Refine app for any error messages. These could provide clues about what's going wrong. If you're still having trouble, I recommend checking the Refine documentation (https://refine.dev/docs) and the Refine blog (https://refine.dev/blog) for more examples and tutorials. You might also consider asking for help in the Refine Discord community (https://discord.gg/refine). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•7mo ago

<@791625518440120320> kapa.ai is still learning and improving, please let us know how it did by reacting below

jolly-crimson•7mo ago

@kapa.ai ok please write the requests I need to enter in postman and the expected results for each request. This shall be all the requests that are generated by Refine to build the crud. Thanks

kapa.ai•7mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- Sure, here are the typical CRUD operations that Refine would perform and how you can test them using Postman: 1. GET - List all cities Request:

   GET <http://localhost:3000/cities>

   GET <http://localhost:3000/cities>

Expected Response: An array of city objects. Each object should include at least an id and cityName. 2. GET - Get a single city Request:

   GET <http://localhost:3000/cities/{id}>

   GET <http://localhost:3000/cities/{id}>

Replace {id} with the ID of a city. Expected Response: A single city object with the specified id. 3. POST - Create a new city Request:

   POST <http://localhost:3000/cities>

   POST <http://localhost:3000/cities>

In the request body, include a JSON object with the cityName. Expected Response: The created city object, including the id assigned by the server. 4. PUT - Update a city Request:

   PUT <http://localhost:3000/cities/{id}>

   PUT <http://localhost:3000/cities/{id}>

Replace {id} with the ID of the city you want to update. In the request body, include a JSON object with the updated cityName. Expected Response: The updated city object. 5. DELETE - Delete a city Request:

   DELETE <http://localhost:3000/cities/{id}>

   DELETE <http://localhost:3000/cities/{id}>

Replace {id} with the ID of the city you want to delete. Expected Response: Typically, a successful DELETE request will return a 204 No Content status code and no response body. However, your API may be set up to return the deleted object or a confirmation message. Please replace <http://localhost:3000> with the actual base URL of your API. Also, note that the exact structure of your requests and responses may vary depending on how your API and data provider are set up. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•7mo ago

<@791625518440120320> kapa.ai is still learning and improving, please let us know how it did by reacting below

jolly-crimson•7mo ago

@kapa.ai WHAT THE about the PATCH method, I see that refine is sending some shall i also include it in my express rest api?

kapa.ai•7mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- Yes, the PATCH method is often used in REST APIs for partial updates to a resource. If a PATCH request is being sent from Refine, it means that your data provider is set up to use PATCH for updates. Here's a basic example of how you might handle a PATCH request in your Express API:

// PATCH - Partially update a city
router.patch('/:id', async (req, res) => {
    const { id } = req.params;
    try {
        const pool = await poolPromise;
        const result = await pool.request()
            .input('id', sql.Int, id)
            .input('cityName', sql.NVarChar, req.body.cityName)
            .query('UPDATE app.Cities SET CityName = @cityName WHERE CityID = @id OUTPUT Inserted.*');
        
        const city = result.recordset[0];
        if (city) {
            res.json(city); // Send updated city object
        } else {
            res.status(404).json({ message: "City not found" });
        }
    } catch (err) {
        res.status(500).json({ message: "Error updating city", error: err.message });
    }
});

// PATCH - Partially update a city
router.patch('/:id', async (req, res) => {
    const { id } = req.params;
    try {
        const pool = await poolPromise;
        const result = await pool.request()
            .input('id', sql.Int, id)
            .input('cityName', sql.NVarChar, req.body.cityName)
            .query('UPDATE app.Cities SET CityName = @cityName WHERE CityID = @id OUTPUT Inserted.*');
        
        const city = result.recordset[0];
        if (city) {
            res.json(city); // Send updated city object
        } else {
            res.status(404).json({ message: "City not found" });
        }
    } catch (err) {
        res.status(500).json({ message: "Error updating city", error: err.message });
    }
});

In this example, the PATCH request only updates the cityName field of the city. If your city resource has more fields that can be updated, you would need to add them to the input and query methods. Please note that the exact structure of your PATCH request handler will depend on the specific requirements of your application and the data provider you are using with Refine. For more detailed guidance, I recommend checking the Refine documentation (https://refine.dev/docs) and the Refine blog (https://refine.dev/blog) for more examples and tutorials. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•7mo ago

<@791625518440120320> kapa.ai is still learning and improving, please let us know how it did by reacting below

plain-purple•7mo ago

Hey @sarsar55. I would suggest reading General Concepts and other guides, which will give you a great idea of what Refine is and what Refine isn't. https://refine.dev/docs/guides-concepts/general-concepts/ Your questions are not related to refine, but it's about express, so our bot has limited knowledge. Please ask questions directly relevant to Refine. Thanks

General Concepts | refine

Refine is an extensible framework designed for rapidly building web applications. It offers a modern, hook-based architecture, a pluggable system of providers, and a robust state management solution. This section provides an overview of the key concepts in Refine.

jolly-crimson•7mo ago

Ok the main issue I had and solved is that my database had some funky id... like CityId - Renaming to "id" all of the ids solved my issues- not sure it will help but just updating... @kapa.ai how can i customize the headers of the CRUD Tables?

kapa.ai•7mo ago

Let me check the knowledge base for you. One moment! :books: @sarsar55. That's a great question, but unfortunately I am only capable of responding to a maximum of five questions per thread. Don't hesitate to create a new thread for any further questions you have though. I'm here to help!