/how-to-build-lovable

How to build CRM system with Lovable?

Learn to build a robust CRM system with Lovable. Our guide offers step-by-step instructions and best practices to streamline your customer management processes.

Matt Graham, CEO of Rapid Developers

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How to build CRM system with Lovable?

 
Project Overview and Setup
 

  • Create a new project in Lovable and name it "CRM System".
  • Lovable projects are file-based so all your code and configuration files will reside in the project workspace.
  • This guide will help you build a basic CRM system consisting of data models, API endpoints, and a user interface.

 
Configuring Dependencies
 

  • In your project workspace, create a new file named lovable.config.json. This file is used to define and load dependencies for the project.
  • Insert the following code snippet into lovable.config.json to include modules that support database operations and CRM functionalities:
  • 
    {
      "dependencies": {
        "lovable-crm-module": "latest",
        "lovable-database": ">=1.0.0"
      }
    }
      
  • Lovable will automatically load these dependencies based on the configuration file content.

 
Creating CRM Data Models
 

  • Create a new file named crm\_models.lov in your project directory. This file will define the data entities for your CRM system.
  • Copy and paste the following code snippet to define two primary entities: Contact and Lead.
  • 
    module CRMModels {
      // Define a Contact entity
      entity Contact {
        id: ID,
        firstName: String,
        lastName: String,
        email: String,
        phone: String
      }
    
    

    // Define a Lead entity
    entity Lead {
    id: ID,
    name: String,
    email: String,
    status: String
    }
    }


  • This setup helps Lovable recognize the CRM data structure for operations such as insertions, queries, and updates.

 
Creating API Endpoints
 

  • Create a new file named crm\_api.lov in your project workspace. This file will contain functions to interact with your data models.
  • Paste the following code snippet into crm\_api.lov to implement basic API endpoints for retrieving and creating contacts:
  • 
    module CRMApi using CRMModels {
      // Endpoint to retrieve all contacts from the database
      function getContacts() {
        return Database.findAll(CRMModels.Contact);
      }
    
    

    // Endpoint to create a new contact in the database
    function createContact(data) {
    return Database.insert(CRMModels.Contact, data);
    }
    }


  • This file bridges your data models to the backend operations provided by Lovable's database module.

 
Building the User Interface
 

  • Create a new file named crm\_ui.lov in your project folder. This file will manage the front-end interface of your CRM.
  • Insert the following code snippet into crm\_ui.lov to build a simple UI that displays contacts and allows adding a new contact:
  • 
    module CRMUI {
      import CRMApi;
    
    

    // Function to render the contacts page
    function renderContactsPage() {
    let contacts = CRMApi.getContacts();
    // Render the contacts in a table using Lovable's UI module
    UI.renderTable(contacts);
    }

    // Function to render a form to add a new contact
    function addContactForm() {
    let form = UI.createForm({
    fields: ["firstName", "lastName", "email", "phone"]
    });
    form.onSubmit = (data) => {
    CRMApi.createContact(data);
    UI.refreshPage();
    };
    UI.renderForm(form);
    }
    }


  • This UI module uses Lovable’s built-in UI functions to create and manage forms and tables without requiring a terminal.

 
Linking Components and Application Bootstrapping
 

  • Create a new file named main.lov in your workspace. This file serves as the entry point of your CRM system.
  • Add the following code snippet in main.lov to connect your UI component and start your application:
  • 
    import CRMUI from "crm\_ui.lov";
    
    

    function main() {
    // Render the contacts page when the application starts
    CRMUI.renderContactsPage();
    }

    main();


  • This ensures that when Lovable loads your project, the main function gets executed and the user interface is displayed.

 
Testing and Running Your CRM System
 

  • After saving all the changes, use Lovable’s built-in preview or run feature to test your CRM system.
  • The system will load main.lov which in turn calls the UI functions, displaying contacts and the add contact form.
  • Interact with the UI to add new contacts and verify that they are correctly stored using Lovable’s database functions.

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How to Create Customer Endpoints with Engagement Scoring for Your Lovable CRM


const express = require('express');
const bodyParser = require('body-parser');
const app = express();
app.use(bodyParser.json());

let customers = [];

// POST endpoint: Add a new customer with Lovable interaction data
app.post('/api/customers', (req, res) => {
  const { name, email, interactions } = req.body;
  if (!name || !email) {
    return res.status(400).json({ error: 'Name and email are required.' });
  }
  
  const newCustomer = {
    id: customers.length + 1,
    name,
    email,
    createdAt: new Date(),
    // Store interactions as a structured array of events
    interactions: Array.isArray(interactions)
      ? interactions.map((interaction) => {
          const { type, date, details } = interaction;
          return {
            type,
            date: date ? new Date(date) : new Date(),
            details: details || {}
          };
        })
      : []
  };

  customers.push(newCustomer);
  res.status(201).json(newCustomer);
});

// GET endpoint: Retrieve a customer, including calculated Lovable engagement score 
app.get('/api/customers/:id', (req, res) => {
  const customer = customers.find(c => c.id === parseInt(req.params.id, 10));
  if (!customer) {
    return res.status(404).json({ error: 'Customer not found.' });
  }

  // Compute an engagement score based on interaction types
  const engagementScore = customer.interactions.reduce((score, interaction) => {
    switch (interaction.type) {
      case 'email\_open': return score + 1;
      case 'click': return score + 2;
      case 'purchase': return score + 5;
      default: return score;
    }
  }, 0);

  res.json({ ...customer, engagementScore });
});

const PORT = process.env.PORT || 3000;
app.listen(PORT, () => console.log(`Server running on port ${PORT}`));

How to Sync Customer Data to Lovable Using Node.js and Express


const express = require('express');
const bodyParser = require('body-parser');
const axios = require('axios');
const app = express();
app.use(bodyParser.json());

app.post('/api/sync-customer', async (req, res) => {
  const { customerId, name, email, interaction } = req.body;
  if (!customerId || !name || !email) {
    return res.status(400).json({ error: 'customerId, name and email are required.' });
  }

  const lovablePayload = {
    customerId,
    profile: { name, email },
    recentInteraction: interaction || null,
    timestamp: new Date().toISOString()
  };

  try {
    const response = await axios.post('https://api.lovable.com/v1/sync', lovablePayload, {
      headers: { 'Authorization': `Bearer YOUR_LOVABLE_API_TOKEN` }
    });
    res.status(200).json({ message: 'Customer synced successfully.', data: response.data });
  } catch (error) {
    res.status(500).json({ error: 'Failed to sync customer.', details: error.message });
  }
});

const PORT = process.env.PORT || 3001;
app.listen(PORT, () => console.log(`Server running on port ${PORT}`));

How to Integrate and Secure Lovable Webhooks with Your CRM


const express = require('express');
const crypto = require('crypto');
const bodyParser = require('body-parser');
const app = express();
app.use(bodyParser.json());

const LOVABLE_WEBHOOK_SECRET = 'YOUR_WEBHOOK_SECRET';

function verifyLovableSignature(req, res, next) {
  const receivedSig = req.headers['x-lovable-signature'];
  if (!receivedSig) return res.status(401).send('Signature missing');
  const payload = JSON.stringify(req.body);
  const computedSig = crypto.createHmac('sha256', LOVABLE_WEBHOOK_SECRET)
                            .update(payload)
                            .digest('hex');
  if (receivedSig !== computedSig) {
    return res.status(401).send('Invalid signature');
  }
  next();
}

app.post('/api/lovable/webhook', verifyLovableSignature, async (req, res) => {
  const { eventType, customerId, details } = req.body;
  try {
    await processLovableEvent(eventType, customerId, details);
    res.status(200).send('Event processed');
  } catch (error) {
    res.status(500).send('Error processing event');
  }
});

function processLovableEvent(eventType, customerId, details) {
  return new Promise((resolve, reject) => {
    // Simulated backend logic for updating the CRM based on the event type received from Lovable
    setTimeout(() => {
      if (!customerId) {
        return reject(new Error('Missing customer ID'));
      }
      // Here you would integrate with your CRM's database update logic,
      // e.g., updating engagement levels, logging interaction details, etc.
      console.log(`Processed ${eventType} for customer ${customerId}`, details);
      resolve();
    }, 150);
  });
}

const PORT = process.env.PORT || 3002;
app.listen(PORT, () => console.log(`Webhook listener running on port ${PORT}`));

Want to explore opportunities to work with us?

Connect with our team to unlock the full potential of no-code solutions with a no-commitment consultation!

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Matt Graham, CEO of Rapid Developers

Book a call with an Expert

Starting a new venture? Need to upgrade your web app? RapidDev builds application with your growth in mind.

Book a free No-Code consultation

Best Practices for Building a CRM system with AI Code Generators

 
Understanding CRM and AI Code Generators
 

  • A Customer Relationship Management (CRM) system helps manage interactions, sales, and support tasks. It serves as a central hub for storing client information.
  • AI Code Generators are tools that use artificial intelligence to provide code snippets or even build portions of your application automatically, enhancing productivity and reducing repetitive work.
  • Building a CRM system with AI Code Generators involves integrating standard CRM features with AI-assistance during development, allowing for faster iterations and error reduction.

 
Gathering Prerequisites
 

  • A basic understanding of what a CRM system does and its core features, such as contact management, sales tracking, and reporting.
  • Access to AI Code Generators, which may include tools like GitHub Copilot, ChatGPT, or other AI-powered development assistants.
  • A working environment with a version control system (e.g., Git) and a preferred programming language or framework for web applications.
  • Basic knowledge of databases, whether using SQL or NoSQL, to store customer data.

 
Designing the System Architecture
 

  • Plan the main components of your CRM system such as the user interface, business logic, and the database.
  • Decide on the integration points with AI Code Generators, such as areas of the code where repetitive tasks can be automated or improved via AI suggestions.
  • Sketch out a flow diagram detailing how data moves from the user interface to the backend and then into storage, ensuring clear separation of concerns.

 
Setting Up Your Development Environment
 

  • Install the required programming language or framework (for example, Python with Django/Flask or JavaScript with Node.js/Express).
  • Set up a local development server for testing your CRM system.
  • Integrate your AI Code Generator within your code editor, ensuring it has access to your project files for smarter suggestions.
  • Create configuration files (such as settings.py for Python or config.js for JavaScript) to store application settings, API keys, and database connection details.

 
Integrating AI Code Generators in Your Workflow
 

  • Use your AI Code Generator to get suggestions for boilerplate code when building components like login systems, form validations, and RESTful endpoints.
  • Encourage the AI tool to generate code samples when you are stuck, then review and test the auto-generated code to ensure it meets your requirements.
  • Utilize version control commits to track AI-generated code separately, making it easier to review and revert if needed.

 
Implementing Core CRM Features
 

  • Develop the contact management module, including functionality to add, update, search, and delete customer details.
  • Implement sales tracking functionalities that allow for recording interactions, appointments, and follow-up actions.
  • Create reporting modules to generate insights on customer interactions and sales performance.
  • Below is a sample code snippet that demonstrates a simple function to add a customer record in Python:
    
    def add_customer(customer_data):
        """
        Inserts a new customer record into the database.
        customer\_data: dict containing name, email, and phone.
        """
        # Example pseudo-database operation
        database.insert(customer\_data)
        return "Customer added successfully"
    
    

    Sample usage:

    new_customer = {
    "name": "John Doe",
    "email": "john.doe@example.com",
    "phone": "123-456-7890"
    }
    result = add_customer(new_customer)
    print(result)


 
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