codesnips

validation

ruby 
class SignupsController < ApplicationController
  def new
    @user = User.new
  end

  def create

Inline form validation feedback via Turbo Streams

rails hotwire turbo
by codesnips 4 tabs
javascript 
const sharp = require('sharp');

const DEFAULTS = {
  maxWidth: 1600,
  maxHeight: 1600,
  format: 'webp',

Resize and Compress Uploaded Images with Sharp Before Saving to Disk

nodejs express sharp
by codesnips 3 tabs
java 
@RestController
@RequestMapping("/users")
public class UserPatchController {

    private final UserRepository users;
    private final JsonPatchService patchService;

Applying RFC 6902 JSON Patch with Optimistic Locking in Spring Boot

spring-boot rest-api json-patch
by codesnips 3 tabs
go 
package appconfig

import (
	"flag"
	"io"
	"os"

Parsing and Validating CLI Flags into a Typed Config Struct in Go

cli flags configuration
by codesnips 3 tabs
typescript 
import { Type } from 'class-transformer';
import { IsInt, IsOptional, IsString, Max, Min } from 'class-validator';

export class CursorPaginationQuery {
  @IsOptional()
  @IsString()

Cursor-Based Pagination for a TypeORM Repository in NestJS

nestjs typeorm pagination
by codesnips 4 tabs
python 
from typing import Optional
from pydantic import BaseModel, EmailStr, Field, field_validator, model_validator


class CreateUserRequest(BaseModel):
    model_config = {"extra": "forbid"}

Validating JSON Payloads with Pydantic v2 and Returning Field-Level Errors in FastAPI

fastapi pydantic validation
by codesnips 3 tabs
ruby 
class ParamSchema
  def initialize(fields)
    @fields = fields
  end

  def coerce(params)

Typed Query Param Coercion in a Sinatra before Filter with Schema Defaults

sinatra rack params
by codesnips 2 tabs
typescript 
import { AbstractControl, ValidationErrors, ValidatorFn } from '@angular/forms';

function hasActualValue(control: AbstractControl | null): boolean {
  return !!control && control.value !== null && control.value !== '';
}

Cross-Field Password-Confirmation Validator for Angular Reactive Forms

angular reactive-forms validators
by codesnips 3 tabs
rust 
use serde::{Deserialize, Serialize};

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AppConfig {
    #[serde(default)]
    pub server: ServerConfig,

Layered Config Loading From TOML File and Environment Variables in Rust

config serde toml
by codesnips 3 tabs
ruby 
allowed_types = ['image/png', 'image/jpeg', 'application/pdf']
uploaded = params.require(:document)

raise ActionController::BadRequest, 'file too large' if uploaded.size > 10.megabytes
raise ActionController::BadRequest, 'type not allowed' unless allowed_types.include?(uploaded.content_type)

Hardening file uploads with MIME checks and storage isolation

file-uploads validation malware
by Kai Nakamura 1 tab
java 
package com.example.auth.dto;

import jakarta.validation.constraints.Email;
import jakarta.validation.constraints.NotBlank;
import jakarta.validation.constraints.Pattern;
import jakarta.validation.constraints.Size;

Collect Bean Validation Field Errors in a Spring Boot Signup Endpoint

spring-boot bean-validation jakarta-validation
by codesnips 3 tabs
php 
<?php

use App\Http\Controllers\CommentController;
use Illuminate\Support\Facades\Route;

// The ->scoped() call forces {comment} to resolve through $post->comments,

Scoped Route-Model Binding for Nested Resources in Laravel

laravel routing route-model-binding
by codesnips 3 tabs