diff --git a/js/bootstrap/form.js b/js/bootstrap/form.js
index 7a2f981..00cc896 100644
--- a/js/bootstrap/form.js
+++ b/js/bootstrap/form.js
@@ -12,8 +12,7 @@ const Form = class {
   getTemplate() {
     let capitalizedName = capitalize(this.modelName);
 
-    let template =
-    `<template>
+    let template = `<template>
       <div id="${this.modelName}Form" class="form">
        <form @submit.prevent="handleSubmit">
         templateStructString
@@ -27,10 +26,9 @@ const Form = class {
     let countFiles = 0;
     //Template Struct
     for (let property in this.model) {
-      if (property.includes("hidden_fields")) continue; //if property includes 'hide'in your text  this loop skip once
+      if (property.includes("hidden_fields")) continue;
 
       if (this.model.hasOwnProperty(property)) {
-        // types: number, text, select, currency, radio, checkbox, oneToOne, object, html
         templateStruct += `\t<div class="form-group">\n\t\t<label for="${property}">${property}</label>\n`;
 
         if (this.model[property].type == "select") {
@@ -46,7 +44,7 @@ const Form = class {
         } else if (this.model[property].type == "textarea") {
           templateStruct += `\t<textarea id="${property}" style="width: 100%" v-model="${this.modelName}.${property}" rows="10">You text here...</textarea>\n\n`;
         } else if (this.model[property].type == "radio") {
-            templateStruct += "<br />";
+          templateStruct += "<br />";
           for (let option of this.model[property].options) {
             templateStruct += `\t<input type="radio" id="${option.id}" value="${option.value}" v-model="${this.modelName}.${property}">\n`;
             templateStruct += `\t<label for="${option.id}">${option.value}</label><br>\n\n`;
@@ -106,9 +104,6 @@ const Form = class {
                 class="form-control"
                 v-model.lazy="${this.modelName}.${property}"
               />\n`;
-        } else if (this.model[property].type == "object") {
-          templateStruct += `\t<input id="${property}" class="form-control" v-model="${this.modelName}.${property}.${this.model[property].attribute}">
-              \n`;
         } else {
           templateStruct += `\t<input id="${property}" class="form-control" `;
           for (let htmlProp in this.model[property]) {
@@ -266,8 +261,6 @@ const Form = class {
             this.model[property].options
           )},\n`;
           dataScript += `${property}: '',\n`;
-        } else if (this.model[property].type == "object") {
-          dataScript += `${property}: {},\n`;
         } else if (this.model[property].type == "checkbox") {
           dataScript += `${property}: [],\n`;
         } else if (this.model[property].type == "oneToOne") {
@@ -300,7 +293,9 @@ const Form = class {
           this.model[property].type == "oneToMany"
         ) {
           let capitalizedRelationName = capitalize(this.model[property].model);
-          let pluralizedAndCapitalizedRelationName = pluralize(capitalizedRelationName);
+          let pluralizedAndCapitalizedRelationName = pluralize(
+            capitalizedRelationName
+          );
           relationsImport += `
               import { getAll${pluralizedAndCapitalizedRelationName} } from "@/services/${this.model[property].model}";
             `;
diff --git a/js/types.js b/js/types.js
new file mode 100644
index 0000000..6c7cd91
--- /dev/null
+++ b/js/types.js
@@ -0,0 +1,147 @@
+const ONE_TO_ONE = "oneToOne";
+const ONE_TO_MANY = "oneToMany";
+const TEXT = "text";
+const SELECT = "select";
+const TEXTAREA = "textarea";
+const NUMBER = "number";
+const CURRENCY = "currency";
+const HTML = "html";
+const RADIO = "radio";
+const CHECKBOX = "checkbox";
+const FILE = "file";
+
+const HTML5_TYPES = [
+  "color",
+  "date",
+  "datetime-local",
+  "email",
+  "hidden",
+  "image",
+  "month",
+  "password",
+  "range",
+  "reset",
+  "search",
+  "submit",
+  "tel",
+  "time",
+  "url",
+  "week"
+];
+
+const Types = class {
+  constructor() {}
+
+  isValid() {}
+
+  static get ONE_TO_ONE() {
+    return ONE_TO_ONE;
+  }
+
+  static get ONE_TO_MANY() {
+    return ONE_TO_MANY;
+  }
+
+  static get TEXT() {
+    return TEXT;
+  }
+
+  static get SELECT() {
+    return SELECT;
+  }
+
+  static get TEXTAREA() {
+    return TEXTAREA;
+  }
+
+  static get NUMBER() {
+    return NUMBER;
+  }
+
+  static get CURRENCY() {
+    return CURRENCY;
+  }
+
+  static get HTML() {
+    return HTML;
+  }
+
+  static get RADIO() {
+    return RADIO;
+  }
+
+  static get CHECKBOX() {
+    return CHECKBOX;
+  }
+
+  static get FILE() {
+    return FILE;
+  }
+
+  static get validTypes() {
+    return HTML5_TYPES.concat([
+      ONE_TO_ONE,
+      ONE_TO_MANY,
+      TEXT,
+      SELECT,
+      TEXTAREA,
+      NUMBER,
+      CURRENCY,
+      HTML,
+      RADIO,
+      CHECKBOX,
+      FILE
+    ]);
+  }
+
+  static isValid(value) {
+    let types = this.validTypes;
+    return types.find(type => type == value);
+  }
+
+  static modelIsValid(model) {
+    let response = {
+      message: "",
+      success: true
+    };
+
+    for (let prop in model) {
+      if (!model.hasOwnProperty(prop)) continue;
+      let object = model[prop];
+      switch (model[prop].type) {
+        case Types.ONE_TO_ONE:
+        case Types.ONE_TO_MANY:
+          if (!object.attribute) {
+            response.message += `Model type: ${prop} needs attribute property.\n`;
+            response.success = false;
+          }
+          if (!object.model) {
+            response.message += `Model type: ${prop} needs model property.\n`;
+            response.success = false;
+          }
+          break;
+        case Types.RADIO:
+        case Types.CHECKBOX:
+        case Types.SELECT:
+          if (!object.options) {
+            response.message += `Model type: ${prop} needs options property.\n`;
+            response.success = false;
+          }
+          break;
+      }
+      if (!this.isValid(model[prop].type)) {
+        response.message += `Model type: ${prop} is invalid.\n`;
+        response.success = false;
+      }
+    }
+
+    if (!response.success) {
+      return response;
+    } else {
+      response.message = "Model is valid.";
+      return response;
+    }
+  }
+};
+
+module.exports = Types;
diff --git a/test/types.test.js b/test/types.test.js
new file mode 100644
index 0000000..c6248f2
--- /dev/null
+++ b/test/types.test.js
@@ -0,0 +1,222 @@
+const Types = require("../js/types");
+
+const model = {
+  title: {
+    type: Types.TEXT,
+    required: true
+  },
+  ISBN: {
+    type: Types.NUMBER,
+    required: true
+  },
+  authors: {
+    type: Types.ONE_TO_MANY,
+    attribute: "name",
+    model: "author"
+  },
+  publishing: {
+    type: Types.ONE_TO_ONE,
+    attribute: "name",
+    model: "publishing"
+  },
+  price: {
+    type: Types.CURRENCY
+  },
+  birth: {
+    type: "date",
+    required: true
+  },
+  active: {
+    type: Types.RADIO,
+    options: [
+      { id: "Active", value: true },
+      { id: "Inactive", value: false }
+    ]
+  },
+  sponsor: {
+    type: Types.SELECT,
+    options: ["Patron", "Vue-Crudgen"]
+  }
+};
+
+test("Check if types are valid", () => {
+  let count = 0;
+
+  for (let prop in model) {
+    if (model.hasOwnProperty(prop)) {
+      if (Types.isValid(model[prop].type)) {
+        count++;
+      }
+    }
+  }
+  expect(count).toBe(8);
+});
+
+test("Check if Types Models is invalid", () => {
+  let model = {
+    sponsor: {
+      type: "selects",
+      options: ["Patron", "Vue-Crudgen"]
+    }
+  };
+
+  let count;
+
+  for (let prop in model) {
+    if (model.hasOwnProperty(prop)) {
+      if (Types.isValid(model[prop].type)) {
+        count++;
+      }
+    }
+  }
+  expect(count).not.toBe(1);
+});
+
+test("Check if model is valid", () => {
+  let response = Types.modelIsValid(model);
+  expect(response).toEqual({
+    message: "Model is valid.",
+    success: true
+  });
+});
+
+test("Check if model is invalid (CURRENCY)", () => {
+  model.supply = {
+    type: Types.CURRENCY
+  };
+
+  let response = Types.modelIsValid(model);
+
+  expect(response.message).toMatch("Model is valid.");
+  expect(response.success).toBeTruthy();
+});
+
+test("Check if model is invalid (TEXTAREA)", () => {
+  model.supply = {
+    type: Types.TEXTAREA
+  };
+
+  let response = Types.modelIsValid(model);
+
+  expect(response.message).toMatch("Model is valid.");
+  expect(response.success).toBeTruthy();
+});
+
+test("Check if model is invalid (HTML)", () => {
+  model.supply = {
+    type: Types.HTML
+  };
+
+  let response = Types.modelIsValid(model);
+
+  expect(response.message).toMatch("Model is valid.");
+  expect(response.success).toBeTruthy();
+});
+
+test("Check if model is invalid (FILE)", () => {
+  model.supply = {
+    type: Types.FILE
+  };
+
+  let response = Types.modelIsValid(model);
+
+  expect(response.message).toMatch("Model is valid.");
+  expect(response.success).toBeTruthy();
+});
+
+test("Check if model is invalid ()", () => {
+  model.supply = {
+    type: Types.CURRENCY
+  };
+
+  let response = Types.modelIsValid(model);
+
+  expect(response.message).toMatch("Model is valid.");
+  expect(response.success).toBeTruthy();
+});
+
+test("Check if model is invalid (ONE_TO_ONE)", () => {
+  model.supply = {
+    type: Types.ONE_TO_ONE
+  };
+
+  let response = Types.modelIsValid(model);
+
+  expect(response.message).toMatch("Model type: supply needs model property.");
+
+  expect(response.message).toMatch(
+    "Model type: supply needs attribute property"
+  );
+
+  expect(response.success).toBeFalsy();
+});
+
+test("Check if model is invalid (ONE_TO_MANY)", () => {
+  model.supply = {
+    type: Types.ONE_TO_MANY
+  };
+
+  let response = Types.modelIsValid(model);
+
+  expect(response.message).toMatch("Model type: supply needs model property.");
+
+  expect(response.message).toMatch(
+    "Model type: supply needs attribute property"
+  );
+
+  expect(response.success).toBeFalsy();
+});
+
+test("Check if model is invalid (RADIO)", () => {
+  model.supply = {
+    type: Types.RADIO
+  };
+
+  let response = Types.modelIsValid(model);
+
+  expect(response.message).toMatch(
+    "Model type: supply needs options property."
+  );
+
+  expect(response.success).toBeFalsy();
+});
+
+test("Check if model is invalid (CHECKBOX)", () => {
+  model.supply = {
+    type: Types.CHECKBOX
+  };
+
+  let response = Types.modelIsValid(model);
+
+  expect(response.message).toMatch(
+    "Model type: supply needs options property."
+  );
+
+  expect(response.success).toBeFalsy();
+});
+
+test("Check if model is invalid (SELECT)", () => {
+  model.supply = {
+    type: Types.SELECT
+  };
+
+  let response = Types.modelIsValid(model);
+
+  expect(response.message).toMatch(
+    "Model type: supply needs options property."
+  );
+
+  expect(response.success).toBeFalsy();
+});
+
+test("Check if model is invalid (INVALID TYPE)", () => {
+  model.supply = {
+    type: "default"
+  };
+
+  let response = Types.modelIsValid(model);
+
+  expect(response.message).toMatch("Model type: supply is invalid.");
+
+  expect(response.success).toBeFalsy();
+});