github.com/cheikhshift/buffalo@v0.9.5/generators/resource/templates/actions/resource-use_model.go.tmpl

package actions

import (

  "github.com/pkg/errors"
  "github.com/gobuffalo/buffalo"
  "github.com/markbates/pop"
  "{{.modelsPath}}"
)

// This file is generated by Buffalo. It offers a basic structure for
// adding, editing and deleting a page. If your model is more
// complex or you need more than the basic implementation you need to
// edit this file.

// Following naming logic is implemented in Buffalo:
// Model: Singular ({{.model}})
// DB Table: Plural ({{.modelTable}})
// Resource: Plural ({{.resourceName}})
// Path: Plural (/{{.resourceURL}})
// View Template Folder: Plural (/templates/{{.filesPath}}/)

// {{.resourceName}}Resource is the resource for the {{.singular}} model
type {{.resourceName}}Resource struct{
  buffalo.Resource
}

// List gets all {{.modelPlural}}. This function is mapped to the path
// GET /{{.under}}
func (v {{.resourceName}}Resource) List(c buffalo.Context) error {
  // Get the DB connection from the context
  tx := c.Value("tx").(*pop.Connection)

  {{.varPlural}} := &models.{{.modelPlural}}{}

  // Paginate results. Params "page" and "per_page" control pagination.
  // Default values are "page=1" and "per_page=20".
  q := tx.PaginateFromParams(c.Params())

  // Retrieve all {{.modelPlural}} from the DB
  if err := q.All({{.varPlural}}); err != nil {
    return errors.WithStack(err)
  }

  // Make {{.modelPlural}} available inside the html template
  c.Set("{{.varPlural}}", {{.varPlural}})

  // Add the paginator to the context so it can be used in the template.
  c.Set("pagination", q.Paginator)

  return c.Render(200, r.HTML("{{.filesPath}}/index.html"))
}

// Show gets the data for one {{.model}}. This function is mapped to
// the path GET /{{.resourceURL}}/{{"{"}}{{.modelSingularUnder}}_id}
func (v {{.resourceName}}Resource) Show(c buffalo.Context) error {
  // Get the DB connection from the context
  tx := c.Value("tx").(*pop.Connection)

  // Allocate an empty {{.model}}
  {{.varSingular}} := &models.{{.model}}{}

  // To find the {{.model}} the parameter {{.resourceSingularUnder}}_id is used.
  if err := tx.Find({{.varSingular}}, c.Param("{{.resourceSingularUnder}}_id")); err != nil {
    return c.Error(404, err)
  }

  // Make {{.varSingular}} available inside the html template
  c.Set("{{.varSingular}}", {{.varSingular}})

  return c.Render(200, r.HTML("{{.filesPath}}/show.html"))
}

// New renders the form for creating a new {{.model}}.
// This function is mapped to the path GET /{{.resourceURL}}/new
func (v {{.resourceName}}Resource) New(c buffalo.Context) error {
  // Make {{.varSingular}} available inside the html template
  c.Set("{{.varSingular}}", &models.{{.model}}{})

  return c.Render(200, r.HTML("{{.filesPath}}/new.html"))
}

// Create adds a {{.model}} to the DB. This function is mapped to the
// path POST /{{.resourceURL}}
func (v {{.resourceName}}Resource) Create(c buffalo.Context) error {
  // Allocate an empty {{.model}}
  {{.varSingular}} := &models.{{.model}}{}

  // Bind {{.varSingular}} to the html form elements
  if err := c.Bind({{.varSingular}}); err != nil {
    return errors.WithStack(err)
  }

  // Get the DB connection from the context
  tx := c.Value("tx").(*pop.Connection)

  // Validate the data from the html form
  verrs, err := tx.ValidateAndCreate({{.varSingular}})
  if err != nil {
    return errors.WithStack(err)
  }

  if verrs.HasAny() {
    // Make {{.varSingular}} available inside the html template
    c.Set("{{.varSingular}}", {{.varSingular}})

    // Make the errors available inside the html template
    c.Set("errors", verrs)

    // Render again the new.html template that the user can
    // correct the input.
    return c.Render(422, r.HTML("{{.filesPath}}/new.html"))
  }

  // If there are no errors set a success message
  c.Flash().Add("success", "{{.model}} was created successfully")

  // and redirect to the {{.under}} index page
  return c.Redirect(302, "/{{.resourceURL}}/%s",{{.varSingular}}.ID)
}

// Edit renders a edit form for a {{.singular}}. This function is
// mapped to the path GET /{{.resourceURL}}/{{"{"}}{{.modelSingularUnder}}_id}/edit
func (v {{.resourceName}}Resource) Edit(c buffalo.Context) error {
  // Get the DB connection from the context
  tx := c.Value("tx").(*pop.Connection)

  // Allocate an empty {{.model}}
  {{.varSingular}} := &models.{{.model}}{}

  if err := tx.Find({{.varSingular}}, c.Param("{{.resourceSingularUnder}}_id")); err != nil {
    return c.Error(404, err)
  }

  // Make {{.varSingular}} available inside the html template
  c.Set("{{.varSingular}}", {{.varSingular}})
  return c.Render(200, r.HTML("{{.filesPath}}/edit.html"))
}

// Update changes a {{.singular}} in the DB. This function is mapped to
// the path PUT /{{.under}}/{{"{"}}{{.modelSingularUnder}}_id}
func (v {{.resourceName}}Resource) Update(c buffalo.Context) error {
  // Get the DB connection from the context
  tx := c.Value("tx").(*pop.Connection)

  // Allocate an empty {{.model}}
  {{.varSingular}} := &models.{{.model}}{}

  if err := tx.Find({{.varSingular}}, c.Param("{{.resourceSingularUnder}}_id")); err != nil {
    return c.Error(404, err)
  }

  // Bind {{.model}} to the html form elements
  if err := c.Bind({{.varSingular}}); err != nil {
    return errors.WithStack(err)
  }

  verrs, err := tx.ValidateAndUpdate({{.varSingular}})
  if err != nil {
    return errors.WithStack(err)
  }

  if verrs.HasAny() {
    // Make {{.varSingular}} available inside the html template
    c.Set("{{.varSingular}}", {{.varSingular}})

    // Make the errors available inside the html template
    c.Set("errors", verrs)

    // Render again the edit.html template that the user can
    // correct the input.
    return c.Render(422, r.HTML("{{.filesPath}}/edit.html"))
  }

  // If there are no errors set a success message
  c.Flash().Add("success", "{{.model}} was updated successfully")

  // and redirect to the {{.under}} index page
  return c.Redirect(302, "/{{.resourceURL}}/%s",{{.varSingular}}.ID)
}

// Destroy deletes a {{.singular}} from the DB. This function is mapped
// to the path DELETE /{{.resourceURL}}/{{"{"}}{{.modelSingularUnder}}_id}
func (v {{.resourceName}}Resource) Destroy(c buffalo.Context) error {
  // Get the DB connection from the context
  tx := c.Value("tx").(*pop.Connection)

  // Allocate an empty {{.model}}
  {{.varSingular}} := &models.{{.model}}{}

  // To find the {{.model}} the parameter {{.modelSingularUnder}}_id is used.
  if err := tx.Find({{.varSingular}}, c.Param("{{.resourceSingularUnder}}_id")); err != nil {
    return c.Error(404, err)
  }

  if err := tx.Destroy({{.varSingular}}); err != nil {
    return errors.WithStack(err)
  }

  // If there are no errors set a flash message
  c.Flash().Add("success", "{{.model}} was destroyed successfully")

  // Redirect to the {{.under}} index page
  return c.Redirect(302, "/{{.resourceURL}}")
}