devrelcollective/xela

package actions

import (
    "github.com/devrelcollective/xela/models"
    "github.com/gobuffalo/buffalo"
    "github.com/gobuffalo/pop"
    "github.com/pkg/errors"
)

// 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 (Link)
// DB Table: Plural (links)
// Resource: Plural (Links)
// Path: Plural (/links)
// View Template Folder: Plural (/templates/links/)

// LinksResource is the resource for the Link model
type LinksResource struct {
    buffalo.Resource
}

// List gets all Links. This function is mapped to the path
// GET /links
func (v LinksResource) List(c buffalo.Context) error {
    // Get the DB connection from the context
    tx, ok := c.Value("tx").(*pop.Connection)
    if !ok {
        return errors.WithStack(errors.New("no transaction found"))
    }

    links := &models.Links{}

    // 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 Links from the DB
    if err := q.All(links); err != nil {
        return errors.WithStack(err)
    }

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

    return c.Render(200, r.Auto(c, links))
}

// Show gets the data for one Link. This function is mapped to
// the path GET /links/{link_id}
func (v LinksResource) Show(c buffalo.Context) error {
    // Get the DB connection from the context
    tx, ok := c.Value("tx").(*pop.Connection)
    if !ok {
        return errors.WithStack(errors.New("no transaction found"))
    }

    // Allocate an empty Link
    link := &models.Link{}

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

    return c.Render(200, r.Auto(c, link))
}

// New renders the form for creating a new Link.
// This function is mapped to the path GET /links/new
func (v LinksResource) New(c buffalo.Context) error {
    return c.Render(200, r.Auto(c, &models.Link{}))
}

// Create adds a Link to the DB. This function is mapped to the
// path POST /links
func (v LinksResource) Create(c buffalo.Context) error {
    // Get the DB connection from the context
    tx, ok := c.Value("tx").(*pop.Connection)
    if !ok {
        return errors.WithStack(errors.New("no transaction found"))
    }

    user := c.Value("current_user").(*models.User)

    // Allocate an empty Link
    link := &models.Link{
        UserID:    user.ID,
        UpdatedBy: user.ID,
    }

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

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

    if verrs.HasAny() {
        // 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.Auto(c, link))
    }

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

    // and redirect to the links index page
    return c.Render(201, r.Auto(c, link))
}

// Edit renders a edit form for a Link. This function is
// mapped to the path GET /links/{link_id}/edit
func (v LinksResource) Edit(c buffalo.Context) error {
    // Get the DB connection from the context
    tx, ok := c.Value("tx").(*pop.Connection)
    if !ok {
        return errors.WithStack(errors.New("no transaction found"))
    }

    // Allocate an empty Link
    link := &models.Link{}

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

    return c.Render(200, r.Auto(c, link))
}

// Update changes a Link in the DB. This function is mapped to
// the path PUT /links/{link_id}
func (v LinksResource) Update(c buffalo.Context) error {
    // Get the DB connection from the context
    tx, ok := c.Value("tx").(*pop.Connection)
    if !ok {
        return errors.WithStack(errors.New("no transaction found"))
    }

    user := c.Value("current_user").(*models.User)

    // Allocate an empty Link
    link := &models.Link{
        UpdatedBy: user.ID,
    }

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

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

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

    if verrs.HasAny() {
        // 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.Auto(c, link))
    }

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

    // and redirect to the links index page
    return c.Render(200, r.Auto(c, link))
}

// Destroy deletes a Link from the DB. This function is mapped
// to the path DELETE /links/{link_id}
func (v LinksResource) Destroy(c buffalo.Context) error {
    // Get the DB connection from the context
    tx, ok := c.Value("tx").(*pop.Connection)
    if !ok {
        return errors.WithStack(errors.New("no transaction found"))
    }

    // Allocate an empty Link
    link := &models.Link{}

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

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

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

    // Redirect to the links index page
    return c.Render(200, r.Auto(c, link))
}