Adding new pages - let's add search page

Before we start adding anything to the frontend side of things we need to create a migration.

Adding and registering the new route

Let’s add search into a navbar and also register its route with our HTTP server.

In /web/handler/html/common/layout.go add the following link:

<a href="/search">search</a>

To register a new route, we need to edit /web/handler/handler.go, since we don’t have a template, let’s add placeholder for now:

// Search
publicSubRouter.HandleFunc("/search", nil).Methods(http.MethodGet)

Creating and displaying the template

Let’s create /web/handler/search.go and create a function that checks if we have a query (from search input form) and perform a request to our database with that query. Then we set context for our template with the query itself and the response from the database.

// /web/handler.search.go

package handler

import (
	"net/http"
)

func (h *Handler) searchShow(w http.ResponseWriter, r *http.Request) {
	query := r.URL.Query().Get("q")
	thing, _ := h.storage.Search(query)
	v := NewView(w, r, "search") // We don't have that yet!
	v.Set("sql", thing)
	v.Set("q", query)
	v.Render()
}

And let’s create a template for it - /web/handler/html/search.gohtml. We need to display the text input, submit button and some sort of a list of results.

We need to add 2 sections: title and content. In content we check if we have:

• .q - our query ("" means empty)
• .sql - response from the database

{{ define "title" }} Search {{ end }}

{{ define "content" }}
    <h2>Search</h2>

    {{ if .q }}
        <p>{{ len .sql }} results found.</p>
        {{ else }}
        <p>Enter your search query down below.</p>
    {{ end }}

    <form action="/search" method="get" class="search-form">
            <label for="q" style="display: none">Search</label>
            <input type="text" value="{{ .q }}" name="q" id="q" placeholder="...">
            <button type="submit">search</button>
    </form>

    {{ if .sql }}
        {{ range $index, $element := .sql }}
            <div class="search-result">
                <span>[{{ $element.OriginTable }}]</span>
                <a href="/{{ $element.OriginTable }}/{{ $element.ID }}">{{ $element.HighlightedTitle }}</a>
                {{ if ne $element.HighlightedContent "" }}
                    <div class="content">
                        {{ $element.HighlightedContent }}...
                    </div>
                {{ end }}
            </div>
        {{ end }}
    {{ end }}
{{ end }}

And done! Run go generate and run the vpub itself.