go-xlsx-templater

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go-xlsx-templater

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Simple xlsx template based document generator

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# go-xlsx-templater
Simple **.xlsx** (Excel XML document) template based document generator using handlebars.

Takes input **.xlsx** documents with mustache sippets in it and renders new document with snippets replaced by provided context.

Thanks to `github.com/tealeg/xlsx` and `github.com/aymerick/raymond` for useful libs.

[About package in russian](http://ivahaev.ru/go-xlsx-templater/)

[Godoc](https://godoc.org/github.com/ivahaev/go-xlsx-templater)

## Installation

```
    go get -u "github.com/ivahaev/go-xlsx-templater"
```

## Usage

### Import to your project

```go
    import "github.com/ivahaev/go-xlsx-templater"
```

### Prepare **template.xlsx** template.
Filename may be any of course. For slices use dot notation `{{items.name}}`. When parser meets dot notation it will repeats contains row. If you need repeat few rows, or have nested slices, you can use range start `{{range groups}}` and `{{end}}`.

![Sample document image](https://raw.githubusercontent.com/ivahaev/go-xlsx-templater/master/template.png)

### Prepare context data

```go
    ctx := map[string]interface{}{
        "name": "Github User",
        "groupHeader": "Group name",
        "nameHeader": "Item name",
        "quantityHeader": "Quantity",
        "groups": []map[string]interface{}{
            {
                "name":  "Work",
                "total": 3,
                "items": []map[string]interface{}{
                    {
                        "name":     "Pen",
                        "quantity": 2,
                    },
                    {
                        "name":     "Pencil",
                        "quantity": 1,
                    },
                },
            },
            {
                "name":  "Weekend",
                "total": 36,
                "items": []map[string]interface{}{
                    {
                        "name":     "Condom",
                        "quantity": 12,
                    },
                    {
                        "name":     "Beer",
                        "quantity": 24,
                    },
                },
            },
        },
    }
```

### Read template, render with context and save to disk.
Error processing omited in example.

```go
    doc := xlst.New()
	doc.ReadTemplate("./template.xlsx")
	doc.Render(ctx)
	doc.Save("./report.xlsx")
```

### Enjoy created report

![Report image](https://raw.githubusercontent.com/ivahaev/go-xlsx-templater/master/report.png)

## Documentation

#### type Xlst

```go
type Xlst struct {
    // contains filtered or unexported fields
}
```

Xlst Represents template struct

#### func  New

```go
func New() *Xlst
```
New() creates new Xlst struct and returns pointer to it

#### func (*Xlst) ReadTemplate

```go
func (m *Xlst) ReadTemplate(path string) error
```
ReadTemplate() reads template from disk and stores it in a struct

#### func (*Xlst) Render

```go
func (m *Xlst) Render(ctx map[string]interface{}) error
```
Render() renders report and stores it in a struct

#### func (*Xlst) Save

```go
func (m *Xlst) Save(path string) error
```
Save() saves generated report to disk

#### func (*Xlst) Write

```go
func (m *Xlst) Write(writer io.Writer) error
```
Write() writes generated report to provided writer

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